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BOPP film capable of being directly used for paper-plastic compounding and preparation method thereof

A paper-plastic composite and film technology, applied in chemical instruments and methods, synthetic resin layered products, layered products, etc., can solve the problem of increasing the energy consumption of the pre-coating film process, difficult to control the processing process, and affecting the brightness of the pre-coating film, etc. problem, to achieve high-tech anti-counterfeiting function, beautiful appearance effect, improve the effect of anti-scratch performance

Pending Publication Date: 2020-12-25
ANHUI GUOFENG PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Roughly divided into two types: instant coating process and pre-coating process, that is, the volatilization and overflow of toxic substance benzene in the coating process, it is easy to form air bubbles between the film and paper to affect the appearance, the adhesive strength is low, and there are safety hazards in the production process , has been gradually replaced by the pre-coating process, but most of the films used in the pre-coating process currently have a primer, that is, the primer is coated on the surface of the base film, dried and then combined with a hot melt adhesive
In the later stage of the product, the primer will precipitate and pollute the film surface, and the primer will also affect the brightness of the pre-coated film. In addition, the application of the primer will increase the energy consumption of the pre-coated film process, making the processing process difficult to control

Method used

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  • BOPP film capable of being directly used for paper-plastic compounding and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0026] A BOPP film that can be directly used for paper-plastic composite proposed by the present invention is composed of an upper surface layer, a core layer and a lower surface layer; in terms of the total thickness of the BOPP film, the thickness ratios of each layer are: the upper surface layer 15%, the core layer 70% %, lower surface layer 15%.

[0027] The material of the upper surface layer is composed of the following components by weight percentage: homopolypropylene 90%, anti-adhesive masterbatch 10%; wherein, the anti-adhesive masterbatch is composed of homopolypropylene and hollow ceramic microspheres with a particle size of 2 μm ;

[0028] The material of the core layer is composed of homopolypropylene;

[0029] The material of the lower surface layer is composed of the following raw materials in weight percentage: 40% of ethylene-ethyl acrylate copolymer, and 60% of low-density polyethylene; wherein, the low-density polyethylene is bimodal linear low-density pol...

Embodiment 2

[0036] A BOPP film that can be directly used for paper-plastic composite proposed by the present invention is composed of an upper surface layer, a core layer and a lower surface layer; in terms of the total thickness of the BOPP film, the thickness ratios of each layer are: 5% for the upper surface layer and 90% for the core layer %, lower surface layer 5%.

[0037] The material of the upper surface layer is composed of the following components by weight percentage: homopolypropylene 97%, anti-adhesive masterbatch 3%; wherein, the anti-adhesive masterbatch is composed of homopolypropylene and hollow ceramic microbeads with a particle size of 1 μm ;

[0038] The material of the core layer is composed of homopolypropylene;

[0039] The material of the lower surface layer is composed of the following raw materials in weight percentage: 65% of ethylene-ethyl acrylate copolymer, and 35% of low-density polyethylene; wherein, the low-density polyethylene is bimodal linear low-densi...

Embodiment 3

[0046] A BOPP film that can be directly used for paper-plastic composite proposed by the present invention is composed of an upper surface layer, a core layer and a lower surface layer; in terms of the total thickness of the BOPP film, the thickness ratios of each layer are: 10% for the upper surface layer and 80% for the core layer %, lower surface layer 10%.

[0047] The material of the upper surface layer is composed of the following components by weight percentage: homopolypropylene 95%, anti-adhesive masterbatch 5%; wherein, the anti-adhesive masterbatch is composed of homopolypropylene and hollow ceramic microbeads with a particle size of 3 μm ;

[0048] The material of the core layer is composed of homopolypropylene;

[0049]The material of the lower surface layer is composed of the following raw materials in weight percentage: 50% of ethylene-ethyl acrylate copolymer, and 50% of low-density polyethylene; wherein, the low-density polyethylene is bimodal linear low-dens...

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Abstract

The invention discloses a BOPP film capable of being directly used for paper-plastic compounding and a preparation method thereof, and relates to the technical field of films. The BOPP film comprisesan upper surface layer, a core layer and a lower surface layer. The upper surface layer is made of homo-polypropylene and anti-sticking master batch, and the anti-sticking master batch is composed ofhollow ceramic microbeads and homo-polypropylene; the core layer is made of homo-polypropylene; and the lower surface layer is made of an ethylene-ethyl acrylate copolymer and low-density polyethylene. The BOPP film prepared by the method is good in brightness, and can be directly compounded with paper under a hot pressing condition, so that a procedure and a tool for applying a hot melt adhesiveare omitted, and the pollution of a primer to the environment is avoided; and besides, in the preparation process, the core layer melt is distributed into a plurality of die heads, and a multi-layer co-extrusion structure is adopted, so that the requirements of production equipment for different film thicknesses can be flexibly met, and the burden of the equipment is reduced.

Description

technical field [0001] The invention relates to the technical field of films, in particular to a BOPP film which can be directly used for paper-plastic composite and a preparation method thereof. Background technique [0002] Film lamination, also known as "laminated plastic", "mounted glue", "film sticking", etc., is a processing technology that combines plastic film and paper products with heat and pressure to form a paper-plastic product. The coated printed matter has a smoother and brighter surface due to the addition of a thin and transparent plastic film on the surface. The transparent brightness of the film is high, the graphic color is more vivid, full of three-dimensional effect, and the gloss and fastness of paper products are improved. , At the same time, it also plays the role of waterproof, antifouling, wear resistance, pleat resistance, chemical corrosion resistance, etc. It is especially suitable for the packaging of green food and other commodities, and can a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B27/06B32B27/32B32B27/30B29C48/16B29C48/18
CPCB32B27/08B32B27/32B32B27/308B32B27/30B29C48/16B29C48/18
Inventor 王恒煜王红兵张少伟张涛陈铸红
Owner ANHUI GUOFENG PLASTIC
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