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Breathable bag for fresh food preservation

A breathable bag, fresh technology, applied in applications, household appliances, household packaging, etc., can solve the problems of content pollution, corruption and deterioration, and achieve the effects of reducing condensation, prolonging shelf life, and improving ventilation.

Inactive Publication Date: 2020-12-08
广东鼎孚新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, external pollutants can easily enter the packaging bag through the vent holes, causing the contents to be polluted and spoiled.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A breathable bag for keeping fresh food fresh. A transparent anti-fog film arranged on the front and a breathable film arranged on the back are heat-sealed and bonded to form a bag body with an upper opening.

[0024] The breathable membrane has a three-layer structure. The core layer is composed of 70-80 parts of PE, 15-25 parts of zeolite, and 5 parts of anti-fog masterbatch by weight; the outer layer is composed of 88 parts of PE, 10 parts of zeolite, 2 parts of anti-blocking masterbatch; the inner surface layer is composed of raw materials in parts by weight: 88 parts of heat-sealable PE, 10 parts of zeolite, and 2 parts of anti-blocking masterbatch. The thickness of the inner and outer layers is ≤2um. The average pore diameter of zeolite is 0.3um, and the average size is 2-4um. The breathable film is prepared by unidirectional stretching process, and the stretching ratio is 3-5 times. When performing uniaxial stretching, the deformation rate of the polymer materi...

Embodiment 2

[0027] Embodiment 2: A breathable bag for keeping fresh food fresh. The transparent anti-fog film arranged on the front and the breathable film arranged on the back are heat-sealed and bonded to form a bag body with an upper opening.

[0028] The breathable membrane has a three-layer structure. The core layer is composed of raw materials in parts by weight: 70-80 parts of homopolypropylene, 15-25 parts of zeolite, and 5 parts of anti-fog masterbatch; the outer layer is composed of raw materials in parts by weight: 88 10 parts of homopolypropylene, 10 parts of zeolite, 2 parts of anti-blocking masterbatch; the inner surface layer is composed of 88 parts of copolymerized polypropylene, 10 parts of zeolite, 2 parts of anti-blocking masterbatch according to the weight of the raw material. The thickness of the inner and outer layers is ≤2um. The average pore diameter of zeolite is 0.3um, and the average size is 2-4um. The production process of the breathable film still adopts the ...

Embodiment 3

[0032] A breathable bag for keeping fresh food fresh. A transparent anti-fog film arranged on the front and a breathable film arranged on the back are heat-sealed and bonded to form a bag body with an upper opening.

[0033]The breathable membrane has a three-layer structure. The core layer is composed of raw materials by weight: 60-70 parts of homopolypropylene, 5-20 parts of calcium carbonate, 5-20 parts of zeolite, and 5 parts of anti-fog masterbatch; the outer layer is based on weight The composition of raw materials in parts: 88 parts of homopolypropylene, 10 parts of zeolite, and 2 parts of anti-blocking masterbatch; the composition of raw materials in parts by weight of the inner surface layer: 88 parts of copolymerized polypropylene, 10 parts of zeolite, and 2 parts of anti-blocking masterbatch grain. Both inner and outer layer thicknesses are ≤ 2um. The average pore diameter of zeolite is 0.3um, and the average size is 2-4um. The average size of calcium carbonate po...

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Abstract

The invention provides a breathable bag for fresh food preservation. Thebreathable bag is characterized in that a transparent antifogging film arranged on the front side and a breathable film arrangedon the back side are bonded by heat sealing to form a bag body with an upper opening, and the antifogging film is composed of, by weight, 90-98 parts of high polymer material, 1-5 parts of antifogging master batch and 1-5 parts of anti-adhesion master batch; the breathable film is prepared from, by weight, 50-80 parts of a high polymer material, 10-45 parts of a filler, 1-5 parts of the antifogging master batch and 1-5 parts of anti-adhesion master batch; and the antifogging film and the breathable film are multilayer structure films prepared by utilizing unidirectional stretching equipment or bidirectional stretching equipment.

Description

technical field [0001] The technical proposal belongs to the technical field of fresh-keeping film, and specifically belongs to a breathable bag for keeping fresh food fresh. Background technique [0002] Fresh products are difficult to store for a long time and are easily spoiled. According to relevant statistics cited by the Preservation Center of Shanghai Academy of Agricultural Sciences, the postharvest commercialization of fruits and vegetables and the low level of preservation technology in storage and transportation have resulted in postharvest loss rates as high as 20% to 30%, and at the same time formed a large amount of biological waste , so it causes an annual economic loss of 200 billion yuan. This means that every year about a quarter of fruit and vegetable products are wasted before they are eaten, while the rate in foreign developed countries is less than 5%. [0003] Fresh vegetables after picking will continue to respire, absorb oxygen, produce water and c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/06B32B27/20B32B27/32B32B33/00B65D65/40
CPCB32B27/08B32B27/20B32B27/32B32B33/00B65D65/40B32B2250/242B32B2307/412B32B2307/724B32B2439/70
Inventor 梁雁扬邱镇贤谢大弟刘祥贵梁雁锋梁俊佳
Owner 广东鼎孚新材料科技有限公司
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