Thinned high-barrier liquid packaging film and manufacturing method thereof

A high-barrier and packaging film technology, applied in packaging, wrapping paper, transportation and packaging, etc., can solve the problems of large temperature differences in film use, plummeting gas barrier performance, and harmful gases that are not conducive to environmental protection, so as to extend the shelf life of food and shelf life period, improve the gas barrier effect, and facilitate the effect of recycling
CN101274690AInactive Publication Date: 2008-10-01马龙升
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
马龙升
Publication Date
2008-10-01
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention relates to a thin-reducing and high impermeable liquid packaging membrane and a manufacturing method thereof. The product comprises a polyvinyl basilar membrane, a high impermeable polyvinyl alcohol layer, a composite adhesive layer and a protective polythene membrane layer, wherein, the polyvinyl basilar membrane comprises an outer layer, a middle layer and an inner layer and the outer layer and the middle layer comprise at least one of the two materials which are medium-density polythene or high-density polythene. The manufacturing method of the product comprises the steps of the preparation of the polyvinyl basilar membrane, the preparation of polyvinyl alcohol coating liquid and the preparation of the protective polythene membrane layer, coating and compounding, wherein, the polyvinyl alcohol coating liquid is diluted and the diluted polyvinyl alcohol coating liquid is coated on the outer layer of the polyvinyl basilar membrane to form the high impermeable polyvinyl alcohol layer and then the protective polythene member layer and the polyvinyl alcohol coating layer are compounded, cured and cut. The product of the invention has low thickness, good rigidness, high impermeable property, environmental protection, convenient use, low cost and simple technique.
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Description

technical field

[0001] The invention relates to a thinned high-barrier liquid packaging film and a manufacturing method thereof, in particular to a thinned polyethylene, polyvinyl alcohol high-barrier liquid packaging film and a manufacturing method thereof. Background technique

[0002] With the increasingly fierce competition in the liquid food market and the rising price of plastic raw materials for packaging, liquid food manufacturers have higher and higher requirements for the production cost and oxygen barrier and fresh-keeping performance of plastic packaging materials for packaging. How to reduce the production cost of packaging materials , and can prolong the shelf life and shelf life of the contents to meet the packaging requirements of liquid food, which is one of the problems to be solved in the field of liquid food packaging materials today.

[0003] Most of the liquid packaging films currently used in the market are produced by high-pressure polyethylene (LDPE)...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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