CN104746380A

CN104746380A - Production process of building template base paper with high gloss, high strength and low gram weight

Info

Publication number: CN104746380A
Application number: CN201510113464.8A
Authority: CN
Inventors: 王友成; 张安钵; 周景蓬
Original assignee: SHANDONG HUATAI PAPER CO Ltd
Current assignee: SHANDONG HUATAI PAPER CO Ltd
Priority date: 2015-03-16
Filing date: 2015-03-16
Publication date: 2015-07-01
Anticipated expiration: 2035-03-16
Also published as: CN104746380B

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

High glaze high-intensity low-gramweight building cyclostyle base paper production technology

Technical field

The present invention relates to field of papermaking processes, specifically a kind of high glaze high-intensity low-gramweight building cyclostyle base paper production technology.

Background technology

Building cyclostyle base paper is real estate construction market assistant product, is the middle base material making building template paper, requires that wet strength is high, and suction colloidality is good.At present, the building cyclostyle base paper on market mainly utilizes domestic old and useless newspaper through simple processing, grammes per square metre 65g/m ², smoothly low, thickness is low, and being processed into building template paper needs suction glue amount large.

Summary of the invention

For solving the above-mentioned defect of prior art, the present invention proposes the high glaze high-intensity low-gramweight building cyclostyle base paper production technology that a kind of technique is simple, with low cost.

Technical scheme of the present invention comprises the following steps:

(1), with slurry: by pulp from decoloured waste paper, not bleaching aspen mechanical slurry, not bleach aspen mechanical slurry according to mass ratio 70-80%:20-30% with slurry, and adds efficient wet strength agent according to 20-30kg/ ton oven dry stock in process with slurry; The preparation process of described pulp from decoloured waste paper is as follows: U.S. useless 8# is through rotary drum hydrabrusher, remove large stretch of impurity, through high concentration desanding device and compound scalping system, remove the impurity that weight is larger, the less impurity of weight is removed again through too low dense desander, through deinking flotation, removal unit sub ink, namely makes the Deinking Pulp that intensity is high;

(2), manufacture paper with pulp: slurry step (1) be made into directly is molded into paper through head box online, then carries out press polish by calender high temperature to be closed pressurization.

Such scheme also comprises: described do not bleach aspen mechanical slurry be, after utilizing poplar to cut into slices, make through preimpregnation, defibrination.

Compared with prior art, the feature of this technique is as follows:

1, in process with slurry, add the efficient wet strength agent of 20-30kg/ ton paper, consumption is low, and slaking is fast, and intensity is high, and after ensure that into paper, wet tensile index is at 6.5-9.5 N.m/g, and does not affect suction colloidality energy;

2, add primary aspen mechanical of not bleaching in manufacturing paper with pulp to starch, utilize aspen mechanical slurry kind to remain lignin, fiber is shorter, can increase bulk, improves water absorbing properties;

3, manufacture paper with pulp follow-up workshop section, calender press polish adopts high temperature to close the mode of pressurization, improve into paper smoothness, building cyclostyle base paper conventional on market is in order to ensure bulk, and without press polish process, smoothness only has 0-2s, and the smoothness 8-12s of this explained hereafter, due to level and smooth height, after making template, press polish smoothness is high, and quality scale is high;

4, because bulk is high, reach 110-120 um, the building cyclostyle base paper grammes per square metre of this explained hereafter controls at 60-63g, the same with other product bulks, 2-5g lower than the average grammes per square metre on market, grammes per square metre reduces, and user tries out in process and can reduce body paper consumption 3-7%;

5, because smoothness is high, can ensure to inhale glue even, glue face is smoothly high, makes Die plate paper, and after extruding with plank combined high temperature, the building template glossiness of formation is high, and appearance looks elegant is subject to the welcome in market;

6, adopt U.S. useless 8# can improve body paper intensity, when high wet strength and body paper intensity, continuous paper in immersing glue process can be ensured; Due to, 8# waste paper fibre is long, and in the middle of Die plate paper, base material is formed and firmly carries isolation network, and after ensureing impregnation, sizing material mainly concentrates on template body paper two sides, unduly permeates, and can reduce and inhale glue amount, reduces Die plate paper cost.

Detailed description of the invention

The present invention is done further open with specific embodiment below.

A kind of high glaze high-intensity low-gramweight building cyclostyle base paper production technology, comprises the following steps:

(1), with slurry: by pulp from decoloured waste paper, not bleaching aspen mechanical slurry, not bleach aspen mechanical slurry according to mass ratio 70-80%:20-30% with slurry, and adds efficient wet strength agent according to 20-30kg/ ton oven dry stock in process with slurry; The preparation process of described pulp from decoloured waste paper is as follows: U.S. useless 8# is through rotary drum hydrabrusher, remove large stretch of impurity, through high concentration desanding device and compound scalping system, remove the impurity that weight is larger, the less impurity of weight is removed again through too low dense desander, through deinking flotation, removal unit sub ink, namely makes the Deinking Pulp that intensity is high; Described do not bleach aspen mechanical slurry be, after utilizing poplar to cut into slices, make through preimpregnation, defibrination.

The technical indicator of building cyclostyle base paper prepared by above-mentioned technique is: wet tensile index is at 6.5-9.5 N.m/g; Smoothness 8-12s; Bulk 110-120 um; Used by reality, when high wet strength and body paper intensity, continuous paper in immersing glue process can be ensured; Due to, 8# waste paper fibre is long, and in the middle of Die plate paper, base material is formed and firmly carries isolation network, and after ensureing impregnation, sizing material mainly concentrates on template body paper two sides, unduly permeates, and can reduce and inhale glue amount, reduces Die plate paper cost.And reduce building template paper paper consumption and sizing material consumption because grammes per square metre is low, bulk is high, save natural resources.

Claims

1. a high glaze high-intensity low-gramweight building cyclostyle base paper production technology, is characterized in that, comprise the following steps:

With slurry: by pulp from decoloured waste paper, not bleaching aspen mechanical slurry, not bleach aspen mechanical slurry according to mass ratio 70-80%:20-30% with slurry, and adds efficient wet strength agent according to 20-30kg/ ton oven dry stock in process with slurry; The preparation process of described pulp from decoloured waste paper is as follows: U.S. useless 8# is through rotary drum hydrabrusher, remove large stretch of impurity, through high concentration desanding device and compound scalping system, remove the impurity that weight is larger, the less impurity of weight is removed again through too low dense desander, through deinking flotation, removal unit sub ink, namely makes the Deinking Pulp that intensity is high;

Manufacture paper with pulp: slurry step (1) be made into directly is molded into paper through head box online, then carries out press polish by calender high temperature to be closed pressurization.

2. high glaze high-intensity low-gramweight building cyclostyle base paper production technology according to claim 1, is characterized in that, described do not bleach aspen mechanical slurry be, after utilizing poplar to cut into slices, make through preimpregnation, defibrination.