Printed acrylic fabric and production process thereof

By using a steaming process to swell acrylic fibers under humid and hot conditions, and utilizing the ionic bonds between cationic dyes and the acidic groups of the fibers, the problems of uneven coloring and colorfastness in the acrylic dyeing process are solved, and the clarity of printed patterns and color fastness are improved.

CN121992672APending Publication Date: 2026-05-08FUJIAN HUAFENG NEW MATERIALS
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Patent Information

Application Number
CN202512000034.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-29
Publication Date
2026-05-08

AI Technical Summary

Technical Problem

In the process of dyeing acrylic fibers, improper heating rate can easily lead to uneven coloring. Existing technology requires strict control of heating rate and time, high equipment requirements, and it is difficult to avoid the problem of uneven dyeing.

Method used

The acrylic fiber is printed using a steam method under humid and hot conditions. The positively charged cationic dye is bonded to the negatively charged acidic groups of the fiber through ionic bonds, thereby achieving the diffusion and curing of the dye inside the fiber.

Benefits of technology

Under humid and hot conditions, acrylic fibers swell, and the dye diffuses into the fiber interior and combines with acidic groups to achieve the required color fastness. The printed pattern is clear, the color is bright, and the color fastness is good.

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Abstract

The invention relates to a novel printed acrylic fabric and a production process thereof. The production process comprises the following steps: slurry preparation, printing, drying, steaming, water washing and shaping. Different from the prior art, the acrylic fabric is steamed after being printed in the technical scheme. Under the steaming damp and hot conditions, the acrylic fibers are expanded, dye ions with positive charges and fiber acid groups with negative charges are strongly and quantitatively combined through ionic bonds, cationic dye diffuses into the fibers and is combined and cured with the acid groups, and the requirement for color fastness is met.
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