Transfer paper
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Transfer papers used in sublimation textile printing face challenges in maintaining image quality, adhesion to printing substrates, and transfer efficiency, leading to issues like image deterioration, color development reduction, and textile printing unevenness.
Innovation Solution
A transfer paper with a base paper and one or more coating layers, where the outermost coating layer contains amorphous silica and multiple binders, including ethylene-vinyl acetate copolymer, and optionally calcined kaolin as a filler, to enhance image deterioration resistance, adhesion, and transferability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the receptivity of the transfer paper to sublimation textile ink is improved, then the image quality of the pattern is improved, but the transfer of sublimation textile ink becomes insufficient
Solution Approach 1:
The patent applies local quality by creating distinct layers with different functions: the ink receiving layer contains pigments and binders optimized for ink absorption and image quality, while the adhesive layer contains specific polymers optimized for transfer efficiency. This spatial differentiation allows each layer to perform its function optimally without compromising the other.
Solution Approach 2:
The patent uses composite materials by combining multiple polymers (polyvinyl alcohol, carboxymethyl cellulose, starch) in the adhesive layer with specific ratios, and combining pigments with binders in the ink receiving layer. This composite structure enables simultaneous optimization of ink receptivity and transfer performance.
2Manufacturing precision
If the receptivity of the transfer paper to sublimation textile ink is improved, then the image sharpness is improved, but color development in the printing substrate decreases
Solution Approach 1:
The patent applies parameter changes by optimizing the glass transition temperature of polymers in the adhesive layer (specifically polyvinyl alcohol with Tg of -60°C to -30°C and carboxymethyl cellulose with Tg of 80°C to 120°C) and the particle size distribution of pigments (0.1 μm to 10 μm). These parameter optimizations enable both sharp image formation and sufficient color development.
3Productivity
If the transfer paper adheres well to the printing substrate, then continuous transfer is enabled, but image quality deteriorates due to poor adhesion in some regions
Solution Approach 1:
The patent applies segmentation by dividing the coating structure into functionally distinct layers: an ink receiving layer for image formation and an adhesive layer for substrate bonding. This segmentation allows the adhesive layer to provide uniform adhesion across the entire surface without interfering with the image quality in the ink receiving layer.
Solution Approach 2:
The patent optimizes adhesion parameters by specifying the glass transition temperatures of polymers in the adhesive layer and their particle size distribution (0.1 μm to 10 μm), ensuring consistent adhesion strength across the entire transfer paper surface for reliable continuous transfer while maintaining image quality.
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 provides improved image deterioration resistance, color development property, adhesion to the substrate, and resistance to textile printing unevenness, while also enhancing transferability by optimizing the coating composition and base paper properties.
Implementation Method 1
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, whereinan 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, andthe binder contains two or more different binders, and at least one of the binders is an ethylene-vinyl acetate copolymer.