A kind of preparation method of polymer composite film

Abstract

The invention discloses a preparation method of a polymer composite film, comprising: (1) cleaning and drying the surface of a base material; (2) performing antifouling protection on one side of the base material; (3) cleaning the base material Spraying or coating thermosetting paint on the front; (4) curing the substrate to form a film; (5) printing the pattern on the film on the front of the substrate to form a decorative pattern; (6) removing the antifouling protective material and cleaning (7) leave the film for a preset time, and then peel off the film with the decorative pattern from the surface of the substrate; (8) protect the front side of the film and make it into a roll. In the present invention, single-layer or multi-layer composite films are prepared by using the paint strippable film-making technology. The method is simple, and the preparation cost of the composite film is greatly reduced. Moreover, the stripping process is simple, and no release agent, organic solvent and acid-base solution are used. The surface can achieve a specular highlight effect.

Description

technical field

[0001] The invention relates to the technical field of film processing, in particular to a preparation method of a polymer composite film. Background technique

[0002] Films made of polyvinyl chloride, polyethylene, polypropylene, polystyrene, and other resins used in packaging and as laminations. Plastic packaging and plastic packaging products are taking an increasing share in the market, especially composite plastic flexible packaging, which has been widely used in food, medicine, chemical and other fields. There are many methods for forming plastic films, such as calendering, casting, blow molding, and stretching. These production methods have the characteristics of high production efficiency and large output.

[0003] For multi-layer multifunctional composite films, the traditional preparation methods include: 1. Laminate the thermoplastic films that have been manufactured, and bond the layers with adhesives. 2. Adopt multi-layer co-extrusion molding,...

Examples

preparation example Construction

[0059] Traditional film production uses thermoplastics through blow molding, calendering, casting, multi-layer co-extrusion and other methods, but the present invention uses thermosetting coating materials and construction principles to make single-layer or multi-layer high-quality films with different functions. The molecular composite film is then peeled off from the substrate, with small equipment investment, flexible production organization, rich film types and functions, and personalized customization. The number of composite layers is not limited by the equipment, and the thickness can be adjusted flexibly; due to the wide variety of coatings, coating various functional coatings can realize more functions of the composite film. Specifically, such as figure 1 Shown, the preparation method of polymer composite film of the present invention comprises:

[0060] S101. Clean and dry the surface of the substrate.

[0061] The material of the substrate is glass, ceramics, meta...

Embodiment 1

[0138] Example 1: Three-layer composite decorative film with high gloss and high hardness mirror surface

[0139] 1) Selection of base material: choose a piece of ordinary white glass of 400*600*5mm, first wash the surface with clean water and dry it at 120°C for 5 minutes;

[0140] 2) Antifouling protection is carried out on one side of the cleaned and dried substrate, which is the back side;

[0141] 3) The UV radiation-cured transparent coating is applied by roller coating, such as EBECRY1600 of Allnex Company, to the front of the substrate with a paint film thickness of 8 μm, and then cured by UV radiation to form a UV radiation-cured coating;

[0142] 4) Using electrostatic powder spraying equipment, two-component polyester powder coatings, such as SJ-4G and SJ-4H produced by Anhui Shenjian Company, are made with TGIC as the curing agent (the amount of curing agent added is 1-20%) The powder coating is sprayed on the ultraviolet radiation cured coating that completed ste...

Embodiment 2

[0151] Example 2: High-gloss mirror surface double-layer composite metal effect decorative film

[0152] 1) Selection of base material: choose a piece of ordinary white glass of 400*600*5mm, first wash the surface with clean water and dry it at 120°C for 5 minutes;

[0153] 2) Antifouling protection is carried out on one side of the cleaned and dried substrate, which is the back side;

[0154] 3) Using electrostatic powder spraying equipment, two-component polyester powder coatings, such as SJ-4G and SJ-4H produced by Anhui Shenjian Company, supplemented with TGIC as a curing agent (the amount of curing agent added is 1-20%), And mix 1-10% aluminum powder and 1-10% pearl powder to make powder coating, spray on the front of the glass, and bake in an oven at 160 ° C for 15 minutes to form a layer of metal with a thickness of 40 μm Silver effect coating;

[0155] 4) the workpiece that completes step 4) is cooled to room temperature;

[0156] 5) Using electrostatic powder spray...

technical field

[0001] The invention relates to the technical field of film processing, in particular to a preparation method of a polymer composite film. Background technique

[0002] Films made of polyvinyl chloride, polyethylene, polypropylene, polystyrene, and other resins used in packaging and as laminations. Plastic packaging and plastic packaging products are taking an increasing share in the market, especially composite plastic flexible packaging, which has been widely used in food, medicine, chemical and other fields. There are many methods for forming plastic films, such as calendering, casting, blow molding, and stretching. These production methods have the characteristics of high production efficiency and large output.

[0003] For multi-layer multifunctional composite films, the traditional preparation methods include: 1. Laminate the thermoplastic films that have been manufactured, and bond the layers with adhesives. 2. Adopt multi-layer co-extrusion molding,...

Examples

preparation example Construction

[0059] Traditional film production uses thermoplastics through blow molding, calendering, casting, multi-layer co-extrusion and other methods, but the present invention uses thermosetting coating materials and construction principles to make single-layer or multi-layer high-quality films with different functions. The molecular composite film is then peeled off from the substrate, with small equipment investment, flexible production organization, rich film types and functions, and personalized customization. The number of composite layers is not limited by the equipment, and the thickness can be adjusted flexibly; due to the wide variety of coatings, coating various functional coatings can realize more functions of the composite film. Specifically, such as figure 1 Shown, the preparation method of polymer composite film of the present invention comprises:

[0060] S101. Clean and dry the surface of the substrate.

[0061] The material of the substrate is glass, ceramics, meta...

Embodiment 1

[0138] Example 1: Three-layer composite decorative film with high gloss and high hardness mirror surface

[0139] 1) Selection of base material: choose a piece of ordinary white glass of 400*600*5mm, first wash the surface with clean water and dry it at 120°C for 5 minutes;

[0140] 2) Antifouling protection is carried out on one side of the cleaned and dried substrate, which is the back side;

[0141] 3) The UV radiation-cured transparent coating is applied by roller coating, such as EBECRY1600 of Allnex Company, to the front of the substrate with a paint film thickness of 8 μm, and then cured by UV radiation to form a UV radiation-cured coating;

[0142] 4) Using electrostatic powder spraying equipment, two-component polyester powder coatings, such as SJ-4G and SJ-4H produced by Anhui Shenjian Company, are made with TGIC as the curing agent (the amount of curing agent added is 1-20%) The powder coating is sprayed on the ultraviolet radiation cured coating that completed ste...

Embodiment 2

[0151] Example 2: High-gloss mirror surface double-layer composite metal effect decorative film

[0152] 1) Selection of base material: choose a piece of ordinary white glass of 400*600*5mm, first wash the surface with clean water and dry it at 120°C for 5 minutes;

[0153] 2) Antifouling protection is carried out on one side of the cleaned and dried substrate, which is the back side;

[0154] 3) Using electrostatic powder spraying equipment, two-component polyester powder coatings, such as SJ-4G and SJ-4H produced by Anhui Shenjian Company, supplemented with TGIC as a curing agent (the amount of curing agent added is 1-20%), And mix 1-10% aluminum powder and 1-10% pearl powder to make powder coating, spray on the front of the glass, and bake in an oven at 160 ° C for 15 minutes to form a layer of metal with a thickness of 40 μm Silver effect coating;

[0155] 4) the workpiece that completes step 4) is cooled to room temperature;

[0156] 5) Using electrostatic powder spray...

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