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Photodegradable food plastic bag with controllable service life

A technology of photodegradation and plastic bags, which is applied in the field of daily necessities, can solve the problems of increasing waste and pollution, and achieve the effect of accelerating weathering and decomposition and reasonable structure

Inactive Publication Date: 2018-09-28
任道奎
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Increased waste and pollution to a certain extent

Method used

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  • Photodegradable food plastic bag with controllable service life

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Embodiment Construction

[0012] Such as figure 1 The photodegradable food plastic bag with controllable life is characterized in that it includes a bag body, the bag body is a polyethylene film layer 2, and the outer layer of the polyethylene film layer 2 is coated with a photosensitive inhibitor layer 1, polyethylene The inner layer of the film layer 2 is coated with a photosensitizer layer 3 .

[0013] The thickness of the photosensitive inhibitor layer 1 is 1 / 4 of the thickness of the bag body.

[0014] The thickness of the photosensitizer layer 3 is 1 / 4 of the thickness of the bag body. Reasonable thickness design guarantees storage time for another 1-2 years. Decomposition time is less than 1 year.

[0015] Specifically, when stored, it is in a neatly placed state. The photosensitive inhibitor layer 1 protects the whole bag body at the outermost layer. When the food bag is used and discarded, the photosensitizer layer 3 will be exposed to light to accelerate its decomposition.

[0016] The ...

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Abstract

The invention relates to a photodegradable food plastic bag with a controllable service life. The photodegradable food plastic bag is characterized by comprising a bag body which is a polyethylene film layer, wherein a photosensitive inhibitor layer is coated on the outer layer of the polyethylene film layer; and a photosensitizer layer is coated on the inner layer of the polyethylene film layer.The photodegradable food plastic bag is reasonable in structure, delicately utilizes characteristics of a photosensitive inhibitor and a photosensitizer, and upgrades the conventional polyethylene film bag body. While unused and in a sealed state, the photosensitive inhibitor layer effectively protects the bag body. After being used and cuparded, the food bag is not as orderly as the food bag in an unused state and is mostly damaged. The photosensitizer layer is in sufficient contact with outside light, so that weathering and decomposing of the food bag are quickened.

Description

Technical field: [0001] The invention relates to a photodegradable food plastic bag with controllable life, which belongs to the field of daily necessities. Background technique: [0002] Traditional food plastics are mostly polyethylene films, which are non-toxic and can be used to hold food. However, due to the extremely slow degradation rate of this plastic, it is difficult to recycle and process, and it is the main source of white pollution. Also caused serious waste of energy and environmental pollution. At present, there is a technology of introducing photosensitizers into polyvinyl chloride to improve the decomposition rate, but polyvinyl chloride is not as stable as polyethylene, and it has certain risks when used in food packaging. Moreover, polyvinyl chloride with photosensitizers has a short life span and poor toughness. When the food bag has not been used for a long time and is in a sealed state, it has begun to weather and crack. Increased waste and pollution...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D33/00B65D30/02
CPCB65D33/00B65D29/00
Inventor 任道奎
Owner 任道奎
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