Preparation method of freshness-keeping package material capable of strongly replacing gas

A fresh-keeping packaging and gas replacement technology, applied in the field of packaging materials, can solve the problems of unstable air-modified index of fruit and vegetable plastic wrap, weak ability to replace harmful gases, and short fruit and vegetable fresh-keeping time, achieving good fresh-keeping effect and strong two-way adjustment ability , The effect of keeping fresh for a long time

Inactive Publication Date: 2014-05-28
WUXI HUANGSHENG PACKING PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And the atmosphere index of various fruit and vegetable plastic wraps is unstable. 2 and CO 2 The two-way adjustment ability is not good, the harmful gas replacement ability produced by the metabolism of fruits and vegetables in storage is weak, the moisture permeability is poor, and it is easy to condense inside, the time for keeping fruits and vegetables fresh is short, and the fresh-keeping effect is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A preparation method of a fresh-keeping packaging material with strong displacement gas, the packaging material is composed of the following components in parts by weight: 100 parts of low-density polyethylene resin, 35 parts of linear polyethylene resin, 18 parts of ethylene vinyl acetate resin, -200 13 parts of diatomite, 13 parts of -100-+200 mesh kaolin, 2 parts of -300 mesh montmorillonite, 15 parts of vinyl silane A1715, 1.8 parts of glycerol monostearate, 5.5 parts of polyethylene wax; The method is:

[0014] 1) Remove impurities from diatomite, kaolin, and montmorillonite, then crush and sieve to meet the above particle size range;

[0015] 2) Put diatomite, kaolin, montmorillonite, vinyl silane A171, glycerol monostearate, and polyethylene wax into a high-speed kneader in proportion, heat to 105°C and start stirring, stir for 22 minutes, and produce After the material is dried to obtain a composite filler;

[0016] 3) According to the above weight ratio, put ...

Embodiment 2

[0018] A preparation method of a fresh-keeping packaging material with strong displacement gas, the packaging material is composed of the following components in parts by weight: 100 parts of low-density polyethylene resin, 45 parts of linear polyethylene resin, 16 parts of ethylene vinyl acetate resin, -200 15 parts of diatomite, 11 parts of -100-+200 mesh kaolin, 4 parts of -300 mesh montmorillonite, 13 parts of vinyl silane A1713, 2.2 parts of glycerol monostearate, 3.5 parts of polyethylene wax; The method is:

[0019] 1) Remove impurities from diatomite, kaolin, and montmorillonite, then crush and sieve to meet the above particle size range;

[0020] 2) Put diatomaceous earth, kaolin, montmorillonite, vinyl silane A171, glycerol monostearate, and polyethylene wax into a high-speed kneader in proportion, heat to 110°C and start stirring, stir for 18 minutes, and produce After the material is dried to obtain a composite filler;

[0021] 3) According to the above weight ra...

Embodiment 3

[0023] A preparation method of a fresh-keeping packaging material with strong displacement gas, the packaging material is composed of the following components in parts by weight: 100 parts of low-density polyethylene resin, 40 parts of linear polyethylene resin, 17 parts of ethylene vinyl acetate resin, -200 14 parts of diatomite, 12 parts of -100-+200 mesh kaolin, 3 parts of -300 mesh montmorillonite, 14 parts of vinyl silane A1714, 2.0 parts of glycerol monostearate, 4.5 parts of polyethylene wax; The method is:

[0024] 1) Remove impurities from diatomite, kaolin, and montmorillonite, then crush and sieve to meet the above particle size range;

[0025] 2) Put diatomite, kaolin, montmorillonite, vinyl silane A171, glycerol monostearate, and polyethylene wax into a high-speed kneader in proportion, heat to 107°C and start stirring, stir for 20 minutes, and produce After the material is dried to obtain a composite filler;

[0026] 3) According to the above weight ratio, put ...

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PUM

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Abstract

The invention discloses a preparation method of a freshness-keeping package material capable of strongly replacing gas. The preparation method comprises the following steps: 1) purifying diatomite, kaolin and imvite, crushing and screening to ensure that the mixture meets a required particle size range; 2) proportionally putting the diatomite, the kaolin, the imvite, vinylsilane A17, glycerol monostearate and polyethylene wax into a high-speed kneading machine, heating to 105-110 DEG C and stirring for 18-22 minutes, discharging the material and drying to acquire composite filler; 3) blending according to the ratio by weight, evenly blending low-density polyethylene resin, linear polyethylene resin and ethylene-vinyl acetate resin with the composite filler prepared in the step 2) in a blending machine, then graining by using a double screw extrusion machine at a temperature of 145-155 DEG C, and then blow-molding the grains to film freshness keeping package material at a temperature of 165-175 DEG C by using a single-screw extrusion blow molding machine.

Description

technical field [0001] The invention relates to the technical field of packaging materials, in particular to a preparation method of a fresh-keeping packaging material with strong displacement gas. Background technique [0002] After fruits and vegetables are picked, they are still a biological organism during storage, constantly undergoing metabolism and physiological decay, so the preservation of fruits and vegetables is very important. [0003] At present, there are many storage methods. Putting fruits and vegetables into polyethylene film packaging bags and sealing them in a controlled atmosphere storage is the most commonly used method. Due to the poor air permeability of the polyethylene film, the seal of each bag should be opened and vented regularly during the storage period, which increases the labor intensity and makes it difficult to ensure the storage quality. In order to solve this problem, a silicon window preservative film has appeared. Its structure is to op...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08K13/02C08K3/34C08K5/5425B65D65/38
CPCC08L23/06C08K2201/003C08K2201/014C08L2203/16C08L2205/025C08L2205/035
Inventor 黄盛
Owner WUXI HUANGSHENG PACKING PROD
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