Transfer paper
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Solution Overview
Problem
Nylon fabric's dimensional instability under heat and moisture during the transfer printing process leads to issues like partial detachment, blistering, and image quality deterioration, and the existing ink-receiving and adhesive layers make it difficult to remove the printed transfer paper smoothly without causing color unevenness or partial missing of the design.
Innovation Solution
A transfer paper with a substrate and nonaqueous resin layers, featuring an outermost coating layer comprising water-soluble polyester resin, carboxylic acid-modified polyvinyl alcohol resin, acrylic resin, starch, and amorphous silica, which allows for smooth heat and pressure application and subsequent removal without causing image quality issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If heat and pressure are applied to transfer dye from printed transfer paper to nylon fabric, then dye transfer efficiency is improved, but dimensional instability of nylon fabric causes partial detachment, blistering, and wrinkling
Solution Approach 1:
The patent introduces a specifically designed ink-receiving and adhesive layer as an intermediary between the base paper and the printed surface. This layer contains adhesive agents that strongly bind to the nylon fabric during heat and pressure application, anchoring the transfer paper in place and preventing dimensional instability issues while allowing effective dye transfer.
Solution Approach 2:
The transfer paper employs a composite structure with multiple functional layers: a base paper providing structural support, an ink-receiving and adhesive layer containing both ink absorption capabilities and adhesive agents for fabric bonding, and surface properties optimized for dye transfer. This composite design allows simultaneous achievement of dimensional stability and dye transfer efficiency.
2Reliability
If the printed transfer paper is kept stuck to the nylon fabric during steaming, then dye fixation is improved, but image quality deteriorates due to partial detachment, blistering, and wrinkling
Solution Approach 1:
The ink-receiving and adhesive layer serves as a mediator that maintains stable contact between the transfer paper and nylon fabric during steaming. The adhesive agents in this layer prevent relative movement and deformation, ensuring that the transferred design remains free from defects while the dye undergoes fixation.
3Productivity
If the printed transfer paper is removed from the nylon fabric after heat and pressure application, then productivity is improved, but image quality deteriorates due to partial missing, color unevenness, and color-development deterioration
Solution Approach 1:
The patent applies preliminary action by incorporating adhesive agents in the ink-receiving and adhesive layer that create strong bonding between the transfer paper and nylon fabric during the heat and pressure application. This preliminary strong adhesion ensures that when the transfer paper is subsequently removed, no dye or design elements are left behind, preventing partial missing and color unevenness while allowing efficient removal.
4Strength
If the proportion of natural glue to water-soluble synthetic binder is increased in the ink-receiving and adhesive layer, then adhesion to textile material is improved, but removal of printed transfer paper becomes difficult
Solution Approach 1:
The patent applies parameter changes by carefully controlling the proportion of natural glue to water-soluble synthetic binder within specific ranges (natural glue: 0.1-10 parts by mass, water-soluble synthetic binder: 90-90.0 parts by mass). This optimized composition achieves sufficient adhesion strength for dye transfer while maintaining ease of removal, preventing both poor adhesion and difficult removal issues.
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 enables smooth removal of the printed transfer paper from the nylon fabric after design formation, preventing issues like partial missing, color unevenness, and color-development deterioration, while maintaining image quality.
Implementation Method 1
bringing the printed transfer paper into close contact with a textile material and applying heat and pressure thereon for dye transfer
Implementation Method 2
applying heat and pressure thereon for dye transfer
Implementation Method 3
the acrylic resin having a glass transition point (Tg) of 0° C. to 45° C. and a minimum film forming temperature (MFT) of 0° C. to 50° C.
Implementation Method 4
the amorphous silica having a volume-based average particle diameter of 27 μm to 40 μm
Implementation Method 5
the coating layer located outermost from the substrate, at least comprising a water-soluble polyester resin, a carboxylic acid-modified polyvinyl alcohol resin
Implementation Method 6
printing the design with a dye ink to prepare a printed transfer paper; bringing the printed transfer paper into close contact with a fabric and applying heat and pressure thereon to transfer the dye on the printed transfer paper to the fabric
Implementation Method 7
steaming the fabric
Data Source
AI summary
An object of the present invention is to provide a transfer paper which allows smooth removal of a printed transfer paper from a design-printed fabric before steaming; and is unlikely to cause problems such as partial missing, color unevenness, color-development deterioration, etc. of the design on the fabric.Provided is a transfer paper having a substrate and one or more coating layers, the substrate having a base paper and one or more nonaqueous resin layers on one side of the base paper, the one or more coating layers being located on the one or more nonaqueous resin layers,the coating layer located outermost from the substrate, that is, the outermost coating layer, at least comprising a water-soluble polyester resin, a carboxylic acid-modified polyvinyl alcohol resin, an acrylic resin, a starch, and a white pigment,the acrylic resin having a glass transition point (Tg) of 0° C. to 45° C. and a minimum film forming temperature (MFT) of 0° C. to 50° C.