Preparation method of high-strength and high-moisture-proof regenerated white board paper

A whiteboard paper, high-strength technology, applied in the field of papermaking, can solve the problems of limited strength, easy to tear or break, unable to form high strength, etc., to achieve the effect of low cost, improved tearing degree, and improved overall strength

Inactive Publication Date: 2020-10-13
苗广厚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Since the white board paper is mostly composed of pulp fibers, its strength is limited, and it is easy to tear or break when it is bent in use. The bottom layer is generally used to improve the strength, so the raw material requirements are relatively high. characteristics, the strength is limited, so it cannot form a higher strength

Method used

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  • Preparation method of high-strength and high-moisture-proof regenerated white board paper
  • Preparation method of high-strength and high-moisture-proof regenerated white board paper
  • Preparation method of high-strength and high-moisture-proof regenerated white board paper

Examples

Experimental program
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Effect test

Embodiment 1

[0043] A method for preparing high-strength and high-moisture-proof recycled white board paper, the specific steps are as follows:

[0044]S1, the raw materials of the surface layer 10, the lining layer 11, and the core layer 13 are respectively added with chemical agents to disintegrate to obtain the corresponding slurry, wherein the above-mentioned raw materials can be selected according to actual needs, and waste paper pulp is used in this embodiment;

[0045] S2, after disintegrating, dispersing, and bleaching the mango tree fiber of 25 parts by weight, mix and stir with the polylactic acid fiber through a stirring device, gradually add 15 parts by weight of Gibber fiber during the stirring process, and the stirring speed is 600r / min, controlled The fineness of polylactic acid fiber is 0.15dpf, and the length is 10mm, and the mixed slurry is obtained; since the length of polylactic acid fiber is longer, the length of mango tree fiber is shorter, so high stirring is conduciv...

Embodiment 2

[0054] A method for preparing high-strength and high-moisture-proof recycled white board paper, the specific steps are as follows:

[0055] S1, the raw materials of the surface layer 10, the lining layer 11, and the core layer 13 are respectively added with chemical agents to disintegrate to obtain the corresponding slurry, wherein the above-mentioned raw materials can be selected according to actual needs, and waste paper pulp is used in this embodiment;

[0056] S2, after disintegrating, dispersing, and bleaching the mango tree fiber of 30 parts by weight, mix and stir with the polylactic acid fiber through a stirring device, gradually add 20 parts by weight of Gibber fiber during the stirring process, and the stirring speed is 700r / min, controlled The fineness of the polylactic acid fiber is 0.2dpf, and the length is 15mm, and the mixed slurry is obtained; because the length of the polylactic acid fiber is longer, the length of the mango tree fiber is shorter, so a high degr...

Embodiment 3

[0065] A method for preparing high-strength and high-moisture-proof recycled white board paper, the specific steps are as follows:

[0066] S1, the raw materials of the surface layer 10, the lining layer 11, and the core layer 13 are respectively added with chemical agents to disintegrate to obtain the corresponding slurry, wherein the above-mentioned raw materials can be selected according to actual needs, and waste paper pulp is used in this embodiment;

[0067] S2, after disintegrating, dispersing, and bleaching the mango tree fiber of 27 parts by weight, mix and stir with the polylactic acid fiber through a stirring device, gradually add 17 parts by weight of Gibber fiber during the stirring process, and the stirring speed is 650r / min, controlled The fineness of polylactic acid fiber is 0.17dpf, and the length is 13mm, and the mixed slurry is obtained; since the length of polylactic acid fiber is longer, the length of mango tree fiber is shorter, so high stirring is conduci...

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Abstract

The invention discloses a preparation method of high-strength and high-moisture-proof regenerated white board paper, and belongs to the field of papermaking. The method comprises the following steps of: S1, a chemical agent is added into raw materials of a surface layer, a lining layer and a core layer for disintegrating to obtain corresponding slurry; S2, 25-30 parts by weight of mango tree fibers are crushed, dispersed and bleached and then mixed and stirred with polylactic acid fibers through a stirring device, and 15-20 parts by weight of ceiba pentandra fibers are gradually added in the stirring process to obtain mixed pulp; S3, 10-13 parts by weight of mineral fibers are diluted with water to 20%-30% to obtain mineral fiber pulp, the mixed pulp is stirred at the speed of 150-200 r / min, the mineral fiber pulp is gradually added, and bottom-layer pulp is prepared; and S4, pulp making is carried out on the pulp prepared in the step S1 and the bottom-layer pulp, and drying is performed to obtain the white board paper. The white board paper has the following beneficial effects that: 1, the tearing strength of the white board paper can be improved; 2, the overall strength is improved; and 3, the length-diameter ratio of the mineral fibers is high, and good economic benefits can be achieved.

Description

[0001] This application is a divisional application, the original patent number is: 201811099378.6, the application date is September 20, 2018, and the title of the invention is: a high-strength, high-moisture-proof recycled whiteboard and its production process. technical field [0002] The invention relates to the field of papermaking, in particular to a method for preparing high-strength and high-moisture-proof regenerated white board paper. Background technique [0003] White board paper is a kind of cardboard with a white and smooth front and a gray background on the back. This kind of cardboard is mainly used for single-sided color printing to make cartons for packaging, or for design and handmade products. [0004] White board paper generally includes a surface layer, a lining layer, a core layer and a bottom layer, and different layers of pulp are made on a multi-drum multi-dryer paper machine or a four-drill hybrid board machine. The fiber ratio of each layer of pap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21F13/00
CPCB32B5/028B32B5/08B32B9/002B32B9/06B32B13/08B32B29/002B32B29/02B32B29/04B32B2262/0253B32B2262/0276B32B2262/067B32B2262/10B32B2262/14B32B2264/0214B32B2307/3065B32B2307/582B32B2307/7163D21F11/00D21H11/12D21H13/14D21H13/24D21H13/36D21H27/10D21H27/30Y02W30/64
Inventor 苗成仁
Owner 苗广厚
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