A kind of production method of base paper for heat-sensitive plate

A production method and base paper technology, applied in special paper, papermaking, paper, etc., can solve the problems that are not conducive to improving the porosity of paper, reducing the thickness of paper, and the difficulty of recycling broken paper.

Active Publication Date: 2020-10-20
HEBEI AMUSEN FILTER PAPER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the two-component polyester ultra-short fiber of this sheath-core structure is expensive, which is not conducive to the cost reduction of heat-sensitive plate base paper; at the same time, in order to ensure the effective combination between fibers, the two-component polyester ultra-short fiber In use, the drying temperature of the paper needs to reach the melting temperature of the outer layer polymer of the two-component polyester ultra-short fiber, and the fiber is hot-melted, which reduces the fiber diameter and reduces the thickness of the paper, which is not conducive to increasing the porosity of the paper; moreover The most important thing is that the melting of the outer layer of the fiber brings the stickiness of the paper to the dryer cylinder and the drying net, and frequent paper breaks, resulting in low production efficiency
The covalent bonds between the bonded fibers also make it difficult to recycle broken paper

Method used

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  • A kind of production method of base paper for heat-sensitive plate
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) The linear structure PET fiber and the T-type PET fiber are mixed according to the ratio of 9:1 by mass and thawed to a beating degree of 7°SR for later use, and the Beimu paddle is beaten to a beating degree of 42°SR, and the wet weight is 10g for later use;

[0039] (2) Mix 70% mixed PET fiber and 30% Beimu wood pulp in the pulp mixing tank, add dispersant and enter the pulp forming tank for standby.

[0040] 2. Paper flow and wet paper web forming

[0041] (1) After the slurry in the slurry tank is diluted by the slurry pump, it passes through the desander to remove heavy impurities, and after the second dilution, it uses the pressure screen to remove coarse impurities. The purified slurry enters the double channel through two pipelines Headbox; control the slurry volume ratio of the two pipelines to be 1:0.8, and the flow velocity ratio to be 1:1.01.

[0042] (2) The double-channel headbox slurry is mixed after passing through the bleaching sheet, dehydrated an...

Embodiment 2

[0049] 1. Slurry preparation

[0050] (1) Mix linear structure PET fiber and T-type PET fiber according to the ratio of mass ratio 8:2 and beat until the degree of beating is 10 ° SR for later use, and Beimu paddle is beaten until the degree of beating is 47 ° SR, and the wet weight is 8g for later use;

[0051] (2) Mix 65% mixed PET fiber and 35% Beimu wood pulp in the pulp mixing tank, add dispersant and enter the pulp forming tank for standby.

[0052] 2. Paper flow and wet paper web forming

[0053] (1) After the slurry in the slurry tank is diluted by the slurry pump, it passes through the desander to remove heavy impurities, and after the second dilution, it uses the pressure screen to remove coarse impurities. The purified slurry uses two pipelines to enter the double channel respectively. Headbox; control the slurry volume ratio of the two pipelines to be 1:1.2, and the flow velocity ratio to be 1:1.03.

[0054] (2) The double-channel headbox slurry is mixed after pa...

Embodiment 3

[0061] 1. Slurry preparation

[0062] (1) The linear structure PET fiber and the T-type PET fiber are mixed according to the ratio of mass ratio 7:3 until the beating degree is 8°SR for later use, and the Beimu paddle is beaten until the beating degree is 45°SR, and the wet weight is 8.8g for later use;

[0063] (2) Mix 60% mixed PET fiber and 40% Beimu wood pulp in the pulp mixing tank, add dispersant and enter the pulp forming tank for standby.

[0064] 2. Paper flow and wet paper web forming

[0065] (1) After the slurry in the slurry tank is diluted by the slurry pump, it passes through the desander to remove heavy impurities, and after the second dilution, it uses the pressure screen to remove coarse impurities. The purified slurry uses two pipelines to enter the double channel respectively. Headbox; control the slurry volume ratio of the two pipelines to be 1:1, and the flow velocity ratio to be 1:1.03. .

[0066] (2) The double-channel headbox slurry is mixed after p...

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Abstract

The invention discloses a production method of thermal-sensitive stencil base paper. The production method comprises the following steps: firstly, preparing pulp which is a mixture of linear-structured PET fibers, T type PET fibers and north wood pulp fibers; then diluting, purifying and screening the pulp, dividing the pulp into two parts which enter two pulp pipelines and flow into one head boxthrough the two pulp pipelines, and then performing wet web forming; and finally, drying the wet web to obtain the thermal-sensitive stencil base paper. The production method disclosed by the invention obviously improves the quality of a domestic thermal-sensitive stencil paper product and improves the printing effect and durable number of the stencil paper product.

Description

technical field [0001] The invention belongs to the field of special paper, and in particular relates to a method for producing base paper for a heat-sensitive plate used in a computer integrated machine. Background technique [0002] Heat-sensitive version paper (also known as heat-sensitive stencil paper in the text printing industry) is generally made of base paper and polyester film. The base paper is mainly used as the support material of the heat-shrinkable resin film, which needs to have a certain rigidity and strength to ensure the flatness of the heat-sensitive version paper when it is printed on the machine; the film is used as a barrier material for the ink, generally made of PET material, It has extremely strong tensile strength, and its melting point is between 255 and 260°C. The thickness of the composite film is generally less than 5 μm. As the supporting structure of heat-sensitive master paper and the loading structure of ink, the structure and performance ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H27/00D21F11/00
CPCD21F11/00D21H27/00
Inventor 王元元王士远张金亮王士莽王士寇刘敏娜王亚琛蒋锦艳王建
Owner HEBEI AMUSEN FILTER PAPER CO LTD
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