Oxygen-uptake oxygen-resistance type plastic beer bottle cap lining and processing method thereof

A processing technology and bottle cap technology, applied in the direction of flexible covering, coating, closing, etc., can solve the problems that iron-based oxygen absorbers do not meet food hygiene requirements and cannot be applied to food packaging, etc., to achieve extended applicability, good Feel and craft to achieve convenient effect

Active Publication Date: 2006-03-08
上海紫日包装有限公司
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AI Technical Summary

Problems solved by technology

[0003] Domestic iron-based oxygen absorbers have a history of many years, but iron-based oxygen absorbers do not meet the food hygiene requirements for direct contact with food, and can only exist in food packagin

Method used

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Embodiment Construction

[0009] An oxygen-absorbing and oxygen-blocking type plastic beer bottle cap inner pad material has two layers, one layer is a barrier layer, which is a coating film of polyvinylidene chloride ethyl acetate solution, the second layer is an oxygen-absorbing barrier layer, and the base resin It is ethylene vinyl alcohol copolymer barrier resin EVOH, the ethylene content of ethylene vinyl alcohol copolymer barrier resin is 44%, the oxygen absorbing masterbatch containing oxygen absorbing agent is dispersed in the ethylene vinyl alcohol copolymer matrix barrier resin, pyrimidine and The addition amount of its analogue oxygen-absorbing agent accounts for 0.0007% by weight of ethylene vinyl alcohol copolymer barrier resin; The moisture content of ethylene vinyl alcohol copolymer barrier resin pellet is controlled at 0.1%; Ethylene vinyl alcohol copolymer barrier resin density 1.14 grams / cm 3 .

[0010] The processing technology of the above-mentioned oxygen-absorbing and oxygen-blo...

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Abstract

The inner mat material of absorbing and preventing oxygen type beer bottle cap is disclosed. The first layer is obstruct layer, which a film coated by ethyl acetate solution of polyvinylidene chloride. The second layer is oxygen-absorbing obstruct layer, whose substrate is ethylene vinyl alcohol polymer obstruct resin in which the ethhyene content is 29-46%, the oxygen absorbing mother grains distributes in the said substrate, the weight percentage of pyridines and the like oxygen absorbent in the said obstruct resin is 0.0001-0.1%, the moisture of obstruct resin is 0.1-0.3% and the resin density is 1.14-1.21gram/cm3. First resolve polyvinylidene chloride using ethyl acetate solution to a transparent solution, equally spray the solution to coat on the inner surface of cap, which comes into the first obstruct layer by natural drying; secondly on the first obstruct layer the said polymer obstruct resin oxygen-absorbing layer is extruded.

Description

technical field [0001] The invention relates to a new type of sealing packaging material, in particular to an oxygen-absorbing and oxygen-resistant plastic beer bottle cap lining material and its processing technology. Background technique [0002] Patent ZL01105218.X discloses a process for making the oxygen barrier layer of beer bottle caps. The paste-like oxygen barrier material is transferred to the inner side of the bottom of the plastic cap through the transfer roller, and the process is repeated successively. A very thin layer of oxygen barrier layer is formed on the inner side of the cap bottom. layer, the oxygen barrier layer dries up after a short period of time, this kind of paste oxygen barrier material has great instability, it is difficult to form a uniform and round gasket, and the gasket after curing is not ideal strength. The oxygen barrier layer of the existing beer bottle cap inner pad is made of polyvinylidene chloride material. [0003] Domestic iron-b...

Claims

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Application Information

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IPC IPC(8): B65D65/40B65D53/04B05D1/02B05D3/00B05D7/24B29C47/00B21D51/46
Inventor 吴小洁
Owner 上海紫日包装有限公司
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