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A kind of manufacturing method of micro-coating elegant pure paper

A manufacturing method and coating technology, which is applied in the field of papermaking, can solve the problems of restricting product quality and sales price, poor printing quality, easy lint and powder loss, etc., so as to reduce the cost of subsequent wastewater treatment, production cost, and white water load Effect

Inactive Publication Date: 2011-12-14
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, chemical-mechanical pulp has the characteristics of high lignin content, low whiteness, difficulty in combining fine fibers (less hydrogen bonds), and poor retention of fillers. Excessively high chemical-mechanical pulp ratio makes the produced elegant pure paper have whiteness. Low, poor surface smoothness, easy to shed hair and powder, poor printing quality and other problems, seriously restricting product quality and sales price

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Poplar APMP pulp (45-60°SR), CTMP pulp (50-65°SR), chemical softwood pulp (30-45°SR), chemical reed pulp (35-45°SR) The ratio of 75%: 10%: 10%: 5% is mixed; then 15% calcium carbonate filler is added, and sent to the first-stage four-stage conical slag remover through the slurry pump to purify and remove slag, and then enter the degassing tank for degassing treatment; then enter the pressure screen for screening treatment (cationic PAM dosage 0.5kg / t paper, cationic starch 5kg / t paper, AKD sizing agent 5kg / t paper, modified diatomite 3kg / t paper, organic Particle retention aid 2kg / t paper); then sent to the headbox to go online, adjust the flow of the net, and control the weight of the paper at 80g / m 2 ;After the wet paper comes out of the wire section, it enters the press section for five-roller and three-nip compound pressing, and then enters the front drying section after being pressed until the dryness is ≥39%; the surface temperature of the drying cylinder is contr...

Embodiment 2

[0024] Poplar APMP pulp (45-60°SR), CTMP pulp (50-65°SR), chemical softwood pulp (30-45°SR), chemical reed pulp (35-45°SR) The ratio of 80%: 10%: 5%: 5% is used for slurry mixing; after that, 15% calcium carbonate filler is added, and the slurry pump is sent to the first-stage four-stage conical slag remover for purification and slag removal, and then enters the degassing process. tank for degassing treatment; then enter the pressure screen for screening treatment (cationic PAM dosage 0.5kg / t paper, cationic starch 5kg / t paper, modified diatomite 3kg / t paper, organic particle retention aid 3kg / t paper) ; Then send it to the headbox to go online, adjust the flow on the Internet, and control the paper weight at 95g / m 2 ;After the wet paper comes out of the wire section, it enters the press section for five-roller and three-nip compound pressing, and then enters the front drying section after being pressed until the dryness is ≥39%; the surface temperature of the drying cylinder ...

example 3

[0026]Poplar APMP pulp (45-60°SR), CTMP pulp (50-65°SR), chemical softwood pulp (30-45°SR), chemical reed pulp (35-45°SR) The ratio of 70%: 10%: 10%: 10% is used for slurry mixing; after that, 20% calcium carbonate filler is added, and the slurry pump is sent to the first-stage four-stage conical slag remover for purification and slag removal, and then enters the degassing process. tank for degassing treatment; then enter the pressure screen for screening treatment (cationic PAM dosage 0.8kg / t paper, cationic starch 8kg / t paper, AKD sizing agent 5kg / t paper, modified diatomaceous earth 3kg / t paper, organic Particle retention aid 3kg / t paper); then sent to the headbox to go online, adjust the flow on the net, and control the weight of the paper at 120g / m 2 ;After the wet paper comes out of the wire section, it enters the press section for five-roller and three-nip compound pressing, and then enters the front drying section after being pressed until the dryness is ≥39%; the surf...

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Abstract

The invention discloses a method for making slightly-coated elegant pure paper. The method comprises the following key steps of: making poplar APMP (alkaline peroxide mechanical pulp), CTMP (chemithermomechanical pulp), bleached chemical needlebush pulp and bleached chemical reed pulp; blending; adding auxiliary materials; making wet paper sheets; squeezing for dehydrating; primarily drying; slightly coating; secondarily drying; calendering; and finishing. The method can greatly lower the production cost, improve the looseness and thickness of paper sheets and ensure high strength of elegant pure paper, solves the problems that glues applied to AKD (alkyl ketene dimer) pulp have a low retention rate and are easy to be hydrolyzed, overcomes the defects of low fine fiber retention rate, high filler loss and the like in the highly-proportional chemimechanical pulp blending process, reduces the pulp consumption and lowers the white water load and subsequent waste water treatment cost, solves the problems of low whiteness, high surface roughness, low surface strength and the like due to the highly-proportional chemimechanical pulp, and can greatly increase the ash content and lower theproduction cost.

Description

technical field [0001] The invention relates to a method for manufacturing elegant pure paper with micro-coating, and belongs to the technical field of papermaking. Background technique [0002] Elegant pure paper is a high-grade art printing paper. Its paper quality is soft, its color is mild, and its surface is fine and matte. Reading for a long time will not cause visual fatigue and damage. It is a green environmental protection product. It is mainly used for printing high-quality books and high-end albums. , calendars, advertising brochures, etc.; printed matter is not only clear in pattern, full in color, and strong in three-dimensionality, but also high-grade, elegant, simple and natural, and is favored by many consumers, and it is also a variety vigorously developed by the domestic paper industry. [0003] In order to reduce pulping pollution load and production cost, improve bulkiness and printability, a certain proportion of chemical-mechanical pulp is generally use...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H11/12D21H21/16D21H21/10D21H17/67D21F11/00D21F3/00D21F5/02D21H19/40D21H19/44D21H19/54D21H21/30D21H21/12D21H23/58D21G1/00
Inventor 王玉珑刘艳新刘菲菲覃盛涛
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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