Fruit-preserving green packing material with ethylene adsorption function and preparation method thereof

A packaging material and functional technology, applied in the fields of fruit and vegetable preservation, transportation and packaging, food preservation, etc., can solve the problems affecting the strength of corrugated boxes and low ethylene adsorption efficiency

Active Publication Date: 2011-02-09
大家智合(北京)网络科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ethylene absorbents such as potassium permanganate can prevent the accumulation of ethylene in the packaging bag, but potassium permanganate can easily dissolve the water in the environment and cause the fruit to be dyed, and potassium permanganate is a kind of chemical, which should not come

Method used

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  • Fruit-preserving green packing material with ethylene adsorption function and preparation method thereof
  • Fruit-preserving green packing material with ethylene adsorption function and preparation method thereof
  • Fruit-preserving green packing material with ethylene adsorption function and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 5 parts of molecular sieve with a Si / Al ratio of 40 and 95 parts of LDPE (low density polyethylene) resin were melt blended to form a film, and the mechanical properties of the film were measured. Then cut and heat seal into 6 fresh-keeping bags of 300*300mm. Put 10 burnt fruits in each plastic bag, take out 10 bananas in one fresh-keeping bag one day later to evaluate the fresh-keeping performance test; take out 10 bananas in the other fresh-keeping bag to analyze the fresh-keeping effect on the second day; take out every day A bag of bananas was tested until the sixth day.

Embodiment 2

[0026] Two parts of molecular sieve with a Si / Al ratio of 5 were melt-blended with 98 parts of LDPE resin to form a film, and the mechanical properties of the film were measured. Then cut and heat seal into 6 fresh-keeping bags of 300*300mm. Hold burnt fruit 10 in each plastic bag, the test of fresh-keeping effect is with embodiment 1.

Embodiment 3

[0028] 10 parts of molecular sieve with a Si / Al ratio of 10 and 90 parts of LDPE resin were melt-blended to form a film, and the mechanical properties of the film were measured. Then cut and heat seal into 6 fresh-keeping bags of 300*300mm. Hold burnt fruit 10 in each plastic bag, the test of fresh-keeping effect is with embodiment 1.

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PUM

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Abstract

The invention discloses a fruit-preserving green packing material with an ethylene adsorption function and a preparation method thereof, belonging to the field of packing materials. The material comprises 100-90 parts of polyethylene or polypropylene resin by weight and 0.5-10 parts of aluminum silicate molecular sieve by weight, wherein the granularity of the aluminum silicate molecular sieve is 5-100 microns and the silica alumina ratio of the same is 5-100. The preparation method comprises the steps of: firstly preparing the aluminum silicate molecular sieve; then melting and blending the aluminum silicate molecular sieve and the polyethylene or polypropylene resin, and blowing to make thin films. The ethylene adsorption rate of the packing material in the invention reaches 0.25-0.43ml/day.m<2>, and the oxygen transmissivity reaches 1300-4600ml/day.m<2>, therefore, a banana shelf life is prolonged by 25-125%, and the weightlessness is reduced by more than 50%.

Description

technical field [0001] The invention relates to a fresh-keeping green packaging material for fruit, in particular to a green packaging material for fresh-keeping fruit with the function of absorbing ethylene and a preparation method thereof, belonging to the field of packaging materials. Background technique [0002] With the development of the economy and the improvement of living standards, people's dietary life has transitioned from the single type of food and clothing in the past to the current type of diversified nutrition. The demand for fruit is increasing, and the requirements for its freshness are also increasing. Fresh fruits continue to breathe after picking, and the respiration is accompanied by metabolism, water evaporation and ethylene production, which promotes the further ripening of fruits and vegetables; this storage environment also makes it easy for bacteria to breed and multiply rapidly, leading to fruit rot. Ethylene gas is a plant growth hormone. Alt...

Claims

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Application Information

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IPC IPC(8): B65D81/24C08L23/06A23B7/148C08K7/26C08L23/12
Inventor 许文才李东立付亚波曹国荣刘全校罗世永
Owner 大家智合(北京)网络科技股份有限公司
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