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Preparation method of elastic damping plastic packaging material

A plastic packaging and elastic technology, applied in the field of packaging materials, which can solve the problems of deformation, low tensile strength and toughness, and poor elasticity.

Inactive Publication Date: 2021-01-15
WUJIANG DINGTAI ELECTRONIC MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, the plastic packaging materials used for packaging are extremely poor in elasticity. After being pulled, especially after breaking the ultimate tensile force, it is easy to cause irreversible deformation, weak recovery force, low tensile strength and toughness.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] In an embodiment of the present invention, a method for preparing an elastic shock-absorbing plastic packaging material includes the following steps:

[0030] Step 1, preparation of zeolite composite material:

[0031] Sieve the zeolite to obtain zeolite with uniform volume as the raw material; squeeze and crush the zeolite, filter the crushed zeolite, squeeze and crush the rest of the filter, and finally grind it into powder to obtain a powder Zeolite materials;

[0032] Cook the sawdust, cool it to room temperature, let it stand for 3.2 hours, then heat it to 99°C for cooking, add activated carbon at a volume ratio of 127:2 during the cooking process, stir and mix, and filter and collect after the stirring is completed The filtrate is concentrated to make a fiber solution; and the filtrate is concentrated to a water content of 23%;

[0033] Mix and stir the powdery zeolite material and the fiber solution according to the volume ratio of 2:5 to make the zeolite composi...

Embodiment 2

[0043] The difference between the embodiment of the present invention and the embodiment 1 is only that: the sawdust is cooked, cooled to room temperature, left to stand for 2 hours, and then heated to 95°C for cooking, and activated carbon is added in a volume ratio of 100:1 during the cooking process. And stir and mix, after the stirring is finished, filter and retain the filtrate to concentrate to make a fiber solution; and the filtrate is concentrated to a water content of 20%;

Embodiment 3

[0045] The difference between the embodiment of the present invention and the embodiment 1 is only that: the sawdust is cooked, cooled to normal temperature, left to stand for 5 hours, and then heated to 106°C for cooking, and activated carbon is added in a volume ratio of 168:3 during the cooking process. And stir and mix, after the stirring is completed, filter and retain the filtrate to concentrate to make a fiber solution; and the filtrate is concentrated to a water content of 25%;

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PUM

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Abstract

The invention is applicable to the field of packaging materials, and particularly relates to a preparation method of an elastic damping plastic packaging material, which comprises the following stepsof: firstly, preparing a zeolite composite material: preparing a powdery zeolite material, preparing a fiber solution, and mixing and stirring the powdery zeolite material and the fiber solution; secondly, preparing a polyethylene basic backing material: melting polyethylene, adding the melted rubber, and stirring and mixing; thirdly, preparing a sodium bicarbonate combined treatment material; andfourthly, uniformly adding the zeolite composite material into the molten polyethylene base material, quickly stirring, adding the sodium bicarbonate composite treatment material, and solidifying toobtain the finished product. A plurality of cavities are formed in the crystals of zeolite, the sodium bicarbonate combined treatment material is added and then decomposed to release gas to enlarge the volume of the cavities, the sodium bicarbonate combined treatment material and fiber liquid are matched with rubber and polyethylene in the polyethylene base material, the rubber and fibers enter the cavities with the enlarged volume, and the material with high elasticity, high toughness and tensile strength is formed.

Description

technical field [0001] The invention is applicable to the field of packaging materials, in particular to a preparation method of elastic shock-absorbing plastic packaging materials. Background technique [0002] Plastics can be divided into thermosets and thermoplastics, the former cannot be reshaped for use, and the latter can be reproduced. Thermoplasticity has a large physical elongation, generally 50%-500%. The force does not vary perfectly linearly at different elongations. The different properties of plastics determine its use in life and industry. With the advancement of technology, research on plastic modification has never stopped. It is hoped that in the near future, modified plastics can be used more widely, and even replace steel and other materials without polluting the environment. [0003] Commonly used polyethylene can be divided into low-density polyethylene (LDPE), high-density polyethylene (HDPE) and linear low-density polyethylene (LLDPE). Among the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L97/02C08L21/00C08K9/00C08K7/26C08K7/24C08K3/26C08J9/08
CPCC08J9/08C08J9/0061C08J9/0085C08J9/009C08J9/0066C08J2323/06C08J2497/02C08J2421/00C08J2203/02
Inventor 朱建英
Owner WUJIANG DINGTAI ELECTRONIC MATERIALS CO LTD