Toughened cooking film and preparation method thereof

A cooking film and toughening technology, applied in chemical instruments and methods, other household utensils, packaging, etc., can solve the problem that the cooking film cannot meet market demand, achieve excellent fresh-keeping effect, good flexibility, and increase the speed of machine packaging Effect

Inactive Publication Date: 2018-05-18
HUBEI DEWEI PACKAGING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a toughened cooking film and its preparation method to solve the problem that the existing cooking film cannot meet the market demand

Method used

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  • Toughened cooking film and preparation method thereof

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Effect test

Embodiment 1

[0025] Such as figure 1 As shown, the present invention provides a toughened retort film, which is composed of a heat-sealing layer 1, a core layer 2, a toughening layer 3, and a corona layer 4, which are sequentially stacked and cast four-layer co-extrusion; The mass percentages of sealing layer, core layer, toughening layer and corona layer are respectively: 18%, 27%, 37%, 18%;

[0026] The material of the heat-sealing layer is formed by mixing ternary random copolymerized polypropylene (PP) resin, ethylene-vinyl acetate copolymer (EVA) and modified masterbatch, each raw material accounts for the mass percentage of the heat-sealing layer They are: ternary random copolymerization polypropylene (PP) resin 50%, ethylene-vinyl acetate copolymer (EVA) 40%, modified masterbatch 10%,;

[0027] The material of the core layer is formed by mixing wire-drawing grade polypropylene resin, ethylene-propylene elastomer and metallocene polyethylene (linear), and the mass percentages of eac...

Embodiment 2

[0036] Such as figure 1 As shown, the present invention provides a toughened retort film, which is composed of a heat-sealing layer 1, a core layer 2, a toughening layer 3, and a corona layer. The mass percentages of heat-sealing layer, core layer, toughening layer and corona layer are respectively: 17%, 27%, 38%, 18%;

[0037] The material of the heat-sealing layer is formed by mixing ternary random copolymerized polypropylene (PP) resin, ethylene-vinyl acetate copolymer (EVA) and modified masterbatch, each raw material accounts for the mass percentage of the heat-sealing layer They are: ternary random copolymerization polypropylene (PP) resin 40%, ethylene-vinyl acetate copolymer (EVA) 40%, modified masterbatch 20%,;

[0038] The material of the core layer is formed by mixing wire-drawing grade polypropylene resin, ethylene-propylene elastomer and metallocene polyethylene (linear), and the mass percentages of each raw material in the core layer are: wire-drawing grade polyp...

Embodiment 3

[0050] Such as figure 1 As shown, the present invention provides a toughened retort film, which is composed of a heat-sealing layer 1, a core layer 2, a toughening layer 3, and a corona layer. The mass percentages of heat-sealing layer, core layer, toughening layer and corona layer are respectively: 18%, 26%, 38%, 18%;

[0051] The material of the heat-sealing layer is formed by mixing ternary random copolymerized polypropylene (PP) resin, ethylene-vinyl acetate copolymer (EVA) and modified masterbatch, each raw material accounts for the mass percentage of the heat-sealing layer They are: ternary random copolymerization polypropylene (PP) resin 40%, ethylene-vinyl acetate copolymer (EVA) 50%, modified masterbatch 10%,;

[0052] The material of the core layer is formed by mixing wire-drawing grade polypropylene resin, ethylene-propylene elastomer and metallocene polyethylene (linear), and the mass percentages of each raw material in the core layer are: wire-drawing grade polyp...

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Abstract

The invention belongs to the technical field of cooking films, and relates to a toughened cooking film, which is formed by carrying out sequential lamination arrangement casting co-extrusion on a heatsealing layer, a core layer, a toughening layer and a corona layer, wherein the raw materials of the heat sealing layer comprise, by mass, 40-50% of a ternary random copolymerized polypropylene resin, 40-50% of an ethylene-vinyl acetate copolymer, and 10-20% of a modified master batch, the raw materials of the core layer comprise, by mass, 30-50% of a drawing-grade polypropylene resin, 25-35% ofan ethylene-propylene elastomer, and 25-35% of metallocene polyethylene, and the raw materials of the toughening layer comprise, by mass, 65-75% of a polypropylene resin, 5-10% of an ethylene-propylene elastomer, 15-25% of high density polyethylene, 5-10% of a polyamide resin, and 0.01-0.2% of maleic anhydride. The toughened cooking film of the present invention has advantages of excellent puncture resistance, good barrier property and high-temperature resistance.

Description

technical field [0001] The invention belongs to the technical field of cooking membranes, and in particular relates to a toughened cooking membrane and a preparation method thereof. Background technique [0002] Retort film is a plastic film used for thermal processing. At present, the retort film used in the food packaging industry is mostly made of polypropylene, but due to the characteristics of the polypropylene raw material itself, the retort film has many deficiencies in physical and chemical properties. After bag forming and packaging, due to the friction between the retort film and the product, there will be defects such as broken bags and scratches. The puncture resistance and tear resistance of the existing cooking film are poor, and the physical and chemical performance indicators are relatively low. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a toughened cooking film and its preparation method, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B27/06B32B27/18B32B27/30B32B27/32B32B25/08B32B25/14B29C47/00B29C47/06B65D65/40C08L23/14C08L23/12C08L23/16C08L23/06C08L77/00C08L23/08C08K5/1539C08K5/20
CPCB32B27/08B29C48/022B29C48/08B29C48/21B32B25/08B32B25/14B32B27/18B32B27/306B32B27/32B32B27/327B32B2250/24B32B2270/00B32B2307/306B32B2307/31B32B2307/558B32B2553/00B65D65/40C08L23/12C08L23/14C08L2203/16C08L2205/02C08L2205/035C08L2207/062C08L2207/066C08L23/0853C08L23/06C08L23/0815C08K5/20C08L23/16C08L77/00C08K5/1539
Inventor 蔡岩胜蔡扬龙刘桂华陈小锋
Owner HUBEI DEWEI PACKAGING TECH
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