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Production process of low-basis-weight damp-proof waterproof coveying paper

A production process and technology of protective paper, which is applied in the direction of surface covering paper, paper, papermaking, etc., can solve the problems of high cost, low quantitative moisture-proof and waterproof face-covering paper, etc. The effect of pollution

Inactive Publication Date: 2017-11-03
山西强伟纸业有限公司
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Problems solved by technology

[0004] The present invention aims at the problem of the influence of additives on the performance of the gypsum board face paper and the high cost in the production process of the gypsum board face paper in the prior art, and provides a production process for the low-quantity moisture-proof and waterproof face paper

Method used

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  • Production process of low-basis-weight damp-proof waterproof coveying paper

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Embodiment Construction

[0014] A kind of production technology of low-quantity moisture-proof and waterproof face-protecting paper, comprises the following steps:

[0015] The first step is pulping, which is divided into two production lines: deinked pulp and OCC production line. The process parameters of the deinking pulp production line are: the ratio of raw materials is 50% of 9# American waste + 50% of national newspaper, and then they are evenly mixed and then added to the drum pulper, and deinking chemicals are added: deinking agent 0.6kg / ton of waste paper , hydrogen peroxide 15kg / ton of waste paper, sodium hydroxide 6kg / ton of waste paper, sodium silicate 3kg / ton of waste paper, in the pulper, the waste paper reacts with chemicals and beats to form a thick pulp with a weight concentration of 4%. Heavy impurities in the slurry, such as iron nails, stones, glass, etc., are removed through the high-concentration slag remover, and then diluted to a concentration of about 3% in the slurry storage ...

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Abstract

The invention relates to a production process of low-basis-weight damp-proof waterproof coveying paper, which belongs to the technical field of the preparation of gypsum board coveing paper, and can solve the problems in the prior art that the performance of the gypsum board coveing paper is influenced and the cost is high due to the addition of additives in the gypsum board coveing paper production process. The production process comprises two steps, i.e. pulping and papermaking, wherein in a papermaking OCC production line, a process for pulping short fibers at a high concentration is adopted, the papermaking adopts four-layer mesh composite molding, deinked pulp is smeared on a surface layer, four layers of pulp are injected onto a four-layer molding mesh by virtue of a pulp flowing box, then the pulp is subjected to one vacuum pressing, twice large-roller pressing, primary drying, surface gluing, later drying and winding, and finally the pulp is rewound into paper rolls with different specifications by virtue of a rewinding machine. The production process saves the energy, reduces the pollution, improves the paper strength, reduces the basis weight of the paper, and improves the damp-proof and waterproof characteristics of the paper.

Description

technical field [0001] The invention belongs to the technical field of preparation of face-protecting paper for gypsum boards, and in particular relates to a production process of low-quantity moisture-proof and waterproof face-protecting paper. Background technique [0002] Gypsum board is mainly used for engineering or home decoration. Because of its good toughness (suitable for special-shaped roofs) and relatively cheap price, it has always been the product of choice for the majority of decoration masters and consumers. With the improvement of people's living standards, people are interested in The types of gypsum board demand are also gradually increasing. It must not only look good, but also have multiple functions to be suitable for use in different places. The emergence of moisture-proof and waterproof face protection paper also shows the market demand. This kind of gypsum board can be used in basements. Or places with high indoor relative air humidity and high constr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/18D21H11/14D21H15/10D21H15/02D21H17/29D21H21/10D21H21/16D21H17/66D21F11/08D21C5/02D21B1/34D21B1/32
CPCD21B1/32D21B1/345D21C5/025D21F11/08D21H11/14D21H15/02D21H15/10D21H17/29D21H17/66D21H21/10D21H21/16D21H27/18Y02W30/64
Inventor 李伟
Owner 山西强伟纸业有限公司
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