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Composite film without base coat and method for preparing composite film

A composite film and primer-free technology, which is applied in chemical instruments and methods, synthetic resin layered products, flexible coverings, etc., can solve the problems of high cost and poor printing fastness, and achieve good anti-aging performance and bright Good whitening effect, high affinity effect

Active Publication Date: 2019-04-05
福融新材料(江苏)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One of the uses of BOPP film is to stick to the surface of paper, such as books, packaging cartons, etc., to prevent moisture and increase surface gloss, but the disadvantages are: high cost and poor printing fastness

Method used

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  • Composite film without base coat and method for preparing composite film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A kind of primerless composite film, is made up of surface 1 layer, surface 2 layer and core layer;

[0022] The material of the core layer includes by weight fraction: T30S 98.9%, additive AS2335PP 1.10%,

[0023] Table 1 layer includes by weight fraction: FT810 99%, AB6018PPR 1%.

[0024] Table 2 layer includes by weight fraction: H030SG 93.00%, AB6018PP 7.00%.

[0025] The thickness of the composite film is 12 μm, and the mass ratio of the surface 1 layer, the core layer and the surface 2 layer is 1:10:1.

[0026] A method for preparing a primer-free composite film, the steps of which include: adopting a three-layer structure for co-extrusion followed by biaxial stretching molding, and the process parameters are controlled as follows: the temperature of the main extruder is 245-250 °C; the auxiliary extruder I The temperature is 210~240℃, the temperature of the auxiliary extruder II is 210~245℃, the die head temperature is 243℃, the water tank temperature is 30℃, t...

Embodiment 2

[0028] A kind of primerless composite film, is made up of surface 1 layer, core layer and surface 2 layers;

[0029] Table 1 layer includes by weight fraction: FT810 80%, short oil alkyd resin 15%, BYK320 3%, AB6018PP 2%;

[0030] The material of the core layer includes by weight fraction: T30S 95.9%, polyethylene glycol acrylate 3%, additive AS2335PP 1.10%;

[0031] Table 2 layer includes by weight fraction: H030SG 93.00%, AB6018PP 7.00%.

[0032] The thickness of the composite film is 12 μm, and the mass ratio of the surface 1 layer, the core layer and the surface 2 layer is 1:10:1.

[0033] The preparation method is the same as in Example 1, using a three-layer co-extrusion process.

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Abstract

The invention belongs to the technical field of thin film materials, and particularly relates to a composite film without base coat and a method for preparing the composite film. The composite film comprises surface 1 layers, surface 2 layers and core layers. Materials for the core layers include, by weight, 98.9% of T30S and 1.10% of additives AS2335PP, the surface 1 layers comprise, by weight, 99% of FT810 and 1% of AB6018PPR, and the surface 2 layers comprise, by weight, 93.00% of H030SG and 7.00% of AB6018PP. The composite film and the method have the advantages that processes for preparing the composite film are simple, raw materials for the composite film are environmentally friendly, the base coat is omitted, and the composite film and the method are free of undesirable odor volatilization; the composite film prepared by the aid of the method is excellent in mechanical property, high in abrasion resistance and good in anti-aging performance.

Description

technical field [0001] The invention belongs to the technical field of film materials, and in particular relates to a primerless composite film and a preparation method thereof. Background technique [0002] Biaxially oriented polypropylene film (BOPP) is an important product in the packaging field. It has the advantages of light weight, transparency, non-toxicity, moisture resistance, low air permeability, and high mechanical strength. It is widely used in food, medicine, daily light industry, cigarettes, etc. Product packaging and lamination. One of the uses of BOPP film is to stick to the surface of paper, such as books, packaging cartons, etc., to prevent moisture and increase surface gloss, but the disadvantages are: high cost and poor printing fastness. [0003] The surface of BOPP film can be coated with a layer of ethylene-vinyl acetate copolymer (EVA) raw material by extrusion process, and then heated and compounded with paper. This film with EVA is called pre-coa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/32B32B27/14B32B27/18B29C69/02B29C48/08B29C55/12B65D65/40
CPCB32B27/14B32B27/18B32B27/32B32B2264/0257B32B2307/21B32B2307/552B32B2307/554B65D65/40
Inventor 单利英王永祥
Owner 福融新材料(江苏)有限公司
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