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Sheet for packaging food and medicine

A technology for packaging and pharmaceuticals, which is applied in the field of profiles for food and pharmaceutical packaging, can solve problems such as environmental pollution, toxic substances, toxicity, etc., and achieve the effects of good mechanical strength, good barrier property, and high strength

Inactive Publication Date: 2006-03-22
ZHUOGAOTAI SUCKING PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the substrate layer of sheets used for food and pharmaceutical packaging is generally polyvinyl chloride layer. Although polyvinyl chloride materials have the characteristics of flame retardancy, self-extinguishing, bright colors, corrosion resistance and durability, their content Vinyl chloride is a carcinogen, and some toxic auxiliary substances such as plasticizers, stabilizers, and anti-aging agents are added in its manufacturing process, and toxic substances will be released when incinerated
Therefore, the food and drug packaging sheets made of polyvinyl chloride substrate layer have certain toxicity, and will release toxic gas during recycling, which will pollute the environment.

Method used

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  • Sheet for packaging food and medicine

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Embodiment Construction

[0012] according to figure 1 As shown, the present invention includes a substrate layer 1 , a connecting layer 2 and a sealing layer 3 . The substrate layer 1 is an amorphous polyethylene terephthalate layer, that is, an APET layer. APET material is made by extruding PET material through T-die, and its thickness is 0.05mm to 2.8mm. In this embodiment, the thickness is 0.5mm and the width is 750mm. The tie layer 2 on the substrate layer 1 is the adhesive coating of the two-component solvent-based polyurethane glue that is coated, and it can also be the adhesive coating of the one-component polyurethane glue, and its coating amount is 0.3 g / m 2 . According to different requirements, the coating amount ranges from 0.1 to 10g / m 2 . The sealing layer 3 is formed by coating polyvinylidene chloride (PVDC), that is, a copolymer emulsion of vinylidene chloride and vinyl chloride, on the connection layer 2 with a coating machine, dried, and then coated. 15g / m 2 . According to d...

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Abstract

The present invention relates to sheet for packing food and medicine, and belongs to the field of shaped packing material. The sheet for packing food and medicine has basic material layer of non-crystalline polyethylene terephthalate, and has high obstruction performance on oxygen, water vapor, and smell of food and medicine, high mechanical strength, good thermal sealing performance, high thermal sealing strength, and high chemical stability without reaction with acid, alkali, salt, solvent and oil. The sheet for packing food and medicine coincides with the requirement of food sanitation, is harmful to human body, can be recovered for reuse. The present invention may be used widely in making food and medicine packing container.

Description

technical field [0001] The invention relates to article packaging profiles, especially profiles for food and medicine packaging. Background technique [0002] At present, the substrate layer of sheets used for food and pharmaceutical packaging is generally polyvinyl chloride layer. Although polyvinyl chloride materials have the characteristics of flame retardancy, self-extinguishing, bright colors, corrosion resistance and durability, their content Vinyl chloride is a carcinogen, and some toxic auxiliary substances such as plasticizers, stabilizers, and anti-aging agents are added in its manufacturing process, and toxic substances will be released when burned. Therefore, the food and medicine packaging sheets made of polyvinyl chloride base layer have certain toxicity, and will release toxic gas during recycling, which will pollute the environment. For the above reasons, it is necessary to find a sheet for food and drug packaging that can replace the base layer of the polyv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D65/40B32B27/28
Inventor 林卓辉
Owner ZHUOGAOTAI SUCKING PLASTIC
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