High-barrier food film and preparation method thereof

A high-barrier, food technology, applied in the directions of packaged food, chemical instruments and methods, layered products, etc., can solve the problems of difficult tearing of plastic wrap, affecting the uniformity of force on plastic wrap, and achieve reduced possibility and excellent tearability. The effect of improving the tearability

Inactive Publication Date: 2018-05-18
邱诗俊
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the plastic box is used to store oily food such as lo-mei, the oil will adhere to the PE on one side, and the oil will gradually penetrate into the plastic wrap, affecting the force uniformity of the plastic wrap, so that when the plastic wrap is torn off There are situations that are difficult to tear and endless

Method used

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  • High-barrier food film and preparation method thereof
  • High-barrier food film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1: a kind of high barrier food film, it is prepared by following method:

[0033] Treat A1 / B1 / C1 / A2 / B2 / C2 / B3 / A3 / B4 according to the process of casting film, and after treatment, attach the PP non-woven fabric layer to B4 while it is hot, and cool it after hot pressing, that is, have to;

[0034] A1: PP with a crystallinity of 71% and a thickness of 0.016mm;

[0035] B1: 0.8wt% EVA is added, and the thickness is 0.006mm;

[0036] C1: PVC, the thickness is 0.012 mm;

[0037] A2: PP with a crystallinity of 68% and a thickness of 0.016mm;

[0038] B2: 1.2wt% EVOH is added, and the thickness is 0.006mm;

[0039] C2: PVC, the thickness is 0.012mm;

[0040] B3: 0.8wt% EVA is added, and the thickness is 0.006mm;

[0041] A3: PP with a crystallinity of 74% and a thickness of 0.018mm;

[0042] B4: 1.0wt% EVA is added, and the thickness is 0.008mm;

[0043] D: PP non-woven fabric with a thickness of 0.018mm.

Embodiment 2

[0044] Embodiment 2: a kind of high barrier food film, the difference with embodiment 1 is,

[0045] The thicknesses of A1 / B1 / C1 / A2 / B2 / C2 / B3 / A3 / B4 / D are: 0.015, 0.005, 0.010, 0.015, 0.005, 0.010, 0.005, 0.015, 0.005 and 0.015mm respectively.

Embodiment 3

[0046] Embodiment 3: a kind of high barrier food film, the difference with embodiment 1 is,

[0047] The thicknesses of A1 / B1 / C1 / A2 / B2 / C2 / B3 / A3 / B4 / D are: 0.020, 0.008, 0.015, 0.020, 0.008, 0.015, 0.008, 0.020, 0.008 and 0.020mm respectively.

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Abstract

The invention discloses a high-barrier food film and a preparation method thereof. The structure expression of the food film is A1 / B1 / C1 / A2 / B2 / C2 / B3 / A3 / B4 / D, wherein A1, A2 and A3 are PP (polypropylene) layers, and degree of crystallinity of PP is higher than 65%; B1, B3 and B4 are EVA (ethylene vinyl acetate copolymer) layers, and B2 is an EVOH (ethylene-vinyl alcohol copolymer) layer; C1 and C2are PVC(polyvinyl chloride) layers; D is a PP non-woven fabric layer; thicknesses of A1 / B1 / C1 / A2 / B2 / C2 / B3 / A3 / B4 / D are 0.015-0.020 mm, 0.005-0.008 mm, 0.010-0.015 mm, 0.015-0.020 mm, 0.005-0.008 mm, 0.010-0.015 mm, 0.005-0.008 mm, 0.015-0.020 mm, 0.005-0.008 mm and 0.015-0 020 mm respectively. The food film is suitable for storage of oily food.

Description

technical field [0001] The invention relates to a high-barrier food film and a preparation method thereof. Background technique [0002] With the improvement of people's living standards, food safety issues are getting more and more attention. In the process of food production, the performance of packaging materials often has a great influence on the shelf life of food. Moisture, microorganisms and some gases in the air affect the shelf life of food, so isolating food from air is a necessary condition for packaging materials. [0003] The Chinese patent with the authorized announcement number CN103465580B and the authorized announcement date of April 22, 2015 discloses a multi-layer composite plastic wrap, which has a PE / EVOH / PA / EVOH / PE five-layer structure. [0004] When the plastic wrap is hot-pressed into the plastic box, due to the symmetrical structure of the plastic wrap in the prior art, relatively speaking, the combination of the outer layer PE and the plastic box ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B27/30B32B27/32B32B27/12B32B27/02B32B27/18B32B37/06B32B37/10B65D65/40
CPCB32B27/08B32B27/12B32B27/18B32B27/304B32B27/306B32B27/32B32B37/06B32B37/10B32B2262/0253B32B2439/70B65D65/40
Inventor 邱诗俊
Owner 邱诗俊
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