CN113025228A - Heating composite color-changing film and preparation method thereof - Google Patents
Heating composite color-changing film and preparation method thereof Download PDFInfo
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- CN113025228A CN113025228A CN202110382967.0A CN202110382967A CN113025228A CN 113025228 A CN113025228 A CN 113025228A CN 202110382967 A CN202110382967 A CN 202110382967A CN 113025228 A CN113025228 A CN 113025228A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 28
- 239000002131 composite material Substances 0.000 title claims description 3
- 238000002360 preparation method Methods 0.000 title description 7
- 239000010410 layer Substances 0.000 claims abstract description 137
- 239000011248 coating agent Substances 0.000 claims abstract description 63
- 238000000576 coating method Methods 0.000 claims abstract description 63
- 238000005260 corrosion Methods 0.000 claims abstract description 31
- 239000000758 substrate Substances 0.000 claims abstract description 29
- 238000010030 laminating Methods 0.000 claims abstract description 27
- 230000003678 scratch resistant effect Effects 0.000 claims abstract description 27
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000000741 silica gel Substances 0.000 claims abstract description 17
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 17
- 238000001035 drying Methods 0.000 claims description 12
- 238000005266 casting Methods 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 230000007797 corrosion Effects 0.000 claims description 7
- 229920002635 polyurethane Polymers 0.000 claims description 7
- 239000004814 polyurethane Substances 0.000 claims description 7
- 238000004804 winding Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000002834 transmittance Methods 0.000 claims description 3
- 238000013329 compounding Methods 0.000 claims description 2
- 239000002002 slurry Substances 0.000 claims description 2
- 239000003973 paint Substances 0.000 abstract description 14
- 238000005562 fading Methods 0.000 abstract description 7
- 238000005406 washing Methods 0.000 abstract description 6
- 230000003373 anti-fouling effect Effects 0.000 abstract description 5
- 238000009413 insulation Methods 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000006748 scratching Methods 0.000 abstract description 3
- 230000002393 scratching effect Effects 0.000 abstract description 3
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 16
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 16
- 229920000915 polyvinyl chloride Polymers 0.000 description 9
- 239000004800 polyvinyl chloride Substances 0.000 description 9
- 239000012528 membrane Substances 0.000 description 5
- 238000004383 yellowing Methods 0.000 description 5
- 230000032683 aging Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000003916 acid precipitation Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000002310 reflectometry Methods 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000003712 anti-aging effect Effects 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 239000011241 protective layer Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/29—Laminated material
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2427/00—Presence of halogenated polymer
- C09J2427/006—Presence of halogenated polymer in the substrate
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2433/00—Presence of (meth)acrylic polymer
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2475/00—Presence of polyurethane
- C09J2475/006—Presence of polyurethane in the substrate
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Laminated Bodies (AREA)
- Adhesive Tapes (AREA)
Abstract
The color-changing film is formed by laminating and laminating a release film layer, a pressure-sensitive adhesive layer, a first substrate layer, a color layer, a second substrate layer, a scratch-resistant anti-corrosion ultraviolet-isolating coating, a silica gel release film layer and an original film layer from top to bottom. According to the invention, the color layer is firmly protected by the second base material layer formed by a heating laminating technology, and the color is locked without fading; the scratch-resistant anti-corrosion ultraviolet-isolating coating can resist tiny scratches and spiral threads generated during car washing or high-speed driving, protects the color layer, ensures that the original car paint of the car cannot be damaged during daily scratching, and has strong scratch resistance; the scratch-resistant anti-corrosion ultraviolet-insulation coating has the advantages that the surface is smooth, stains are difficult to stay on the surface, the antifouling property is strong, car owners can reduce car washing times, the car maintenance time and cost are saved, meanwhile, the scratch-resistant anti-corrosion ultraviolet-insulation coating can prevent external harmful substances from invading and corroding the color-changing film and the car paint like a protection shield, the service life is long, and the mass production is easy to realize.
Description
Technical Field
The invention relates to the technical field of film preparation, in particular to a heating laminating type color-changing film and a preparation method thereof.
Background
The surface of a traditional automobile is generally exposed in the air, when the surface of the automobile is irradiated by sunlight for a long time, the ultraviolet radiation in the sun can cause the fading and yellowing of the automobile paint surface, and the aging of the paint surface material is accelerated; when corrosive substances such as acid rain fall on the surface of the automobile, paint can be corroded, so that the paint is peeled off, and the material of the paint surface is rusted; and the scratch of the automobile is inevitable when the automobile is used, so that fine scratches can be caused to the automobile body when the automobile is washed and runs at high speed, the paint repairing process is time-consuming and labor-consuming, and the subsequent value keeping problem of the automobile is influenced. Therefore, the color-changing film is favored by consumers.
At present, the conventional color-changing film on the market, namely a film attached to the paint surface of an automobile, has the defects of no pollution resistance, no scratch resistance, no corrosion resistance, easy color fading, easy yellowing, poor stretchability and the like, adopts PVC (polyvinyl chloride) as a base material, can only temporarily change the color of an automobile body, is extremely brittle and easy to crack under the condition of low temperature, is easy to delaminate under the condition of high temperature due to the characteristics of the PVC base material, and cannot be perfectly attached to the surface of the automobile; the ultraviolet rays can not be reflected completely, and the color layer is easy to age and fade; because PVC exposes outside directly, does not have the protective layer, can not receive the corruption of harmful substance such as acid rain, also can not play any anti effect of scraping, the membrane of changing colors is easy to be decolored, fault, luminance reduction, and aesthetic property and functional are all not good, and short service life also has the restriction in the popularization of product.
Disclosure of Invention
Based on the above, the invention aims to provide a heating laminating type color-changing film and a preparation method thereof, so as to improve the ultraviolet-proof, antifouling and corrosion-resistant effects of the color-changing film.
On one hand, the invention provides a heating laminating type color changing film which is formed by laminating and laminating a release film layer, a pressure sensitive adhesive layer, a first substrate layer, a color layer, a second substrate layer, a scratch-resistant anti-corrosion ultraviolet-proof coating, a silica gel release film layer and an original film layer from top to bottom.
Further, the release film layer is white and is made of PET;
former rete adopts PET to make, and thickness is 10 ~ 30 um.
Further, the pressure-sensitive adhesive layer is made of acrylate, and the thickness of the pressure-sensitive adhesive layer is 10-85 um.
Further, the first base material layer is made of PVC or TPU, and the thickness of the first base material layer is 5-140 um;
the second substrate layer adopts TPU to make, and thickness is 5 ~ 140 um.
Furthermore, the scratch-resistant anti-corrosion ultraviolet-proof coating is prepared by mixing modified polyurethane and a UV agent, the hardness is not less than 4H, and the thickness is 5-6 um.
Further, silica gel is from type rete, and thickness is 2 ~ 20 um.
Further, the visible light band transmittance of the first base material layer and the second base material layer is not less than 45%.
On the other hand, the invention provides a preparation method of a heating laminating type color-changing film, which is characterized by comprising the following steps:
step S10, coating a layer of pressure-sensitive adhesive on the upper surface of the first base material layer to form a pressure-sensitive adhesive layer, and compounding a layer of release film on the top surface of the pressure-sensitive adhesive layer to form a release film layer;
step S11, coating color slurry on the lower surface of the first base material layer and drying to form a color layer;
step S12, a TPU film is coated on the lower surface of the color layer by adopting a TPU film drawing line in a heating and coating mode to form a second base material layer;
step S13, coating a layer of mixture of modified polyurethane and UV agent on the lower surface of the second substrate layer to form a scratch-resistant anti-corrosion ultraviolet-proof coating;
step S14, coating a layer of liquid silica gel on the top surface of the original film layer and drying to form a silica gel release film layer;
and step S15, the silica gel release film layer and the scratch-resistant anti-corrosion ultraviolet-isolating coating are closely adhered together in a winding coating adhesion mode to form the heating coating type color changing film.
Further, in the step S11, the coating speed is 10m/min, and the drying temperature is 120 ℃;
in the step S13, the coating speed is 5 m/min;
in the step S14, the coating speed is 25m/min, and the drying temperature is 150 ℃.
Further, in the step S12, the casting speed of the TPU film drawing line is 3-10 m/min, and the temperature in the box body is gradually increased to 205 ℃ from 120 ℃.
Compared with the prior art, the heating laminating type color changing film has the following advantages that:
firstly, a second substrate layer formed by a heating laminating technology is used for firmly protecting a color layer, locking the color without losing, isolating air, resisting oxidation and protecting an automobile color changing film from fading, yellowing and aging;
secondly, the scratch-resistant anti-corrosion ultraviolet-isolating coating can resist fine scratches and spiral lines generated during vehicle washing or high-speed driving, protects a color layer, ensures that the original vehicle paint of an automobile is not damaged during daily scratching, and has strong scratch resistance;
thirdly, the scratch-resistant anti-corrosion ultraviolet-isolating coating has a smooth surface, stains are difficult to stay on the surface, the antifouling property is strong, car owners can reduce car washing times, the car maintenance time and cost are saved, meanwhile, the scratch-resistant anti-corrosion ultraviolet-isolating coating can prevent external harmful substances from invading and corroding the color-changing film and the car paint like a protection shield, the service life is long, and the mass production is easy to realize.
Drawings
Fig. 1 is a schematic structural diagram of a heating laminating type color changing film in an embodiment of the invention.
Description of the main element symbols:
| |
1 | Pressure-sensitive |
2 |
| First |
3 | |
4 |
| Second |
5 | Scratch-resistant anti-corrosion ultraviolet-insulating coating | 6 |
| Silica gel release film layer | 7 | |
8 |
The following detailed description will further illustrate the invention in conjunction with the above-described figures.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Several embodiments of the invention are presented in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, in one aspect, the present invention provides a heating laminating type color changing film, which is formed by laminating a release film layer 1, a pressure sensitive adhesive layer 2, a first substrate layer 3, a color layer 4, a second substrate layer 5, a scratch-resistant, anti-corrosion and ultraviolet-blocking coating layer 6, a silica gel release film layer 7 and an original film layer 8 from top to bottom.
In the invention, the primary color of the color changing film is determined by the color layer 4, so that the color of the vehicle body is changed; the color-changing film has good stretchability, can be tightly attached to the surfaces of automobiles with various radians, does not bubble and is convenient to construct; the scratch-resistant anti-corrosion ultraviolet-isolating coating 6 can block ultraviolet rays, so that the problems of aging, fading, yellowing and the like of a color layer of a color-changing film and an automobile paint surface are avoided, the color is kept bright for a long time, and meanwhile, the scratch-resistant and corrosion-resistant functions can be realized; the color-changing film is cold-resistant and heat-resistant, and does not crack in winter or delaminate in summer.
In a preferred embodiment of the invention, the release film layer 1 is white and made of PET, and needs to be removed in the construction process, and has no practical effect;
In another preferred embodiment of the invention, the pressure-sensitive adhesive layer 2 is made of acrylate, the thickness of the pressure-sensitive adhesive layer is 10-85 um, and the pressure-sensitive adhesive layer 2 is used for being attached to the release film layer 1 and the first substrate layer 3.
Preferably, in the invention, the first substrate layer 3 is made of PVC (polyvinyl chloride) or TPU (thermoplastic polyurethane elastomer), and has a thickness of 5-140 um;
the second substrate layer 5 is made of TPU, and the thickness is 5-140 um.
In a preferred embodiment of the invention, the scratch-resistant, corrosion-resistant and ultraviolet-proof coating 6 is prepared by mixing modified polyurethane and a UV agent, the hardness is not less than 4H, and the thickness is 5-6 um. Specifically, the scratch-resistant corrosion-resistant ultraviolet-isolating coating 6 is prepared by mixing 95% of modified polyurethane and 5% of UV agent, and the UV agent is used for isolating ultraviolet rays.
In another preferred embodiment of the present invention, the silica gel release film layer 7 is used for protecting the scratch-resistant, corrosion-resistant and ultraviolet-insulating coating 6 and the second substrate layer 5, and has a thickness of 2-20 um.
Furthermore, the visible light band transmittances of the first substrate layer 3 and the second substrate layer 5 are not less than 45%.
In a preferred embodiment of the present invention, the thickness of each layer of the color changing film is:
(1) the thickness of the release film layer 1 is 75 um;
(2) the pressure-sensitive adhesive layer 2 is 30um thick;
(3) a first substrate layer 3 with a thickness of 120 um;
(4) a color layer 4 with a thickness of 6 um;
(5) a second substrate layer 5 with a thickness of 130 um;
(6) the thickness of the anti-scraping and anti-corrosion coating 6 is 6 um;
(7) the silica gel release film layer 7 has the stripping force of 2 gf/square meter and the thickness of 2 um;
(8) and the original membrane layer 8 is 23um thick.
Specifically, in this example, a color-modified film having a length of 100mm and a width of 25mm was used for the test, as shown in table 1.
Table 1 test verification of color-changing film
As can be seen from Table 1, the anti-stretching, anti-fouling, anti-corrosion, anti-aging, anti-fading and repairability properties of the color-changing film can meet the requirements, and the reflectivity of the color-changing film to ultraviolet rays with a wave band of 365nm can reach more than 90%.
On the other hand, the invention provides a preparation method of a heating laminating type color-changing film, which is characterized by comprising the following steps:
step S10, coating a layer of pressure sensitive adhesive on the upper surface of the first substrate layer 3 to form a pressure sensitive adhesive layer 2, and laminating a release film on the top surface of the pressure sensitive adhesive layer 2 to form a release film layer 1;
in this step, the first base material layer 3 is made of transparent flexible PVC or TPU, and is coated by a winding type coating and bonding method. Before step S10, a PET release film is provided so as to prepare a release film layer 1 and a raw film layer 8, and it is required to ensure that the PET release film does not deform when lifted under the condition of a tension of 250-300N.
Step S11, coating color paste on the lower surface of the first substrate layer 3 and drying to form a color layer 4;
specifically, in the step, the coating is carried out by a winding type coating and attaching mode, the coating speed is 10m/min, and the drying temperature is 120 ℃.
Step S12, covering a layer of TPU film on the lower surface of the color layer 4 by adopting a TPU film drawing line in a heating and covering mode to form a second base material layer 5;
in the step, the casting speed of the TPU film drawing line is 3-10 m/min, and the temperature in the box body is gradually increased to 205 ℃ from 120 ℃.
Specifically, in the step, firstly, granular TPU substrate particles are provided and are placed into casting film drawing equipment, the equipment has 15 sections of carriage bodies, the temperature of the carriage bodies is increased section by section, the TPU particles are heated from the first section of carriage body and are subjected to screw extrusion until the temperature is raised to 205 ℃ (as shown in table 2), after the TPU particles are completely extruded and melted into a liquid state, the TPU particles are uniformly cast on a lower covering film (a PVC film coated with a color layer) through a slit type extrusion die (the width is 170cm), and are extruded and attached through two mirror surface rollers, and the casting speed is 3-10 m/min. The film thickness is controlled by the casting speed, namely the flow speed is high, the film layer is thin, the flow speed is low and the film layer is thick.
Table 2 temperature of each section of box in casting film-drawing equipment
| Compartment body/ |
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
| Temperature/. degree.C | 120 | 125 | 130 | 135 | 140 | 150 | 160 | 165 | 170 | 180 | 185 | 190 | 195 | 200 | 205 |
Preferably, in this step, the casting speed is 3m/min, and the thickness is moderate. Through adopting this technique, reducible one deck pressure sensitive adhesive layer prevents that this color changing membrane from leading to appearing the phenomenon of coming unstuck after long-time the use for firm laminating more between the rete.
Step S13, coating a layer of mixture of modified polyurethane and UV agent on the lower surface of the second substrate layer 5 to form a scratch-resistant anti-corrosion ultraviolet-proof coating 6;
specifically, in the step, coating is carried out in a winding type coating and attaching mode, and the coating speed is 5 m/min;
step S14, coating a layer of liquid silica gel on the top surface of the original membrane layer 8 and drying to form a silica gel release membrane layer 7;
specifically, in the step, the coating is carried out by a winding type coating and attaching mode, the coating speed is 25m/min, and the drying temperature is 150 ℃.
And step S15, closely adhering the silica gel release film layer 7 and the scratch-resistant anti-corrosion ultraviolet-isolating coating 6 together in a winding coating adhesion manner to form a heating coating type color-changing film.
In summary, the heating coating type color changing film of the invention has the following advantages:
firstly, a second substrate layer 5 formed by a heating laminating technology is used for firmly protecting a color layer 4, locking the color without losing color, isolating air, resisting oxidation and protecting an automobile color changing film from fading, yellowing and aging;
secondly, the scratch-resistant anti-corrosion ultraviolet-isolating coating 6 can resist fine scratches and spiral lines generated during vehicle washing or high-speed driving, protects a color layer, simultaneously ensures that the original vehicle paint of the automobile cannot be damaged in daily scratching, has strong scratch resistance, and has an ultraviolet reflectivity of 90 percent to 365nm wave band;
thirdly, the surface of the scratch-resistant anti-corrosion ultraviolet-insulation coating 6 is smooth, stains are difficult to stay on the surface, the antifouling property is strong, car owners can reduce car washing times, the car maintenance time and cost are saved, meanwhile, the scratch-resistant anti-corrosion ultraviolet-insulation coating 6 can prevent external harmful substances from invading and corroding the color-changing film and the car paint like a protection shield, the service life is long, and the mass production is easy to realize.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A heating laminating type color changing film is characterized in that: the color-changing film is formed by laminating a release film layer, a pressure-sensitive adhesive layer, a first substrate layer, a color layer, a second substrate layer, a scratch-resistant anti-corrosion ultraviolet-proof coating, a release film layer and an original film layer from top to bottom.
2. The heating laminating type color changing film as claimed in claim 1, wherein the release film layer is white and made of PET;
former rete adopts PET to make, and thickness is 10 ~ 30 um.
3. The heating laminating type color-changing film according to claim 1, wherein the pressure-sensitive adhesive layer is made of acrylate and has a thickness of 10-85 um.
4. The heating laminating type color changing film as claimed in claim 1, wherein the first substrate layer is made of PVC or TPU and has a thickness of 5-140 um;
the second substrate layer adopts TPU to make, and thickness is 5 ~ 140 um.
5. The heating composite color-changing film according to claim 1, wherein the scratch-resistant, corrosion-resistant and ultraviolet-proof coating is prepared by mixing modified polyurethane and a UV agent, the hardness is not less than 4H, and the thickness is 5-6 um.
6. The heating laminating type color changing film as claimed in claim 1, wherein the thickness of the silica gel release film layer is 2-20 um.
7. The heat-on color changing film according to claim 1, wherein the first substrate layer and the second substrate layer have a transmittance in the visible light band of no less than 45%.
8. A method for preparing a heat-laminating color-changing film according to any one of claims 1 to 7, comprising the steps of:
step S10, coating a layer of pressure-sensitive adhesive on the upper surface of the first base material layer to form a pressure-sensitive adhesive layer, and compounding a layer of release film on the top surface of the pressure-sensitive adhesive layer to form a release film layer;
step S11, coating color slurry on the lower surface of the first base material layer and drying to form a color layer;
step S12, a TPU film is coated on the lower surface of the color layer by adopting a TPU film drawing line in a heating and coating mode to form a second base material layer;
step S13, coating a layer of mixture of modified polyurethane and UV agent on the lower surface of the second substrate layer to form a scratch-resistant anti-corrosion ultraviolet-proof coating;
step S14, coating a layer of liquid silica gel on the top surface of the original film layer and drying to form a silica gel release film layer;
and step S15, closely adhering the silica gel release film layer and the scratch-resistant anti-corrosion ultraviolet-isolating coating together in a winding coating adhesion manner to form the heating coating type color-changing film.
9. The heating laminating type color-changing film according to claim 8, wherein in the step S11, the coating speed is 10m/min, and the drying temperature is 120 ℃;
in the step S13, the coating speed is 5 m/min;
in the step S14, the coating speed is 25m/min, and the drying temperature is 150 ℃.
10. The heating laminating type color-changing film according to claim 8, wherein in the step S12, the casting speed of the TPU film drawing line is 3-10 m/min, and the temperature in the box is increased to 205 ℃ from 120 ℃.
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| CN202110382967.0A CN113025228A (en) | 2021-04-09 | 2021-04-09 | Heating composite color-changing film and preparation method thereof |
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| CN202110382967.0A CN113025228A (en) | 2021-04-09 | 2021-04-09 | Heating composite color-changing film and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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