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Braille printing paper and preparation method and application thereof

A technology of printing paper and braille, applied in special paper, paper, papermaking, etc., can solve the problems of short service life, short life, high strength of printing materials, etc.

Pending Publication Date: 2021-12-14
CHINA NAT PULP & PAPER RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Dot-type printing uses kraft paper as the printing material, and uses needle-type mechanical deformation to realize Braille bump characters, but the strength of the printing material is high, and the mechanical deformation of the printing material is not suitable for long-term pressing, and it is easy to crush, resulting in Braille characters. The paper or book is not durable and has a short lifespan
Glue spray curing printing uses ultraviolet curing glue as the printing medium and ordinary paper as the printing material. The transfer of ultraviolet glue to the paper is realized by spraying glue. The binding force between paper and printing medium is poor during curing printing, Braille embossed characters are easy to fall off, and the service life is short

Method used

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  • Braille printing paper and preparation method and application thereof
  • Braille printing paper and preparation method and application thereof
  • Braille printing paper and preparation method and application thereof

Examples

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preparation example Construction

[0047] The present invention also provides a method for preparing braille printing paper described in the above technical solution, comprising the following steps:

[0048] beating the plant fibers, and mixing the obtained pulp with fillers and retention aids in sequence to obtain pulp;

[0049] Paper-making the slurry to obtain unsized raw paper;

[0050] Sizing the unsized raw paper with a surface sizing agent to obtain the sized raw paper;

[0051] The foaming paint is coated on the surface of the sizing paper and dried to obtain the braille printing paper.

[0052] In the present invention, the substances in the preparation method are consistent with the substances in the braille printing paper described in the above technical solution, and will not be repeated here.

[0053] The invention beats the plant fibers, and mixes the obtained pulp with fillers and retention aids in sequence to obtain slurry.

[0054] The present invention has no special limitation on the beati...

Embodiment 1

[0080] Add 60kg of southern pine fibers into a hydropulper for dispersion and transfer to a disc refiner for beating to 28°SR. The resulting pulp is sequentially mixed with 15kg of calcium carbonate and 80kg of polyacrylamide with a concentration of 0.1wt.%, to obtain a slurry;

[0081] The slurry is sent into a paper machine for papermaking to obtain uncoated paper, and the quantitative weight of the uncoated paper is 80g / m 2 ;

[0082] Slowly add oxidized starch into the water, and stir at a constant speed for 30 minutes at 90°C to obtain a surface sizing agent with a mass percentage concentration of 6%, and use the surface sizing agent to carry out in-machine sizing treatment on the unsized raw paper to obtain a sizing agent. Collagen paper, glue amount is 10g / m 2 ;

[0083] The sodium carboxymethyl cellulose of 1kg is mixed with water, obtains the sodium carboxymethyl cellulose solution that the mass percentage concentration is 2.5%, the sodium carboxymethyl cellulose aq...

Embodiment 2

[0087] Put 30kg of southern pine pulp board and 40k poplar chemical pulp into the hydropulper for dispersion, then transfer to the disc refiner for beating to 35°SR, and then mix the obtained pulp with 10kg of kaolin and 60kg of polyacrylamide with a concentration of 0.1wt.%. , get slurry;

[0088] The slurry is sent into a paper machine for papermaking to obtain uncoated paper, and the quantitative weight of the uncoated paper is 80g / m 2 ;

[0089] Slowly add guar gum to the water, and stir at a constant speed for 30 minutes at 60°C to obtain a surface sizing agent with a mass percentage concentration of 1%, and use the surface sizing agent to carry out in-machine sizing treatment on the unsized raw paper to obtain Sizing paper, the amount of glue is 5g / m 2 ;

[0090] 80kg concentration of 8wt.% polyvinyl alcohol aqueous solution and 25kg heat-sensitive foaming microcapsules were placed in a disperser, dispersed at a speed of 3000rpm for 20min to obtain the first mixture; ...

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Abstract

The invention belongs to the technical field of special paper, and particularly relates to braille printing paper and a preparation method and application thereof. The invention provides braille printing paper. The braille printing paper is prepared from the following raw materials in parts by mass: 60-90 parts of plant fibers, 40-70 parts of a foaming coating, 10-30 parts of filler, 0.05-0.5 part of a retention aid and 0.5-5 parts of a surface sizing agent, the foaming coating comprises thermosensitive foaming microcapsules, an adhesive, an organic silicon defoaming agent and water; the solid content of the foaming coating is 20-60%; and the thermosensitive foaming microcapsule is composed of an acrylic resin shell and liquid hydrocarbon wrapped by the acrylic resin shell. The braille printing paper provided by the invention has the characteristics that the braille salient point characters are not easy to fall off, the braille printing paper is not easy to crush, and the service life is long.

Description

technical field [0001] The invention belongs to the technical field of special paper, in particular to a braille printing paper and its preparation method and application. Background technique [0002] The development of braille character printing technology is slow. At present, the main braille printing technologies include needle mechanical printing and glue curing printing. Dot-type printing uses kraft paper as the printing material, and uses needle-type mechanical deformation to realize Braille bump characters, but the strength of the printing material is high, and the mechanical deformation of the printing material is not suitable for long-term pressing, and it is easy to crush, resulting in Braille characters. Paper or books are not durable and have a short lifespan. Glue spray curing printing uses ultraviolet curing glue as the printing medium and ordinary paper as the printing material. The transfer of ultraviolet glue to the paper is realized by spraying glue. Dur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/00D21H21/54D21H17/67D21H21/10D21H21/16D21H17/28D21H19/10D21H17/26D21H17/37
CPCD21H27/00D21H21/54D21H17/67D21H21/10D21H21/16D21H17/28D21H19/10D21H17/26D21H17/37
Inventor 江骁雅毛宗久赵涛陈雪峰王萌肖贵华王月江
Owner CHINA NAT PULP & PAPER RES INST CO LTD
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