Method for making environmental-friendly low-quantification high-endurability coated duplex boards with grey backs

A low-weight, gray-backed white technology, applied in the field of papermaking, can solve the problems of low grammage and high bursting strength, and achieve the effects of low price, improved bulk and high air permeability

Active Publication Date: 2016-01-13
DONGGUAN NINE DRAGONS PAPER IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that low grammage and high bursting strength cannot be achieved in the current technology of making gray-bottomed w

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment 1

[0017] Technological process: surface / lining / core / bottom mixed pulp chest—face / lining / core / bottom paper machine pulp chest—one stage slag remover—one stage pressure screen—PE tank—face / lining / core / bottom headbox—paper Machine face / lining / core / bottom wire section—press section of paper machine—dryer (front drying section)—surface sizing machine—dryer cylinder (post drying section)—hard calender—first coating (surface precoating)— Infrared Dryer—Second Coating (Prime Coating)—Infrared Dryer—Third Coating (Middle Coating)—Hot Air Box—Fourth Coating (Back Adhesive)—Infrared Dryer—Five Coating (Surface Coating)—Infrared Dryer— Cold cylinder—soft calendering—coiling—rewinding completion—packing and sorting for storage.

[0018] 1. Ratio of slurry in the mixed stock tank:

[0019] Surface layer: 70% hardwood bleached kraft pulp + 30% mixed office waste pulp;

[0020] Lining: 100% deinked pulp;

[0021] Core layer: 100% mixed waste paper pulp;

[0022] Bottom layer: 50% deinked pu...

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PUM

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Abstract

The invention discloses a method for making environmental-friendly low-quantification high-endurability coated duplex boards with grey backs. The method for making the environmental-friendly low-quantification high-endurability coated duplex boards with grey backs adopts a unique raw material ratio, a slurry ratio and a paper making method by a paper machine, so as to solve the contradiction between low-quantification and high-endurability of coated duplex boards with grey backs made from waste paper, the bursting strength of the produced environmental-friendly low-quantification high-endurability coated duplex boards with grey backs is larger than 460 Kpa, and the bursting index reaches up to more than 2.2 Kpa*m2/g, at the same time, the quantification of the coated duplex boards with grey backs is within the range from 193 to 207 g, and the thickness is within the range from 220 to 240 [mu]m. The method for making the environmental-friendly low-quantification high-endurability coated duplex boards with grey backs is great breakthrough and improvement of production of environmental friendly paper in the paper industry, and the method is suitable for popularization and application.

Description

technical field [0001] The invention relates to papermaking technology, in particular to a preparation method of an environment-friendly low-weight high-breakage-resistant gray-bottomed white board paper. technical background [0002] At present, with the development of the printing and packaging industry, the market has higher and higher requirements for special paper, especially for pulp and paper enterprises that use waste paper as raw material. a big problem. Contents of the invention [0003] The purpose of the present invention is to solve the problem that low grammage and high bursting strength cannot be achieved in the current technology of making gray-bottomed white board paper using waste paper as raw material, and to provide an environmentally friendly low-quantity high-breaking-resistant gray-bottomed white board paper method of preparation. [0004] The above-mentioned purpose of the present invention is achieved through the following technical solutions: ...

Claims

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Application Information

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IPC IPC(8): D21F11/00D21H11/14D21H15/10D21H17/29
Inventor 刘名中刘晋嵩孙涛林新阳
Owner DONGGUAN NINE DRAGONS PAPER IND
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