Pretreatment liquid for cold transfer digital ink-jet printing and application method thereof

A technology of digital inkjet and pretreatment liquid, applied in the field of printing auxiliaries, can solve the problem of light color on the surface of cold transfer digital inkjet printing, and achieve the effects of easy sizing, improved color yield, and improved color yield

Active Publication Date: 2012-06-20
NEWTECH TEXTILE TECH DEV SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the surface color of cold transfer digital inkjet printing is lighter than that of direct jet printing under the same amount of ink, the invention provides a pretreatment liquid for cold transfer digital inkjet printing and its application method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1: 1 of the cold transfer digital inkjet printing pretreatment liquid of the present invention, by:

[0014] 6.0wt% pseudoplastic rheological hydroxypropyl etherified starch;

[0015] 1.6wt% sodium bicarbonate+0.2wt% sodium carbonate;

[0016] 0.5wt% urea;

[0017] 91.7 wt% water.

[0018] Preparation method: add 6.0wt% pseudoplastic rheological hydroxypropyl etherified starch into a certain amount of water, and fully stir at a speed of about 700 rpm for 1 hour at room temperature. Then add 1.6wt% sodium bicarbonate, 0.2wt% sodium carbonate and 0.5wt% urea in turn, and finally adjust to 100wt% with water to prepare the cold transfer digital inkjet printing pretreatment solution.

[0019] The pH value of the cold transfer digital inkjet printing pretreatment liquid is 9.0. Under the condition of 22°C±2°C, the viscosity is about 12500mpa·s when the speed is 6rpm, and the viscosity is 60rpm when the speed is 60rpm. About 2000mpa·s.

Embodiment 2

[0020] Embodiment 2: 2 of the cold transfer digital inkjet printing pretreatment liquid of the present invention, by:

[0021] 3.0wt% pseudoplastic rheological carboxymethyl etherified starch;

[0022] 2.8wt% sodium carbonate;

[0023] 0.7 wt% urea;

[0024] 93.5 wt% water.

[0025] Preparation method: add 3.0wt% pseudoplastic rheological carboxymethyl etherified starch into a certain amount of water, and fully stir at a speed of about 600 rpm for 1 hour at room temperature. Then add 2.8wt% sodium carbonate in turn; and 0.7wt% urea, and finally adjust to 100wt% with water to prepare the cold transfer digital inkjet printing pretreatment liquid.

[0026] The pH value of the cold transfer digital inkjet printing pretreatment liquid is 9.5. Under the condition of 22°C±2°C, the viscosity is about 8000mpa·s when the speed is 6rpm, and the viscosity is 60rpm when the speed is 60rpm. About 1700mpa·s.

Embodiment 3

[0027] Embodiment 3: 3 of the cold transfer digital inkjet printing pretreatment liquid of the present invention, by:

[0028] 8wt% pseudoplastic rheological hydroxymethyl etherified starch;

[0029] 1.2wt% sodium bicarbonate;

[0030] 0.2wt% urea;

[0031] 91.6 wt% water.

[0032] Preparation method: add 8wt% pseudoplastic rheological hydroxymethyl etherified starch into a certain amount of water, and fully stir at a speed of about 800 rpm for 1 hour at room temperature. Then add 1.2wt% sodium bicarbonate in turn; and 0.2wt% urea, and finally adjust to 100wt% with water to prepare the cold transfer digital inkjet printing pretreatment solution.

[0033] The pH value of the cold transfer digital inkjet printing pretreatment liquid is 8.9. Under the condition of 22°C±2°C, the viscosity is about 15000mpa·s when the speed is 6rpm, and the viscosity is 60rpm when the speed is 60rpm. About 2200mpa·s.

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Abstract

The invention discloses a pretreatment liquid for cold transfer digital ink-jet printing and an application method of the pretreatment liquid. The pretreatment liquid for cold transfer digital ink-jet printing contains pseudo plastic rheological etherified starch, an alkaline agent, urea and water. In the rotary screen sizing process, a fabric to be printed is treated by the pretreatment liquid and then closely bonded with a digital ink-jet transfer printing medium, and jet-printing patterns are transferred from the medium to the fabric by use of a transfer printing machine. The pretreatment liquid can effectively prevent transfer of dyes to the inside of the fabric to increase the surface dye-uptake rate of the fabric. In case of the same ink amount, the color of the product is darker than that of the conventional cold-transfer printing.

Description

technical field [0001] The invention relates to a printing auxiliary agent used in the textile printing industry, in particular to a cold-transfer digital ink-jet printing pretreatment liquid and a use method thereof. In the cold transfer digital inkjet printing process, the printed fabric is tightly combined with the cold transfer printing paper medium of digital inkjet printing after being treated by the pretreatment liquid, and the printing pattern is transferred from the paper medium to the printed on fabric. Background technique [0002] Cold transfer digital inkjet printing is a new technology that combines cold transfer printing with digital inkjet printing. If the current cold transfer printing method is used, that is, after pattern design, plate making, engraving, etc. in the same way as the normal printing sample, the dye ink is printed on the transfer printing paper with a printing machine, and then the dye ink on the printing paper is transferred. The pattern i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/48D06P1/673D06P1/642D06P5/30
CPCD06P1/642D06P1/48D06P1/673D06P5/30
Inventor 钟博文
Owner NEWTECH TEXTILE TECH DEV SHANGHAI
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