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Composite paper board and production method thereof

A production method and cardboard technology, which is applied in the field of food packaging bags, can solve the problems of excessive glue consumption, easy cracking, and brittleness of composite cardboard, and achieve the effect of simple and easy production method, not easy to crack, and environmentally friendly cracking

Inactive Publication Date: 2010-04-07
XIAMEN TONGLI PRINTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large amount of glue used in this method, the composite cardboard produced is brittle, and the finished product is easy to crack and not environmentally friendly.

Method used

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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  • Composite paper board and production method thereof
  • Composite paper board and production method thereof
  • Composite paper board and production method thereof

Examples

Experimental program
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Effect test

Embodiment Construction

[0026] figure 2 Shown is a structural schematic diagram of the present invention, a composite cardboard, including an intermediate layer 2 and inner and outer layers 1, 3, wherein the intermediate layer 2 is formed by bonding two layers of kraft cardboard 21, 22 with glue 4 coated at intervals , the outer surface layer 3 is pasted on one side of the middle layer 2 through uniformly coated glue 5 , and the inner surface layer 1 is pasted on the other side of the middle layer 2 through glue 4 coated at intervals.

[0027] In this embodiment, the glue 4 coated at intervals is kept parallel, and the ratio of the width a of the glue 4 coated at intervals to the width b of the gap is 1:2. Of course, the glue 4 can also be applied at intervals of other forms. The ratio of a to b is also not limited thereto.

[0028] Between the two layers of kraft cardboard 21, 22 and between the kraft cardboard 22 and the inner surface layer 1, the glue 4 is coated at intervals, so that the prepar...

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PUM

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Abstract

The invention discloses a composite paper board which comprises a middle layer, an inner surface layer and an outer surface layer, wherein the middle layer is formed by bonding two layers of kraft liner boards through glue which is coated at intervals, the inner surface layer is bonded on one surface of the middle layer through the glue which is coated at intervals, and the outer surface layer is bonded on the other surface of the middle layer through the glue which is evenly coated. A food bag produced by utilizing the composite paper board has good qualities of environmental protection and difficult cracking. The invention further discloses a method for producing the composite paper board, the method is simple and easy to operate, and the method can lead a finished product produced by the composite paper board to be more environment-friendly and difficult to crack.

Description

technical field [0001] The invention relates to a composite cardboard and a production method thereof, which are suitable for food packaging bags. Background technique [0002] Existing composite paperboard, such as figure 1 As shown, including the middle layer 2 and the inner and outer layers 1, 3, the middle layer 2 is made of two layers of kraft cardboard 21, 22 bonded by the glue 5 uniformly coated therebetween, and the inner and outer layers 1, 3 are degradable polyethylene PE , the outer surface layer 3 can be printed as required, the inner surface layer 1 is also attached to one side of the middle layer 2 through the evenly filled glue 5, and the outer surface layer 3 is attached to the other side of the middle layer 2 through the evenly filled glue 5 one side. [0003] The production method of the composite cardboard is as follows: firstly, print the degradable polyethylene PE as the outer layer 3 of the composite cardboard; secondly, evenly coat the glue 5 between...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/34B32B29/00D21H27/36B31F1/00
Inventor 陈亚通
Owner XIAMEN TONGLI PRINTING
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