A kind of coated paper and its preparation method

A coated paper and coating technology, applied in papermaking, coating, paper coating, etc., can solve the problems of increased cost of coated paper, poor deinking effect, high energy consumption, etc., achieve high deinking efficiency and reduce environmental damage and loss, low energy consumption effect

Active Publication Date: 2020-09-18
ZHEJIANG GAODU ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention: the current deinking pulp raw material is office waste paper, which has poor deinking effect, high energy consumption, and increases the cost of coated paper. At the same time, the existing coated paper has fractures, Problems of defects such as peeling, providing a kind of coated paper and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0027] The preparation method of coated paper base paper comprises the steps:

[0028] A. Take sodium silicate and add distilled water at a mass ratio of 3:20, stir and mix at 50~55°C for 1~2h, then add 20~30% of the mass of sodium silicate with 10% hydrochloric acid, stir for 30~40min, Filter, take the filter residue, wash with distilled water 3 to 4 times, dry, crush through a 150-mesh sieve, and collect the sieved particles;

[0029] B. Take the sieved particles and add silica sol at a mass ratio of 1:3, place them in a granulator to make particles with a diameter of 5~8mm, take the particles and age them at 25~30°C for 3~4 days, and then dry them at 75~80 Dry at ℃ for 1~2h, then raise the temperature to 380~400℃ and keep it for 15~20min to get the treated particles;

[0030] C. Take glutaraldehyde and add distilled water at a mass ratio of 1:20~25 to obtain a soaking solution. Take the treated particles and soak them in the soaking solution for 4~5 hours, take out the soa...

Embodiment 1

[0039] Silica sol: Hubei Haili Tianheng Nano Technology Co., Ltd.

[0040] Printed waste paper: Taken from office laser printing waste paper with ink on top.

[0041] Calcium carbonate: purchased from Changzhou Calcium Carbonate Co., Ltd., with a solid content of 73%; china clay: the main component is aluminum silicate, purchased from China Kaolin Co., Ltd., with a solid content of 98%.

[0042] A coated paper comprises coated paper base paper and coated paper coating.

[0043] The preparation method of coated paper base paper comprises the steps:

[0044] A. Take sodium silicate and add distilled water according to the mass ratio of 3:20, stir and mix at 50°C for 1 hour, then add 20% of the mass of sodium silicate and 10% hydrochloric acid, stir for 30 minutes, filter, take the filter residue, and wash with distilled water 3 times, dried, crushed through a 150-mesh sieve, and collected the sieved particles;

[0045] B. Take the sieved particles and add silica sol at a mass...

Embodiment 2

[0055] Silica sol: Hubei Haili Tianheng Nano Technology Co., Ltd.

[0056] Printed waste paper: Taken from office laser printing waste paper with ink on top.

[0057] Calcium carbonate: purchased from Changzhou Calcium Carbonate Co., Ltd., with a solid content of 73%; china clay: the main component is aluminum silicate, purchased from China Kaolin Co., Ltd., with a solid content of 98%.

[0058] A coated paper comprises coated paper base paper and coated paper coating.

[0059] The preparation method of coated paper base paper comprises the steps:

[0060] A. Take sodium silicate and add distilled water according to the mass ratio of 3:20, stir and mix at 55°C for 2 hours, then add 30% of the mass of sodium silicate and 10% hydrochloric acid, stir for 40 minutes, filter, take the filter residue, and wash with distilled water 4 times, dried, crushed through a 150-mesh sieve, and collected the sieved particles;

[0061] B. Take the sieved particles and add silica sol at a mas...

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Abstract

The invention discloses coated paper and a preparation method thereof, and belongs to the field of paper products. Glutaraldehyde is adopted to fix mixed enzymes of cellulase and alpha-amylase on silica gel, the fixed enzymes are adopted to deink waste printing paper, and coarse-pore microspherical silica gel which is prepared by using sodium silicate and hydrochloric acid is used as a raw material, and silica sol which is adopted as a binder is added into the coarse-pore microspherical silica gel; the mixture of the silica gel and silica sol is made into pellets, one end of glutaraldehyde isattached to an amino group of the enzymes, and the other end is attached to a hydroxyl group of the silica gel, so that immobilized enzymes are achieved, the stability of the enzymes are ensured, theutilization rate for removal is improved, separation and recycling are facilitated, and the cost for preparing base paper of the coated paper is reduced; the preparation method comprises the steps of:adopting styrene, methyl acrylate, divinyl benzene and the like as raw materials, preparing composite emulsion by using a non-soap seeded emulsion polymerization technology, coating coating color ofthe coated paper on the base paper of the coated paper on a coating machine, and performing drying to obtain the coated paper.

Description

technical field [0001] The invention belongs to the field of paper products, and in particular relates to a coated paper and a preparation method thereof. Background technique [0002] Coated paper is to coat a layer of coating (coating color) on the base paper, so that the paper has good optical properties and printing performance. Its main uses are: publishing paper for printing magazines, books, etc., and printing paper for trademarks, packaging, catalogs, etc. , the ratio of the two is about 1:3. Coated paper can be divided into: coated paper, coated paper, lightweight coated paper, in addition to special coated paper such as burnished coated paper. With the increasing competition in the coated paper market, the selling price of coated paper tends to be stable, but the price of raw materials for coated paper is rising. How to reduce the amount of high-cost raw materials on the premise of ensuring the quality of coated paper, Increasing the proportion of waste paper ra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H11/14D21C5/02D21H19/38D21H19/40D21H19/58D21H19/46D21H19/48D21H19/64D21H19/54D21H21/18D21H21/14D21H19/00
CPCD21C5/02D21C5/027D21H11/14D21H19/00D21H19/385D21H19/40D21H19/46D21H19/48D21H19/54D21H19/58D21H19/64D21H21/14D21H21/18Y02W30/64
Inventor 朱东洋庄文琴刘红妹
Owner ZHEJIANG GAODU ENVIRONMENTAL PROTECTION TECH CO LTD
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