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PTE pre-formed coating film for preventing surface wetting tension attenuation of film and processing method of PTE pre-formed coating film

A technology of wetting tension and processing method, applied in the direction of film/sheet release coating, film/sheet adhesive, coating, etc., can solve the problem of affecting printing quality, reducing production operation space, and corona on the surface of the film Value attenuation acceleration and other problems to achieve the effect of eliminating insufficient adhesion, saving equipment investment, and ensuring excellent quality

Inactive Publication Date: 2020-08-18
ANHUI GUOFENG PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the ordinary PET pre-coating film is left for a period of time, the ambient temperature and the water vapor in the air will accelerate the decay of the corona value on the surface of the film, which will cause the ink to migrate on the surface due to poor adhesion and affect the printing quality. Do it now and greatly reduce the production and operation space

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A PTE precoat film for preventing the attenuation of film surface wetting tension proposed by the present invention includes a hot melt adhesive layer, a primer layer, a substrate film layer and a surface treatment agent layer arranged in sequence from bottom to top.

[0023] The material of the surface treatment agent layer is composed of the following components by weight percentage: 5 parts of water-based polyurethane, 0.5 part of wetting agent, 0.5 part of curing agent, and 94 parts of water; wherein, water-based polyurethane is polyester aliphatic water-based polyurethane, wetting agent It is a silicone wetting agent, and the curing agent is an aromatic amine curing agent. The material consumption of the surface treatment agent layer is 2g / m 2 .

[0024] The material of the hot melt adhesive layer is made by mixing 87 parts of ethylene-vinyl acetate polymer, 2 parts of initiator, 3 parts of antioxidant, 1 part of plasticizer, 5 parts of paraffin and 2 parts of tac...

Embodiment 2

[0033] A PTE precoat film for preventing the attenuation of film surface wetting tension proposed by the present invention includes a hot melt adhesive layer, a primer layer, a substrate film layer and a surface treatment agent layer arranged in sequence from bottom to top.

[0034] The material of the surface treatment agent layer is composed of the following components by weight percentage: 15 parts of water-based polyurethane, 2.5 parts of wetting agent, 2.5 parts of curing agent, and 80 parts of water; wherein, the water-based polyurethane is polyester aliphatic water-based polyurethane, and the wetting agent It is an acrylic wetting agent, and the curing agent is a modified amine curing agent. The material consumption of the surface treatment agent layer is 3g / m 2 .

[0035] The material of the hot melt adhesive layer is made by mixing 92 parts of ethylene-vinyl acetate polymer, 1.5 parts of initiator, 2 parts of antioxidant, 1 part of plasticizer, 2.5 parts of paraffin ...

Embodiment 3

[0044] A PTE precoat film for preventing the attenuation of film surface wetting tension proposed by the present invention includes a hot melt adhesive layer, a primer layer, a substrate film layer and a surface treatment agent layer arranged in sequence from bottom to top.

[0045] The material of the surface treatment agent layer is composed of the following components by weight percentage: 8 parts of water-based polyurethane, 1 part of wetting agent, 1 part of curing agent, and 90 parts of water; wherein, the water-based polyurethane is polyester aliphatic water-based polyurethane, and the wetting agent It is a silicone wetting agent, and the curing agent is a sulfonic acid curing agent. The material consumption of the surface treatment agent layer is 2.4g / m 2 .

[0046] The material of the hot melt adhesive layer is made by mixing 90 parts of ethylene-vinyl acetate polymer, 1.5 parts of initiator, 1.5 parts of antioxidant, 2 parts of plasticizer, 3 parts of paraffin and 2 p...

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Abstract

The invention discloses a PTE pre-formed coating film for preventing surface wetting tension attenuation of a film and a processing method of the PTE pre-formed coating film and relates to the technical field of packaging materials. The PTE pre-formed coating film comprises a hot melt adhesive layer, a primer agent layer, a base material film layer and a surface treating agent layer which are sequentially arranged from bottom to top. The surface treating agent layer is prepared from the following components in parts by weight: 5-15 parts of waterborne polyurethane, 0.5-2.5 parts of a wetting agent, 0.5-2.5 parts of a curing agent, and 80-95 parts of water. According to the PTE pre-formed coating film of the invention, the surface of the base material film layer is coated with the surfacetreating agent layer, so that corona treatment does not need to be performed on the film, an ideal adhesion effect can be achieved; and the initial dyne value of the PTE pre-formed coating film is close to the dyne value of a pre-formed coating film subjected to corona treatment, but the dyne value attenuation amount of the pre-formed coating film is very low along with the prolonging of the placement time of the pre-formed coating film, the wetting tension of the surface of the film is good, and printing quality is good.

Description

technical field [0001] The invention relates to the technical field of packaging materials, in particular to a PTE pre-coating film and a processing method thereof for preventing film surface wetting tension attenuation. Background technique [0002] PET film, that is, polyethylene terephthalate film, is a barrier polymer material with the best comprehensive performance. It has excellent physical and chemical properties, low water absorption, high dimensional stability, and good barrier properties. , acid and oil resistance, widely used in food, beverage and other packaging. Pre-coated film refers to the process of gluing and rewinding the plastic film in advance, and then compounding it with paper prints. It is a very important flexible packaging material for printed products. This product has safety, environmental protection, operation Convenience, high efficiency and energy saving, excellent performance and other characteristics, its market share is gradually increasing....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/25C09J7/35C09J7/50C09J123/08C09J11/08C09J11/06C08J7/04C08L67/02C09D175/06C09D7/63
CPCC08J2367/02C08J2475/06C09D175/06C09J11/06C09J11/08C09J123/0853C09J2423/04C09J2467/006C09J2479/023C09D7/63C09J7/255C09J7/35C09J7/50C08J7/0427C08L91/06C08L93/04C08L57/02C08K5/13C08K5/12C08K5/54
Inventor 刘靠靠刘昌民
Owner ANHUI GUOFENG PLASTIC
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