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High non-transparent carbon-free duplicating paper and production thereof

A carbonless copy paper, transparent technology, applied in the field of papermaking processing, can solve the problems of non-copying or poor copying effect, low opacity and poor confidentiality of carbonless copying paper, and achieve clear writing, long storage time and good printing performance

Inactive Publication Date: 2006-05-31
GUANGDONG GUANHAO HIGH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the high (about 85%) opacity of the prior art large-quantity base paper (> 100g / m 2 ) cannot be rewritten or the rewriting effect is poor, low quantitative (≤60g / m 2 ) carbonless copy paper has low opacity (about 70%), printing is easy to print through, poor confidentiality and other shortcomings

Method used

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  • High non-transparent carbon-free duplicating paper and production thereof
  • High non-transparent carbon-free duplicating paper and production thereof

Examples

Experimental program
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Effect test

Embodiment Construction

[0042] 1. Preparation of coating

[0043] 1. Preparation of pre-coating paint: Take water 150, polyacrylic acid 2, kaolin 70, calcium carbonate 30 and alumina 10 at room temperature according to the weight ratio (unit: kg / ton paper dry weight), and the line speed is 18-28m After the high-speed dispersion of / s is complete, add carboxylated styrene-butadiene latex 30, oxidized starch 4, purple dye 0.1 and blue dye 0.1 to mix, stir evenly, and set aside.

[0044] 2. Preparation of chromogenic layer coating CB: Take water 40, polyacrylic acid 1.0, starch spacer 35, microcapsules 42, carboxylated styrene-butadiene latex 8 and oxidation Mix starch 5, stir evenly, and set aside.

[0045] 3. The preparation of the color layer coating CF: take water 100, polyacrylic acid 1.0 and kaolin 130 at room temperature according to the weight ratio (unit: kg / ton dry weight of paper), and disperse at a high speed with a line speed of 18-28m / s Then add zinc salicylate resin 23, carboxylated sty...

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Abstract

The invention is about high opaque carbon-free paper and its process. The paper of high opaque (about 85%) with big quantity (above 100g / m2) caní»t be copied; the paper of low quantity (lower than 60 g / m2) has the low opaque (about 70%). The invention is to cover a high opaque paint on the paper, then to coat using the carbon-free paper, so its opacity reaches above 85%.

Description

technical field [0001] The invention relates to papermaking processing technology, in particular to a highly opaque carbonless copy paper and its production process. Background technique [0002] With the progress and reform of the society, the scope of use and requirements for carbon-free copying paper in various industries are also expanding and deepening, and the performance and quality requirements of carbon-free copying paper are also getting higher and higher. In the past, "scratch-type tax stamps" used large-quantity base paper (120g / m 2 ) to print, this kind of tax stamp cannot be duplicated in multiple copies. At present, the low quantitative (≤60g / m 2 ) The opacity of carbonless copy paper is generally about 70%. The ink printing on both sides is easy to print through, and the confidentiality is poor. Contents of the invention [0003] The purpose of the present invention is to solve the high (about 85%) opacity of the prior art large-quantity base paper (>...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/32B32B29/00D21H13/38D21H13/44
Inventor 黄阳旭王际德熊杰刘志浩李臻张丽红洪忠秀
Owner GUANGDONG GUANHAO HIGH TECH
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