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Preparation method of antioxidant food packaging film

A food packaging film, anti-oxidation technology, applied in chemical instruments and methods, biological packaging, sustainable packaging industry, etc., can solve the problems of low tensile strength, high oxygen transmission rate, high water vapor transmission rate, shedding, etc. Low excess, good puncture resistance, good barrier effect

Active Publication Date: 2022-05-27
SHANDONG AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] CN106368076A discloses a high-barrier composite food packaging film and its preparation method. The elongation at break is 145%, but the tensile strength is low, the highest is only 8Mpa, and it has certain puncture resistance. However, its oxygen transmission rate, water vapor High penetration rate, unable to achieve anti-oxidation effect
[0005] CN107336495A discloses a food packaging film with fresh-keeping and air-tightness functions and its preparation method. The food packaging film provided has good fresh-keeping and air-tightness functions at the same time, but it does not disclose its oxygen transmission rate, water vapor transmission rate, etc. Excess indicators, also undisclosed in terms of their strength
CN112795248A discloses a high-barrier PVA coating solution and its application. The prepared coating solution can be coated on the surface of PE packaging film, which can effectively reduce the water vapor transmission rate of the packaging bag, and can effectively prevent oxygen in the external environment from entering the PE packaging film. In the packaging bag, but the strength index of the film cannot be improved after coating, and it will fall off after long-term use
[0007] (1) The comprehensive tensile properties of existing food packaging films are poor;

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] (1) Preparation of outer film pellets

[0044] Mix guar gum, dicyclopentadienyl zirconium dichloride, epoxy resin, and acrylic emulsion into the reactor, react at 85°C for 90 minutes, add 2,5-dimethyl-2,5-di-tert-butyl Hexane oxide and silica were kept at 80°C for 60min, 1,2-propanediol, triethanolamine and tert-butyl peroxy tert-butyl peroxy were added at 80°C for 120min, and then melt-blended with BOPP particles to obtain external film pellets;

[0045] The mass ratio of the guar gum, dicyclopentadienyl zirconium dichloride, epoxy resin, and acrylic emulsion is 100:1:7:10;

[0046] The mass ratio of the 2,5-dimethyl-2,5 di-tert-butyl hexane peroxide to guar gum is 1:150;

[0047] The mass ratio of the silicon dioxide and guar gum is 1:7;

[0048] The mass ratio of described 1,2-propanediol and guar gum is 1:5;

[0049] The mass ratio of described triethanolamine and guar gum is 1:10;

[0050] The mass ratio of described tert-butyl peroxy tert-valerate and guar gu...

Embodiment 2

[0075] (1) Preparation of outer film pellets

[0076] Mix guar gum, dicyclopentadienyl zirconium dichloride, epoxy resin, and acrylic emulsion into the reaction kettle, react at 80°C for 100 minutes, add 2,5-dimethyl-2,5-di-tert-butyl Hexane oxide and silica were kept at 75°C for 70min, 1,2-propanediol, triethanolamine and tert-butyl peroxy tert-butyl peroxy were added at 75°C and kept at 75°C for 130min, and then melt-blended with BOPP particles to obtain external film pellets;

[0077] The mass ratio of the guar gum, dicyclopentadienyl zirconium dichloride, epoxy resin and acrylic emulsion is 80:0.8:6:8;

[0078] The mass ratio of the 2,5-dimethyl-2,5 di-tert-butyl hexane peroxide to guar gum is 1:140;

[0079] The mass ratio of described silicon dioxide and guar gum is 1:6;

[0080] The mass ratio of described 1,2-propanediol and guar gum is 1:4.5;

[0081] The mass ratio of described triethanolamine and guar gum is 1:9;

[0082] The mass ratio of described tert-butyl ...

Embodiment 3

[0107] (1) Preparation of outer film pellets

[0108] Mix guar gum, dicyclopentadienyl zirconium dichloride, epoxy resin, and acrylic emulsion into the reaction kettle, react at 90°C for 80 minutes, add 2,5-dimethyl-2,5-di-tert-butyl Hexane oxide and silica were kept at 85°C for 50min, 1,2-propanediol, triethanolamine and tert-butyl peroxy tert-butyl peroxy were added at 85°C and kept at 85°C for 100min, and then melt-blended with BOPP particles to obtain an external film pellets;

[0109] The mass ratio of the guar gum, dicyclopentadienyl zirconium dichloride, epoxy resin, and acrylic emulsion is 120:1.2:9:12;

[0110] The mass ratio of the 2,5-dimethyl-2,5 di-tert-butyl hexane peroxide to guar gum is 1:160;

[0111] The mass ratio of described silicon dioxide and guar gum is 1:8;

[0112] The mass ratio of described 1,2-propanediol and guar gum is 1:5.5;

[0113] The mass ratio of described triethanolamine and guar gum is 1:11;

[0114] The mass ratio of described tert-...

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Abstract

The invention discloses a preparation method of an antioxidant food packaging film. The preparation method comprises the steps of preparing outer film material particles, preparing inner film material particles and preparing the packaging film. The prepared packaging film is good in barrier property and low in permeation rate, the permeation rate of oxygen is 0.03-0.04 cm < 3 > / (m < 2 >. 24h. 0.1 Mpa), and the permeation rate of carbon dioxide is 0.05-0.06 cm < 3 > / (m < 2 >. 24h. 0.1 Mpa). The prepared packaging film is low in water vapor permeation rate, and the water vapor permeation rate is 0.35-0.38 g / (m < 2 >. 24h).

Description

technical field [0001] The invention relates to a preparation method of an antioxidant food packaging film, and belongs to the technical field of food packaging. Background technique [0002] Food packaging film plays a role in protecting food. At present, the most widely used food and drug composite packaging film in China is made of ordinary polypropylene film or polyethylene film. Popular in the packaging industry. However, the mechanical strength of the composite packaging film is poor, and it is often prone to tearing, tensile deformation and puncture, which further limits the further use of the composite packaging film. at the same time [0003] As a food packaging film, it is necessary to protect the freshness of food, and there are certain requirements for oxygen transmission and water vapor transmission, so that food can be stored for a long time without deterioration. [0004] CN106368076A discloses a high-barrier composite food packaging film and a preparation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/32
CPCB32B27/32B32B27/08B32B27/36B32B7/12B32B37/12B32B37/06B32B37/10C08J5/18B32B2307/50B32B2307/5825B32B2307/7244B32B2307/7246B32B2553/00C08J2323/12C08J2405/00C08J2463/00C08J2433/00C08K5/0091C08K3/36C08J2367/02C08J2467/02C08K7/06C08K7/24C08K2201/011Y02W90/10
Inventor 张永泽侯汉学
Owner SHANDONG AGRICULTURAL UNIVERSITY