Detailed Description
It should be noted that, in the case of no conflict, the embodiments of the present application and the technical features of the embodiments may be combined with each other, and the detailed description in the specific embodiments should be interpreted as an explanation of the gist of the present application and should not be construed as unduly limiting the present application.
In the present application, the temperature unit "°c" is degrees celsius. The pressure unit "bar" is bar. The unit "μm" is micrometers.
The aerosol-generating substrate is used for heating to generate an aerosol. For example, the aerosol-generating substrate may be adapted to produce an aerosol in a manner that does not burn upon heating. That is, the aerosol-generating substrate is heated to below the ignition point to produce an aerosol. The aerosol-generating substrate does not burn during the aerosol-generating process. In some application scenarios, the aerosol-generating substrate may be adapted to produce an aerosol in a lit manner. The aerosol-generating substrate of the present application is more applicable to the generation of aerosols by means of a heated non-combustible.
The aerosol-generating substrate provided by the embodiment of the application is used for aerosol-generating articles. An aerosol-generating article comprises an aerosol-generating substrate and a functional segment. The functional section is arranged at one end of the aerosol-generating substrate in the longitudinal direction, and the functional section comprises a filter section for filtering the aerosol. The filter section is used for filtering aerosol generated by the aerosol-generating substrate.
The aerosol-generating article is for use with aerosols generated by a user inhaling an aerosol-generating substrate. For example, the user may draw the filtered aerosol through the buccal filter segment. The aerosol generated by the aerosol-generating substrate is delivered to the filter stage under suction negative pressure.
The aerosol-generating article is for use with an aerosol-generating device having a heating assembly. In particular, the heating assembly heats and atomizes the aerosol-generating substrate to produce an aerosol.
There are various heating modes of the heating assembly, and exemplary heating modes include center heating, circle heating and/or bottom heating. By central heating is meant that the heating element is inserted into the interior of the aerosol-generating article to bake the aerosol-generating article from inside to outside, and by way of example, the heating element may be inserted into the interior of the aerosol-generating substrate to heat it. By circumferential heating means, it is meant that a heating element is arranged at the periphery of the aerosol-generating article for external to internal bake heating of the aerosol-generating article, and by way of example, the heating element may be arranged at the periphery of the aerosol-generating substrate for heating. By bottom heating means is meant that the heating element is located at the bottom of the aerosol-generating article, for example in one embodiment the heating element (resistive or electromagnetic) is used to heat the air first, and then the hot air is used to bake the aerosol-generating article from bottom to top (i.e. to transfer heat in the form of thermal convection). Bottom heating may also be by heat transfer to the article by a resistive or electromagnetic heating element or the like.
It is noted that the bottom of the aerosol-generating article is its end longitudinally remote from the functional section.
The heating means of the heating component includes, but is not limited to, resistance heating, electromagnetic heating, infrared heating, microwave heating, laser heating, etc. Wherein the electric resistance and electromagnetic heating mainly transfer heat to the substrate in a heat conduction mode. Infrared heating, microwave heating or laser heating primarily transfers heat to the substrate in the form of thermal radiation. I.e. the heating element may heat the substrate by one or more of conduction, convection and radiation.
In some embodiments, the functional segments may be provided with only the filter segments.
In other embodiments, the functional segment further comprises a cooling segment positioned between the filtering segment and the aerosol-generating substrate, the cooling segment being configured to cool the aerosol prior to filtering the aerosol by the filtering segment. The cooling section can improve the phenomenon of mouth scalding when a user sucks aerosol.
The cooling material used in the cooling section includes, but is not limited to, one or more of PE (polyethylene), PLA (Polylactic Acid ), PBAT (Polybutylene ADIPATE TEREPHTHALATE, polybutylene adipate terephthalate), PP (Polypropylene), acetate fiber, and propylene fiber.
The filtering material used in the filtering section includes, but is not limited to, one or more of PE (polyethylene), PLA (Polylactic Acid ), PBAT (Polybutylene ADIPATE TEREPHTHALATE, polybutylene adipate terephthalate), PP (Polypropylene), acetate fiber, and propylene fiber.
The materials of the cooling section and the filtering section can be the same or different.
Referring to fig. 1, an embodiment of the present application provides a method for manufacturing an aerosol-generating substrate, the method comprising:
s100, extruding a mixed material at normal temperature to form an extrusion matrix, wherein the mixed material is a component of the aerosol generating matrix;
Referring to fig. 7, the extruded substrate 100 has the same cross-sectional shape as the aerosol-generating substrate. That is, the cross-sectional shape of the extruded substrate 100 is the same as the cross-sectional shape of the aerosol-generating substrate. The extrusion process is used to shape the mix without changing the chemical nature of the mix.
The longitudinal direction refers to the extending direction of the aerosol-generating substrate. For example, the aerosol-generating substrate is extrusion molded, with the longitudinal direction being the direction of extension of the extruded substrate 100. The cross-sectional shape refers to a shape that the matrix 100 is extruded in a cross-section taken in a plane perpendicular to the longitudinal direction.
Referring to fig. 2 and 3, the mixture is extruded to form an extruded matrix 100 by extrusion at normal temperature using an extrusion apparatus 1. Extrusion molding refers to a processing method of extruding a matrix 100 with a preset cross-sectional shape and corresponding air passage holes by a mixed material through the interaction between the barrel of the extruding device 1 and the extruding screw 13, wherein the mixed material is heated and plasticized and pushed to the discharge port 12b by the extruding screw 13, and the extrusion matrix is manufactured into a preset cross-sectional shape through a die 14 (shown in fig. 6).
Since the temperature during extrusion molding affects the flowability of the mixture and the smoothness of the outer surface of the extruded matrix 100. The extrusion at room temperature can compromise the flowability of the mixed material during extrusion and the smoothness of the outer surface of the extruded matrix 100.
Exemplary extrusion temperatures for ambient extrusion are between 10 ℃ and 90 ℃. For example, the extrusion temperature of the normal temperature extrusion is 10 ℃,12 ℃, 15 ℃, 16 ℃, 18 ℃, 20 ℃, 25 ℃,30 ℃, 40 ℃, 45 ℃, 50 ℃, 70 ℃, 75 ℃, 80 ℃,85 ℃, 90 ℃, or the like. If the temperature in the extrusion process is lower than 10 ℃, the flowability of the mixed materials is poor, the production speed is low, and the efficiency is low. If the temperature in the extrusion process is higher than 90 ℃, the mixed material flows too fast, and the pressure of the mixed material at the discharge hole 12b is too small, which is unfavorable for extrusion molding and leads to the reduction of yield. Thus, the temperature of the ambient extrusion is between 10 ℃ and 90 ℃, and both the flowability of the mixture during extrusion and the smoothness of the outer surface of the extruded matrix 100 are compatible.
In the extrusion field, the extrusion temperature is a high temperature extrusion at 90 ℃. Extrusion temperature below 10 ℃ is low temperature extrusion. The extrusion temperature is the temperature within the extrusion chamber of the extrusion device.
And S200, carrying out hot air drying on the extruded substrate.
The extruded matrix 100 is hot air dried to reduce the liquid content. If the aerosol-generating substrate contains an excess of liquid, the aerosol-generating substrate is not easy to store and transport, is subject to deformation by force, is because moisture is a component with a relatively high heat capacity, and is subject to "hot-mouth" conditions during the heating of the aerosol-generating substrate. Thus, the solvent, such as moisture and/or other volatile lubricants, in the extruded substrate 100 is relatively high and requires removal of the solvent and/or lubricant to obtain a dry aerosol-generating substrate for use or storage.
Hot air drying refers to drying the extruded substrate 100 using a hot air stream. The hot gas stream may be contacted with the extrusion matrix 100 to transfer heat to the extrusion matrix 100 such that the solvent and/or lubricant within the extrusion matrix 100 heats up to a gaseous state, thereby reducing the solvent content and/or lubricant content of the extrusion matrix 100 for the purpose of drying the extrusion matrix 100.
According to the manufacturing method provided by the embodiment of the application, the mixed material is extruded at normal temperature, the mixed material has good fluidity, the surface smoothness of the extruded matrix 100 is good, the extrusion molding effect is good, and therefore, good extrusion efficiency and high production speed are ensured, and the yield is improved. The hot air drying enables batch drying of the extruded substrate 100 with a fast drying rate, and the moisture content of the extruded substrate 100 is reduced by hot air drying to facilitate preservation and use of the aerosol-generating substrate. The aerosol-generating substrate obtained by normal temperature extrusion and hot air drying is an integrated structure. Thus, the aerosol generating substrate is an integral medium in the use process of the aerosol generating substrate, such as after being heated and sucked or stopped being heated, and the problem of disintegration and dropping is not easy to occur.
Illustratively, in one embodiment, referring to fig. 7, the aerosol-generating substrate is formed with an airway 100a, the airway 100a extending longitudinally through opposite ends of the aerosol-generating substrate. The airflow may flow longitudinally from one end of the aerosol-generating substrate to the other end of the aerosol-generating substrate. Therefore, the air flow formed by carrying the aerosol with the air can flow more smoothly, the flowing resistance of the air flow is smaller, the suction resistance in the suction process can be remarkably reduced, and the suction experience is improved.
In an embodiment, the airway 100a may be formed inside the aerosol-generating substrate or on the outer circumferential surface of the aerosol-generating substrate.
In one embodiment, the air passage 100a is a straight air passage 100a extending along a straight line. The linear airway 100a is easy to form, and can reduce manufacturing difficulty. The flow resistance of the air flow in the linear air passage 100a is relatively small.
In one embodiment, the airway 100a is a curved airway 100a, and at least a portion of the orifice section of the curved airway 100a is curved with a non-zero curvature. The curved airway 100a can greatly increase the flow path of the airflow without significantly increasing the length of the aerosol-generating substrate, and can prolong the contact time of the airflow and the wall surface of the curved airway 100a, thereby improving the extraction rate of the aerosol.
In one embodiment, the curved airway 100a is spiral. That is, the three-dimensional shape of the curved airway 100a is a spatial spiral. For example, a spiral curvilinear airway may be formed by rotating die 14 during extrusion. Any point of the spiral-shaped curved airway 100a is at an oblique angle relative to its axis to the line of origin. The spiral curve-shaped air passage 100a can greatly prolong the flow path of air flow, separate out aerosol from the aerosol generating substrate into the curve-shaped air passage 100a, and improve the flow speed of the aerosol in the aerosol generating substrate, so that the impact force of the air flow is improved, the aerosol can be uniformly mixed, the uniformity of the aerosol is improved, and the suction feeling of a user is improved.
It is to be understood that the extruded substrate 100 has the same cross-sectional shape as the aerosol-generating substrate, the extruded substrate 100 being a semi-finished product of the aerosol-generating substrate, in the case of an aerosol-generating substrate having an air channel 100a, the extruded substrate 100 also having the same air channel 100a.
The cross-sectional shape of the airway 100a within the aerosol-generating substrate is not limited, and for example, the cross-sectional shape may be circular, polygonal (including but not limited to triangular, square, prismatic, etc.), elliptical, racetrack, or contoured, etc., wherein contoured refers to other symmetrical or asymmetrical shapes in addition to those listed above.
The cross-sectional shape of the air channel 100a on the outer circumferential surface of the aerosol-generating substrate may be semi-circular, semi-elliptical, polygonal, or profiled, etc., wherein profiled refers to other symmetrical or asymmetrical shapes than those listed above.
The number of airways 100a is not limited, and airways 100a are one or more. The plural numbers include two or more.
It should be noted that, micropores exist in the aerosol-generating substrate, for example, for the aerosol-generating substrate of the particle combination, gaps between particles form micropores, but the air passage 100a in the present application is different from micropores, the air passage 100a in the present application is a macroscopic hole, the micropores are microscopic holes, and the cross-sectional area, length, and the like of the air passage 100a are larger than those of the micropores. The air passage 100a is mainly formed by processing a designed mold, such as a die, so that the cross-sectional area, the length and other dimensions of the air passage 100a can be changed according to the design requirement, the size of the micro-holes is determined by gaps among particles, for example, the mixed material is a granular material, an extrusion matrix formed by extrusion molding of the mixed material is provided with micro-holes, the cross-sectional area, the length and other dimensions of the micro-holes are naturally formed by an extrusion process and raw material components, and the mixed material can be expanded to form the micro-holes after being added into an extrusion bin to flow out of the die.
In one embodiment, the extrusion device is used to extrude the mixture material at room temperature to form an extruded matrix, comprising:
s110, firstly, mixing a plurality of raw materials into a mixed material;
And S120, adding the mixed material into the extrusion device.
In this embodiment, a plurality of raw materials such as plant raw materials, auxiliary agent raw materials, smoke agent raw materials and the like are mixed in advance to form slurry, and then the slurry is added into the extrusion device 1 for extrusion molding, namely, a slurry feeding mode is adopted, and the slurry feeding mode has the advantages that the mixed materials have better consistency, and the uniformity and stability of the product can be ensured.
In one embodiment, the extrusion device 1 is used to form an extruded matrix 100 by extrusion at ambient temperature, comprising:
and S130, adding various raw materials into a plurality of material openings of the extrusion device respectively, and forming the mixed material in the extrusion device.
In this example, a plurality of raw materials such as a plant raw material, an auxiliary raw material, and a smoke agent raw material are added to the extrusion apparatus 1 in separate modules, and the raw materials are mixed in the extrusion apparatus 1. Namely, a split-module feeding mode is adopted.
Illustratively, one of the plurality of ports 12c is a solids feed port 12c 'for adding solids and one of the plurality of ports 12c is a liquid feed port 12c "for adding liquid, the liquid feed port 12c" being located downstream of the solids feed port 12c' in the direction of flow of the feedstock. During charging, solid materials are added through the solid material charging opening 12c ', and when the solid materials reach the liquid material charging opening 12c', liquid materials are started to be added. In addition, the feeding amount and the feeding speed can be determined according to the production speed of the equipment and the proportion of the raw material formula. The split-module feeding mode has the advantages of reducing raw material pretreatment cost, ensuring continuity of the production process and improving production efficiency of products.
In some embodiments, the extrusion device 1 comprises a feed screw 11 rotatably disposed in the throat. The feed screw 11 can further homogenize the raw material and can better ensure continuous stable feeding of the raw material.
In one embodiment, the blend stock comprises, by weight, 30 to 90 parts of a plant material, 1 to 15 parts of an auxiliary material, 5 to 30 parts of a smoke agent material, 1 to 10 parts of an adhesive material, and 1 to 15 parts of a flavor material. Specifically, the total weight parts of the plant raw material, the auxiliary raw material, the smoke agent raw material, the adhesive raw material and the spice raw material are 100 parts.
Plant material is used to produce aerosols when heated. The auxiliary raw material is used for providing skeleton support for plant raw materials. The smoke agent feedstock is used to produce a substantial amount of smoke when heated. The binder material is used to bond the component materials. Perfume raw materials are used to provide a characteristic fragrance. Thus, the plant raw material and the fumigant raw material can ensure the aerosol generation amount, and the spice raw material can promote the release of the aroma in the sucking process, so that the user experience is improved. The auxiliary raw material not only can improve the fluidity of the mixed material, but also enables the aerosol generating substrate to be in a porous structure so as to facilitate the extraction and flow of the aerosol. The adhesive raw material ensures that plant raw material powder, auxiliary agent and the like form a stable mixture, and the loosening of the structure is avoided.
In one embodiment, the plant material is one or more of tobacco leaf material, tobacco leaf fragments, tobacco stems, tobacco powder, fragrant plant, etc. after crushing. The plant raw material is a core source of the fragrance, and endogenous substances in the plant raw material can generate physiological satisfaction for a user, and the endogenous substances such as alkaloids enter human blood to promote the pituitary to generate dopamine, so that the physiological satisfaction is obtained.
In one embodiment, the auxiliary raw material can be one or a combination of more of inorganic filler, lubricant and emulsifier. Wherein the inorganic filler comprises one or more of heavy calcium carbonate, light calcium carbonate, zeolite, attapulgite, talcum powder and diatomite. The inorganic filler can provide skeleton supporting function for plant raw materials, and meanwhile, the inorganic filler also has micropores, so that the porosity of the aerosol generating matrix can be improved, and the release rate of the aerosol is improved.
The lubricant comprises one or more of candelilla wax, carnauba wax, shellac, sunflower wax, rice bran, beeswax, stearic acid, and palmitic acid. The lubricant can increase fluidity of the plant material powder, reduce friction force between the plant material powder, make the overall density of the plant material powder distribution more uniform, and reduce pressure required in the extrusion molding process and abrasion of the die 14.
The emulsifier comprises one or more of polyglycerol fatty acid ester, tween-80 and polyvinyl alcohol. The emulsifier can slow down the loss of the fragrant substances in the storage process to a certain extent, increase the stability of the fragrant substances and improve the sensory quality of the product.
In one embodiment, the smoke source may include one or more combinations of monohydric alcohols (e.g., menthol), polyhydric alcohols (e.g., propylene glycol, glycerol, triethylene glycol, 1, 3-butylene glycol, and tetraethylene glycol), esters of polyhydric alcohols (e.g., glyceryl triacetate, triethyl citrate, glyceryl diacetate mixture, triethyl citrate, benzyl benzoate, tributyrin), monocarboxylic acids, dicarboxylic acids, polycarboxylic acids (e.g., lauric acid, myristic acid), or aliphatic esters of polycarboxylic acids (e.g., dimethyl dodecanedioate, dimethyl tetradecanedioate, erythritol, 1, 3-butanediol, tetraethylene glycol, triethyl citrate, propylene carbonate, ethyl laurate, termitidine (Triactin), meso-erythritol, glyceryl diacetate mixture, diethyl suberate, triethyl citrate, benzyl benzoate, benzyl phenylacetate, ethyl benzoate, tributyrin, lauryl acetate).
In one embodiment, the binder material is in intimate contact by interfacial wetting with the component materials, creating intermolecular attractive forces that act to bind the component materials, e.g., powders, liquids, etc. The binder material may be natural plant extracted, nonionic modified viscous polysaccharide, including one or more of tamarind polysaccharide, guar gum, and modified cellulose (such as carboxymethyl cellulose). The adhesive is used for bonding particles together, is not easy to loosen, improves the water resistance of the aerosol generating substrate and is harmless to human bodies.
In one embodiment, the perfume raw materials are used to provide a characteristic aroma, such as a solid or liquid substance of hay, roasted sweet, nicotine. The flavor raw materials may include one or more combinations of tobacco, flavored plant extracts, essential oils, absolute oils, and the flavor raw materials may include one or more combinations of monomeric flavoring substances, such as megastigmatrienone, neophytadiene, geraniol, nerol, and the like.
In one embodiment, the extrusion temperature for ambient extrusion is between 35 ℃ and 70 ℃. For example, the extrusion temperature of the normal temperature extrusion is 35 ℃, 36 ℃, 37 ℃, 40 ℃, 45 ℃, 50 ℃, 55 ℃, 60 ℃, 65 ℃, 68 ℃, 70 ℃, or the like. The extrusion temperature in the normal-temperature extrusion process is higher, so that the energy consumption is higher, the extrusion efficiency is influenced by the lower extrusion temperature, and the extrusion temperature of the normal-temperature extrusion is between 35 ℃ and 70 ℃, so that the energy consumption and the extrusion efficiency can be both considered.
In one embodiment, the extrusion pressure of the ambient temperature extrusion is between 0.5bar and 300 bar. Illustratively, the extrusion pressure for ambient extrusion is 0.5bar、35bar、40bar、45bar、50bar、55bar、60bar、65bar、70bar、75bar、80bar、85bar、90bar、95bar、100bar、150bar、200bar、250bar、280bar or 300bar, and so on. Extrusion pressure can affect the shape of the extruded substrate 100, the smoothness of the outer surface, yield, and production rate, among others. At extrusion pressures of less than 0.5bar, the extrusion matrix 100 has a low formation rate, a high reject ratio, which in turn leads to a slow production rate and a high production cost, and at extrusion pressures of more than 300bar, the drive structure of the extrusion device 1 has a high load (i.e. a high torque is required), which leads to a reduced service life of the extrusion device 1.
The extrusion pressure refers to a pressure at a discharge port of the extrusion apparatus, for example, at an adapter or a die.
In one embodiment, the extrusion pressure of the ambient temperature extrusion is between 20bar and 80 bar. Exemplary extrusion pressures for ambient temperature extrusion are 20bar, 22bar, 25bar, 30bar, 36bar, 39bar, 44bar, 52bar, 60bar, 64bar, 68bar, 71bar, 75bar, 78bar, 80bar, or the like. The extrusion pressure is less than 20bar, the molding rate is not obviously improved, and the energy consumption of the extrusion device 1 is greatly increased and the molding rate is not greatly changed under the condition that the extrusion pressure is more than 80bar, so that the extrusion pressure of normal-temperature extrusion is between 1bar and 30bar, and the molding rate and the energy consumption can be both considered.
Exemplary, in one embodiment, the temperature of the hot air drying is between 50 ℃ and 200 ℃. For example, the temperature of the hot air drying is 50 ℃, 60 ℃, 63 ℃,65 ℃, 70 ℃, 72 ℃, 74 ℃, 85 ℃, 90 ℃, 95 ℃, 100 ℃, 128 ℃, 130 ℃, 135 ℃, 140 ℃, 145 ℃, 150 ℃, 160 ℃, 170 ℃, 180 ℃, 190 ℃, 200 ℃, or the like. Under the condition that the temperature of hot air drying is less than 50 ℃, the drying time is long, the production efficiency is low, the occupied area of the hot air drying device 2 is large, and the equipment cost is high. Under the condition that the temperature of hot air drying is higher than 200 ℃, the water on the surface of the extrusion matrix 100 is quickly evaporated, the water in the extrusion matrix 100 is slowly evaporated, so that the outer surface of the extrusion matrix 100 is quickly contracted, the uniform and stable form and components of the extrusion matrix 100 are not facilitated, the aroma components and effective substances in the mixed materials, such as plant alkali and/or fumigant, are easy to lose due to heat, the quality of the aerosol generating matrix is reduced due to high manufacturing cost, and the use experience of users is reduced.
Exemplary, in one embodiment, the temperature of the hot air drying is between 75 ℃ and 125 ℃. For example, the temperature of the hot air drying is 75 ℃, 76 ℃, 80 ℃, 81 ℃, 82 ℃, 83 ℃, 86 ℃, 91 ℃, 94 ℃, 96 ℃, 98 ℃, 99 ℃, 101 ℃, 105 ℃, 106 ℃, 110 ℃, 120 ℃, 125 ℃, or the like. By adopting the temperature, the extrusion matrix 100 can realize low-temperature slow drying, the evaporation rate of the liquid inside the extrusion matrix 100 and the evaporation rate of the liquid outside the extrusion matrix 100 tend to be consistent under the condition of ensuring higher drying efficiency, the probability of the variation of the form of the extrusion matrix 100 along with the hot air drying is reduced, the aroma components and the effective substances in the mixed materials, such as plant alkaloids and/or fuming agents, are not easy to be heated and lost, the aroma components and the effective substances can be reserved as much as possible, and the quality of the finished aerosol generating matrix is ensured.
In one embodiment, the moisture content of the dried extruded matrix 100 is 3% to 20%. Preferably, the moisture content of the dried extruded matrix 100 is between 4% and 13%. Illustratively, the moisture content of the dried extruded substrate 100 is 3%, 4%, 5%, 10%, 11%, 13%, 15%, 16%, 18%, or 20%, etc. When the moisture content of the dried extruded matrix 100 is less than 3%, the dried extruded matrix 100 is fragile in the subsequent production and processing process, so that the subsequent production reject ratio of the dried extruded matrix 100 is high, the production cost is further increased, and the impurity gas generated by the aerosol generating matrix is high in the heating and sucking process, so that the sucking experience is influenced. When the moisture content of the dried extruded matrix 100 is greater than 20%, the moisture content of the aerosol of the dried extruded matrix 100 is high in the heating and sucking process, so that a nozzle scalding phenomenon is easily generated in the sucking process, and the sucking experience is reduced.
In one embodiment, the extruded substrate 100 has air passages 100a extending therethrough at opposite ends in the longitudinal direction, and the flow direction of the hot air is parallel to the longitudinal direction of the extruded substrate 100 during the hot air drying process. The hot air may not only contact the outer circumferential surface of the extrusion substrate 100, but also enter the air passage 100a, thereby increasing the contact area of the hot air with the extrusion substrate 100 and improving the drying efficiency.
In one embodiment, after the mixture is extruded to form an extruded matrix by extrusion at ambient temperature, the method of manufacture comprises:
s300, cutting the extruded substrate.
Referring to fig. 2 and 3, the extruded substrate 100 may be cut by the cutting device 6 so that the extruded substrate 100 reaches a set length. The extruded substrate 100 may be slit into a plurality of media segments such that the media segments have a set length such that the media segments may be adapted for use in a subsequent hot air drying device 2, reducing the requirements for the subsequent device.
It will be appreciated that the specific values of the set length are not limited and the set length may be set according to the aerosol-generating substrate or according to the equipment conditions of the manufacturing system.
In some embodiments, the extruded substrate 100 extruded through ambient temperature extrusion is in a continuous structure. That is, during extrusion, the extruded substrate 100 is continuously extruded such that the extruded substrate 100 is in a continuous structure. Continuous extrusion can improve extrusion efficiency by subsequently slitting the extruded substrate 100 into multiple media segments to reduce length.
In some embodiments, the extruded substrate 100 is in a segmented structure of a predetermined length. That is, during extrusion, the extruded substrate 100 reaches a predetermined length, i.e., separates naturally. For example, it may be that the extrusion matrix 100 reaches a predetermined length and then is separated from the die 14 due to itself reaching a critical value. Thus, the predetermined length of the extruded substrate 100 may be the length of the aerosol-generating substrate, or the extruded substrate 100 may not be slit, so that the slitting device 6 may be omitted and the equipment cost may be reduced.
It is understood that the preset length may be greater than, less than, or equal to the set length.
It should be noted that, in some embodiments, step S300 may be performed before step S200, that is, the extruded substrate 100 may be slit before the extruded substrate 100 is dried by hot air. In some embodiments, step S300 may follow step S200, that is, the extruded substrate 100 may be slit after the extruded substrate 100 is dried with hot air.
Illustratively, in one embodiment, the method of manufacture includes S500, shaping the extruded matrix. Shape correction refers to circumferential and/or straightness correction of the extruded substrate 100 by the jig. Straightness refers to the degree of bending in the longitudinal direction of the extruded substrate 100.
Since the texture of the extruded substrate 100 extruded by extrusion at normal temperature is generally relatively soft, deformation of the circumference of the extruded substrate 100 and/or bending of the extruded substrate 100 in the longitudinal direction during the manufacturing process of the extruded substrate 100, for example, deformation of the circumference of the extruded substrate 100 and/or bending of the extruded substrate 100 in the longitudinal direction may be caused during the slitting process of the extruded substrate 100 by the slitting device 6, and thus, the extruded substrate 100 may be subjected to circumferential and/or straightness correction by the jig.
It should be noted that step S500 may be performed in any case requiring a calibration after step S100, and that one or more steps S500 may be performed during the entire manufacturing process of the aerosol-generating substrate. For example, step S500 may be performed before and/or after step S300. For another example, step S500 may be implemented before step S200.
In one embodiment, the method of making comprises, prior to hot air drying the extruded substrate:
S400, hardening the extruded matrix.
Because the mixture is a solid-liquid mixture, the hardness of the extruded matrix 100 after normal-temperature extrusion is low, so that the extruded matrix 100 after normal-temperature extrusion is easy to deform, and the shape of the extruded matrix 100 is difficult to maintain, and in order to improve the stability of the shape of the extruded matrix 100, the extruded matrix 100 is hardened to improve the hardness thereof, so that the subsequent production process is convenient.
In some embodiments, the hardness of the extruded matrix 100 before hardening is between 0HB and 100HB, including 0HB and 100HB, which makes the extruded matrix 100 before hardening soft and easily deformable.
In one embodiment, the hardness of the hardened extruded substrate 100 is between 1HB and 200 HB. Preferably, the hardness of the extruded matrix 100 after hardening is between 40HB and 120 HB. Illustratively, the hardness of the extruded substrate 100 after hardening is 1HB、10HB、20HB、30HB、40HB、50HB、55HB、60HB、70HB、80HB、85HB、90HB、95HB、100HB、110HB、120HB、130HB、140HB、150HB、160HB、170HB、180HB、190HB or 200HB, and so forth. Under the hardness range, the hardened extrusion matrix 100 can well maintain the shape, the situation that the outer surface of the hardened extrusion matrix 100 is adhered to other structures is avoided, the hardened extrusion matrix 100 is easy to cut, the cut extrusion matrix 100 is not easy to deform, and the end face formed by cutting is integral and complete.
More preferably, the hardness of the extruded substrate 10 before cooling and hardening may be 1 to 60HB (including 1HB and 60 HB), the hardness of the extruded substrate 10 after cooling and hardening may be 40 to 120HB (including 40HB and 120 HB), and the hardness of the extruded substrate 10 after hot air drying may be 40 to 300HB (including 40HB and 300 HB). Preferably, the hardness of the extruded substrate 10 after hot air drying may be 80HB to 250HB (including 80HB and 250 HB).
HB is Brinell hardness.
In one embodiment, the hardening of the extruded matrix comprises:
Hardening the extruded matrix by cooling.
Specifically, the extruded matrix 100 is cooled to harden at a cooling ambient temperature that is lower than the hardening temperature of the extruded matrix 100.
Illustratively, the cure temperature of the extruded matrix 100 is from-100 ℃ to 60 ℃ (including-100 ℃ and 60 ℃), and preferably, the cure temperature of the extruded matrix 10 is from-30 ℃ to 40 ℃ (including-30 ℃ and 40 ℃).
The cooling ambient temperature is between-270 ℃ and 60 ℃ (including-270 ℃ and 60 ℃). Preferably, the cooling ambient temperature is between-100 ℃ and 40 ℃ (inclusive of-100 ℃ and 40 ℃).
In one embodiment, the temperature of the extruded matrix 100 prior to curing is between 0 ℃ and 40 ℃, and the temperature of the extruded matrix 100 after curing is between-50 ℃ and 5 ℃. Illustratively, the temperature of the extruded matrix 100 after hardening is-50 ℃, -45 ℃, -40 ℃, -39 ℃, -35 ℃, -30 ℃, -25 ℃, -20 ℃, -15 ℃, -10 ℃, -5 ℃,0 ℃,1 ℃,3 ℃,5 ℃, or the like.
As shown in fig. 2, in one embodiment, the extruded substrate 100 is extruded in a horizontal direction. For example, the discharge port 12b is oriented in the horizontal direction, and the die 14 may be disposed in the horizontal direction. For example, for the extruded substrate 100 having a curved shape, such as the spiral air channel 100a, after the extruded substrate 100 is extruded in the horizontal direction, the extruded substrate 100 may directly enter the next device through the rotating die, and the horizontal extrusion may reduce the stress generated by the extruded substrate 100 after rotation to be directly released (the generated stress may be eliminated by heating), so as to improve the yield of the aerosol-generating substrate having the spiral air channel 100 a.
As shown in fig. 3, in one embodiment, the extruded substrate 100 is extruded in a vertical direction relative to a horizontal direction. For example, the discharge port 12b is directed downward, the extrusion direction is perpendicular to the horizontal plane, and the die 14 may be disposed in the vertical direction. That is, the extruded matrix 100 is extruded in the direction of gravity. For example, for the extrusion matrix 100 having the linear air passage 100a, extrusion matrix 100 is extruded in the vertical direction, which can improve yield and reduce input cost of the extrusion device 1, and in addition, can reduce the floor space of the extrusion device 1.
In one embodiment, the extruded substrate 100 is extruded in an oblique direction relative to the horizontal. By oblique direction is meant that the angle between the extrusion direction of the extruded substrate 100 and the horizontal plane is greater than 0 ° and less than 90 °. The inclined extrusion not only can reduce the extrusion pressure of the mixed materials, but also can facilitate the space design of other equipment such as the hot air drying device 2 and the like.
The following shows the manufacturing method of the present application in several specific examples, which are specifically described below:
In a first embodiment, steps S100, S400, S300, S200 are sequentially performed to obtain an aerosol-generating substrate. In this embodiment, the extruded substrate 100 is extruded in step S100, the extruded substrate 100 is hardened in step S400, the hardness of the extruded substrate 100 can be increased by hardening, so that the slitting in step S300 is performed, and finally the moisture of the extruded substrate 100 is reduced in step S200, so as to obtain the finished aerosol-generating substrate.
In a second embodiment, the aerosol-generating substrate is obtained by sequentially passing steps S100, S300, S200. The difference between this embodiment and the first embodiment is that the hardening step is reduced, that is, the extruded substrate 100 extruded from the extrusion device 1 can be directly slit, and in the case where the length of the aerosol-generating substrate is short, the hardening step can be omitted without the trace deformation caused by the slit having an influence on the subsequent production.
In a third embodiment, the aerosol-generating substrate is obtained by sequentially passing steps S100, S200, S300. The difference between this embodiment and the second embodiment is that the hot air drying step and the slitting step are exchanged in order, and in this embodiment, the extruded substrate 100 extruded from the extrusion device 1 is first hot air dried and then slit. The extruded substrate 100 may undergo volumetric shrinkage upon hot air drying, and the longitudinal dimensional uniformity of the aerosol-generating substrate after slitting may be improved by hot air drying followed by slitting.
In a fourth embodiment, the aerosol-generating substrate is obtained by sequentially passing through steps S100, S200. The difference between this embodiment and the first embodiment is that the hardening step and the slitting step are reduced, that is, the extruded substrate 100 is hot air dried to obtain the finished aerosol-generating substrate. Illustratively, the extruded substrate 100 is extruded in a vertical direction, the extruded substrate 100 reaches a predetermined length (e.g., the extruded substrate 100 reaches a critical value), the extruded substrate 100 naturally breaks away (separates), and the predetermined length of the extruded substrate 100 is the length required for the aerosol-generating substrate. Therefore, the hardening step and the slitting step can be omitted, so that the subsequent treatment process is reduced, and the production cost is reduced.
In one embodiment, a method of manufacture includes:
the outer surface of the aerosol-generating substrate is wrapped with a wrapping means.
Referring to fig. 2 and 3, the aerosol-generating substrate enters a packaging unit 7, and the packaging unit 7 wraps the packaging layer onto the outer surface of the aerosol-generating substrate.
The packaging layer includes, but is not limited to, one or more combinations of fiber paper, metal foil composite fiber paper, polyethylene composite fiber paper, PE (Polyethylene), PBAT (Polybutylene ADIPATE TEREPHTHALATE ), and the like.
In some embodiments, the aerosol-generating article may be formed by combining the functional segments after the outer surface of the aerosol-generating substrate is wrapped around the wrapper.
In other embodiments, the aerosol-generating substrate may be combined with the functional segment and then wrapped around both the aerosol-generating substrate and the outer surface of the functional segment to form the aerosol-generating article.
In still other embodiments, the outer surface of the aerosol-generating substrate may be wrapped around the wrapper and then combined with the functional segment and wrapped around the wrapper to form the aerosol-generating article. That is, the outer surface of the aerosol-generating substrate may be wrapped around a multi-layer packaging layer.
Referring to fig. 2 and 3, the embodiment of the present application further provides a manufacturing system of aerosol-generating substrate, which comprises an extrusion device 1 and a hot air drying device 2.
The extrusion device 1 is used for extruding the mixture at normal temperature to form an extruded matrix 100.
The hot air drying device 2 is used for hot air drying the extruded substrate 100.
The manufacturing system provided by the embodiment of the application has the advantages that if the extrusion temperature is too low, the fluidity of the mixed materials is poor, the production speed and the efficiency of the extrusion device 1 are low, the torque required to be provided by the extrusion device 1 at the temperature is higher, the service life of equipment is influenced, and if the extrusion temperature is too high, the energy consumption of the extrusion device 1 is higher, so that the production cost is increased. The shrinkage of the extruded matrix 100 during hot air drying is small, the drying time is short, and continuous production is facilitated. The normal temperature extrusion and hot air drying are used together, so that the equipment cost investment is low, continuous production can be realized, the production efficiency is high, and the manufacturing cost is low; the extruded matrix 100 is uniform and stable and has high processability.
In an embodiment, referring to fig. 2 and 3, the hot air drying device 2 includes a box 21, a fan 22, and a heating element 23, where the box 21 has a drying chamber 21a, the fan 22 is used to drive airflow in the drying chamber 21a to flow, the heating element 23 is disposed in the drying chamber 21a, and the heating element 23 is used to heat airflow in the drying chamber 21 a. In this manner, heat is generated by the heating member 23 to heat the air flow in the drying chamber 21 a.
In some embodiments, the number of heating elements is at least two, the at least two heating elements being spaced apart in an up-down direction, and the extruded substrate being conveyed between the at least two heating elements. In one embodiment, referring to fig. 2 and 3, the number of heating elements 23 is two, the two heating elements 23 are spaced apart in the up-down direction, and the extruded substrate 100 is transferred between the two heating elements 23. In this way, the two heating members 23 bake the extruded substrate 100 simultaneously from above and below, so that the extruded substrate 100 can be heated uniformly, the form stability of the extruded substrate 100 can be improved, the dehydration efficiency can be improved, and the load of the single heating member 23 can be reduced. In other embodiments, the number of heating elements may be two or more, and the number of heating devices may be flexibly set according to the transport length direction of the hot air drying device 2 and the length of the heating devices.
In some embodiments, only one heating element 23 may be provided. When the heating efficiency of the heating member 23 is high, a good drying effect can be achieved.
The heating element 23 is not limited in its structural shape, and, for example, referring to fig. 2 and 3, the heating element 23 has a plate-like structure. The heating element 23 may be in the form of a flat plate or a curved plate. The heating element 23 of plate-like structure may be placed in a horizontal direction. That is, the thickness direction of the heating element 23 of the plate-like structure is perpendicular to the horizontal direction.
The heating element 23 includes, but is not limited to, resistive heating.
In one embodiment, referring to fig. 4 and 5, the hot air drying device 2 includes a conveyor belt 25, a surface of the conveyor belt 25 facing the extruded substrate 100 is formed with a plurality of grooves 25a, the plurality of grooves 25a are spaced along a conveying direction of the conveyor belt 25, each groove 25a is used for placing a corresponding extruded substrate 100, and at least a portion of the extruded substrate 100 is located in the groove 25 a. Illustratively, a plurality of grooves 25a are arranged at intervals along the conveying direction of the conveyor belt 25, the length direction of the grooves 25a intersecting the conveying direction. Both ends in the longitudinal direction of the groove 25a penetrate both ends in the width direction of the conveying belt 25. In one aspect, the groove wall surface of groove 25a may limit movement of extruded substrate 100 to avoid displacement of extruded substrate 100 during transport. On the other hand, each groove 25a is used for placing one extruded substrate 100, and the grooves 25a can prevent the plurality of extruded substrates 100 from contacting adhesion. In other embodiments, after the extruded substrate 100 is cut, each groove 25a may be placed with a plurality of extruded substrates 100, and the end surfaces of the plurality of extruded substrates 100 may be spaced apart, and the extruded substrates 100 adjacent to the grooves 25a may prevent blocking. Preferably a recess 25a accommodates an extruded substrate 100.
In one embodiment, the recess 25a is formed with a placement opening. The extrusion substrate 100 is placed into the recess 25a through the placement port.
Illustratively, the cross-sectional shape of the groove 25a is not limited, and the cross-sectional shape of the groove 25a may be semicircular or semi-elliptical, or the like.
In some embodiments, the hot air drying device 2 may also include a clamping member for clamping the extruded substrate 100 to secure the extruded substrate 100 on the conveyor belt 25. The clamp limits movement of the extruded substrate 100 relative to the conveyor belt 25. Illustratively, the clamping member is formed with a clamping groove for placing the extruded substrate 100.
In one embodiment, referring to fig. 2 and 3, the case 21 is formed with a conveying inlet 21b and a conveying outlet 21c, both communicating with the drying chamber 21a, at least part of the conveying belt 25 is located in the drying chamber 21a, and the conveying belt 25 is used to convey the extruded substrate 100 from the conveying inlet 21b to the conveying outlet 21c. Illustratively, the portion of the conveyor belt 25 within the housing 21 is located between the two heating elements 23. The extruded substrate 100 is placed onto the conveyor belt 25 through the conveyor inlet 21b and is conveyed by the conveyor belt 25 to the conveyor outlet 21c. The transport of the extruded substrate 100 may be achieved by a conveyor belt 25.
In one embodiment, referring to fig. 4, the extruded substrate 100 has air passages 100a extending through opposite ends of the extruded substrate in the longitudinal direction, and the hot air drying device 2 includes a diversion channel 24 for diversion of hot air, and an air outlet 24a of the diversion channel 24 is located at one side of the extruded substrate 100 in the longitudinal direction. That is, the air outlet 24a of the diversion channel 24 is directed to the opening of the air passage 100a of the extruded substrate 100. In this way, the air flow blown out from the air outlet 24a of the diversion channel 24 can enter the air passage 100a through the opening of the air passage 100a, for example, in the hot air drying process, the flowing direction of the hot air is parallel to the longitudinal direction of the extruded substrate 100, so that the contact area between the hot air and the extruded substrate 100 can be increased, and the drying efficiency can be improved.
In an exemplary embodiment, referring to fig. 4, the outlet of the fan 22 is connected to the air inlet 24b of the diversion channel 24, so that the air flow from the fan 22 can flow out from the air outlet 24a of the diversion channel 24. The heating element 23 may be disposed in the diversion channel 24, and the heating element 23 may also be disposed in the casing of the fan 22.
It can be understood that the air outlet direction of the air outlet 24a of the air guiding channel 24 and the longitudinal direction of the extruded substrate 100 may also form a certain inclination angle, so that the inner surface and the outer surface of the extruded substrate 100 may be heated simultaneously, and the drying efficiency may be improved.
In one embodiment, referring to fig. 2 and 3, the manufacturing system includes a microwave assist device 3 positioned at least partially within the drying chamber 21a, the microwave assist device 3 drying the extruded substrate 100 by emitting microwave radiation. The microwave radiation drying refers to that the polar molecules in the extrusion matrix 100 are subjected to intense vibration and heat generation through microwaves to promote the evaporation of moisture in the extrusion matrix 100, so that the hot air drying temperature can be reduced, the drying time can be shortened, and the aroma components and the effective substance retention rate in the aerosol-generating matrix can be improved.
For example, in some embodiments, microwave radiation drying may be employed prior to or concurrent with hot air drying.
In one embodiment, referring to fig. 2 and 3, the manufacturing system includes an ultrasonic-assisted device 4 positioned at least partially within the drying chamber 21a, the ultrasonic-assisted device 4 drying the extruded substrate 100 by emitting ultrasonic radiation. The ultrasonic radiation drying means that the moisture in the extrusion matrix 100 generates cavitation effect by ultrasonic wave, the moisture volatilization temperature is reduced, the moisture volatilization is promoted, the hot air drying temperature can be reduced, the drying time can be shortened, and the aroma components and the effective substance retention rate in the aerosol generating matrix can be improved.
For example, in some embodiments, ultrasonic radiation drying may be employed prior to or concurrent with hot air drying.
In an embodiment, referring to fig. 2 and 3, the microwave assist device 3 may be disposed above or below any one of the heating elements 23. By such design, the microwave, such as electromagnetic wave, emitted by the microwave auxiliary device 3 has a wider range, so that the extrusion substrate 100 can be heated more uniformly.
In one embodiment, the microwave assist device 3 may be provided on both sides of the conveyor belt 25 in the width direction thereof. So designed, the microwave energy loss of the microwave, such as electromagnetic wave energy, emitted by the microwave auxiliary device 3 is smaller, and the overall heating rate can be improved.
In an embodiment, referring to fig. 2 and 3, the ultrasonic auxiliary device 4 may be disposed above or below any one of the heating elements 23. By such design, the ultrasonic wave range emitted by the ultrasonic auxiliary device 4 is wider, so that the extruded substrate 100 can be heated more uniformly.
In one embodiment, the ultrasonic-assisted devices 4 may be provided on both sides of the conveyor belt 25 in the width direction thereof. By the design, the ultrasonic energy loss emitted by the ultrasonic auxiliary device 4 is smaller, and the overall heating rate can be improved.
In one embodiment, referring to fig. 2,3, 6 and 7, the extrusion apparatus 1 includes an extrusion barrel 12, an extrusion screw 13 and a die 14, the extrusion barrel 12 including an extrusion chamber 12a for containing a mixture and a discharge port 12b communicating with the extrusion chamber 12 a. The extrusion screw 13 is rotatably disposed in the extrusion chamber 12 a. The die 14 is disposed at the discharge port 12b, and the extrusion screw 13 pushes the mixture to extrude from the die 14 to form the extrusion matrix 100. The extrusion screw 13 is used to push the mixed material toward the discharge port 12b. Illustratively, during rotation of the extrusion screw 13, the mixed material can flow along the flighted passageway of the circumferential face of the extrusion screw 13 toward the discharge port 12b. Die 14 is used to form extrusion matrix 100 having a set cross-sectional shape.
In one embodiment, referring to fig. 8, the extrusion device 1 includes a bottom die 15, and a die 14 is disposed on the bottom die 15. The bottom die 15 provides a mounting location for the die 14.
In one embodiment, bottom die 15 is connected to discharge port 12b. In this way, the mixture is extruded through the die 14. The bottom die 15 can collect the mixed material of the discharge port 12b.
In one embodiment, a single die 15 is provided on one die 14. That is, a single mode single port is employed. In this way, the extrusion screw 13 can be smaller in size.
In one embodiment, referring to fig. 8, a single die 15 is provided with a plurality of dies 14. That is, a single mode multiple port is employed. The mixed material passes through a plurality of dies 14 to simultaneously form a plurality of extruded matrices 100. Therefore, the production efficiency can be improved, and the method is suitable for batch production.
In one embodiment, referring to fig. 9, the number of the bottom dies 15 is plural, the extrusion device 1 includes an adapter 16, the bottom dies 15 are disposed on the adapter 16, and the adapter 16 is connected to the discharge port 12b. That is, multimode, multiport is employed. More dies 14 may be installed than a single die multiple die, multiple die, to simultaneously form more extruded matrix 100. Therefore, the production efficiency can be improved, and the method is more suitable for batch production.
In one embodiment, referring to fig. 2,3 and 10, the manufacturing system includes a curing device 5, the curing device 5 being configured to cure the extruded substrate 100. The hardening device 5 is used for hardening the extruded matrix 100 to increase the hardness of the extruded matrix 100. The stiffening means 5 is located downstream of the extrusion means 1 in the direction of flow of the extruded matrix 100.
In one embodiment, referring to fig. 10, the hardening device 5 includes a housing 51, where the housing 51 is formed with an inlet 51a, a cold chamber 51b, and an outlet 51c, and the inlet 51a and the outlet 51c are both in communication with the cold chamber 51b, and the cold chamber 51b is used to cool the hardened extruded substrate 100. Extruded matrix 100 enters cold chamber 51b through inlet 51a, cools and hardens through cold chamber 51b, and exits housing 51 through outlet 51 c.
In one embodiment, referring to fig. 10, the housing 51 is formed with an injection port 51d, and the injection port 51d communicates with the cold chamber 51b to inject the refrigerant into the cold chamber 51b. The coolant contacts the extrusion matrix 100 in the cold chamber 51b to absorb heat of the extrusion matrix 100, thereby cooling the hardened extrusion matrix 100. The outer surface of the extrusion matrix 100 can be rapidly cooled and hardened, the stability of the form of the extrusion matrix 100 is maintained, the continuous production is facilitated, and the production efficiency is improved.
The refrigerant may be liquid, gaseous or solid, and exemplary refrigerants include, but are not limited to, liquid nitrogen or liquefied air, and the like.
In one embodiment, referring to fig. 10, the injection port 51d may be formed on the upper surface of the housing 51. Thus, the coolant may enter the cold chamber 51b from top to bottom to contact the extruded substrate 100 on the conveyor 52.
In one embodiment, referring to fig. 10, the rigidifying apparatus 5 comprises a conveyor 52, at least a portion of the conveyor 52 being positioned within the cold chamber 51b, the conveyor 52 being configured to convey the extruded substrate 100 from the inlet 51a to the outlet 51c. Extruded substrate 100 is placed onto conveyor 52 through inlet 51a and conveyed by conveyor 52 to outlet 51c. Continuous transport of the extruded substrate 100 is achieved by the conveyor belt 52 so that the extruded substrate 100 can be continuously subjected to the hardening treatment by the hardening device 5 to achieve continuous production. The surface of the conveyor belt 52 facing the extrusion substrate 100 is formed with a plurality of guide grooves 52a, each guide groove 52a being for receiving a strip of extrusion substrate 100, at least a portion of the extrusion substrate 100 being located within the guide groove 52 a. In one aspect, the groove wall surfaces of guide groove 52a may limit movement of extruded substrate 100 to avoid displacement of extruded substrate 100 during transport. On the other hand, each guide groove 52a is used for placing one extruded substrate 100, and the guide grooves 52a can prevent the plurality of extruded substrates 100 from contacting adhesion.
Illustratively, the length direction of the guide grooves 52a coincides with the conveying direction of the conveyor belt 52, and a plurality of guide grooves 52a are arranged at intervals along the width direction of the conveyor belt 52.
In one embodiment, the guide groove 52a is formed with a pick-and-place opening. The extruded substrate 100 is placed into the guide groove 52a through the pick-and-place port.
Illustratively, the cross-sectional shape of the guide groove 52a is not limited, and the cross-sectional shape of the guide groove 52a may be semicircular or semi-elliptical, or the like.
For example, in one embodiment, referring to fig. 10, the injection port 51d extends in a direction intersecting the conveying direction of the conveyor belt 52.
In one embodiment, referring to fig. 11 and 12, the housing 51 is formed with a cooling medium channel 51e, the cooling chamber 51b is isolated from the cooling medium channel 51e and is located in the cooling medium channel 51e, and the extrusion substrate 100 contacts with the wall surface of the cooling chamber 51 b. That is, the coolant does not contact the extrusion matrix 100. The refrigerant flows in the refrigerant passage 51e, and the extruded substrate 100 transfers heat with the refrigerant through the wall surface of the cooling chamber 51 b. This avoids the problem of the extruded matrix 100 directly contacting the refrigerant, expanding after rapid cooling, and cracking.
In one embodiment, referring to fig. 11 and 12, the housing 51 includes an outer shell 511 and an inner shell 512, the inner shell 512 forming a cold chamber 51b, the inner shell 512 being located within the outer shell 511 and together defining a refrigerant passage 51e. The casing 51 has a double-layered structure, the refrigerant passage 51e defined by the outer casing 511 and the inner casing 512 is used for flowing the refrigerant, the cold chamber 51b and the refrigerant passage 51e are isolated by the inner casing 512, and the extrusion matrix 100 contacts with the inner surface of the inner casing 512 to transfer heat to the refrigerant through the inner casing 512.
In one embodiment, the smoothness of the chamber wall surface of the cold chamber 51b is between Ra1.2μm to Ra0.08μm. Ra refers to the average roughness value of a surface, and is used to represent the finish and roughness of the surface. Illustratively, the smoothness of the cavity wall surface of the cold cavity 51b is Ra1.2 μm, ra1.1 μm, ra1.0 μm, ra0.5 μm, ra0.3 μm, ra0.1 μm, ra0.08 μm, or the like. The cavity wall surface of the cold cavity 51b is a smooth surface, and friction between the cavity wall surface of the cold cavity 51b and the outer surface of the extrusion matrix 100 is small, and deformation of the extrusion matrix 100 is not caused.
In one embodiment, the hardening device 5 includes a coolant supply device connected to the injection port 51d or connected to the coolant channel 51 e. That is, the refrigerant supply device is configured to inject the refrigerant into the injection port 51 d. Or a refrigerant supply for injecting a refrigerant into the refrigerant passage 51 e.
In one embodiment, referring to fig. 2 and 3, the manufacturing system includes a slitting device 6 having a slitting tool 61, the slitting tool 61 slitting the extruded substrate 100 by physical contact or non-physical contact.
Physical contact refers to slitting the extruded substrate 100 by direct contact of the slitting tool 61 with the extruded substrate 100. For example, the slitting tool 61 can be a rotary hob, a cutting blade, a cutting wire, a roll cut, or a press.
By non-physical contact, it is meant that the slitting tool 61 does not need to be in direct contact with the extruded substrate 100, but rather that the substance released by the slitting tool 61 slits the extruded substrate 100. For example, the slitting tool 61 releases a laser, plasma, air knife, or water knife by which the extruded substrate 100 is cut.
It should be noted that, the manufacturing system adopted in the embodiment of the present application may be used in the manufacturing method of the embodiment of the present application, and the description of the embodiment of the manufacturing system is similar to the description of any one embodiment of the manufacturing method, which has the same advantageous effects as those of the embodiment of the manufacturing method. For technical details not disclosed in the manufacturing method according to the embodiment of the present application, please refer to descriptions of embodiments of the extrusion device 1, the hot air drying device 2, the hardening device 5 and the slitting device 6 according to the embodiment of the present application.
In the description of the present application, reference to the terms "one embodiment," "some embodiments," "other embodiments," "still other embodiments," or "exemplary" etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In the present application, the schematic representations of the above terms are not necessarily for the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the various embodiments or examples described in the present application and the features of the various embodiments or examples may be combined by those skilled in the art without contradiction.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application are included in the protection scope of the present application.