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BOPET film for metal compounding and preparation method thereof

A metal composite and film technology, applied in the field of plastic film manufacturing, can solve the problems of lack of in-depth research on BOPET film, immature products and application markets, etc., to improve can-making efficiency, good composite fastness, and wide application prospects. Effect

Active Publication Date: 2019-01-22
ANHUI GUOFENG PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Domestic production of BOPET films for metal composites lacks in-depth research, and there is no mature product and application market

Method used

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  • BOPET film for metal compounding and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0022] A BOPET film for metal composites, consisting of an upper surface layer, a core layer and a lower surface layer, the core layer is composed of the following components: 60% PET polyester chips, 20% PBT polyester chips and 20% neopentyl glycol (NPG) copolymerized modified PET polyester chips; the upper surface layer is an anti-adhesive layer, which is composed of 40% bottle-grade PET polyester chips and 60% PET polyester anti-adhesive masterbatch; the lower surface layer is a functional layer, composed of 100% Methyl methacrylate (MMA) graft copolymerized modified PETG heat-sealed chips (PETG heat-sealed chips are PETG polyester chips with heat-sealed properties).

[0023] Among them, the thickness of the upper surface layer accounts for 10%-12.5% ​​of the total thickness of the film, the thickness of the lower surface layer accounts for 16.7%-21%, and the thickness of the core layer accounts for 66.5%-73.3%.

[0024] The preparation method of above-mentioned a kind of m...

Embodiment 2

[0034] A BOPET film for metal composite, consisting of an upper surface layer, a core layer and a lower surface layer, the core layer is composed of the following components: 70% PET polyester chips, 15% PBT polyester chips and 15% neopentyl glycol (NPG) copolymerized modified PET polyester chips; the upper surface layer is an anti-adhesive layer, which is composed of 50% bottle-grade PET polyester chips and 50% PET polyester anti-adhesive masterbatch; the lower surface layer is a functional layer, composed of 100% Methyl methacrylate (MMA) graft copolymerization modified PETG heat-sealed chip composition.

[0035] Among them, the thickness of the upper surface layer accounts for 8.3%-9.4% of the total thickness of the film, the thickness of the lower surface layer accounts for 13.9%-15.6%, and the thickness of the core layer accounts for 75%-77.8%.

[0036] The preparation method of above-mentioned a kind of metal composite BOPET thin film, comprises the following steps:

[...

Embodiment 3

[0046]A BOPET film for metal composites, consisting of an upper surface layer, a core layer and a lower surface layer, the core layer is composed of the following components: 80% PET polyester chips, 10% PBT polyester chips and 10% neopentyl glycol (NPG) copolymerized modified PET polyester chips; the upper surface layer is an anti-adhesive layer, composed of 60% bottle-grade PET polyester chips and 40% PET polyester anti-adhesive masterbatch; the lower surface layer is a functional layer, composed of 100% Methyl methacrylate (MMA) graft copolymerization modified PETG heat-sealed chip composition.

[0047] Among them, the thickness of the upper surface layer accounts for 7.5%-7.9% of the total thickness of the film, the thickness of the lower surface layer accounts for 12.5%-13.2%, and the thickness of the core layer accounts for 78.9%-80%.

[0048] The preparation method of above-mentioned a kind of metal composite BOPET thin film, comprises the following steps:

[0049] 1) ...

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Abstract

The invention relates to a BOPET film for metal compounding and a preparation method thereof. The BOPET film for metal compounding consists of an upper surface layer, a core layer and a lower surfacelayer. The core layer is composed of: 60%-80% of PET polyester chips, 10%-20% PBT polyester chips and 10%-20% of neopentylene glycol copolymerization modified PET polyester chips. The upper surface layer is composed of: 40%-60% of bottle grade PET polyester chips and 40%-60% of PET polyester anti-stick masterbatch. The lower surface layer is methyl methacrylate graft copolymerization modified PETGheat-seal chip. Compared with the traditional BOPET films and BOPET heat-seal films, the BOPET film for metal compounding provided by the invention has excellent performance in terms of heat sealing,fracture nominal strain, heat shrinkage, etc., and can achieve good compounding fastness after hot lamination with metals. Through hot pressing lamination with iron plates, steel plates, aluminum plates and other metals, the BOPET film can be used for production and manufacturing of chemical tanks, food cans and capacitors. Compared with the traditional iron printing process, the products produced by thermal lamination of the BOPET film with metals have more advantages in performance, material cost, production cost, environmental protection, energy consumption and other aspects.

Description

technical field [0001] The invention relates to the technical field of plastic film manufacturing, in particular to a metal composite BOPET film and a preparation method thereof. Background technique [0002] PET film is a film with comprehensive performance. Traditional PET film or PET heat-sealing film is mainly used in packaging and construction fields, and the current market supply exceeds demand. The main application field of BOPET film for metal composite is to heat-bond with metal plates or sheets such as iron and aluminum, and be used in the production and manufacture of canned products and capacitor shells. The BOPET film is required to have good heat sealing performance, impact resistance, nominal strain at fracture and good composite fastness with the metal surface. [0003] At present, foreign countries produce BOPET films for metal lamination, which are mainly used in the production of coated iron and compounded with iron, and the production technology is main...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L51/08C08J5/18B32B27/36B32B27/38B32B27/06B32B27/08B32B33/00
CPCB32B27/08B32B27/308B32B27/36B32B33/00B32B2307/31B32B2307/558B32B2307/736C08J5/18C08J2351/08C08J2367/02C08J2467/02C08L51/08C08L67/02C08L2205/025C08L2205/03
Inventor 张少伟王红兵
Owner ANHUI GUOFENG PLASTIC
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