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Processing technology of laminated kraft paper

A processing technology and kraft paper technology, which is applied in the processing technology field of coated kraft paper, and can solve the problems of temperature increase and poor cooling effect of coated paper.

Inactive Publication Date: 2020-06-26
济南文海包装材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned invention application documents have the following disadvantages: when processing coated kraft paper, the coating masterbatch is hot-melted and then coated on the paper, and the kraft paper needs to be cooled and formed by cooling rollers to make the coated layer and paper more bonded. Due to the high temperature of the coated layer, the temperature of the cooling roll rises after a period of use, so the cooling effect on the coated paper is not good

Method used

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Experimental program
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Embodiment Construction

[0034] A kind of processing technology of coating kraft paper, kraft paper comprises the following steps:

[0035] S1. Feeding: Install the kraft paper on the laminating machine so as to transport the kraft paper forward.

[0036] S2. Humidification treatment: Make the moisture content of the kraft paper between 6% and 8%. Because the kraft paper itself is a plant fiber, it has water absorption, but too much water absorption of the kraft paper will cause the kraft paper to be too soft or loose, which will affect the subsequent Processing, on the contrary, if the moisture content of kraft paper is too low, it will increase the hardness and brittleness of kraft paper, which will easily cause the kraft paper to break when it is bent. Therefore, the moisture content of kraft paper is between 6% and 8%. optimal moisture content.

[0037] In order to ensure that the moisture content of kraft paper is between 6% and 8%, a detection device for detecting the moisture content of kraft ...

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PUM

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Abstract

The invention discloses a processing technology of laminated kraft paper, and belongs to the technical field of laminated kraft paper processing. The technology comprises the following steps: S1, feeding: mounting kraft paper on a laminating machine so as to convey kraft paper forwards; S2, humidification treatment, wherein the water content of the kraft paper is 6% to 8%; S3, napping treatment: carrying out surface napping treatment on the to-be-laminated side of the kraft paper, so that the roughness of the to-be-laminated surface of the kraft paper is increased; S4, laminating master batchpreparing: selecting PP and LEDP as master batches, and adding certain additives to the PP and the LEDP at the same time, wherein a ratio of the PP to the LEDP to the additives is 4:5.5:1; S5, compounding of the kraft paper and the laminating layer: laminating the laminating raw material to the napped surface of the kraft paper by using a laminating die head to form a film; S6, trimming of the edges of the formed laminated kraft paper; and S7, receiving of the laminated kraft paper. According to the invention, the processing technology has the effects that the temperature of the cooling rolleris prevented from rising, and the optimal cooling forming effect of the cooling roller on the laminated kraft paper is ensured.

Description

technical field [0001] The invention relates to the technical field of coating kraft paper processing, in particular to a processing technology of coating kraft paper. Background technique [0002] Coated kraft paper is a kind of coated paper. Coated paper is a composite material coated with plastic particles on the surface of paper through a casting machine. The main feature is that this composite material can be oil-proof, waterproof and heat-sealable. [0003] The existing Chinese invention patent with application publication number CN105694171A can be referred to, which discloses a preparation process of coated paper. The preparation process of the coated paper includes: selection of base paper, selection of coating raw materials, mixing and melting of coating raw materials, coating by a coating machine, hydraulic cooling and forming. The invention effectively reduces the dyeing and drying steps of the existing coating paper manufacturing method, greatly shortens the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H23/56D21H25/00D21H25/04
CPCD21H23/56D21H25/005D21H25/04
Inventor 林子慧韩春泉刘文强赵猛张超
Owner 济南文海包装材料有限公司