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High gloss, high strength and low gram weight construction formwork base paper production process

A construction template and production process technology, which is applied in the direction of reinforcing agent addition, textiles and papermaking, etc., can solve the problems of large glue absorption, low smoothness, and low thickness of building template paper, and achieve uniform glue absorption, high smoothness, and high quality High grade effect

Active Publication Date: 2017-04-05
SHANDONG HUATAI PAPER
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Problems solved by technology

At present, the base paper for construction templates on the market is mainly produced by simple processing of domestic waste newspapers, with a weight of 65g / m 2 , smooth and low, low thickness, processing into building template paper requires a large amount of glue absorption

Method used

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Embodiment Construction

[0015] The present invention will be further disclosed with specific embodiments below.

[0016] A production process of base paper for building formwork with high gloss, high strength and low grammage, comprising the following steps:

[0017] (1) Pulping: Blend waste paper deinked pulp and unbleached poplar mechanical pulp according to the mass ratio of 70-80%: 20-30% unbleached poplar mechanical pulp, and in the pulping process according to 20- Add high-efficiency wet-strength agent to 30kg / ton dry pulp; the preparation process of the waste paper deinking pulp is as follows: US waste 8# passes through a rotary drum hydraulic pulper to remove large pieces of impurities, and passes through a high-concentration desander and a composite coarse screen system to remove heavy impurities, and then go through a low-concentration desander to remove light impurities, and go through deinking flotation to remove part of the ink to make deinked pulp with high strength; the unbleached popl...

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Abstract

The invention discloses a production process of building template base paper with high gloss, high strength and low gram weight. The process comprises the steps that in a pulp mixing step, wastepaper deinked pulp and unbleached cottonwood mechanical pulp are mixed according to the mass ratio of the (70-80%): (20-30%) and a high-efficient wet strength agent is added according to 20-30kg / tons of dry pulp in a pulp mixing process, wherein the preparation process of the wastepaper deinked pulp comprises the following steps, removing a large quantity of impurities by using AOCC 8# through a rotating drum hydrapulper, removing heavy impurities through a high-concentration desander and a composite coarse screening system, removing relatively light impurities through a low-concentration desander, and removing part of oil ink by means of deinking floatation to prepare the deinking pulp with high strength; and in a step of papermaking, pulps prepared in the step (1) directly pass through an upper net of a pulp flowing box to be molded into paper, and the paper is calendered by using a calendering machine at high temperature in an enclosed state. The production process is simple; the produced building template base paper has the advantages of high smoothness degree, high strength, low gram weight and high bulkness.

Description

technical field [0001] The invention relates to the field of papermaking technology, in particular to a production technology of base paper for building formwork with high gloss, high strength and low grammage. Background technique [0002] Building template base paper is an auxiliary product in the real estate construction market, and is the intermediate base material for making building template paper. It requires high wet strength and good glue absorption. At present, the base paper for construction templates on the market is mainly produced by simple processing of domestic waste newspapers, with a weight of 65g / m 2 , smooth and low, low thickness, processing into building template paper requires a large amount of glue absorption. Contents of the invention [0003] In order to solve the above-mentioned defects in the prior art, the present invention proposes a production process of high-gloss, high-strength, low-gram-weight building formwork base paper with simple proc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H15/10D21H21/20
Inventor 王友成张安钵周景蓬
Owner SHANDONG HUATAI PAPER
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