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Braille printing ink and preparation method of Braille printed matter

A technology for printing ink and Braille, applied in the directions of reproduction/marking method, printing, ink, etc., can solve the problems of poor adhesion, easy falling off of bump characters, high cost of Braille printing equipment and materials, and achieves good antibacterial effect and is not easy to fall off. , the effect of strong adhesion

Active Publication Date: 2021-06-04
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the high cost of braille printing equipment and materials in the prior art, the inability to realize blind-blind contrast printing, the poor antibacterial property and poor adhesion of braille printing ink, and the raised dot characters are easy to fall off after multiple touches, and long-term use It is easy to breed bacteria defects, and a preparation method of plant antibacterial Braille printing ink and Braille printed matter is provided

Method used

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  • Braille printing ink and preparation method of Braille printed matter
  • Braille printing ink and preparation method of Braille printed matter
  • Braille printing ink and preparation method of Braille printed matter

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Experimental program
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Embodiment approach

[0024] In the present invention, various existing methods for extracting organic compounds can be used for the extraction of the terpenoids. According to a preferred embodiment of the present invention, the extraction method of the terpenoids comprises:

[0025] (1) ultrasonically treating the alcohol solution of the natural plant powder, and filtering the ultrasonic product to obtain the extract of the natural plant;

[0026] (2) Adding an extractant to the extract for extraction to obtain an extract containing the terpenoids.

[0027] In the present invention, the natural plant powder can be ground into powder by conventional methods. Preferably, the particle size of the natural plant powder can be 1-1000 μm.

[0028] In the present invention, ultrasonic devices in the prior art can be used to ultrasonically treat the alcohol solution of the natural plant powder, as long as the active ingredients in the natural plant powder can be fully dissolved in the alcohol solution. A...

preparation example 1

[0060] Used to illustrate the extraction method of terpenoids one

[0061] (1) Grind lavender into powder, take 100g of powdered lavender, add it to 800mL of ethanol solution, soak it for 24h and stir evenly, slowly add the above-mentioned lavender-ethanol mixture in an ultrasonic circulation device, and the dropping rate is 100mL / min , After the dropwise addition, ultrasonication was intense for 1h, and the ultrasonic power was 3000W. The mixed solution was filtered, and the filtrate was poured into a 1L flask for distillation. After distillation, the liquid in the flask was lavender solution.

[0062] (2) Take 20 g of lavender liquid and add sodium silicate solution to adjust the pH value to 12. After fully stirring, add ethyl acetate to extract four times. The ethyl acetate extract is distilled under reduced pressure at 110° C. to obtain primary terpenoids. Primary terpenoids are separated and purified through a silica gel chromatographic column, and the eluent is chlorofor...

preparation example 2

[0064] Used to illustrate the extraction method of terpenoids II

[0065] (1) Lemongrass is ground into powder, get 100g powdery lemongrass, join in the ethanol solution of 600mL, stir after soaking 24h, slowly add above-mentioned lemongrass ethanol mixture dropwise in the ultrasonic circulation device, the rate of addition is 100mL / min, strong ultrasonication for 1h after the dropwise addition, ultrasonic power 3000W, filter the mixed solution, pour the filtrate into a 1L flask, and carry out distillation. The liquid in the flask after distillation is citronella grassland liquid.

[0066] (2) Take 20 g of citronella prairie liquid and add sodium hydroxide solution to adjust the pH value to 14. After stirring well, add petroleum ether to extract four times. The petroleum ether extract is subjected to vacuum distillation at 100° C. to obtain primary terpenoids. The primary terpenoids are separated and purified through a silica gel chromatographic column, and the eluent is chlor...

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Abstract

The invention relates to the technical field of Braille printing, and discloses a preparation method of Braille printing ink and Braille printed matter. Braille printing ink provided by the invention contains 10-60 parts by weight of curable prepolymer, 1-10 parts by weight of phytostatic agent, 5-30 parts by weight of photoinitiator, and 20-80 parts by weight of reactive diluent Agent, wherein, the phytostatic agent contains terpenoids. The braille printing ink provided by the invention contains a plant antibacterial agent, has high safety and low cost, and the braille printed matter obtained by using it for braille printing has high gloss, strong adhesion, is not easy to fall off, and has good antibacterial effect.

Description

technical field [0001] The invention relates to the technical field of Braille printing, in particular to a method for preparing Braille printing ink and Braille printed matter. Background technique [0002] At present, the products on the market for blind people are roughly divided into two categories: one is an audio reader, and the other is a braille printer. Although the former is low in cost, users are limited by factors such as the place to use it; the latter is generally a dot matrix printer, which uses Yangwen rubbing technology, and uses kraft paper (or paper with high mechanical strength) as the printing material. Mechanical embossing deformation to realize Braille embossed characters. This method has high requirements on the mechanical strength, thickness and flexibility of the substrate, and after repeated touches by blind people, the embossed characters are easily ground and cannot be recognized by blind people, so the life is shorter and the cost is higher. A...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/30C09D11/38B41M5/00
CPCB41M5/0023C09D11/30C09D11/38
Inventor 贾志梅刘云霞秦明明王思宋延林
Owner INST OF CHEM CHINESE ACAD OF SCI