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Refined light weight coated paper and its production process

A coated paper, lightweight technology, applied in paper, papermaking, papermaking and other directions, can solve the problems of in-machine coating, the level of calendering equipment is not very high, the product quality is not high, and achieve full and bright printing colors, manufacturing Simple process and clear image dots

Inactive Publication Date: 2006-05-10
YUEYANG FOREST & PAPER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Light-weight coated paper at home and abroad is made of all chemical pulp or partly chemical mechanical pulp. Most of the raw materials used are chemical pulp, which has a certain gap with foreign products in terms of paper bulk, air permeability and other technical indicators. , especially the level of coating and calendering equipment in the machine is not very high, and the product quality cannot be compared with similar foreign products

Method used

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Embodiment Construction

[0021] Bleached kraft chemical wood pulp, deinked waste paper pulp (DIP) and pretreated poplar alkaline hydrogen peroxide bleached thermomechanical pulp (P-RC APMP) that have been beaten to an appropriate degree of percussion, according to 28:35: Prepare a 600Kg mixed pulp with a ratio of 37, add fillers such as 67kg of light calcium carbonate, PAM0.25kg, 3kg of bentonite, and 8kg of cationic starch to make paper stock. The paper stock is formed by wire, compound shoe press, and pre-dried; Cloth (coating amount 333kg), infrared drying, post-drying, soft calendering finishing, coiling, and rewinding to obtain 1000kg of refined lightweight coated paper of the size required by the user. Concentration of 0.95% for papermaking and 0.95%; 6.5% moisture for paper coiling; the basis weight of the refined light-weight coated paper is 65g / m 2 , moisture is 6.5%, whiteness (ISO) 85%, opacity 85%, surface absorption weight 30g / m 2 ;Break length (longitudinal) 4200M; Transverse folding re...

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Abstract

This invention discloses a fine smearing cloth and its making technology, the charater of which is that it uses the bleaching sulfate chemical paddle, the pasta pretreatment alkalescence hydrogen peroxide bleaching thermomechanical pulp (P-RC APMP), the wastepaper de-ink plasm, and the most advanced plasm making and transimitting system, the diluting stream case, the vertical web nipping frame, the straight-through shoe type grinding, membrane type surface gluing machine or applying machine, the infrared drier, the 8 roller soft calendar, the strip type duplicate reel machine. The obtained refine light coated paper is 48í½80g / m2ú¼the moisture is 5.0í½7.0úÑú¼the whiteness (ISO) is 75í½90úÑ, the untransparency is more than 82úÑú¼the breakage length (longitudinal ) is more than 4200m; the horizontal breaking bearing is more than 12 times, the roughness of the press surface(PPS) is 1.3í½1.8ª

Description

1. Technical field: [0001] The invention relates to a refined lightweight coated paper and its manufacturing process. 2. Background technology: [0002] Lightweight coated paper is a new product first developed by Japan, Europe and the United States in the 1980s. It means that the coating amount on each side of the base paper is less than 10g / m 2 A printing paper. Through the surface coating treatment and mechanical finishing of paper pages, the surface properties of paper pages are improved. It is widely used in the color printing of high-end magazines, advertisements, pictorials, and textbooks. It develops very rapidly and is the paper type with the fastest market growth rate. one. [0003] Light-weight coated paper at home and abroad is made of all chemical pulp or partly chemical mechanical pulp. Most of the raw materials used are chemical pulp, which has a certain gap with foreign products in terms of paper bulk, air permeability and other technical indicators. , esp...

Claims

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Application Information

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IPC IPC(8): D21H11/10D21F9/00D21H17/63D21H19/36D21H21/00D21H21/14D21H21/36
Inventor 张栋基刘曙光尹超杨振宇周湘红邵启超李甘霖谈忠刘成良张群飞张菊先文飚张陆彪王维
Owner YUEYANG FOREST & PAPER CO LTD
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