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 cleaned and dried base material, the (3) wrap the thermoplastic film flatly on the front of the substrate; (4) spray the thermosetting powder coating on the thermoplastic film on the front of the substrate; (5) cure the substrate after spraying the thermosetting powder coating, Cool to normal temperature to form a composite film; (6) remove the antifouling protective material on the surface of the substrate and clean it; (7) place the substrate formed with the composite film to cool to normal temperature, peel the film off the surface of the substrate, And carry out winding packaging. The invention utilizes the paint-peelable film-making technology to prepare a single-layer or multi-layer composite film, the method is simple, the preparation cost of the composite film is greatly reduced, and the stripping process is simple, without using a release agent, an organic solvent and an acid-base solution.

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

[0045] 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:

[0046] S101. Clean and dry the surface of the substrate.

[0047]The material of the substrate is glass, ceramic or meta...

Embodiment 1

[0098] 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;

[0099] 2) One side of the cleaned and dried glass is protected against pollution, and this side is the back side;

[0100] 3) Paste the PET film on the front of the glass (let the use side face the glass), and fix it with carboxymethylcellulose sodium glue on the back of the glass;

[0101] 4) 96% of epoxy resin BE503 produced by Guodu Chemical Company and 2% of dicyandiamide curing agent produced by Ningxia Darong Company, and then add 0.5% leveling agent, 0.5% degassing agent, and 1% carbon black to make Powder coating, and then use electrostatic powder spraying equipment to spray the powder coating on the PET film that has completed step 3), and bake it in a hot air oven at a high temperature at 180 ° C for 15 minutes to form a layer of black film with a thickness of 30 μm. Coating, black coating and PET f...

Embodiment 2

[0106] 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;

[0107] 2) One side of the cleaned and dried glass is protected against pollution, and this side is the back side;

[0108] 3) One side of the PET film is provided with a wood grain pattern, and the PET film is pasted on the front side of the glass (the wood grain pattern side is attached to the glass), and the back of the glass is fixed with sodium carboxymethyl cellulose glue;

[0109] 4) Use 95% epoxy resin NPES903 produced by Nanya Company and 2% dicyandiamide produced by Ningxia Darong Company as curing agent, add 1% leveling agent, 1% degassing agent, and 1% white pigment to make Powder coating, and then use electrostatic powder spraying equipment to spray the powder coating on the PET film that has completed step 3), and bake it in a hot air oven at a high temperature at 190°C for 15 minutes to form a wh...

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

[0045] 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:

[0046] S101. Clean and dry the surface of the substrate.

[0047]The material of the substrate is glass, ceramic or meta...

Embodiment 1

[0098] 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;

[0099] 2) One side of the cleaned and dried glass is protected against pollution, and this side is the back side;

[0100] 3) Paste the PET film on the front of the glass (let the use side face the glass), and fix it with carboxymethylcellulose sodium glue on the back of the glass;

[0101] 4) 96% of epoxy resin BE503 produced by Guodu Chemical Company and 2% of dicyandiamide curing agent produced by Ningxia Darong Company, and then add 0.5% leveling agent, 0.5% degassing agent, and 1% carbon black to make Powder coating, and then use electrostatic powder spraying equipment to spray the powder coating on the PET film that has completed step 3), and bake it in a hot air oven at a high temperature at 180 ° C for 15 minutes to form a layer of black film with a thickness of 30 μm. Coating, black coating and PET f...

Embodiment 2

[0106] 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;

[0107] 2) One side of the cleaned and dried glass is protected against pollution, and this side is the back side;

[0108] 3) One side of the PET film is provided with a wood grain pattern, and the PET film is pasted on the front side of the glass (the wood grain pattern side is attached to the glass), and the back of the glass is fixed with sodium carboxymethyl cellulose glue;

[0109] 4) Use 95% epoxy resin NPES903 produced by Nanya Company and 2% dicyandiamide produced by Ningxia Darong Company as curing agent, add 1% leveling agent, 1% degassing agent, and 1% white pigment to make Powder coating, and then use electrostatic powder spraying equipment to spray the powder coating on the PET film that has completed step 3), and bake it in a hot air oven at a high temperature at 190°C for 15 minutes to form a wh...

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