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A kind of highly ink-absorbing colored writing paper and its preparation method

A technology of writing paper and color, which is applied in the field of papermaking technology, can solve the problems of page smearing, reduced ink absorption performance of paper, and a large amount of staining, so as to make up for the reduction of paper strength, improve evenness, and eliminate the effect of two-sided difference

Active Publication Date: 2016-04-13
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In addition, many colored note papers appearing on the market, because the surface is coated with a thick layer of surface sizing agent, the ink absorption performance of the paper is greatly reduced, resulting in the phenomenon of smudges on the pages during the writing process, and sometimes even make the Writer's hand with a lot of ink

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] An embodiment of a high-end notebook:

[0037] Fiber ratio: pulp pulp composition is 15% bleached kraft softwood pulp, 60% hardwood pulp, 20% chemical fiber and 5% straw pulp in mass percentage, paper basis weight 60g / m 2 , Pulp: golden red dye: black dye=86:10:4 (both are dry weight of solution). Mix the pulp and the dye to form a pulp liquid, and add the rest of the substances in the following parts by mass: 15 parts of 95 light calcium, 5 parts of titanium dioxide, 2 parts of zinc sulfate, 1 part of dispersant (polyvinyl alcohol, solid content 30%) , 1 part of rheological agent (using cationic PAM), 1 part of surface sizing agent (styrene), 75 parts of water.

[0038] Process: Soak the bleached kraft softwood pulp and hardwood pulp in a pulp tank filled with alkaline hydrogen peroxide (2%) for half an hour to make them evenly dispersed and fully absorb water. Uniform interweaving and dehydration (under constant temperature and humidity, the temperature is 23 ± 1 ° ...

Embodiment 2

[0041] An embodiment of colored letter paper:

[0042] Fiber ratio: pulp pulp composition is 20% commercial pulp (bleached kraft softwood pulp), 55% hardwood pulp, 15% chemical mechanical pulp and 10% straw pulp, beating degree 21°SR, base paper basis weight 60g / m 2 , Pulp: pink dye: fluorescent orange dye = 75:15:10 (both are dry weight of solution).

[0043] The pulp and the dyestuff are mixed to become a pulp liquid, and the addition of other substances is as follows in terms of parts by mass: 15 parts of talcum powder, 5 parts of zinc sulfate, 2 parts of dispersant (polyvinyl alcohol, 40% solid content), rheological agent (with Cationic PAM) 1 part, surface sizing agent (carboxymethyl cellulose) 2 parts, 75 parts water.

[0044] Process: Soak the bleached kraft softwood pulp and hardwood pulp in a pulp tank filled with alkaline hydrogen peroxide (2%) for half an hour to make them evenly dispersed and fully absorb water. Make it evenly interweave and dehydrate (under co...

Embodiment 3

[0048] A kind of embodiment of colored post-it note:

[0049] Fiber ratio: pulp pulp composition is 25% commercial pulp, 50% hardwood pulp, 20% chemical mechanical pulp and 5% straw pulp, beating degree 21°SR, base paper basis weight 60g / m 2 , Pulp: blue dye: purple dye = 85:10:5 (both dry weight of solution).

[0050] Paper pulp and dyestuff are mixed to become pulp liquid, and the addition amount of other substances is as follows according to the number of parts by mass: 20 parts of 95 light calcium, 5 parts of talcum powder, 1 part of dispersant (polyvinyl alcohol, solid content 50%), rheological agent ( Use 1 part of cationic PAM), 3 parts of surface sizing agent (styrene-acrylic micro soap emulsion), and 70 parts of water.

[0051] Process: Soak the bleached kraft softwood pulp and hardwood pulp in a pulp tank filled with alkaline hydrogen peroxide (2%) for half an hour to make them evenly dispersed and fully absorb water. Make it evenly interweave and dehydrate (under ...

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Abstract

The invention discloses coloured writing paper high absorbency and a preparation method thereof. The coloured writing paper with high absorbency disclosed by the invention is prepared by changing ratios of paper pulp to dye, of dye to dye and of dye to filler and improving a coloured writing paper production process. The coloured writing paper comprises a piece of shallow yellow green writing paper, a piece of pink writing paper, a piece of shallow coffee writing paper, a piece of shallow blue writing paper, a piece of shallow green writing paper or a piece of beige writing paper. According to the invention, based on the preparation proportions of paper pulp, dye, market pulp, straw pulp and the like, proper filler is added to improve the optical property, the absorbency and the opacity of the coloured writing paper substantially, and the coloured writing paper has beautiful and uniform surface and high ink absorbency. The coloured writing paper disclosed by the invention is developed according to process requirements and market tendency, is reasonable in mixture ratio, simple to operate, exquisite in appearance and wide in application range and has high economic benefits and practical significance.

Description

technical field [0001] The invention relates to the field of papermaking technology, in particular to a raw material ratio of highly ink-absorbing colored writing paper and a preparation method thereof. Background technique [0002] For a long time, domestically used paper for writing has generally used white as the background color of the paper. This kind of paper is made into writing books, and generally has higher brightness and better reflective properties. In an environment with good light, the paper has a strong ability to reflect light. The light reflected into the human eye has a strong stimulating effect on the optic nerve. The visual discrimination of the above image and text information may also cause short-term blurred vision. This kind of stimulus acts on the human eye for a long time, which can easily cause visual fatigue, and even cause visual impairment. On the other hand, with the continuous improvement of people's living standards, people's pursuit of thin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H15/10D21H21/18D21H17/67D21H17/68D21H21/08D21H21/16D21H21/10
Inventor 樊慧明王硕刘建安
Owner SOUTH CHINA UNIV OF TECH