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Printing paper

A printing paper and printing paper technology, applied in papermaking, paper coating, textiles and papermaking, etc., can solve problems such as difficulties and difficult operations, and achieve the effect suitable for printing

Inactive Publication Date: 2013-03-27
大连军乐印刷包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The known technology uses coniferous trees with high lignin as raw materials, but there are great difficulties in specific operations, so there are many difficulties in how to produce low-density paper with high whiteness

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A kind of printing paper is made by mixing hardwood mechanical pulp used in one of finely ground wood pulp, thermal refining and alkaline peroxide mechanical pulp with a small amount of low-density agent after papermaking operation, Coating a layer of starch paper strength enhancer on the surface of the base paper to obtain a printing paper with a density of 0.35 to 0.80 g / cm3, and a protective film on the surface of the printing paper.

[0013] As the best embodiment, the single fiber density index of the hardwood mechanical pulp is 0.30% or more.

[0014] As the best embodiment, the smearing amount is preferably in the range of 10 to 75% by weight of the entire pulp.

[0015] As a best embodiment, the addition amount of the low density agent is preferably in the range of 0.1 to 1.5%.

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PUM

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Abstract

The invention relates to low-density medium-quality printing paper, which is high in whiteness, extremely low in density, low in hardness (namely soft), suitable for printing and free from bleeding. The printing paper is prepared by the steps that mechanical pulp of broad-leaf trees, produced during chemical medicine manufacture, and a few of low-density agents are used for papermaking together to prepare raw paper, and a layer of starch-type surface paper strength enhancer is coated on the surface of the raw paper.

Description

Technical field [0001] The invention relates to a printing paper, in particular to a low-density medium-quality printing paper. Background technique [0002] In recent years, one of the important qualities required for paper products is its low density. With the increasing emphasis on environmental protection in recent years, how to effectively use paper pulp made from forest resources while maintaining the thickness and weight of the paper, that is, low-density and low-density paper products are widely used by users Required. [0003] The well-known process uses conifers containing high lignin as raw materials, but there are great difficulties in specific operations. Therefore, there are many difficulties in how to produce low-density paper with high whiteness. Summary of the invention [0004] The invention provides a printing paper. [0005] A kind of printing paper is made by mixing hardwood mechanical pulp used in one of finely ground wood pulp, thermal refining and alkaline ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/14D21H21/18
Inventor 刘小凡
Owner 大连军乐印刷包装有限公司