A kind of melt-blow nonwoven processing unit (plant)Technical field
The present invention relates to Nonwovens In Technology fields, and in particular to a kind of melt-blow nonwoven processing unit (plant).
Background technology
Non-woven cloth is also known as nonwoven fabric, non-woven fabrics, is made of fiber orient or random, is environmentally friendly material of new generationMaterial, because with cloth appearance and certain performances due tos be called cloth.Non-woven cloth does not have latitude and longitude, cuts out and sews and is all very squareJust, and light easy sizing, depth are liked by manual fan.In numerous non-woven cloths, melt-blow nonwoven is weightThe one kind wanted.However, the big multicomponent of traditional melt-blow nonwoven is single, the application of melt-blown product is constrained therefrom.Nowadays,Technical staff has begun that staple fiber or functional additive etc. are added in melt-blow nonwoven, so that product is with antistaticProperty, electric conductivity, hygroscopicity, enhancing barrier property etc., or caking property, bulkiness, the gas permeability of web in non-woven cloth is made to carryIt is high.
However, during adding staple fiber, generally require to convey staple fiber by air-flow.Effect of the staple fiber in air-flowUnder, it is easy to disperse everywhere, influences working environment, also reduce the utilization ratio of raw material, superbhort fiber or powder especially is being addedWhens shape additive etc..Such as application No. is the patent applications of CN201110422881.2, in this application, are purged using blow deviceStaple fibre makes staple fibre and meltblown fibers be mixed.However, the mode of this addition staple fibre, is easy to make artificialFiber disperses in air, influences workshop condition.Meanwhile when adding staple fibre, it is to be added from the outside of meltblown fibers, makesThe additive for obtaining outside is more, and the additive of inside is less, causes additive uneven distribution in the section of final finished, shadowRing the performance of finished product.
Therefore, it is necessary to a kind of device for preventing from dispersing everywhere during the addition meltblown fibers such as staple fiber is designed, withPollution workshop condition is avoided, the utilization ratio of staple fiber etc. is improved.When needing to add several additives, existing process unitsIt is usually inconvenient to add or add irregular.Therefore it also needs to solve the problems, such as that batch mixing is non-uniform.
Invention content
For the prior art there are above-mentioned technical problem, the present invention, which provides one kind, can avoid the additives such as staple fiber from flying everywhereIt dissipates, improves the utilization ratio of staple fiber etc., while can also improve the mixture homogeneity and additives mixed type of additiveMelt-blow nonwoven processing unit (plant).
To achieve the above object, the present invention provides following technical scheme：
A kind of melt-blow nonwoven processing unit (plant), including screw extruder, metering pump, filter, spinneret mixing arrangement and receptionDevice, screw extruder, metering pump, filter and spinneret mixing arrangement pass sequentially through melt conveying pipeline and connect, spinneret mixingThe mixing finished product of device output is received by reception device；It is characterized in that：Spinneret mixing arrangement includes round spinning head, mixingChamber, internal layer drawing mechanism and feed inlet, round spinning head are divided into outer region, at silk region and center from outside to insideDomain；Outer region and central area are enclosed construction, are not provided with spinneret unit；Silk region is provided with spinneret unit；The spraySilk unit includes spinneret orifice and the traction airflow hole of spinneret orifice both sides；The outer side edges in outer region along and central area it is outerAlong a segment length is extended downwardly, the toroidal cavity being consequently formed is mixing chamber for side；The outer side edges of central area are along to downwardIt after stretching a segment length, is sealed by inner bottom plating, and opens up mesh on the cylinder side wall of formation, form internal layer drawing mechanism；Internal layerIt is provided with intermediate bulkhead in the middle part of drawing mechanism, is thus divided into upper outlet device and lower part drawing mechanism；And outer regionOuter side edges form mixing product outlet after extending downwardly a distance, in the cylinder bottom of formation, while in cylinder side wallUpper setting feed inlet；Reception device include multiple conveying rollers, around multiple conveying rollers lace curtaining and be arranged below lace curtaining andFace mixes the getter device of product outlet.
Draw airflow hole injection traction air-flow so that melt from spinneret orifice spray after, by the draw of air-flowStretching attenuates.
Preferably, it is evenly distributed at the spinneret unit in silk region, while one is diametrically reserved at silk regionThe region of fixed width degree is not provided with spinneret unit, in order to be arranged feeding pipeline be connected to internal layer drawing mechanism upper outlet device andLower part drawing mechanism, in order to be persistently fed for upper outlet device and lower part drawing mechanism.It is distributed spinneret unit in this way, it canIt avoids the transport path of the meltblown fibers of spinneret unit formation spatially be overlapped with feeding pipeline, meltblown fibers is made to be adhered to confessionOn pipe material.
Preferably, the mesh of the cylinder side wall of upper outlet device is less than the mesh of the cylinder side wall of lower part drawing mechanism.Upper outlet device can be used for adding powdery additive to meltblown fibers；Lower part drawing mechanism can be used for adding meltblown fibers shortThe additives such as fiber.
Preferably, the outer side edges in outer region are along the segment length that extends downwardly, be more than the outer side edges of central area along toOne segment length of lower extension.It is highly preferred that the outer side edges in outer region are more than central area along the segment length extended downwardlyOuter side edges are along the segment length 5-30mm extended downwardly.In this way, be conducive to the additives such as staple fiber makes in mixed processThe traction air-flow used in air-flow and meltblown fibers forming process, promptly spreads, and is received the air-breathing in deviceDevice absorption is taken away.
Preferably, the spinneret orifice in spinneret unit is special-shaped spinneret orifice.More preferably, special-shaped spinneret orifice is cross, fiveAngle star, Y shape.The spinneret orifice of these shapes is selected, special-shaped meltblown fibers can be formed, and it is viscous to be conducive to the additives such as staple fiberIt is attached on meltblown fibers, while improving the fluffy degree of non-woven cloth.Especially when adding powdery additive, effect is moreSignificantly.
Preferably, it is additionally provided with spiral agitator in internal layer drawing mechanism, this can prevent additive to be deposited on internal layerIn drawing mechanism.After usage, spiral agitator is opened, while being passed through air-flow, internal layer discharging dress can be effectively discharged outResidual additive in setting.
Preferably, it is in truncated cone that can select spinneret mixing arrangement on the whole, this is conducive to mix finished product exit sideJust mixing finished product output, and it is convenient for Diffusion of gas stream.
In addition, the present invention also provides a kind of processing method of melt-blow nonwoven, include the following steps：
（1）Melt prepares：High polymer slice is added in screw extruder and is melted, is transported to later by melt conveying pipelineMetering pump is measured, and the melt after metering is transported to filter by melt conveying pipeline and is filtered, by filteringMelt conveying to spinneret mixing arrangement prepare spinning；
（2）Spinning mixes：Melt conveying is to spinneret mixing arrangement, and using at the spinneret unit in silk region, melt is passing through sprayWhen wire hole sprays, draws and be passed through traction air-flow in airflow hole, and meltblown fibers are formed under the draw of traction air-flow；TogetherWhen, a part of staple fiber feeds mixing chamber under air-flow booster action by feed inlet, and another part staple fiber discharges from internal layerIt is uniformly sprayed in the mesh of the lower part drawing mechanism side wall of device and enters mixing chamber, and powdery additive is from internal layer drawing mechanismUpper outlet device side wall mesh in uniformly spray and enter mixing chamber, thus make staple fiber, powdery additive and melt-blownFiber is obtained by uniformly mixingg mixing finished product；
（3）Finished product receives：Mixing finished product is exported from mixing product outlet, and multiple conveying rollers of reception device rotate clockwise,Mixing finished product is received using lace curtaining, meanwhile, getter device absorbs the air-flow come out from mixing product outlet, and mixing finished product is made to adsorbOn lace curtaining, non-woven cloth is ultimately formed.
The additive that the device can add can be staple fiber, superbhort fiber and powdery additive.Such as the gold of powderyBelong to powder etc..The metal powder for adding powdery, can increase the antistatic property and electric conductivity of non-woven cloth, while again can be to avoidBy metal powder be added to melt at caused by silk metal powder deposition, be unfavorable for the drawbacks of spinning.Certainly, powdery additiveIt can also be that other various functions additives for helping to improve non-woven cloth performance are not construed as limiting specific type.
Advantageous effect
Compared with prior art, the present invention has the advantages that：The melt-blow nonwoven processing unit (plant) of the present invention, Neng GoufangOnly staple fiber, powdery additive etc. are dispersed everywhere during meltblown fibers are added, and to avoid pollution workshop condition, improve short fibreThe utilization ratio of dimension etc..Meanwhile also solving the non-uniform problem of additive batch mixing.Meanwhile this addition manner, it can also addAdd powdery additive, superbhort fiber etc. so that addition manner is not limited by additive physical aspect.The device is simple and practical,Remarkable in economical benefits.
Description of the drawings
Fig. 1 is the overall schematic of the melt-blow nonwoven processing unit (plant) of the present invention；
Fig. 2 is the structural schematic diagram of the spinneret mixing arrangement of the present invention；
Fig. 3 is the structural schematic diagram of the spinneret unit at silk region in the present invention；
Fig. 4 is the vertical view of spinning head in the present invention.
Reference numeral：1, screw extruder；2, metering pump；3, filter；4, spinneret mixing arrangement；5, conveying roller；6, netCurtain；7, getter device；8, finished product is mixed；9, spinneret orifice；10, airflow hole is drawn；11, outer region；12, at silk region；13, inHeart district domain；14, feed inlet；15, inner bottom plating；16, intermediate bulkhead；20, product outlet is mixed.
Specific implementation mode
Below in conjunction with specific embodiment and attached drawing, the present invention is described in detail.
Picture 1-4, a kind of melt-blow nonwoven processing unit (plant), including screw extruder 1, metering pump 2, filter 3, spinneretMixing arrangement 4 and reception device, it is defeated that screw extruder 1, metering pump 2, filter 3 and spinneret mixing arrangement 4 pass sequentially through meltPipeline is sent to connect, the mixing finished product 8 that spinneret mixing arrangement 4 exports is received by reception device；It is characterized in that：Spinneret mixing dressIt includes round spinning head, mixing chamber, internal layer drawing mechanism and feed inlet 14 to set 4, and round spinning head is divided into outer from outside to insideAlong region 11, at silk region 12 and central area 13；Outer region 11 and central area 13 are enclosed construction, are not provided with spinneret listMember；Spinneret unit includes the traction airflow hole 10 of 9 both sides of spinneret orifice 9 and spinneret orifice；Silk region 12 is provided with spinneret unit；The outer side edges edge in outer region 11 and the outer side edges edge of central area 13 extend downwardly a segment length, the annular being consequently formedCavity is mixing chamber；The outer side edges of central area 13 are sealed, and in formation after extending downwardly a segment length by inner bottom plating 15Mesh is opened up on cylinder side wall, forms internal layer drawing mechanism；It is provided with intermediate bulkhead 16 in the middle part of internal layer drawing mechanism, thus dividesFor upper outlet device and lower part drawing mechanism；And the outer side edges in outer region 11 are being formed after extending downwardly a distanceCylinder bottom formed mixing product outlet 20, while on cylinder side wall be arranged feed inlet 14；Reception device includes multipleConveying roller 5, around multiple conveying rollers 5 lace curtaining 6 and be arranged below lace curtaining 6 and face mix product outlet 20 air-breathingDevice 7.
Draw airflow hole 10 injection traction air-flow so that melt from spinneret orifice 9 spray after, by the draw of air-flowAnd it stretches and attenuates.
Preferably, it is evenly distributed at the spinneret unit in silk region 12, while diametrically being stayed at silk region 12The region for going out one fixed width is not provided with spinneret unit, in order to which the upper outlet dress that feeding pipeline is connected to internal layer drawing mechanism is arrangedSet with lower part drawing mechanism, in order to be persistently fed for upper outlet device and lower part drawing mechanism.It is distributed spinneret unit in this way,The transport path of the meltblown fibers of spinneret unit formation can be avoided spatially be overlapped with feeding pipeline, meltblown fibers is made to adhere toOn feeding pipeline.
Preferably, the mesh of the cylinder side wall of upper outlet device is less than the mesh of the cylinder side wall of lower part drawing mechanism.Upper outlet device can be used for adding powdery additive to meltblown fibers；Lower part drawing mechanism can be used for adding meltblown fibers shortThe additives such as fiber.
Preferably, the outer side edges in outer region 11 are more than the outer side edges of central area 13 along the segment length extended downwardlyAlong the segment length extended downwardly.It is highly preferred that the outer side edges in outer region 11 are more than center along the segment length extended downwardlyThe outer side edges in region 13 are along the segment length 5-30mm extended downwardly.It is being mixed in this way, being conducive to the additives such as staple fiberThe traction air-flow used in the air-flow and meltblown fibers forming process that use in the process, promptly spreads, and be received deviceIn getter device 7 absorption take away.
Preferably, the spinneret orifice 9 in spinneret unit is special-shaped spinneret orifice 9.More preferably, special-shaped spinneret orifice 9 be cross,Pentalpha, Y shape.The spinneret orifice 9 for selecting these shapes, can form special-shaped meltblown fibers, and be conducive to the additions such as staple fiberObject is adhered on meltblown fibers, while improving the fluffy degree of non-woven cloth.Especially when adding powdery additive, effectMore significantly.
Preferably, it is additionally provided with spiral agitator in internal layer drawing mechanism, this can prevent additive to be deposited on internal layerIn drawing mechanism.After usage, spiral agitator is opened, while being passed through air-flow, internal layer discharging dress can be effectively discharged outResidual additive in setting.
Preferably, it is in truncated cone that can select spinneret mixing arrangement on the whole, this is conducive to mix finished product exit sideJust mixing finished product output, and it is convenient for Diffusion of gas stream.
In addition, the present invention also provides a kind of processing method of melt-blow nonwoven, include the following steps：
（1）Melt prepares：High polymer slice is added in screw extruder 1 and is melted, is conveyed later by melt conveying pipelineIt is measured to metering pump 2, the melt after metering is transported to filter 3 by melt conveying pipeline and is filtered, and passes throughThe melt conveying of filtering prepares spinning to spinneret mixing arrangement 4；
（2）Spinning mixes：Melt conveying is to spinneret mixing arrangement 4, and using at the spinneret unit in silk region 12, melt is passing throughIt when spinneret orifice 9 sprays, draws and is passed through traction air-flow in airflow hole 10, and formation melt-blown is fine under the draw of traction air-flowDimension；Meanwhile a part of staple fiber feeds mixing chamber under air-flow booster action by feed inlet 14, another part staple fiber is from interiorIt is uniformly sprayed in the mesh of the lower part drawing mechanism side wall of layer drawing mechanism and enters mixing chamber, and powdery additive goes out from internal layerExpect uniformly to spray in the mesh of the upper outlet device side wall of device and enter mixing chamber, thus makes staple fiber, powdery additiveIt is obtained by uniformly mixingg with meltblown fibers and mixes finished product 8；
（3）Finished product receives：Mixing finished product 8 is exported from mixing product outlet 20, and multiple conveying rollers 5 of reception device revolve clockwiseTurn, mixing finished product 8 is received using lace curtaining 6, meanwhile, getter device 7 absorbs the air-flow come out from mixing product outlet 20, makes mixingFinished product 8 is adsorbed on lace curtaining 6, ultimately forms non-woven cloth.
The additive that the device can add can be staple fiber, superbhort fiber and powdery additive.Such as the gold of powderyBelong to powder etc..The metal powder for adding powdery, can increase the antistatic property and electric conductivity of non-woven cloth, while again can be to avoidBy metal powder be added to melt at caused by silk metal powder deposition, be unfavorable for the drawbacks of spinning.Certainly, powdery additiveIt can also be that other various functions additives for helping to improve non-woven cloth performance are not construed as limiting specific type.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than the present invention is protectedThe limitation of range is protected, although being explained in detail to the present invention with reference to preferred embodiment, those skilled in the art answerWork as understanding, technical scheme of the present invention can be modified or replaced equivalently, without departing from the reality of technical solution of the present inventionMatter and range.