CN210706399U - Composite window film - Google Patents
Composite window film Download PDFInfo
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- CN210706399U CN210706399U CN201921763497.7U CN201921763497U CN210706399U CN 210706399 U CN210706399 U CN 210706399U CN 201921763497 U CN201921763497 U CN 201921763497U CN 210706399 U CN210706399 U CN 210706399U
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- layer
- window film
- composite window
- transparent protective
- protective layer
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- 239000002131 composite material Substances 0.000 title claims abstract description 48
- 239000010410 layer Substances 0.000 claims description 67
- 239000011241 protective layer Substances 0.000 claims description 34
- 239000002033 PVDF binder Substances 0.000 claims description 17
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 17
- 239000011527 polyurethane coating Substances 0.000 claims description 10
- 238000002834 transmittance Methods 0.000 claims description 4
- 230000004888 barrier function Effects 0.000 abstract description 3
- 238000013329 compounding Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- UVTXHAOLTBFLDL-UHFFFAOYSA-N 4-[(4-carboxyphenyl)-phenylphosphoryl]benzoic acid Chemical compound C1=CC(C(=O)O)=CC=C1P(=O)(C=1C=CC(=CC=1)C(O)=O)C1=CC=CC=C1 UVTXHAOLTBFLDL-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-N benzene-dicarboxylic acid Natural products OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- -1 poly terephthalic acid 1, 4-cyclohexane dimethanol ester Chemical class 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001123 polycyclohexylenedimethylene terephthalate Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004347 surface barrier Methods 0.000 description 1
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Abstract
According to the scheme, the composite window film has the characteristics of high barrier property, puncture resistance, flame retardance and high temperature resistance through the compounding of all the layers, so that the performance of the composite window film is greatly optimized. In addition, the total thickness of the composite window film is limited, so that the composite window film has good flexibility, and the application range of the composite window film is widened.
Description
Technical Field
The disclosure relates to the field of films, and particularly relates to a composite window film.
Background
Along with the trend of energy conservation and environmental protection in recent years, the demand of industries such as buildings, automobiles, safety and the like on glass window films is increasing, the window films can effectively block ultraviolet rays and infrared rays, the harm of harmful radiation of sunlight is greatly reduced, and the effects of protection and heat insulation are achieved.
The polyester film has excellent physical and chemical properties, is thin in thickness, high in transparency, good in temperature resistance and not easy to yellow, is an ideal material for manufacturing the window film, the traditional PET-based window film only has basic ultraviolet-proof and infrared-proof functions, the defects of low barrier property on the surface of the film, general temperature resistance, no flame-retardant effect, low bottom surface adsorption force and the like are not overcome, and the more comprehensive use requirements cannot be met.
SUMMERY OF THE UTILITY MODEL
The disclosure provides a composite window film, which aims at the technical problem of low surface barrier property of the window film in the prior art.
Some embodiments of the present disclosure provide a composite window film including a polyurethane coating layer, a corona layer, a PCT layer, a PA layer, and a PVDF layer, which are sequentially disposed from bottom to top, wherein the total thickness of the composite window film is 35.6 μm to 48.7 μm.
According to the scheme, the composite window film has the characteristics of high barrier property, puncture resistance, flame retardance and high temperature resistance through the compounding of all the layers, so that the performance of the composite window film is greatly optimized. In addition, the total thickness of the composite window film is limited, so that the composite window film has good flexibility, and the application range of the composite window film is widened.
Preferably, the polyurethane coating layer has a visible light transmittance of more than 80%.
The performance of the composite window film is optimized.
Preferably, the corona layer has a thickness of 0.1 μm to 0.2 μm.
The thickness of the corona layer is reasonably selected, and the performance of the composite window film is optimized.
Preferably, the thickness of the PCT layer is 20 μm to 25 μm.
The thickness of the PCT layer is reasonable, and the performance of the composite window film is optimized.
Preferably, the PVDF layer has a visible light transmittance of greater than 78%.
The scheme greatly optimizes the performance of the PVDF layer, and further optimizes the performance of the composite window film.
Preferably, the PA layer has a thickness of 10 μm to 15 μm.
The PA layer has reasonable thickness, and the performance of the composite window film is optimized.
Preferably, the PVDF layer has a thickness of 5 to 7.5 μm.
The thickness of the PVDF layer is reasonable, and the performance of the composite window film is optimized.
Preferably, the composite window film further comprises a first transparent protective layer, the first transparent protective layer is adhered to one side, far away from the corona layer, of the polyurethane coating layer, and the second transparent protective layer is adhered to one side, far away from the PA layer, of the PVDF layer.
The arrangement of the first transparent protective layer and the second transparent protective layer mainly plays a role in protection, and the service life of the composite window film is prolonged.
Preferably, the first transparent protective layer and the second transparent protective layer have the same thickness.
The first transparent protective layer and the second transparent protective layer are easy to process.
The first transparent protective layer and the second transparent protective layer are respectively provided with a salient point for improving the puncture resistance of the first transparent protective layer and the second transparent protective layer, and the shape of the salient point is hemispherical.
Due to the arrangement of the salient points, the puncture resistance of the first transparent protective layer and the second transparent protective layer is optimized, and the performance of the composite window film is further optimized.
Drawings
The following drawings are merely exemplary, not all drawings of the disclosed embodiments, and other drawings may be obtained by those skilled in the art in light of the disclosed embodiments.
Fig. 1 is a schematic diagram of an embodiment of the present disclosure.
Detailed Description
The present disclosure is further described below with reference to the accompanying drawings, and the following embodiments are merely exemplary and are not all embodiments of the technical solutions of the present disclosure.
In a first aspect, as shown in fig. 1, some embodiments of the present disclosure provide a composite window film comprising a polyurethane coating layer 1, a corona layer 2, a PCT layer 3, a PA layer 4, and a PVDF layer 5, which are sequentially disposed from bottom to top, wherein the total thickness of the composite window film is 35.6 μm to 48.7 μm.
In this scheme, the specific thickness of the composite window film is not limited in detail, and those skilled in the art can reasonably select the thickness according to the specific application environment, for example, the thicker the thickness of the composite window film, the better the corresponding performance, but the poorer the flexibility, and the reasonable thickness can be specifically selected according to the requirement of the use environment on the performance of the composite window film.
In some possible embodiments, the polyurethane coating layer has a visible light transmission of greater than 80%.
In some possible embodiments, the corona layer has a thickness of 0.1 μm to 0.2 μm.
In some possible embodiments, the thickness of the PCT layer is 20 μm to 25 μm.
In some possible embodiments, the PVDF layer has a visible light transmission greater than 78%.
In some possible embodiments, the PA layer has a thickness of 10 μm to 15 μm.
In some possible embodiments, the PVDF layer has a thickness of 5 μm to 7.5 μm.
In some possible embodiments, the composite window film further comprises a first transparent protective layer adhered to the polyurethane coating layer on a side thereof remote from the corona layer, and a second transparent protective layer adhered to the PVDF layer on a side thereof remote from the PA layer.
In some possible embodiments, the first transparent protective layer and the second transparent protective layer are equal in thickness.
In some possible embodiments, bumps for improving the puncture resistance of the first transparent protection layer and the second transparent protection layer are arranged on the first transparent protection layer and the second transparent protection layer, and the bumps are hemispherical.
The convex points on the first transparent protective layer and the first transparent protective layer are of an integral structure, and the convex points on the second transparent protective layer and the second transparent protective layer are of an integral structure.
The above statement:
PCT: the abbreviation of poly terephthalic acid 1, 4-cyclohexane dimethanol ester is also called poly cyclohexylene dimethylene terephthalate resin.
PA: a polyamide.
PVDF: polyvinylidene fluoride.
The composite window film can be prepared by the following method:
respectively melting raw materials of a PCT layer, a PA layer and a PVDF layer at a high temperature of 290-300 ℃, vacuumizing at 1.5-2 mbr and filtering at 13-15 mu m to obtain melts of all layers, wherein the PCT layer comprises optical PCT slices accounting for 95-100% of the total weight of the PCT layer, and the balance is a base window film mother slice, and the PA layer comprises a bis (4-carboxyphenyl) phenylphosphine oxide PA base mother slice accounting for 0-10% of the total weight of the PA layer;
converging and extruding the prepared melts of all layers in a die head to prepare a three-layer co-extrusion structure;
attaching the prepared three-layer co-extrusion structure to the surface of a cooling drum at the temperature of between 28 and 31 ℃, cooling to obtain a cast sheet, drawing the obtained cast sheet into a longitudinal drawing area to longitudinally draw the cast sheet to form a thin material, wherein the temperature of the longitudinal stretching preheating section is 67-72 ℃, the temperature of the stretching section is 73-76 ℃, the far infrared temperature is 100-125 ℃, the temperature of the shaping section is 30-40 ℃, the stretching ratio is 2.9-3.4, the thin material after longitudinal stretching is subjected to 6-8 kw high-voltage corona on the surface of the PCT layer, the corona surface is coated on one side by polyurethane coating with the coating speed of 65m/min to 85m/min, the thin material is drawn into a transverse drawing area after the coating is finished, transverse drawing and high-temperature shaping are carried out to obtain a biaxial tension film, wherein the temperature of the transverse stretching preheating zone is 95-110 ℃, the temperature of the stretching zone is 110-125 ℃, and the temperature of the shaping zone is 225-235 ℃.
The preparation method also comprises the steps of performing thickness measurement feedback, flattening and static electricity removal treatment on the biaxially oriented film, and then rolling the biaxially oriented film subjected to static electricity removal treatment to form the composite window film.
The transparent protective layer may be bonded to the composite window film prepared in the above-described method at the time of use.
While several possible embodiments of the disclosure have been described above with reference to the accompanying drawings, it is to be understood that these embodiments are not all embodiments of the disclosure, and that other embodiments may be devised by those skilled in the art without departing from the inventive concept, and that such embodiments are within the scope of the disclosure.
Claims (10)
1. A composite window film is characterized in that: the composite window film comprises a polyurethane coating layer (1), a corona layer (2), a PCT layer (3), a PA layer (4) and a PVDF layer (5) which are sequentially arranged from bottom to top, wherein the total thickness of the composite window film is 35.6-48.7 microns.
2. A composite window film as defined in claim 1, wherein: the visible light transmittance of the polyurethane coating layer (1) is more than 80%.
3. A composite window film as defined in claim 1, wherein: the thickness of the corona layer (2) is 0.1 to 0.2 μm.
4. A composite window film as defined in claim 1, wherein: the thickness of the PCT layer (3) is 20-25 μm.
5. A composite window film as defined in claim 1, wherein: the visible light transmittance of the PVDF layer (5) is more than 78%.
6. A composite window film as defined in claim 1, wherein: the PA layer (4) has a thickness of 10 to 15 [ mu ] m.
7. A composite window film as defined in claim 1, wherein: the thickness of the PVDF layer (5) is 5 to 7.5 [ mu ] m.
8. A composite window film as defined in claim 1, wherein: the composite window film further comprises a first transparent protective layer, wherein the first transparent protective layer is bonded to the polyurethane coating layer (1) and is far away from one side of the corona layer (2), the composite window film further comprises a second transparent protective layer, and the second transparent protective layer is bonded to the PVDF layer (5) and is far away from one side of the PA layer (4).
9. A composite window film as defined in claim 8, wherein: the thicknesses of the first transparent protective layer and the second transparent protective layer are equal.
10. A composite window film as defined in claim 8, wherein: the first transparent protective layer and the second transparent protective layer are respectively provided with a salient point for improving the puncture resistance of the first transparent protective layer and the second transparent protective layer, and the shape of the salient point is hemispherical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921763497.7U CN210706399U (en) | 2019-10-19 | 2019-10-19 | Composite window film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921763497.7U CN210706399U (en) | 2019-10-19 | 2019-10-19 | Composite window film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210706399U true CN210706399U (en) | 2020-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921763497.7U Active CN210706399U (en) | 2019-10-19 | 2019-10-19 | Composite window film |
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| Country | Link |
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| CN (1) | CN210706399U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110588117A (en) * | 2019-10-19 | 2019-12-20 | 杭州和顺科技股份有限公司 | Composite window film and preparation method thereof |
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2019
- 2019-10-19 CN CN201921763497.7U patent/CN210706399U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110588117A (en) * | 2019-10-19 | 2019-12-20 | 杭州和顺科技股份有限公司 | Composite window film and preparation method thereof |
| CN110588117B (en) * | 2019-10-19 | 2024-05-03 | 杭州和顺科技股份有限公司 | Composite window film and preparation method thereof |
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