Manufacturing process of high-speed rotary light-weight coated digital paper

A digital paper, lightweight technology, applied in the direction of papermaking, coating, paper, etc., can solve the problems of poor product quality, and achieve the effect of simple manufacturing process, good surface strength and fast drying speed

Active Publication Date: 2020-03-17
YUEYANG FOREST & PAPER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no paper factory in China, and the product quality cannot be compared with similar foreign products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The softwood NBKP pulp, bleached hardwood pulp LBKP pulp, P-RCAPMP pulp, and DIP pulp that have been beaten to appropriate freeness are prepared at a ratio of 10:20:45:25 to prepare 664Kg mixed pulp, and 106 kg of fillers and appropriate Other chemical additives are formulated into paper material, which is formed by wire forming, composite pressing, and pre-drying; film coating (coating amount 230kg), infrared drying, post-drying, soft calendering finishing, winding, and rewinding Users require 1000kg of high-speed rotary light-weight coated digital paper of specifications and dimensions. The net concentration of papermaking is 0.75%, the moisture content of the paper roll is 6.5%, and the weight of the high-speed rotary light-weight coated digital paper is 70g / m 2 , Black optical density OD value 1.20, drying time 18S, color OD value 0.75 (compared with black), ink dispersion time 60S, gloss 30, whiteness (ISO) 82%.

Embodiment 2

[0035] The softwood NBKP pulp, bleached hardwood pulp LBKP pulp, P-RCAPMP pulp, and DIP pulp that have been beaten to appropriate freeness were prepared at a ratio of 15:15:50:20 to prepare 644Kg mixed pulp, and 106 kg of filler and appropriate Other chemical additives are formulated into paper material, which is formed by wire forming, composite pressing, and pre-drying; film coating (paint amount 250kg), infrared drying, post-drying, soft calendering finishing, winding, and rewinding Users require 1000kg of high-speed rotary light-weight coated digital paper of specifications and dimensions. The net concentration of papermaking is 0.75%, the moisture content of the paper roll is 6.5%, and the weight of the high-speed rotary light-weight coated digital paper is 70g / m 2 , Black optical density OD value 1.30, drying time 18S, color OD value 0.79 (compared with black), ink dispersion time 60S, gloss 38, whiteness (ISO) 86%.

Embodiment 3

[0037] The softwood NBKP pulp, bleached hardwood pulp LBKP pulp, P-RCAPMP pulp, and DIP pulp that have been beaten to appropriate freeness were prepared at a ratio of 15:20:47:18 to prepare 654Kg mixed pulp, and 106 kg of fillers and appropriate Other chemical additives are formulated into paper material, which is formed by wire forming, composite pressing, and pre-drying; film coating (paint amount 240kg), infrared drying, post-drying, soft calendering finishing, winding, and rewinding Users require 1000kg of high-speed rotary light-weight coated digital paper of specifications and dimensions. The net concentration of papermaking is 0.75%, the moisture content of the paper roll is 6.5%, and the weight of the high-speed rotary light-weight coated digital paper is 70g / m 2 , The black optical density OD value is 1.25, the drying time is 18S, the color OD value is 0.76 (compared with black), the ink dispersion time is 60S, the gloss is 35, and the whiteness (ISO) is 84%.

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Abstract

The invention discloses a manufacturing technology of a high speed rotary light weight coating digital paper. The manufacturing technology comprises steps of pulping bleached sulfate softwood pulp (NBKP), chemically preprocessed, grinded, chemically processed, and alkaline hydrogen peroxide thermo-mechanical pulp (P-RC APMP), bleached hardwood pulp (LBKP), and deinked pulp (DIP), and blending the pulp; wherein the weight ratio of NBKP to LBKP to P-RC APMP to DIP is 10-30: 10-30: 40-50: 15-25. A paint is prepared from 20 to 80 pph of special porcelain clay, 80 to 200 pph of heavy calcium carbonate, 5 to 10 pph of special polyacrylamide, 4 to 10 pph of special nano starch, 4 to 10 pph of calcium chloride, and 0.5 to 5 pph of special cationic dispersant. The manufacturing technology is simple. The produced high speed rotary light weight coating digital paper has the advantages that the paper surface strength is good, the indexes of the digital paper such as bulk, deflection, light resistance, water resistance, and the like, are better than those of high speed rotary light weight coating digital paper, which is obtained by blending all chemical pulps, the paper is smooth and flat, the printed color is saturated and bright, the printed images are clear, and the quality is the same as that of imported products.

Description

Technical field [0001] The invention relates to a manufacturing process of high-speed rotating light-weight coated digital paper. Background technique [0002] High-speed rotary digital paper is a new product developed by Japan, Europe and the United States and other countries in recent years to meet the requirements of the development of high-speed digital color printing industry. It can be used for special requirements of high-end magazines, advertisements, pictorials and digital printing through special coating treatment and mechanical finishing on the surface of the paper pages. It is a very important development. Rapid, the paper grade with the fastest market growth rate. However, China does not have self-produced high-speed rotating light-weight coated digital paper. [0003] The high-speed rotary light-weight coated digital paper of the present invention not only meets the requirements of the high-speed digital color printing development industry, but also satisfies the of...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): D21H15/10D21H11/14D21H17/29D21H17/67D21H21/28D21H19/40D21H19/38D21H19/56D21H19/54D21H19/64D21H19/44
CPCD21H11/14D21H15/10D21H17/29D21H17/67D21H19/385D21H19/40D21H19/44D21H19/54D21H19/56D21H19/64D21H21/28
Inventor朱宏伟李甘霖周训富林本平冀振华李丹张志三
OwnerYUEYANG FOREST & PAPER CO LTD