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Mechanical-pulp-resistant thermo-sensitive paper

A mechanical pulp and thermal paper technology, applied in the field of papermaking, can solve problems such as functional impact, paper color fade, unreadable, etc., and achieve the effects of environmental protection stability and excellent color development ability.

Inactive Publication Date: 2016-11-16
GOLD HUASHENG PAPER SUZHOU IND PARK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the chromogenic agents used in middle and low-end products are 2,2-bis(4-hydroxyphenyl)propane (BPA), and these use 2,2-bis(4-hydroxyphenyl)propane as the color developer. When the heat-sensitive paper is stored at room temperature for a long time, the functionality of the color developer will be slowly affected by the chemical substances in the mechanical pulp, causing the paper to fade or even become unreadable

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Preparation of primer coating: calcined kaolin and acrylic plastic pigment are mixed 1:1, the addition amount is 80% of the total amount, the addition amount of polyvinyl alcohol is 8% of the total amount, and the addition amount of styrene-butadiene latex is 10% of the total amount, and 2% of auxiliary agents (dispersant, tackifier, defoamer), configured as a primer coating solution with a concentration of 30%. The above-mentioned undercoat coating liquid is coated on the base paper layer containing mechanical pulp with a coating machine, and the coating amount is 7g / m2.

[0030] Preparation of developer solution: 38 parts of 4,4'-sulfonylbis[2-(2-propenyl)]phenol and 3.5 parts of polyvinyl alcohol were mixed and prepared to form a 38% concentration of developer mixture, and the mixture was prepared by wet grinding Grind the color developer mixture to 1.0 micron in the machine.

[0031] Preparation of sensitizer solution: 38 parts of diphenyl sulfone and 3.5 parts of ...

Embodiment 2

[0035] Preparation of primer coating: calcined kaolin and acrylic plastic pigments are mixed 1:1, the addition amount is 75% of the total amount, the addition amount of polyvinyl alcohol is 10% of the total amount, and the addition amount of styrene-butadiene latex is 12% of the total amount, And 3% additives (dispersant, tackifier, defoamer). Prepared as a primer coating solution with a concentration of 32%. The above-mentioned undercoat coating liquid is coated on the base paper layer containing mechanical pulp with a coating machine, and the coating amount is 8g / m2.

[0036] Prepare the developer solution as follows: 40 parts of 4-hydroxy-4'isopropoxydiphenyl sulfone and 3.5 parts of polyvinyl alcohol are mixed and prepared to form a 38% concentration of the developer solution, which is ground in a wet grinder to 0.8 Micron developer mixture.

[0037] A sensitizer solution was prepared as follows: 40 parts of diphenyl sulfone and 3.5 parts of polyvinyl alcohol were mixed ...

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PUM

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Abstract

The invention discloses mechanical-pulp-resistant thermo-sensitive paper. The mechanical-pulp-resistant thermo-sensitive paper is composed of a body paper layer, a base coating and a face coating. The body paper layer is body paper containing a mechanical pulp component. The body paper layer is sequentially coated with the base coating and the face coating. The mechanical-pulp-resistant thermo-sensitive paper solves the problems that body paper of traditional thermo-sensitive paper is thermo-sensitive paper containing mechanical pulp, and after the thermo-sensitive paper is stored for a long time under the high-temperature and high-humidity condition, thermo-sensitive printing is bad.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a heat-sensitive paper resistant to mechanical pulp. Background technique [0002] In recent years, thermal paper has become more and more widely used. From cash registers, bills, logistics labels that are common in daily life, food labels in supermarkets, measurement labels, and even traffic tickets, etc., thermal paper can be used in more and more areas. [0003] In the sharply increased demand for heat-sensitive paper, low-end products are the mainstream. At the same time, accompanied by domestic low-price competition, many heat-sensitive paper mills have chosen lower-cost mechanical pulp to reduce the cost of base paper. However, most of the chromogenic agents used in middle and low-end products are 2,2-bis(4-hydroxyphenyl)propane (BPA), and these use 2,2-bis(4-hydroxyphenyl)propane as the color developer. When the heat-sensitive paper is stored at room temperature for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H11/08D21H17/05D21H17/06D21H17/21D21H17/28D21H17/36D21H17/67D21H17/68D21H21/06D21H21/08D21H21/12D21H21/14D21H21/28D21H21/40D21H27/00
CPCD21H11/08D21H17/05D21H17/06D21H17/21D21H17/28D21H17/36D21H17/675D21H17/68D21H21/06D21H21/08D21H21/12D21H21/14D21H21/28D21H21/40D21H27/00
Inventor 李奕廷陈汉彬李娟
Owner GOLD HUASHENG PAPER SUZHOU IND PARK
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