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Membrane material for vacuum compressed bag and preparation method thereof

A technology for vacuum compression bags and film materials, applied in the field of packaging materials, can solve the problems of aging and rupture of vacuum compression bags, insufficient mechanical strength and hardening, and achieve the effects of good weather resistance, excellent flexibility and mechanical strength

Inactive Publication Date: 2016-07-20
SUZHOU DINGLI PACKAGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The vacuum compression bags sold on the market mainly have two materials, one is PA+PE, the vacuum compression bags of this material are softer, do not change their properties when exposed to low temperatures, and are more durable, but the mechanical strength of this material is not enough, it is easy to Tear and other phenomena occur; the other is PET+PE, which has relatively high tensile strength and is not easy to be damaged artificially, but it is easy to harden and break at low temperature
Aging is a natural characteristic of this type of material. After being used or placed for a period of time, the vacuum compression bag is prone to aging and rupture, which greatly shortens its service life.

Method used

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  • Membrane material for vacuum compressed bag and preparation method thereof
  • Membrane material for vacuum compressed bag and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A film material for a vacuum compression bag, comprising the following components in parts by weight: 15 parts of polyethylene, 4 parts of 2,2-dimethylol propionic acid, 20 parts of polyethylene terephthalate, formaldehyde 9 parts of trichlorosilane, 4 parts of acrylonitrile, 3 parts of butadiene, 10 parts of styrene, 3 parts of diphenyldichlorosilane, 1 part of monoalkoxy pyrophosphate, 1.2 parts of dicumyl peroxide .

[0020] Preparation:

[0021] (1) by weight, each component is weighed;

[0022] (2) Put each component into a high-speed mixer and mix evenly;

[0023] (3) The raw materials mixed in step (2) are extruded at high temperature with a twin-screw extruder. During twin-screw extrusion, the length-to-diameter ratio of the screw is 25:1, and the extrusion temperature of the twin-screw extruder is: the first zone The temperature is 172°C, the temperature in the second zone is 180°C, the temperature in the third zone is 200°C, and the temperature in the fourt...

Embodiment 2

[0026] A film material for a vacuum compression bag, comprising the following components in parts by weight: 17 parts of polyethylene, 5 parts of 2,2-dimethylolpropionic acid, 22 parts of polyethylene terephthalate, formaldehyde 9 parts of trichlorosilane, 4 parts of acrylonitrile, 3 parts of butadiene, 11 parts of styrene, 3 parts of diphenyldichlorosilane, 1.2 parts of monoalkoxy pyrophosphate, 1.3 parts of dicumyl peroxide .

[0027] Preparation:

[0028] (1) by weight, each component is weighed;

[0029] (2) Put each component into a high-speed mixer and mix evenly;

[0030] (3) The raw materials mixed in step (2) are extruded at high temperature with a twin-screw extruder. During twin-screw extrusion, the length-to-diameter ratio of the screw is 28:1, and the extrusion temperature of the twin-screw extruder is: the first zone The temperature is 172°C, the temperature in the second zone is 183°C, the temperature in the third zone is 202°C, and the temperature in the fou...

Embodiment 3

[0033] A film material for a vacuum compression bag, comprising the following components in parts by weight: 18 parts of polyethylene, 5 parts of 2,2-dimethylolpropionic acid, 23 parts of polyethylene terephthalate, formaldehyde 10 parts of trichlorosilane, 4 parts of acrylonitrile, 4 parts of butadiene, 11 parts of styrene, 3 parts of diphenyldichlorosilane, 1.3 parts of monoalkoxy pyrophosphate, 1.3 parts of dicumyl peroxide .

[0034] Preparation:

[0035] (1) by weight, each component is weighed;

[0036] (2) Put each component into a high-speed mixer and mix evenly;

[0037] (3) The raw materials mixed in step (2) are extruded at high temperature by a twin-screw extruder. During twin-screw extrusion, the length-to-diameter ratio of the screw is 30:1, and the extrusion temperature of the twin-screw extruder is: the first zone The temperature is 174°C, the temperature in the second zone is 186°C, the temperature in the third zone is 204°C, and the temperature in the four...

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Abstract

The invention provides a membrane material for a vacuum compressed bag and a preparation method thereof. The membrane material comprises the following components: polyethylene, 2,2-dimethylolpropionic acid, polyethylene glycol terephthalate, methyl trichlorosilane, acrylonitrile, butadiene, styrene, diphenyl dichlorosilane, mono-alkoxypyrophosphate and dicumyl peroxide. The preparation method comprises the following steps: weighing the components in parts by weight; feeding each component into a high-speed mixer, and uniformly mixing; extruding the uniformly mixed raw materials at a high temperature by using a twin-screw extruder; casting the mixed materials into a membrane after extruding by using a casting machine,and cooling and packaging after casting, thereby obtaining the product. The membrane material for the vacuum compressed bag has high weather resistance comprising illumination resistance, high temperature resistance and low temperature resistance, also has excellent flexibility and mechanical strength and is suitable for a service environment of the vacuum compressed bag.

Description

technical field [0001] The invention relates to the field of packaging materials, in particular to a film material for vacuum compression bags and a preparation method thereof. Background technique [0002] Vacuum compression bags, also called PE zipper composite bags, can effectively prevent fleas, mold, moisture, oxidation, etc., and keep clothes clean and preserved. Expanded quilts and other items are crushed to isolate the outside air to save space and achieve the functions of dust-proof, mildew-proof, moisture-proof, and insect-proof. [0003] The vacuum compression bags sold on the market mainly have two materials, one is PA+PE, the vacuum compression bags of this material are softer, do not change their properties when exposed to low temperatures, and are more durable, but the mechanical strength of this material is not enough, it is easy to tearing and other phenomena; the other is PET+PE, which has a relatively high tensile strength and is not easy to be artificial...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L23/06C08L55/02C08K5/09C08K5/5419C08K5/521C08F279/04C08J5/18
CPCC08L67/02C08F279/04C08J5/18C08J2367/02C08J2423/06C08J2455/02C08L2201/08C08L2203/16C08L2205/03C08L2207/066C08L23/06C08L55/02C08K5/09C08K5/5419C08K5/521
Inventor 顾建芳
Owner SUZHOU DINGLI PACKAGING
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