Production process for producing case board paper printing layer by waste paper

A production process and printing layer technology, applied in the field of papermaking, can solve the problems of low quality, rough paper, poor use effect, etc., and achieve the effect of high quality paper, water resistance life, and good crosslinking performance

Active Publication Date: 2017-10-20
TAIZHOU FOREST PAPER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The paper formed by the above process is composite formed by two layers of paper, and the processing of pulp in the forming process is relatively simple, so the formed paper is relatively rough, the quality is not high, and the use effect is poor.

Method used

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  • Production process for producing case board paper printing layer by waste paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A kind of production technology that adopts waste paper to produce cardboard paper printing layer, refer to figure 1 shown, including the following steps,

[0047] Step 1: Transport the raw waste paper to the hydraulic pulper through the chain plate machine for disintegration, discharge the coarse pulp, slag, and plastic, and transport the pulp to the high-consistency slag remover through the discharge pump to remove the slag. After the good pulp is collected After fine sieving and grading sieve classification, short fibers, medium fibers and long fibers are formed;

[0048] Step 2: The cardboard printing layer includes a surface layer, a core layer and a bottom layer, wherein the surface layer includes 45% long fibers, 25% short fibers, and 25% long fibers in parts by weight, and the core layer includes a mass fraction of 35% % short fibers, 32% medium fibers, 33% long fibers, the bottom layer includes 50% short fibers, 25% medium fibers, and 25% long fibers;

[0049...

Embodiment 2

[0063] A kind of production technology that adopts waste paper to produce the printing layer of cardboard paper, the difference between embodiment 2 and embodiment 1 is that the fiber content of cardboard surface layer, core layer and bottom layer in step 2, wherein the surface layer comprises the parts by weight of 45% long fibers, 27% short fibers, 28% long fibers, the core layer includes 34% short fibers, 34% medium fibers, and 32% long fibers, and the bottom layer includes 45% mass fraction The short fiber of 28%, the medium fiber of 27%, the long fiber of 27%, all the other are consistent with embodiment 1.

Embodiment 3

[0065] A kind of production technology that adopts waste paper to produce cardboard printing layer, the difference between embodiment 3 and embodiment 1 is that the fiber content of cardboard surface layer, core layer and bottom layer in step 2, wherein surface layer comprises the parts by weight of 44% long fibers, 28% short fibers, 28% long fibers, the core layer includes 33% short fibers, 33% medium fibers, and 34% long fibers, and the bottom layer includes 50% mass fraction The short fiber of 29%, the medium fiber of 21%, the long fiber of 21%, all the other are consistent with embodiment 1.

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Abstract

The invention discloses a production process for producing a case board paper printing layer by waste paper. The production process is characterized by including the steps: waste paper fiber fluffing; classification; slag removal; screening by the aid of a pressure screen; core layer, surface layer and bottom layer preparation; composite forming; first drying; surface sizing; second drying; hard press polishing; bending; packaging; storing. The case board paper printing layer comprises a surface layer, a core layer and a bottom layer, the fiber lengths of three layers are combined by long, middle and short fibers of different proportions, impurities are repeatedly cleaned by high-concentration slag eliminator and a pressure screen, and finally formed paper is excellent in quality.

Description

technical field [0001] The invention relates to the field of papermaking, in particular to a production process for producing a printing layer of cardboard paper by using waste paper. Background technique [0002] my country is a big country of production, and the annual transaction of goods is as high as ten thousand yuan, and the goods need to be packaged in the sales process. The most common packaging material is cardboard boxes. Not only cardboard boxes, but also a lot of waste in daily life. Paper, including waste newspapers, periodicals, writing paper, etc. Therefore, there is a large amount of waste paper and waste cardboard to be processed in our country every year, and most of these waste paper and waste paper boxes are reprocessed and used in paper mills to produce new value. However, domestic waste paper contains a lot of impurities, and there is a lot of straw pulp, and it has been reused and reproduced by some small processing plants for many times. It is difficu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21B1/32D21B1/34D21D5/02D21F1/00D21F11/12
CPCD21B1/32D21B1/345D21D5/02D21F1/00D21F11/12Y02W30/64
Inventor 林启群
Owner TAIZHOU FOREST PAPER CO LTD
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