CN110712405B - Heat reflection and Low-E tempered laminated glass production method and laminated glass - Google Patents
Heat reflection and Low-E tempered laminated glass production method and laminated glassDownload PDFInfo
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
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- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
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- B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
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- B32B7/10—Interconnection of layers at least one layer having inter-reactive properties
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- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/012—Tempering or quenching glass products by heat treatment, e.g. for crystallisation; Heat treatment of glass products before tempering by cooling
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/04—Tempering or quenching glass products using gas
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/04—Tempering or quenching glass products using gas
- C03B27/044—Tempering or quenching glass products using gas for flat or bent glass sheets being in a horizontal position
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
- C03C27/06—Joining glass to glass by processes other than fusing
- C03C27/10—Joining glass to glass by processes other than fusing with the aid of adhesive specially adapted for that purpose
- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching
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Abstract
Translated fromChinese
Description
Technical Field
The invention relates to the field of laminated glass production, in particular to a production method of heat reflection and Low-E toughened laminated glass and laminated glass.
Background
Low-E glass is widely applied to high-grade building curtain walls due to excellent light transmission and heat insulation. However, the difference of appearance colors is caused by the difference of production batches of the Low-E glass, and the problem of the difference of the appearance colors caused by the difference of the production batches of the Low-E glass can be solved by using the heat reflection glass as the outdoor sheet and the Low-E glass as the doubling. However, edge warping exists in the process of heat reflection and Low-E glass tempering laminating, the laminating quality is affected, and the existing technical scheme is that an edge sealing agent is coated in the laminating production process (after rolling), and the dovetail clamp is used for improving the edge sealing effect through external force extrusion.
The inconsistent of prior art heat reflection glass and Low-E glass radiance, deformation inconsistent of two glass after the tempering leads to the intermediate layer production through poor at substrate roughness, goodness of fit, adopts to beat the forked tail and presss from both sides the extruded mode of external force and promote glass and glass's clamp, and the rate of reprocessing is high, has the later stage in the use simultaneously and rebounds the risk of debonding, and extrusion position PVB can the attenuation, leads to the product perspective to warp, influences the outward appearance effect.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a production method of heat reflection and Low-E toughened laminated glass and the laminated glass, aiming at solving the deformation problem caused by the difference between the heat absorption speed of a heat reflection layer of the heat reflection glass and the heat absorption speed of a Low-E coating of the Low-E glass, and producing the laminated glass with good flatness and uniformity, wherein the technical scheme is as follows:
the invention provides a production method of heat reflection and Low-E toughened laminated glass, which comprises the following steps:
s1: cutting the heat reflection substrate glass and the Low-E substrate glass into set sizes;
s2: edging the heat reflection glass and the Low-E glass cut in the step S1, cleaning and drying;
s3: respectively toughening the heat reflection glass and the Low-E glass cleaned in the step S2, respectively heating the heat reflection glass and the Low-E glass by adopting an up-down heat convection process, and respectively toughening the heat reflection glass and the Low-E glass after reaching the same softening point temperature to obtain the toughened heat reflection glass and the toughened Low-E glass;
s4: performing edge deformation detection on the tempered Low-E glass in the step S3, and if the Low-E glass has deformation within 5mm of the edge, the deformation direction faces to a non-Low-E surface, and the deformation range is 0.05mm-0.1mm, executing a step S5;
s5, placing the tempered heat reflection glass in the step S3 and the Low-E glass meeting the deformation requirement in the step S4 in a laminating chamber, covering a bonding material between the heat reflection glass and the Low-E glass for laminating, wherein when laminating, the heat reflection surface of the heat reflection glass is arranged between the heat reflection glass and the Low-E glass, and the Low-E plating layer of the Low-E glass is far away from the heat reflection glass;
s6, pre-pressing and forming the heat reflection glass and the Low-E glass which are laminated in the step S5;
and S7, respectively putting the heat reflection glass and the Low-E glass which are pre-pressed and molded in the step S6 into a high-pressure kettle for final pressure, controlling the heat preservation temperature of the high-pressure kettle at 128-132 ℃, setting the pressure preservation range at 11.5-13bar, setting the heat preservation time range at 40-120min, and exhausting after the temperature of the high-temperature kettle is cooled to be lower than 45 ℃ to finally obtain the laminated glass.
Further, in step S3, placing the cleaned heat reflection glass and Low-E glass in a convection tempering furnace, where the convection tempering furnace includes a preheating section, a heating section, and a tempering section, the cleaned heat reflection glass and Low-E glass are placed in different preheating sections, heating sections, and tempering sections in the convection tempering furnace, and are preheated, heated, and tempered respectively, the Low-E plating layer of the Low-E glass faces upward, the heat reflection surface of the heat reflection glass faces upward, and the up-down heat convection process specifically includes:
aiming at the heat reflection glass, the upper temperature range in the preheating section is set to be 450-460 ℃, the lower temperature range in the preheating section is set to be 450-460 ℃, the upper furnace temperature range in the heating section is set to be 680-690 ℃, the upper heating power range in the heating section is set to be 70-80%, the lower furnace temperature range in the heating section is set to be 680-690 ℃, the lower heating power range in the heating section is set to be 70-80%, and the total heating time of the preheating section and the heating section is set to be 260-720 s; the swing speed ranges of the heat reflection glass in the preheating section and the heating section are set to be 50-100 mm/s, and the power ranges of the convection fans in the preheating section and the heating section are set to be 30-50%; the air pressure range in the tempering section is set to be 300pa-2500pa, the height range of an upper air nozzle of the tempering section is set to be 25mm-35mm, the height range of a lower air nozzle of the tempering section is set to be 35-45mm, and the swing speed range of the heat reflection glass in the tempering section is set to be 100mm/s-200 mm/s;
aiming at Low-E glass, the upper temperature range in the preheating section is set to be 460-470 ℃, the lower temperature range in the preheating section is set to be 450-460 ℃, the upper furnace temperature range in the heating section is set to be 680-690 ℃, the upper heating power range in the heating section is set to be 70-80%, the lower furnace temperature range in the heating section is set to be 670-680 ℃, the lower heating power range in the heating section is set to be 60-70%, and the total heating time of the preheating section and the heating section is set to be 340-720 s; the swing speed ranges of the Low-E glass in the preheating section and the heating section are set to be 50-100 mm/s, and the power ranges of convection fans in the preheating section and the heating section are set to be 50-70%; the air pressure range in the toughening section is set to be 500pa-3000pa, the height range of an upper air nozzle of the toughening section is set to be 25mm-35mm, the height range of a lower air nozzle of the toughening section is set to be 35-45mm, and the swing speed range of the Low-E glass in the toughening section is set to be 100mm/s-200 mm/s;
for Low-E glass, the upper temperature of the preheating section is higher than the lower temperature, and the upper temperature of the heating section is higher than the lower temperature; for the heat reflection glass, the upper temperature and the lower temperature of the preheating section are the same, and the upper temperature and the lower temperature of the heating section are the same.
Further, in step S4, the edge of the Low-E glass is subjected to deformation detection using a knife edge ruler and a feeler gauge, the detection method including: firstly, a knife edge ruler is placed on a Low-E surface of Low-E glass, the edge part of the knife edge ruler is flush with the edge part of the Low-E glass, and then a clearance between the edge part of the Low-E glass and the knife edge ruler is detected by using a feeler gauge.
Further, in step S2, performing an edging process using a horizontal double straight edge machine, wherein the running speed is set to 2m/min to 10 m/min; cleaning by using a cleaning machine; in step S5, the sheet combining chamber is a dust-free enclosed space, the temperature range of the sheet combining chamber is set to 22 ℃ to 28 ℃, and the humidity range is set to 18% to 28%.
Further, in step S6, the pre-press forming is specifically as follows: putting the laminated heat reflection glass and the Low-E glass into a laminating and rolling furnace, wherein a Low-E coating of the Low-E glass faces upwards, the laminating and rolling furnace comprises a plurality of roller pressing areas, the laminating and rolling furnace adopts an upper convection heating and radiation heating mode, the lower part adopts a radiation heating mode, the temperature range of the roller pressing areas is set to be 150-240 ℃, the moving speed range of the heat reflection glass and the Low-E glass is set to be 1.8-3.5 m/min, the heat reflection glass and the Low-E glass are moved out within a preset time threshold range, and the discharging temperature is controlled to be 55-75 ℃.
Further, in step S6, the nip roll furnace includes a first roll nip, a second roll nip, and a third roll nip, the temperature range of the first roll nip is set to 150 ℃ to 180 ℃, the temperature range of the second roll nip is set to 180 ℃ to 220 ℃, and the temperature range of the third roll nip is set to 200 ℃ to 240 ℃.
Further, in step S5, the adhesive material is a PVB film, and in step S7, the heat-reflecting glass and the Low-E glass after the pre-press molding are kept in the autoclave for 40-60 min.
Further, in step S5, the bonding material is SGP film, and in step S7, the heat-reflecting glass and the Low-E glass after pre-pressing molding are kept in the autoclave for 100-120 min.
Further, the thickness ranges of the heat reflection glass and the Low-E glass are set to be 5mm, 6mm, 8mm, 10mm and 12mm, respectively.
The invention also provides laminated glass obtained by the production method, wherein the laminated glass comprises heat reflection glass, Low-E glass and a bonding material coated between the heat reflection glass and the Low-E glass, a heat reflection layer of the heat reflection glass is arranged between the heat reflection glass and the Low-E glass, and a Low-E coating of the Low-E glass is far away from the heat reflection glass; the adhesive material is a PVB film or an SGP film.
The technical scheme provided by the invention has the following beneficial effects:
a. according to the production method of the heat reflection and Low-E tempered laminated glass, an up-and-down heat convection process is adopted, and the size of convection is adjusted through the cooperation of a convection fan and a heating device, so that the problem of deformation caused by different heat absorption speeds of a heat reflection layer of the heat reflection glass and a Low-E coating of the Low-E tempered glass is solved, the deformation is small after tempering, the flatness is high, and the appearance imaging quality is good;
b. according to the production method of the heat reflection and Low-E toughened laminated glass, the edge sealing agent does not need to be coated in the laminating production operation, the dovetail clip is made, and the product cannot deform due to extrusion force of the dovetail clip;
c. according to the production method of the heat reflection and Low-E toughened laminated glass, the laminated yield is improved, the product quality is ensured, and the service life is prolonged; the number of repaired products is greatly reduced, and the production efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a side view of a heat reflective and Low-E tempered laminated glass provided in accordance with an embodiment of the present invention;
FIG. 2 is a side view of a knife edge rule and a feeler gauge provided by an embodiment of the present invention;
fig. 3 is a flowchart of a method for producing a Low-E tempered laminated glass according to an embodiment of the present invention.
Wherein the reference numerals include: 1-heat reflection glass, 2-Low-E glass, 3-bonding material, 4-heat reflection layer, 5-Low-E coating, 6-knife edge ruler and 7-feeler gauge.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or device that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or device.
The heat reflection glass is also called as solar control coated glass, one or more layers of metal or metal oxide thin films are coated on the surface of the glass, the film is a heat reflection layer, the Low-E glass comprises an online Low-E layer and an offline Low-E layer, and the offline Low-E layer comprises a single-silver Low-E layer, a double-silver Low-E layer and a triple-silver Low-E layer.
In one embodiment of the invention, the thickness ranges of the heat reflective glass and the Low-E glass are set to be 5mm, 6mm, 8mm, 10mm and 12mm, respectively.
In an embodiment of the present invention, a method for producing a heat reflective and Low-E tempered laminated glass is provided, and the specific structure is shown in fig. 3, which includes the following steps:
s1: cutting the heat reflection substrate glass and the Low-E substrate glass into set sizes;
s2: edging the heat reflection glass and the Low-E glass cut in the step S1, cleaning and drying, edging by using a horizontal double-straight edge machine, and setting the running speed to be 2-10 m/min; cleaning by using a cleaning machine;
s3: respectively tempering the heat reflection glass and the Low-E glass cleaned in the step S2, respectively heating the heat reflection glass and the Low-E glass by adopting an upper and lower heat convection process, and respectively tempering the heat reflection glass and the Low-E glass after reaching the same softening point temperature (the softening temperature is the same, if the softening temperature is different, the heat reflection glass and the Low-E glass are not consistent in deformation, and bubbles are generated after the two pieces of glass are glued together), so as to obtain the tempered heat reflection glass and the Low-E glass; placing the cleaned heat reflection glass and the cleaned Low-E glass in a convection tempering furnace, wherein the convection tempering furnace comprises a preheating section, a heating section and a tempering section, the cleaned heat reflection glass and the cleaned Low-E glass are placed in different preheating sections, heating sections and tempering sections in the convection tempering furnace, and are respectively preheated, heated and tempered, a Low-E coating of the Low-E glass faces upwards, a heat reflection layer of the heat reflection glass faces upwards, and the up-and-down heat convection process specifically comprises the following steps:
aiming at the heat reflection glass, the upper temperature range in the preheating section is set to be 450-460 ℃, the lower temperature range in the preheating section is set to be 450-460 ℃, the upper furnace temperature range in the heating section is set to be 680-690 ℃, the upper heating power range in the heating section is set to be 70-80%, the lower furnace temperature range in the heating section is set to be 680-690 ℃, the lower heating power range in the heating section is set to be 70-80%, and the total heating time of the preheating section and the heating section is set to be 260-720 s; the swing speed ranges of the heat reflection glass in the preheating section and the heating section are set to be 50-100 mm/s, and the power ranges of the convection fans in the preheating section and the heating section are set to be 30-50%; the air pressure range in the tempering section is set to be 300pa-2500pa, the height range of an upper air nozzle of the tempering section is set to be 25mm-35mm, the height range of a lower air nozzle of the tempering section is set to be 35-45mm, and the swing speed range of the heat reflection glass in the tempering section is set to be 100mm/s-200 mm/s;
aiming at Low-E glass, the upper temperature range in the preheating section is set to be 460-470 ℃, the lower temperature range in the preheating section is set to be 450-460 ℃, the upper furnace temperature range in the heating section is set to be 680-690 ℃, the upper heating power range in the heating section is set to be 70-80%, the lower furnace temperature range in the heating section is set to be 670-680 ℃, the lower heating power range in the heating section is set to be 60-70%, and the total heating time of the preheating section and the heating section is set to be 340-720 s; the swing speed ranges of the Low-E glass in the preheating section and the heating section are set to be 50-100 mm/s, and the power ranges of convection fans in the preheating section and the heating section are set to be 50-70%; the air pressure range sets up 500pa-3000pa in the tempering section, the high range of tuyere sets up 25mm-35mm on the tempering section, the high range of tuyere sets up 35-45mm under the tempering section, the swing speed range of Low-E glass in the tempering section sets up 100mm/s-200 mm/s.
For Low-E glass, the upper temperature of the preheating section is higher than the lower temperature, and the upper temperature of the heating section is higher than the lower temperature; through the adjustment of the convection fan and the heating furnace temperature, the Low-E glass edge part has slight deformation towards a non-Low-E coating within the range of 5mm, the heat reflection glass edge part does not deform, and the two surfaces of the Low-E glass have different heat absorption rates, so that the glass edge part deforms; if the upper wind speed and the lower wind speed are the same, the Low-E glass has larger deformation; and the deformation of the Low-E glass is relatively small by setting the upper part to have high wind speed and the lower part to have Low wind speed.
For the heat reflection glass, the upper temperature and the lower temperature of the preheating section are the same, and the upper temperature and the lower temperature of the heating section are the same; the heat reflection glass can ensure that the heating rates of two surfaces are as high as those of two surfaces through convection heating, and the edge part is not deformed; if the upper temperature is different from the lower temperature, the heat reflection glass absorbs heat differently, and the edge part is easy to deform.
The preheating section and the heating section respectively comprise a heating device and a convection fan, the heating device is preferably a heating wire, a plurality of heating wires are distributed in front of the fan, each heating wire is 3000W, the heating wires are used for providing heat, and the convection fan is used for transmitting the heat generated by the heating wires to the glass, so that the glass is heated uniformly. The preheating and heating purposes are as follows: on one hand, the tempering efficiency is improved, on the other hand, the glass is heated at a low temperature, and if the glass is directly heated at a high temperature, the deformation of the glass is not easy to control. When the temperature of the preheating section and the heating section and the moving speed of the glass are set, the controller automatically adjusts the rotating speed and the heating temperature of the fan according to the temperature, and the heat generated by the heating wires is uniformly dissipated to the heated glass through the convection fan.
S4: performing edge deformation detection on the tempered Low-E glass in the step S3, if the Low-E glass has deformation (the deformation is two-edge tilting) within the range of 5mm of the edge, the deformation direction (the tilting direction) faces to a non-Low-E coating, and the deformation range is 0.05mm-0.1mm, executing the step S5, and if not, indicating that the edge of the tempered Low-E glass is unqualified in deformation; theedge ruler 6 and the plug ruler 7 (the edge ruler and the plug ruler are tools for inspecting the waveform of the toughened glass in national standard) are used for deformation detection of the edge of the Low-E glass, and the detailed detection method is as shown in figure 2: firstly, aknife edge ruler 6 is placed on a Low-E coating of Low-E glass, the edge part of the knife edge ruler is flush with the edge part of the Low-E glass, the placing direction of the knife edge ruler is consistent with the discharging direction of the Low-E glass after tempering, then a clearance between the edge part of the Low-E glass and the knife edge ruler is detected by using aclearance gauge 7, the position with the largest clearance is the largest deformation of the edge part of the glass, and the range of the clearance is 0.05mm-0.1 mm; the thickness range of the feeler gauge is 0.01mm-0.30mm, and the thickness of the feeler gauge is gradually increased by 0.01mm in the middle.
S5, placing the tempered heat reflection glass in the step S3 and the Low-E glass meeting the deformation requirement in the step S4 in a laminating chamber, covering a bonding material between the heat reflection glass and the Low-E glass for laminating, wherein the bonding material is a PVB film or an SGP film, when laminating, a heat reflection layer of the heat reflection glass is arranged between the heat reflection glass and the Low-E glass, and a Low-E plating layer of the Low-E glass is far away from the heat reflection glass; the sheet combining chamber is a dust-free closed space, the temperature range of the sheet combining chamber is set to be 22-28 ℃, and the humidity range is set to be 18-28%.
S6, pre-pressing the heat reflection glass and the Low-E glass which are laminated in the step S5, wherein the pre-pressing is as follows: the laminated heat reflection glass and the Low-E glass are placed into a laminating and rolling furnace, a Low-E coating of the Low-E glass faces upwards, the laminating and rolling furnace comprises a plurality of roller press areas, the laminating and rolling furnace adopts an upper convection heating mode and a radiation heating mode, the lower part adopts a radiation heating mode (the upper part is above the Low-E coating of the Low-E glass, and the lower part is below the Low-E coating in a relative mode), and the convection heating is realized by blowing hot air to the surface of the glass through a convection fan, so that the upper space of the glass forms gas convection to compensate the radiation efficiency. The temperature range of the roller nip is set to be 150-240 ℃, the moving speed range of the heat reflection glass and the Low-E glass is set to be 1.8-3.5 m/min, the heat reflection glass and the Low-E glass are moved out within a preset time threshold range, and the tapping temperature is controlled to be 55-75 ℃. The laminated rubber roll pressing furnace comprises a first roll pressing area, a second roll pressing area and a third roll pressing area, wherein the temperature range of the first roll pressing area is set to be 150-180 ℃, the temperature range of the second roll pressing area is set to be 180-220 ℃, and the temperature range of the third roll pressing area is set to be 200-240 ℃. The roller wheel adopts the convection heating mode during doubling, can make PVB bonding material and glass better bond together, and can not appear the bubble after the doubling is accomplished, split gluey scheduling problem. When the glass is rolled, the Low-E surface faces upwards, the radiation efficiency is reduced due to the simple radiation heating, the glass and the bonding material cannot be completely bonded, and the rolling effect is poor; and increasing convection heating to compensate for radiation efficiency can solve this problem.
And S7, respectively putting the heat reflection glass and the Low-E glass which are pre-pressed and molded in the step S6 into a high-pressure kettle for final pressure, controlling the heat preservation temperature of the high-pressure kettle at 128-132 ℃, setting the pressure preservation range at 11.5-13bar, setting the heat preservation time range at 40-120min, and exhausting after the temperature of the high-temperature kettle is cooled to be lower than 45 ℃ to finally obtain the laminated glass. Because the SGP film and the PVB film have different structures, when the bonding material is the PVB film, the heat-reflecting glass and the Low-E glass after pre-pressing forming are kept in the high-pressure kettle for 40-60 min; and when the bonding material is the SGP film, the heat-reflecting glass and the Low-E glass subjected to pre-pressing forming are subjected to heat preservation in the high-pressure kettle for 100-120 min.
The convection fan and the heating device are adjusted to adjust the size of convection, so that the Low-E glass edge part slightly deforms towards the non-Low-E coating within the range of 5mm, the deformation range is 0.05mm-0.1mm, and meanwhile, the heat reflection glass edge part does not deform; adjusting the convection (the convection refers to the power of a convection fan) according to the deformation of the edge of the glass to ensure that the deformation of the edge is 0.05-0.1 mm; when the doubling is prepared, the Low-E glass and the edge of the heat reflection glass can be better attached, the problems of air bubbles, glue failure and the like do not occur on the edge of the glass after the doubling, and the yield is high after the doubling.
The invention also provides laminated glass, which is obtained according to the production method shown in the figure 1, and comprisesheat reflecting glass 1, Low-E glass 2 and abonding material 3 coated between theheat reflecting glass 1 and the Low-E glass 2, wherein aheat reflecting layer 4 of theheat reflecting glass 1 is arranged between theheat reflecting glass 1 and the Low-E glass 2, and a Low-E coating 5 of the Low-E glass 2 is far away from theheat reflecting glass 1; the adhesive material is a PVB film or an SGP film.
The laminated glass prepared by the generation method provided by the invention is compared with the laminated glass prepared by the traditional generation method in performance test, and the test data of the performances of the laminated glass prepared by the two generation methods are compared in table 1.
TABLE 1 comparison of performance test data for laminated glass prepared by two preparation processes
The specific test standard refers to GB 15763.3-2009 third part of safety glass for buildings: laminated glass, as can be seen from the above table, laminated glass prepared by the production method provided by the present invention does not cause problems such as bubbles and debonding after the completion of the laminating process, and has improved heat resistance.
Example 1
Selecting 6mm heat reflection large-plate substrate glass and 6mm double-silver Low-E large-plate substrate glass to prepare laminated glass, wherein the specific production method comprises the following steps:
s1: cutting 6mm heat reflection substrate glass and 6mm double-silver Low-E substrate glass into set sizes to obtain a heat reflection and double-silver Low-E substrate;
s2: edging the heat reflection glass and the Low-E glass cut in the step S1, cleaning and drying;
s3: respectively and uniformly heating the heat reflection and double-silver Low-E glass cleaned in the step two to the softening point temperature of the glass in a convection tempering furnace, and rapidly and uniformly cooling to obtain the heat reflection tempered glass and the double-silver Low-E tempered glass,
for the heat reflection glass, the temperature of the upper part in the preheating section is 450 ℃, and the temperature of the lower part in the preheating section is 450 ℃; the furnace temperature of the upper part in the heating section is 680 ℃, the furnace temperature of the lower part in the heating section is 680 ℃, the heating power of the upper part in the heating section is set to be 60 percent, and the heating power of the lower part in the heating section is set to be 60 percent; the power of the upper convection fans in the preheating section and the heating section is set to be 40%, the power of the lower convection fans in the preheating section and the heating section is set to be 40%, the swinging speed of the heat reflection glass in the preheating section and the heating section is 100mm/s, and the total heating time of the heat reflection glass in the preheating section and the heating section is set to be 320 s; the air pressure of the tempering section is 1800pa, the height of an upper air nozzle of the tempering section is 35mm, the height of a lower air nozzle of the tempering section is 35mm, and the swinging speed of the heat reflection glass in the tempering section is 100 mm/s;
for double-silver Low-E glass, the temperature of the upper part in the preheating section is 460 ℃, the temperature of the lower part in the preheating section is 450 ℃, the temperature of the furnace at the upper part in the heating section is 690 ℃, the temperature of the furnace at the lower part in the heating section is 675 ℃, the heating power of the upper part in the heating section is 80%, and the heating power of the lower part in the heating section is 70%; the power of the convection fans at the upper parts in the preheating section and the heating section is set to be 70%, and the power of the convection fans at the lower parts in the preheating section and the heating section is set to be 40%; the swinging speed of the heat reflection glass in the preheating section and the heating section is 100mm/s, and the total heating time of the heat reflection glass in the preheating section and the heating section is set to be 460 s; the air pressure of the toughening section is 2500pa, the height of the upper air nozzle of the toughening section is 30mm, the height of the lower air nozzle of the toughening section is 40mm, the swing speed of the double-silver Low-E glass in the toughening section is 100mm/s, and the edge deformation of the obtained double-silver Low-E toughened glass is 0.1 mm.
S4: performing edge deformation detection on the tempered Low-E glass in the step S3, and if the Low-E glass has deformation within 5mm of the edge, the deformation direction faces to a non-Low-E coating, and the deformation range is 0.05mm-0.1mm, executing a step S5;
s5, placing the tempered heat reflection glass in the step S3 and the Low-E glass meeting the deformation requirement in the step S4 in a laminating chamber, and covering a PVB film between the heat reflection glass and the Low-E glass for laminating, wherein when laminating, a heat reflection layer of the heat reflection glass is arranged between the heat reflection glass and the Low-E glass, and a Low-E plating layer of the Low-E glass is far away from the heat reflection glass; the sheet combining chamber is a dust-free closed space, the temperature range of the sheet combining chamber is set to be 24 ℃, and the humidity range is set to be 22%;
s6, pre-pressing and forming the heat reflection glass and the Low-E glass after sheet combination in the step S5, wherein the temperature range of the roller nip is set to be 150-240 ℃, the temperature of the first roller nip is 180 ℃, the temperature of the second roller nip is 210 ℃, the temperature range of the third roller nip is 210 ℃, the moving speed range of the heat reflection glass and the Low-E glass is set to be 2.3m/min, the heat reflection glass and the Low-E glass are moved out within a preset time threshold range, and the discharging temperature is 65 ℃.
And S7, respectively putting the heat reflection glass and the Low-E glass which are pre-pressed and molded in the step S6 into a high-pressure kettle for final pressure, controlling the heat preservation temperature of the high-pressure kettle to be 128 ℃, setting the pressure preservation range to be 12bar, setting the heat preservation time range to be 60min, and exhausting after the temperature of the high-temperature kettle is cooled to be lower than 45 ℃ to finally obtain the laminated glass.
Example 2
Selecting 8mm heat reflection large-plate substrate glass and 8mm double-silver Low-E large-plate substrate glass to prepare laminated glass, wherein the specific production method comprises the following steps:
s1: cutting 6mm heat reflection substrate glass and 6mm double-silver Low-E substrate glass into set sizes to obtain a heat reflection and double-silver Low-E substrate;
s2: edging the heat-reflecting glass and the Low-E glass cut in the step S1, cleaning and drying, wherein the used synchronous belt is a soft belt, and the running speed of an edging machine is 5 m/min;
s3: respectively and uniformly heating the heat reflection and double-silver Low-E glass cleaned in the step two to the softening point temperature of the glass in a convection tempering furnace, and rapidly and uniformly cooling to obtain the heat reflection tempered glass and the double-silver Low-E tempered glass,
for the heat reflection glass, the temperature of the upper part in the preheating section is 450 ℃, and the temperature of the lower part in the preheating section is 450 ℃; the furnace temperature of the upper part in the heating section is 680 ℃, the furnace temperature of the lower part in the heating section is 680 ℃, the heating power of the upper part in the heating section is set to be 60 percent, and the heating power of the lower part in the heating section is set to be 60 percent; the power of the upper convection fans in the preheating section and the heating section is set to be 40%, the power of the lower convection fans in the preheating section and the heating section is set to be 40%, the swinging speed of the heat reflection glass in the preheating section and the heating section is 100mm/s, and the total heating time of the heat reflection glass in the preheating section and the heating section is set to be 430 s; the air pressure of the tempering section is 1000pa, the height of an upper air nozzle of the tempering section is 35mm, the height of a lower air nozzle of the tempering section is 35mm, and the swinging speed of the heat reflection glass in the tempering section is 100 mm/s;
for double-silver Low-E glass, the temperature of the upper part in the preheating section is 460 ℃, the temperature of the lower part in the preheating section is 450 ℃, the temperature of the furnace at the upper part in the heating section is 690 ℃, the temperature of the furnace at the lower part in the heating section is 675 ℃, the heating power of the upper part in the heating section is 80%, and the heating power of the lower part in the heating section is 70%; the power of the convection fans at the upper parts in the preheating section and the heating section is set to be 70%, and the power of the convection fans at the lower parts in the preheating section and the heating section is set to be 40%; the swinging speed of the heat reflection glass in the preheating section and the heating section is 100mm/s, and the total heating time of the heat reflection glass in the preheating section and the heating section is set to be 540 s; the air pressure of the toughening section is 1800pa, the height of an upper air nozzle of the toughening section is 30mm, the height of a lower air nozzle of the toughening section is 40mm, the swing speed of the double-silver Low-E glass in the toughening section is 100mm/s, and the edge deformation of the obtained double-silver Low-E toughened glass is 0.06 mm;
s4: performing edge deformation detection on the tempered Low-E glass in the step S3, and if the Low-E glass has deformation within 5mm of the edge, the deformation direction faces to a non-Low-E coating, and the deformation range is 0.05mm-0.1mm, executing a step S5;
s5, placing the tempered heat reflection glass in the step S3 and the Low-E glass meeting the deformation requirement in the step S4 in a laminating chamber, covering an SGP film between the heat reflection glass and the Low-E glass for laminating, wherein when laminating, a heat reflection layer of the heat reflection glass is arranged between the heat reflection glass and the Low-E glass, and a Low-E plating layer of the Low-E glass is far away from the heat reflection glass; the sheet combining chamber is a dust-free closed space, the temperature range of the sheet combining chamber is set to be 24 ℃, and the humidity range is set to be 22%;
s6, pre-pressing the heat reflection glass and the Low-E glass which are laminated in the step S5 to form, wherein the temperature of the first roll nip is 150 ℃, the temperature of the second roll nip is 180 ℃, the temperature range of the third roll nip is 210 ℃, the moving speed range of the heat reflection glass and the Low-E glass is 1.8m/min, the heat reflection glass and the Low-E glass are moved out within a preset time threshold range, and the discharging temperature is 60 ℃.
And S7, respectively putting the heat reflection glass and the Low-E glass which are pre-pressed and molded in the step S6 into a high-pressure kettle for final pressure, controlling the heat preservation temperature of the high-pressure kettle at 132 ℃, setting the pressure preservation range at 12bar, setting the heat preservation time range at 100min, and exhausting after the temperature of the high-temperature kettle is cooled to be lower than 45 ℃ to finally obtain the laminated glass.
The emissivity of the heat reflecting glass and the emissivity of the Low-E glass are lower than that of the common white glass, and the heat reflecting layer of the heat reflecting glass and the Low-E coating of the Low-E glass absorb heat slowly compared with the surface of the common white glass, so that the glass is deformed due to the fact that the upper surface and the lower surface of the glass absorb heat differently and quickly in the tempering and heating processes. Meanwhile, the emissivity of the heat reflection glass is different from that of the online Low-E glass, and the deformation inevitably generated during heating of the toughening furnace is also different. The deformation problem caused by different heat absorption speeds of the heat reflection layer and the Low-E coating can be solved by simultaneously adjusting the size of convection through the convection tempering furnace by utilizing a convection heating mode.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The production method of the heat reflection and Low-E toughened laminated glass is characterized by comprising the following steps of:
s1: cutting the heat reflection substrate glass and the Low-E substrate glass into set sizes;
s2: edging the heat reflection glass and the Low-E glass cut in the step S1, cleaning and drying;
s3: respectively toughening the heat reflection glass and the Low-E glass cleaned in the step S2, respectively heating the heat reflection glass and the Low-E glass by adopting an up-down heat convection process, and respectively toughening the heat reflection glass and the Low-E glass after reaching the same softening point temperature to obtain the toughened heat reflection glass and the toughened Low-E glass;
s4: performing edge deformation detection on the tempered Low-E glass in the step S3, and if the Low-E glass has deformation within 5mm of the edge, the deformation direction faces to a non-Low-E surface, and the deformation range is 0.05mm-0.1mm, executing a step S5;
s5, placing the tempered heat reflection glass in the step S3 and the Low-E glass meeting the deformation requirement in the step S4 in a laminating chamber, covering a bonding material between the heat reflection glass and the Low-E glass for laminating, wherein when laminating, the heat reflection surface of the heat reflection glass is arranged between the heat reflection glass and the Low-E glass, and the Low-E plating layer of the Low-E glass is far away from the heat reflection glass;
s6, pre-pressing and forming the heat reflection glass and the Low-E glass which are laminated in the step S5;
and S7, respectively putting the heat reflection glass and the Low-E glass which are pre-pressed and molded in the step S6 into a high-pressure kettle for final pressure, controlling the heat preservation temperature of the high-pressure kettle at 128-132 ℃, setting the pressure preservation range at 11.5-13bar, setting the heat preservation time range at 40-120min, and exhausting after the temperature of the high-temperature kettle is cooled to be lower than 45 ℃ to finally obtain the laminated glass.
2. The method for producing a heat-reflective and Low-E tempered laminated glass according to claim 1, wherein in step S3, the cleaned heat-reflective glass and Low-E glass are placed in a convection tempering furnace, the convection tempering furnace comprises a preheating section, a heating section and a tempering section, the cleaned heat-reflective glass and Low-E glass are placed in different preheating sections, heating sections and tempering sections of the convection tempering furnace, and are preheated, heated and tempered respectively, the Low-E plating layer of the Low-E glass faces upwards, the heat-reflective surface of the heat-reflective glass faces upwards, and the up-and-down heat convection process is as follows:
aiming at the heat reflection glass, the upper temperature range in the preheating section is set to be 450-460 ℃, the lower temperature range in the preheating section is set to be 450-460 ℃, the upper furnace temperature range in the heating section is set to be 680-690 ℃, the upper heating power range in the heating section is set to be 70-80%, the lower furnace temperature range in the heating section is set to be 680-690 ℃, the lower heating power range in the heating section is set to be 70-80%, and the total heating time of the preheating section and the heating section is set to be 260-720 s; the swing speed ranges of the heat reflection glass in the preheating section and the heating section are set to be 50-100 mm/s, and the power ranges of the convection fans in the preheating section and the heating section are set to be 30-50%; the air pressure range in the tempering section is set to be 300P a-2500P a, the height range of an upper air nozzle of the tempering section is set to be 25mm-35mm, the height range of a lower air nozzle of the tempering section is set to be 35-45mm, and the swing speed range of the heat reflection glass in the tempering section is set to be 100mm/s-200 mm/s;
aiming at Low-E glass, the upper temperature range in the preheating section is set to be 460-470 ℃, the lower temperature range in the preheating section is set to be 450-460 ℃, the upper furnace temperature range in the heating section is set to be 680-690 ℃, the upper heating power range in the heating section is set to be 70-80%, the lower furnace temperature range in the heating section is set to be 670-680 ℃, the lower heating power range in the heating section is set to be 60-70%, and the total heating time of the preheating section and the heating section is set to be 340-720 s; the swing speed ranges of the Low-E glass in the preheating section and the heating section are set to be 50-100 mm/s, and the power ranges of convection fans in the preheating section and the heating section are set to be 50-70%; the air pressure range in the tempering section is set to be 500P a-3000P a, the height range of an upper air nozzle of the tempering section is set to be 25mm-35mm, the height range of a lower air nozzle of the tempering section is set to be 35-45mm, and the swing speed range of the Low-E glass in the tempering section is set to be 100mm/s-200 mm/s;
for Low-E glass, the upper temperature of the preheating section is higher than the lower temperature, and the upper temperature of the heating section is higher than the lower temperature; for the heat reflection glass, the upper temperature and the lower temperature of the preheating section are the same, and the upper temperature and the lower temperature of the heating section are the same.
3. The method for producing a heat-reflective and Low-E tempered laminated glass according to claim 1, wherein in step S4, the edge of the Low-E glass is detected by deformation using a knife edge ruler and a feeler gauge, and the detection method comprises: firstly, a knife edge ruler is placed on a Low-E surface of Low-E glass, the edge part of the knife edge ruler is flush with the edge part of the Low-E glass, and then a clearance between the edge part of the Low-E glass and the knife edge ruler is detected by using a feeler gauge.
4. The method for producing a heat reflective and Low-E tempered laminated glass according to claim 1, wherein in step S2, a horizontal double straight edge machine is used to perform edging, and the running speed thereof is set to 2m/min to 10 m/min; cleaning by using a cleaning machine; in step S5, the sheet combining chamber is a dust-free enclosed space, the temperature range of the sheet combining chamber is set to 22 ℃ to 28 ℃, and the humidity range is set to 18% to 28%.
5. The method for producing a heat reflective and Low-E tempered laminated glass according to claim 1, wherein in step S6, the pre-pressing is as follows: putting the laminated heat reflection glass and the Low-E glass into a laminating and rolling furnace, wherein a Low-E coating of the Low-E glass faces upwards, the laminating and rolling furnace comprises a plurality of roller pressing areas, the laminating and rolling furnace adopts an upper convection heating and radiation heating mode, the lower part adopts a radiation heating mode, the temperature range of the roller pressing areas is set to be 150-240 ℃, the moving speed range of the heat reflection glass and the Low-E glass is set to be 1.8-3.5 m/min, the heat reflection glass and the Low-E glass are moved out within a preset time threshold range, and the discharging temperature is controlled to be 55-75 ℃.
6. The method for producing a heat-reflective and Low-E tempered laminated glass according to claim 5, wherein the laminating furnace comprises a first roll nip, a second roll nip and a third roll nip, the temperature of the first roll nip is set to be in the range of 150 ℃ to 180 ℃, the temperature of the second roll nip is set to be in the range of 180 ℃ to 220 ℃, and the temperature of the third roll nip is set to be in the range of 200 ℃ to 240 ℃, in step S6.
7. The method for producing a heat reflective and Low-E tempered laminated glass according to claim 1, wherein in step S5, the bonding material is a PVB film, and in step S7, the heat reflective glass and the Low-E glass after pre-press forming are kept in the autoclave for 40-60 min.
8. The method for producing a heat reflective and Low-E tempered laminated glass as claimed in claim 1, wherein in step S5, the bonding material is SGP film, and in step S7, the temperature of the pre-pressed heat reflective glass and the Low-E glass in the autoclave is set to 100-120 min.
9. The production method of the heat reflecting and Low-E tempered laminated glass as claimed in claim 1, wherein the thickness ranges of the heat reflecting glass and the Low-E tempered laminated glass are set to be 5mm, 6mm, 8mm, 10mm and 12mm respectively.
10. Laminated glass, characterized in that it is obtained according to the production method of any one of claims 1 to 9, and comprises a heat-reflecting glass (1), a Low-E glass (2) and a bonding material (3) coated between the heat-reflecting glass (1) and the Low-E glass (2), wherein the heat-reflecting layer (4) of the heat-reflecting glass (1) is arranged between the heat-reflecting glass (1) and the Low-E glass (2), and the Low-E coating (5) of the Low-E glass (2) is far away from the heat-reflecting glass (1); the adhesive material (3) is a PVB film or an SGP film.
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| CN113059886B (en)* | 2021-04-16 | 2022-03-25 | 浙江南晶玻璃科技股份有限公司 | Preparation process of tempered heat-reflection coated laminated glass |
| CN114193860B (en)* | 2021-12-16 | 2022-12-16 | 江苏上玻玻璃有限公司 | Processing technology of Low-E laminated glass |
| CN115871317A (en)* | 2022-12-30 | 2023-03-31 | 惠州市万合玻璃科技有限公司 | A method for manufacturing heat-reflecting double-steel laminated glass |
| CN116354594B (en)* | 2023-04-03 | 2024-03-19 | 青岛锦绣前程节能玻璃有限公司 | Production equipment of low-temperature radiation glass and tempering treatment process thereof |
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