CN115232567A - Invisible car cover protective film and one-step preparation method and application thereof - Google Patents
Invisible car cover protective film and one-step preparation method and application thereof Download PDFInfo
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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
- C09J7/22—Plastics; Metallised plastics
- C09J7/25—Plastics; Metallised plastics based on macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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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
- 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
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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
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/48—Stabilisers against degradation by oxygen, light or heat
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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
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
- C08J2375/06—Polyurethanes from polyesters
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/13—Phenols; Phenolates
- C08K5/134—Phenols containing ester groups
- C08K5/1345—Carboxylic esters of phenolcarboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3472—Five-membered rings
- C08K5/3475—Five-membered rings condensed with carbocyclic rings
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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
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
- C09J2301/122—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present only on one side of the carrier, e.g. single-sided adhesive tape
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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
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/302—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C
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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
- C09J2433/00—Presence of (meth)acrylic polymer
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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
- C09J2475/00—Presence of polyurethane
- C09J2475/006—Presence of polyurethane in the substrate
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
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Abstract
The invention relates to a invisible car cover protective film and a one-step preparation method and application thereof. The preparation method comprises the following steps: adopting double-screw co-extrusion production equipment, wherein one screw is added with a self-repairing material, and the other screw is added with an aliphatic base film material; the two materials are converged at the die head, and after the materials come out of the die head, the two sides of the materials are attached with the protective film on line; and the protective film on one side is directly coated with glue on line, is bonded and trimmed together with the untreated protective film on the other side through a compression roller after being dried, and is finally rolled into a finished product of the protective film for the invisible car cover. According to the one-step preparation method of the invisible car cover protective film, a double-layer co-extrusion technology is adopted, a 5-layer invisible car cover finished product is produced at one time, and the efficiency problem of three-time production in the traditional process is solved; and the whole production process does not need solvent, does not pollute the environment, and can greatly reduce the production cost and improve the product competitiveness.
Description
Technical Field
The invention relates to the technical field of automobile coatings, in particular to a hidden automobile coating protective film and a one-step preparation method and application thereof.
Background
The invisible car cover protective film is a high-performance novel environment-friendly film, is widely applied to the automobile beauty maintenance industry, and is commonly known as a transparent paint surface protective film. Firstly, the invisible car cover can isolate the car paint from the external environment, for example, impurities such as rainwater, bird droppings, dust and the like can be isolated from the car paint by the invisible car cover, so that the impurities cannot form acidic substances on the surface of the car paint. In summary, the invisible car cover can resist the damage of grease, weak base, gravel, acid rain and the like to the paint surface for a long time, has super toughness, can isolate the car paint surface from air after being attached, and can protect the paint surface for a long time. In addition, the invisible car cover also has good ultraviolet resistance, and can prevent the car paint from being damaged by long-time ultraviolet irradiation, thereby keeping the glossiness of the car paint. Moreover, the invisible car cover can not only protect the glossiness of the car paint, but also improve the glossiness of the car paint by 40%.
The materials of the existing invisible car cover are generally divided into PVC (heat-resistant polyethylene) and TPU (thermoplastic polyurethane elastomer rubber). Although the PVC invisible car cover film does not have great harm under the condition of just attaching the car cover, the yellowing rate of the PVC becomes fast along with the prolonging of time, and a lot of residual glue is left on a painted surface if the gluing process of the PVC is not too high, so that the PVC invisible car cover film is difficult to strip. And the TPU invisible car cover has more excellent performance and better environmental protection, so that the TPU invisible car cover is more favored by people. In addition, the TPU material also has many excellent characteristics of no yellowing, self-repairing, no adhesive residue, high tension, high tensile force, toughness, aging resistance and the like.
The existing invisible car cover protective film manufacturers buy a large roll of TPU base film in a coating factory, then coat acrylic acid pressure-sensitive adhesive on the surface of the TPU film, then coat a self-repairing coating, bake and cure the TPU film, and finally cut the TPU film into small rolls for sale. The production method is troublesome and has three processing procedures, namely production of the TPU base film, coating of the acrylic pressure-sensitive adhesive, coating of the self-repairing coating, and baking and curing after coating.
This production method has the following disadvantages:
1. the production efficiency is low: the buying base films are mostly imported abroad, i.e. they are mostly produced by foreign companies such as alutake (Argotec) usa, covestro (Covestro) germany, mardai japan, etc. The purchase time is longer. In addition, the acrylic pressure-sensitive adhesive needs to be coated on the base film after being purchased, and curing is needed for 48 hours after the coating is finished. And then coating the self-repairing layer, wherein the coating needs 72 hours of curing after the coating is finished, and the cutting and the shipment can be carried out after the curing is finished. The whole production process is long in time and low in efficiency, and meanwhile, a special curing room is needed for curing, so that a large amount of space is occupied, and the production cost is high.
2. The environmental pollution is serious: the self-repairing coating is actually hard TPU, the TPU particles are coated after being melted by using a solvent, a large amount of solvent is needed in the whole production process, and the pollution to the environment is large. At present, the requirement on environmental protection is higher, and if a workshop carries out harmless treatment on a volatile solvent, treatment equipment needs to be added, so that the construction cost is high. Many coating plants select remote places for production, the solvent is volatilized and directly discharged into the atmosphere, and the odor of the solvent volatilization can be smelled far outside the production plants, so that the environment is seriously polluted. In addition, the production method belongs to a secondary production method, and a self-repairing liquid needs to be coated on the surface of the TPU film by using a solvent, so that the solvent can corrode the surface of the TPU film, and the strength of the TPU film is reduced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a preparation method which has higher production efficiency and environmental protection and can produce the invisible car cover protective film by a one-step method, and also provides a product prepared by the preparation method and application thereof.
The technical scheme adopted by the invention is as follows: the one-step preparation method of the invisible car cover protective film comprises the following steps:
adopting double-screw co-extrusion production equipment, wherein one screw is added with a self-repairing material, and the other screw is added with an aliphatic base film material; the two materials are converged at the die head, and after the materials come out of the die head, the two sides of the materials are attached with the protective film on line; and the protective film on one side is directly coated with glue on line, is bonded and trimmed together with the untreated protective film on the other side through a compression roller after being dried, and is finally rolled into a finished product of the protective film for the invisible car cover.
Preferably, the self-repairing material comprises the following components in percentage by mass:
UV234 is an ultraviolet absorber with the chemical name: 2- (2 ' -hydroxy-3 ',5' -bis (a, a-dimethylbenzyl) phenyl) benzotriazole.
AO1010 is an antioxidant with the chemical name: pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ].
Preferably, the shore hardness of the hard polycarbonate aliphatic TPU is 55D-82D.
Preferably, the aliphatic base film material comprises the following components in percentage by mass:
97 to 99.5 percent of polycaprolactone aliphatic TPU,
UV234 0.3％～2％，
AO1010 0.15％～1％。
preferably, the Shore hardness of the polycaprolactone aliphatic TPU is 80-95A.
Preferably, the in-line glue coating operation is to coat a glue layer on one surface of the protective film by using a scraper.
Preferably, the adhesive layer is an environment-friendly acrylic pressure-sensitive adhesive.
Preferably, the drying operation is to dry the protective film coated with the glue layer through an oven.
Preferably, the protective film is a PET protective film.
The invisible car cover protective film is a product prepared by the preparation method.
Preferably, the invisible car cover protective film is respectively a PET protective film layer, a self-repairing coating layer, a polyester aliphatic TPU base film layer, an acrylic pressure-sensitive adhesive layer and a PET protective film layer from top to bottom.
The invisible car cover protective film is applied to the aspect of protecting car paint as a car cover film.
Compared with the prior art, the invention has the following advantages:
1. according to the one-step preparation method of the invisible car cover protective film, a double-layer co-extrusion technology is adopted, a finished invisible car cover product with a 5-layer structure of the PET protective film, the self-repairing coating, the aliphatic base film, the acrylic acid pressure-sensitive adhesive and the PET protective film is produced at one time, and the problem of efficiency of three-time production in the traditional process is solved.
2. According to the one-step preparation method of the invisible car cover protective film, a solvent is not needed in the whole production process, the environment is not polluted, the production cost can be greatly reduced, and the product competitiveness is improved. In addition, the one-step method adopts double-screw co-extrusion, no solvent is used for processing to corrode the surface of the film, and the strength is about one time of that of the traditional secondary production method.
3. The invisible car cover protective film has no problem of degumming after car pasting. The TPU film just coming out of the die head has the highest surface energy, and the bonding force with the adhesive layer is greatly superior to that of a secondary production method.
Drawings
FIG. 1 is a schematic processing diagram of the manufacturing process of the present invention.
Fig. 2 is a layer structure schematic diagram of the invisible car cover protective film of the invention.
The numbers in the figures indicate:
01-double-screw co-extrusion production equipment, 02-a first screw, 03-a second screw, 04-a die head, 05-a PET protective film unwinding mechanism, 06-a scraper, 07-an oven, 08-a compression roller and 09-a winding mechanism;
the adhesive comprises a 1-PET protective film layer, a 2-self-repairing coating layer, a 3-polyester aliphatic TPU base film layer and a 4-acrylic pressure-sensitive adhesive layer.
Detailed Description
For the purpose of enhancing the understanding of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and embodiment examples. The invention can be implemented by:
example 1
A one-step preparation method of a protective film of an invisible car cover comprises the following steps:
preparation of raw materials:
self-repairing material: 55 to 82D of a hard polycarbonate aliphatic TPU:97%, long-chain alkyl polysiloxane: 1%, UV234:1.5%, AO1010:0.5 percent, weighing the raw materials according to the mass percent, and mixing to prepare the self-repairing TPU material.
Aliphatic base film material: polycaprolactone aliphatic TPU with a hardness of 80-98A: 98.5%, UV234:1%, AO1010:0.5 percent. Weighing the raw materials according to the mass percent, and mixing to obtain the aliphatic TPU base film material.
Referring to fig. 1, double-screw co-extrusion production equipment 01 is adopted, a self-repairing TPU material is fed into a first screw 02, an aliphatic TPU base film material is fed into a second screw 03, the two materials are converged at a die head 04, the materials come out from the die head 04, and PET protective films are attached to the two sides of the materials on line. After the PET protective film on one side is unreeled through the PET protective film unreeling mechanism 05, the environment-friendly acrylic pressure-sensitive adhesive is coated by a scraper 06, then the PET protective film is dried through an oven 07, and after the PET protective film on the other side is unreeled through the PET protective film unreeling mechanism 05, the PET protective film on the other side is laminated, subjected to thickness measurement and edge cutting through a compression roller 08, and finally is reeled into a roll of finished automobile cover film through a reeling mechanism 09. The specific processing schematic diagram is shown in fig. 1. The invention utilizes the TPU to glue before unshaped, so that the adhesive force of the TPU base film layer and the glue layer is obviously superior to that of the product prepared by the conventional production method. The invisible car cover protective film of the embodiment 1 has a 5-layer structure (as shown in fig. 2), and comprises a PET protective film layer 1, a self-repairing coating layer 2, a polyester aliphatic TPU base film layer 3, an acrylic pressure-sensitive adhesive layer 4 and a PET protective film layer 1 from top to bottom.
Example 2
The difference between the embodiment 2 and the embodiment 1 is that the raw material ratio is different, the preparation process is the same as the embodiment 1, and the specific raw material ratio is as follows:
self-repairing material: 55 to 82D of a rigid polycarbonate aliphatic TPU:95%, long-chain alkyl polysiloxane: 2%, UV234:2%, AO1010:1 percent, weighing the raw materials according to the mass percent, and mixing to prepare the self-repairing TPU material.
Aliphatic base film material: polycaprolactone aliphatic TPU with a hardness of 80-98A: 97%, UV234:2%, AO1010:1 percent. The raw materials are weighed according to the mass percentage and mixed to prepare the aliphatic TPU base film material.
Example 3
The difference between the embodiment 3 and the embodiment 1 is that the raw material ratio is different, the preparation process is the same as the embodiment 1, and the specific raw material ratio is as follows:
self-repairing material: 55 to 82D of a rigid polycarbonate aliphatic TPU:99.45%, long-chain alkyl polysiloxane: 0.1%, UV234:0.3%, AO1010:0.15 percent, and weighing the raw materials according to the mass percent and mixing to prepare the self-repairing TPU material.
Aliphatic base film material: polycaprolactone aliphatic TPU with a hardness of 80-98A: 99.5%, UV234:0.35%, AO1010:0.15 percent. Weighing the raw materials according to the mass percent, and mixing to obtain the aliphatic TPU base film material.
The preparation method of the invention has the following advantages:
1. the one-step production reduces the processing procedures and has higher efficiency.
2. And a special curing room is not required to be built, so that the production cost is greatly reduced.
3. The preparation method belongs to a one-step method, is obviously different from the production mode of the traditional two-step method, adopts double-screw co-extrusion in the one-step method, does not corrode the surface of the film by a solvent during processing, and has the strength about one time that of the traditional secondary production method; in addition, the self-repairing coating is processed by using a screw without a solvent, and the production process is environment-friendly and harmless.
4. The TPU film just coming out of the die head has the highest surface energy, the bonding force with the adhesive layer is greatly superior to that of a secondary production method, and a customer does not have the problem of degumming after the TPU film is attached to a vehicle.
And (3) performance comparison test:
the test method comprises the following steps: the tensile strength and adhesion tests were performed on the commercially available top entry car clothing films, the home-made car clothing films, and the samples of this example 1. The imported brands of TPU finished vehicle membranes are as follows: XPEL, velcro, teflon film, 3M, and the like. The domestic brands are: naer, shu Lai Mei De, tong Li, smart film method, jiangsu Qian Liang, en Xin, zhejiang Shijing window, dingxin, etc. The test samples were all commercially available.
And (3) testing results:
and (4) conclusion: the tensile strength, the elongation at break and the adhesion force with a steel plate of the invisible car cover protective film of the embodiment of the invention are obviously higher than those of common commercial products. The fracture resistance, the soft performance, the elasticity and the adhesion of the product of the invention are obviously higher than those of the common commercial products.
Finally, it should be noted that: 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 are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (10)
1. The one-step preparation method of the invisible car cover protective film is characterized by comprising the following steps of:
adopting double-screw co-extrusion production equipment, wherein one screw is added with a self-repairing material, and the other screw is added with an aliphatic base film material;
the two materials are converged at the die head, and after the materials come out of the die head, the two sides of the materials are attached with the protective film on line; and the protective film on one side is directly coated with glue on line, is bonded and trimmed together with the untreated protective film on the other side through a compression roller after being dried, and is finally rolled into a finished invisible car cover protective film.
2. The one-step preparation method of the invisible car cover protective film according to claim 1, wherein the self-repairing material comprises the following components in percentage by mass:
3. the one-step method for preparing the invisible car cover protective film according to claim 2, wherein the Shore hardness of the hard polycarbonate aliphatic TPU is 55D to 82D.
4. The one-step preparation method of the invisible car cover protective film according to claim 1, wherein the aliphatic base film material comprises the following components in percentage by mass:
97 to 99.5 percent of polycaprolactone aliphatic TPU,
UV234 0.3％～2％，
AO1010 0.15％～1％。
5. the one-step method for preparing the invisible car cover protective film according to claim 4, wherein the Shore hardness of the polycaprolactone aliphatic TPU is 80-95A.
6. The one-step method for preparing the protective film of the invisible car cover as claimed in any one of claims 1 to 5, wherein the specific operation of online gluing is to coat a glue layer on one surface of the protective film by a doctor blade, wherein the glue layer is an environment-friendly acrylic pressure-sensitive adhesive; the drying operation is to dry the protective film coated with the glue layer through an oven.
7. The one-step method for preparing the protective film of the invisible car cover as claimed in any one of claims 1 to 5, wherein the protective film is a PET protective film.
8. A protective film for invisible car clothes, characterized by being produced by the production method according to any one of the above claims 1 to 7.
9. The invisible car cover protective film according to claim 8, wherein the invisible car cover protective film is composed of a PET protective film layer (1), a self-repairing coating (2), a polyester aliphatic TPU base film layer (3), an acrylic pressure-sensitive adhesive layer (4) and a PET protective film layer (1) from top to bottom.
10. Use of the invisible car cover protective film according to claim 9 as a car cover film for protecting car paint.
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| CN112708369A (en) * | 2020-12-27 | 2021-04-27 | 宁波长阳科技股份有限公司 | Anti-yellowing invisible car cover protective film with self-repairing function and manufacturing process thereof |
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2022
- 2022-07-05 CN CN202210784368.6A patent/CN115232567A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1190922A (en) * | 1995-06-07 | 1998-08-19 | 艾弗里·丹尼森公司 | Extrusion coating process for making protective and decorative films |
| CN101228030A (en) * | 2005-04-29 | 2008-07-23 | 3M创新有限公司 | Multilayer polyurethane protective films |
| CN109837036A (en) * | 2017-09-25 | 2019-06-04 | 上海纳尔数码喷印材料股份有限公司 | A kind of anti-scratch anti-pollution TPU vehicle body protective film and its production technology |
| CN110819245A (en) * | 2019-11-11 | 2020-02-21 | 上海优珀斯材料科技有限公司 | Modified polyolefin elastomer film for protecting vehicle body paint surface and preparation method thereof |
| CN112708369A (en) * | 2020-12-27 | 2021-04-27 | 宁波长阳科技股份有限公司 | Anti-yellowing invisible car cover protective film with self-repairing function and manufacturing process thereof |
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