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Making method of high-bulk and high-gloss two-side coated art printing paper

A bulky, high-gloss technology, applied in pulp beating methods, pulp beating/refining methods, paper, etc., can solve problems such as low gloss and smoothness, and large paper roughness, and achieve high gloss and high Effect of smoothness, good bending stiffness

Active Publication Date: 2020-02-11
HAINAN JINHAI PULP & PAPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is also a small part that can meet the requirements of high bulk, but due to the use of a higher proportion of mechanical pulp, the resulting paper has a greater roughness, lower gloss and smoothness

Method used

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  • Making method of high-bulk and high-gloss two-side coated art printing paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for making double-sided coated paper with high bulkiness and high gloss, comprising the following steps:

[0031] 1) Slurry preparation: select alkaline hydrogen peroxide mechanical pulp, and use a deflagger (inlet and outlet pressure of the deflaker: 2.0-4.0bar) to carry out a slurry treatment on the pulp to obtain a freeness of 300ml and a bulk thickness of 3.1cm 3 / g of pulp; bleached kraft hardwood pulp is subjected to loose pulping and refining to obtain a freeness of 400ml and a bulk of 1.26cm 3 / g of pulp; bleached kraft softwood pulp is subjected to loosening and refining to obtain a freeness of 405ml and a bulk of 1.25cm 3 / g of slurry; bleached kraft hardwood pulp, bleached kraft softwood pulp and alkaline hydrogen peroxide mechanical pulp are respectively 50%, 10%, 40% by weight, and mixed pulping;

[0032] 2) Wet end: After the slurry is mixed according to the proportion of step 1), add 14% ground calcium carbonate (particles with a particle size l...

Embodiment 2

[0041] A method for making double-sided coated paper with high bulkiness and high gloss, comprising the following steps:

[0042] 1) Slurry preparation: select alkaline hydrogen peroxide mechanical pulp, and use a deflaker (inlet and outlet pressure of the deflaker: 2.0 to 4.0bar) to carry out a slurry treatment on the pulp to obtain a freeness of 400ml and a bulk thickness of 3.3cm 3 / g of pulp; bleached kraft broad-leaved wood pulp is dispersed and refined to obtain a freeness of 500ml and a bulk of 1.35cm 3 / g of pulp; bleached kraft softwood pulp is subjected to loosening and refining to obtain a freeness of 500ml and a bulk of 1.33cm 3 / g of slurry; bleached kraft hardwood pulp, bleached kraft softwood pulp and alkaline hydrogen peroxide mechanical pulp are respectively 60%, 20%, and 30% by weight, and are mixed and prepared;

[0043] 2) Wet end: After the slurry is mixed according to the proportion of step 1), add 10% ground calcium carbonate (particles with a particle ...

Embodiment 3

[0052] A method for making double-sided coated paper with high bulkiness and high gloss, comprising the following steps:

[0053] 1) Slurry preparation: select alkaline hydrogen peroxide mechanical pulp, and use a deflaker (inlet and outlet pressure of the deflaker: 2.0 to 4.0bar) to carry out a slurry treatment on the pulp to obtain a freeness of 400ml and a bulk thickness of 3.3cm 3 / g of pulp; bleached kraft broad-leaved wood pulp is dispersed and refined to obtain a freeness of 500ml and a bulk of 1.35cm 3 / g of pulp; bleached kraft softwood pulp is subjected to loosening and refining to obtain a freeness of 500ml and a bulk of 1.33cm 3 / g of slurry; bleached kraft hardwood pulp, bleached kraft softwood pulp and alkaline hydrogen peroxide mechanical pulp are respectively 53%, 12%, and 35% by weight, and are mixed and prepared;

[0054] 2) Wet end: After the slurry is mixed according to the proportion of step 1), add 13% ground calcium carbonate (particles with a particle ...

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Abstract

The invention discloses a making method of high-bulk and high-gloss two-side coated art printing paper. Through reasonable pulp model-selection, sulfate coniferous wood pulp, bleached sulfate broadleaf wood pulp and alkaline hydrogen peroxide mechanical pulp with 100% high bulk are adopted, the proportion of all the pulp is strictly controlled, a specific coating formula is adopted, based on single-layer laminated base paper making, multi-layer coating is conducted through a unique MSP (double-sided top coating) and scraper coating process on a high-speed paper machine with the machine speed being up to 1300 m / min, and parameters such as the knife pressure and the knife angles of all coating heads are adjusted, so that the gram weight of finally-made finished paper is about 170 g / m2, the bulk is greater than 1 cm3 / g, the glossiness is 60-70%, the smoothness is greater than 600 s, and the bending stiffness is greater than 2.4 mNm.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a method for making double-sided coated paper with high bulkiness and high gloss. Background technique [0002] Double-sided coated paper is characterized by smooth and smooth paper surface, high smoothness and good gloss, which is beneficial to obtain exquisite and clear patterns and characters after printing. It is mainly used for printing high-end books, periodicals and magazines, various exquisite product advertisements, color Pictorial, children's books and other printed matter. As a key indicator of coated paper, bulk thickness determines the opacity and stiffness of coated paper to a large extent, and bulk thickness has an important impact on product cost and product performance, so it has attracted the attention of consumers. Most of the high-bulk double-sided coated paper on the market is made by fourdrinier paper with a low speed of the paper machine, while the bul...

Claims

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Application Information

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IPC IPC(8): D21D1/02D21D1/20D21G1/00D21H11/04D21H17/29D21H17/67D21H19/80
CPCD21D1/02D21D1/20D21H11/04D21H17/29D21H17/675D21H19/80D21G1/00D21G9/009D21F11/00D21H11/08D21H19/385D21H19/54D21H23/34
Inventor 谢碧爱梁昌良邵治涛
Owner HAINAN JINHAI PULP & PAPER
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