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A liquid-tight packaging bag

A technology for packaging bags and liquids, applied in the field of packaging bags, can solve the problems of troublesome sealing work, low product qualification rate, increased production cost, etc., and achieve the effect of reducing production cost, omitting sealing process, and improving product qualification rate.

Active Publication Date: 2016-05-11
李红彪
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The liquid packaging bag in the prior art needs to complete the sealing work after filling the liquid. The sealing work after filling the liquid is more troublesome, and often the sealing is not strict, resulting in a low pass rate of the product and increased production costs.

Method used

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  • A liquid-tight packaging bag
  • A liquid-tight packaging bag
  • A liquid-tight packaging bag

Examples

Experimental program
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Effect test

Embodiment Construction

[0029] refer to Figure 1 to Figure 14 , a liquid-tight packaging bag comprising a first film 1, a second film 2, a third film 3 and a fourth film 4, the length of the first film 1 and the fourth film 4 being greater than that of the second film 2 and the length of the third film 3, the second film 2, the third film 3 are located between the first film 1 and the fourth film 4, the third film 3 is welded to the inner wall of the fourth film 4 , the local welding between the second film 2 and the third film 3 forms a liquid inlet channel 5 between the second film 2 and the third film 3, if the width of the second film 2 and the third film 3 is smaller than the first The width of the fourth film 4 of the film 1, the edge of the first film 1 is welded with the fourth film 4 to form a bag, if the first film 1, the second film 2, the third film 3 and the fourth film 4 If the widths are the same, the edge of the first film 1 is welded to the partial edges of the second film 2, the t...

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Abstract

The invention discloses a liquid leakless packaging bag which comprises a first film, a second film, a third film and a fourth film, wherein the third film is welded with the inner wall of the fourth film; the second film is partially welded with the third film; a liquid inlet channel is formed between the second film and the third film; the edge of the first film is welded with the fourth film so as to form a bag body; or the edge of the first film is welded a part of the edges of the second film, the third film and the fourth film to form the bag body. After a liquid is filled, the packaging bag is formed into a sealed structure, then a sealing procedure is canceled, the pass percent of a product is improved, and the production cost is lowered; when people drink the liquid, no matter how many liquid is left inside the bag, the liquid is always at the uppermost part of the drink bag, people can take the liquid without raising the head, and no air is sucked when taking the liquid; as the part with the drink in the packaging bag is slightly swelled, people can feel certain hardness when holding the packaging bag by hand, then the defect that a drink bag in market cannot be stably held by hand because of the softness and infirmness is solved.

Description

technical field [0001] The invention relates to a packaging bag, in particular to a liquid packaging bag. Background technique [0002] The liquid packaging bags in the prior art need to be sealed after filling the liquid. The sealing work after filling the liquid is more troublesome, and often the sealing is not tight, resulting in a low pass rate of the product and increased production costs. Contents of the invention [0003] In order to overcome the deficiencies of the prior art, the invention provides a liquid-tight packaging bag that can omit the sealing work after filling the liquid, improve the qualified rate of the product, and reduce the production cost. [0004] The technical solution adopted by the present invention to solve its technical problems is: [0005] A liquid-tight packaging bag, comprising a first film, a second film, a third film and a fourth film, the length of the first film and the fourth film is greater than the length of the second film and th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65D85/72B65D30/08B65D33/36
Inventor 李红彪
Owner 李红彪
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