Papery food packaging bag and preparing method

A production method and packaging bag technology are applied in the production of the paper food packaging bag, in the field of paper food packaging bags, which can solve the problems of low production efficiency and low tensile strength, achieve high hydrophobicity and toughness, and maintain human health. , beneficial to environmental protection

Inactive Publication Date: 2005-03-30
蔡明哲
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to replace plastic bags with paper bags, the inventor has carried out extensive research and a large number of tests on paper bags in the prior art, and found that the paper bags in the prior art not only have the problem of low production efficiency, but also can be used as food packaging bags. The paper still has the problem of low tensile strength. Of course, the tensile strength here includes both the dry tensile index and the wet tensile index, and it must be tested separately from the longitudinal and transverse directions.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: the paper food packaging bag of the present invention adopts the paper that pulp fiber is carried out sizing on the net to make through bag-making machine and is made, and the sizing degree of this paper is 6-7 gram / square meter. Paper is dry paper, and paper fiber is longer, and the tensile strength index of paper is, dry tensile longitudinal direction is 40N, and dry tensile transverse direction is 25N, and the bursting strength of paper is 130KPa, detects through test, paper food of the present invention The packaging bag can be naturally degraded within two months in wet soil, and it is an environmentally friendly "green" product that replaces plastic bags. Therefore, the present invention is a convenient and practical paper food packaging bag that is beneficial to the maintenance of human health and environmental protection.

Embodiment 2

[0019] Embodiment 2: the paper food packaging bag of the present invention adopts the paper made by sizing pulp fibers on the net to be made by a bag making machine, and the sizing degree of the paper is 9-10 g / square meter. Paper is dry paper, and paper fiber is longer, and the tensile strength index of paper is, dry tensile longitudinal direction is 42N, and dry tensile transverse direction is 26N, and the bursting strength of paper is 140KPa, detects through test, paper food of the present invention The packaging bag can be naturally degraded within two months in wet soil, and it is an environmentally friendly "green" product that replaces plastic bags.

Embodiment 3

[0020] Embodiment 3: In the paper food packaging bag of the present invention, in the paper making process, cationic starch can be used to internally sizing the paper. The starch used is cationized with epichlorohydrin, trimethylamine, and a mixture of monomethylamine or dimethylamine or N,N,N',N'-tetramethylethylenediamine. Cationization will make the molecular size of the starch larger, and this molecular size increase will have a beneficial effect on the dehydration of the paper machine forming wire.

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PUM

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Abstract

A food packing bag prepared by paper material has paper material characteristic as the follows: paper glueing degree is 8-10g / m2 paper burst is not less than 130kpa; paper tensile strength is as dry longitudinal tensile force of not less than 40N, dry horizontal tensile force of not less than 25N, wet longitudinal tensile force of not less than 15N and wet horizontal tensile force of not less than 10N.

Description

technical field [0001] The invention relates to food packaging technology, in particular to a paper food packaging bag and a method for making the paper food packaging bag. Background technique [0002] At present, the vast majority of food packaging materials in people's lives are plastic bags. Whether it is a shopping mall or a farmer's market, the use of plastic bags is extremely common, and it is common for plastics to be used as the outer packaging of commodities. We know that plastic is an organic material. Under certain medium environment and temperature conditions, some polymer monomers and some additives will dissolve, and it is inevitable that a small part will be transferred to food, which will be harmful to human health after eating. cause adverse effects. People discard plastic bags after using them, because plastics are difficult to rot or degrade, which not only affects environmental sanitation, but also causes great pollution to the environment for a long ti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D30/02D21C3/00D21C9/10D21F5/00D21F9/00D21H21/16
Inventor 蔡新民蔡明哲
Owner 蔡明哲
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