Transfer sheet
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Solution Overview
Problem
Transfer papers face challenges in maintaining image quality and adhesion to printing substrates during sublimation textile printing, leading to issues like image deterioration, reduced color development, and textile printing unevenness, particularly when used in continuous transfer processes.
Innovation Solution
A transfer paper with a base paper containing calcined kaolin and an outermost coating layer comprising amorphous silica and multiple binders, including ethylene-vinyl acetate copolymer and silanol-modified polyvinyl alcohol, which enhances adhesion, color development, and resistance to textile printing unevenness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a transfer paper uses conventional ink receiving layers with single binder systems, then manufacturing is simple, but adhesion property and resistance to textile printing unevenness are insufficient
Solution Approach 1:
The patent applies composite materials by formulating the ink receiving layer with multiple binders including polyvinyl alcohol, polyacrylonitrile, and carboxymethyl cellulose in specific proportions. This multi-component binder system creates synergistic effects that enhance adhesion property and resistance to textile printing unevenness, directly resolving the technical contradiction between improved reliability and increased material complexity.
2Reliability
If transfer paper is designed for single transfer operation, then adhesion is optimized for that process, but continuous transfer capability is reduced
Solution Approach 1:
The patent applies universality by designing an ink receiving layer composition that performs multiple functions: it provides strong initial adhesion for the first transfer, maintains adhesion stability through multiple transfers via the resilient binder system, and ensures consistent color development. The multi-binder formulation with specific pH control creates a universally adaptable layer that handles both single and continuous transfer operations effectively.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution improves image deterioration resistance, color development property, adhesion property, and transferability, ensuring better image quality and uniformity on printing substrates, even in continuous transfer processes.
Implementation Method 1
an ink receiving layer provided on one side or both sides of the sheet type base material, wherein the ink receiving layer contains a pigment, a binder, and a cationic resin
Implementation Method 2
a pattern is printed on a transfer paper using sublimation textile ink to prepare a printed transfer paper, and the printed transfer paper is brought into close contact with the printing substrate to transfer the sublimation textile ink onto the printing substrate
Data Source
AI summary
The object is to provide a transfer paper having good image deterioration resistance, color development property and adhesion property. The object is achieved by a transfer paper for use in a transfer textile printing method using sublimation textile ink, which comprises a base paper and one or more coating layer(s) provided on at least one side of the base paper, wherein an outermost coating layer positioned on the outermost side with respect to the base paper contains at least a pigment and a binder, at least one of the pigment is amorphous silica, and the binder contains two or more different binders, and at least one of the binders is an ethylene-vinyl acetate copolymer.