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A kind of wine cellar lining cast polypropylene film and preparation method thereof

A technology of casting polypropylene and polypropylene, which is applied in the direction of chemical instruments and methods, flat products, and other household appliances, and can solve problems such as wine pollution, unsuitable films, and affecting the performance of polypropylene films.

Active Publication Date: 2020-10-27
浙江大汇新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The impact resistance of the polypropylene film material prepared by the above scheme is good, but the raw material contains plasticizer, and the plasticizer is very soluble in alcohol. If the film is used in the wine cellar, it will easily cause wine quality pollution, on the other hand, it is easy to affect the performance of polypropylene film, so the film is not suitable for the environment of wine cellar

Method used

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  • A kind of wine cellar lining cast polypropylene film and preparation method thereof
  • A kind of wine cellar lining cast polypropylene film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A wine cellar liner cast polypropylene film such as figure 1 As shown, it includes a heat-sealing layer 1 , a core layer 2 and a corona layer 3 , wherein the core layer 2 is arranged between the heat-sealing layer 1 and the corona layer 3 . The thickness of the film is 60 μm, of which the heat-sealing layer 1 accounts for 20%, the core layer 2 accounts for 60%, and the corona layer 3 accounts for 20%.

[0040] The raw materials of the heat-sealing layer 1 and the corona layer 3 are all selected from modified polypropylene made of 88 parts of polypropylene, 10 parts of POE plastic and 2 parts of polyisobutylene.

[0041] The raw material of the core layer 2 is a blend of 60wt% modified polypropylene and 40wt% ethylene-propylene copolymer, wherein the modified polypropylene is made from 88 parts of polypropylene, 10 parts of POE plastic and 2 parts of polyisobutylene; ethylene-propylene copolymer The content of ethylene in the product is 15wt%.

[0042] The preparation ...

Embodiment 2

[0045] A wine cellar liner cast polypropylene film such as figure 1 As shown, it includes a heat-sealing layer 1 , a core layer 2 and a corona layer 3 , wherein the core layer 2 is arranged between the heat-sealing layer 1 and the corona layer 3 . The thickness of the film is 70 μm, of which the heat-sealing layer 1 accounts for 15%, the core layer 2 accounts for 65%, and the corona layer 3 accounts for 20%.

[0046] The raw materials of the heat-sealing layer 1 and the corona layer 3 are all selected from modified polypropylene made of 93 parts of polypropylene, 6 parts of POE plastic and 1 part of polyisobutylene.

[0047] The raw material of the core layer 2 is a blend of 70wt% modified polypropylene and 30wt% ethylene-propylene copolymer, wherein the modified polypropylene is made from 93 parts of polypropylene, 6 parts of POE plastic and 1 part of polyisobutylene; ethylene-propylene copolymer The content of ethylene in the product is 15wt%.

[0048] The preparation of t...

Embodiment 3

[0051]A wine cellar liner cast polypropylene film such as figure 1 As shown, it includes a heat-sealing layer 1 , a core layer 2 and a corona layer 3 , wherein the core layer 2 is arranged between the heat-sealing layer 1 and the corona layer 3 . The thickness of the film is 80 μm, of which the heat-sealing layer 1 accounts for 20%, the core layer 2 accounts for 65%, and the corona layer 3 accounts for 15%.

[0052] The raw materials of the heat-sealing layer 1 and the corona layer 3 are all selected from modified polypropylene made of 90 parts of polypropylene, 8 parts of POE plastic and 2 parts of polyisobutylene.

[0053] The raw material of the core layer 2 is a blend of 80wt% modified polypropylene and 20wt% ethylene-propylene copolymer, wherein the modified polypropylene is made from 90 parts of polypropylene, 8 parts of POE plastic and 2 parts of polyisobutylene; ethylene-propylene copolymer The content of ethylene in the product is 15wt%.

[0054] The preparation of ...

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Abstract

The invention relates to casting polypropylene film for cellar lining and a preparation method thereof which relates to the technical field of polypropylene film. The casting polypropylene film for the cellar lining is composed of a heat sealing layer, a core layer and a corona layer; the heat sealing layer is made of modified polypropylene; the core layer is made of blended raw materials of the modified polypropylene and ethylene propylene copolymers, wherein the ethylene propylene copolymers account for 20%-40%; the corona layer is made of the modified polypropylene; and the film is preparedfrom three-layer casting coextrusion technology. POE plastic and polyisobutylene are utilized to modify polypropylene, which helps to improve the impact resistance and the toughness of finished filmin a low temperature environment; the finished film does not contain a plasticizer, and is more suitable for use in a cellar environment, so that the finished film also has excellent stability in an alcoholic environment; and the ethylene propylene copolymers and the modified polypropylene are compounded, so that the core layer has better toughness, and further the finished film has better toughness and impact resistance.

Description

technical field [0001] The invention relates to a casting polypropylene film, in particular to a casting polypropylene film lining a wine cellar and a preparation method thereof. Background technique [0002] Casting is a plastic molding technology, which is to spread the solution or melt of high molecular polymer directly on the steel belt or cooling steel roll through the scraper or extruder die to form a certain thickness of unoriented film. Cast polypropylene film is an unstretched flat-die extruded film produced by single-layer or multi-layer co-extrusion melt casting and quenching of polypropylene resin. [0003] The required temperature of the wine cellar is generally 10-14°C. Ordinary cast polypropylene films have become brittle at this temperature, which affects the impact resistance of polypropylene films. In order to solve this problem, plasticizers, that is, plasticizers, are often added to film-making materials in the market to improve the flexibility of polyp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/32B32B27/06B32B27/08B32B27/30C08J5/18C08L23/12C08L23/08C08L23/20C08L23/16B29C48/18B29C48/08B29L7/00
CPCB29L2007/00B32B27/08B32B27/30B32B27/32B32B2307/558
Inventor 柳金亭蒋维汪学志邓德强
Owner 浙江大汇新材料有限公司
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