Transfer Coating for Fabric Image Release and Adhesion
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Solution Overview
Problem
Existing printing processes for fabric substrates face challenges in transferring high-quality images without bleeding or running, and in achieving effective release and adhesion of ink images onto fabrics, especially with varying fabric types and colors.
Innovation Solution
A method involving the use of a specialty coating on a recording medium, comprising a binder, release agent, humectant, and wetting agent, applied via inkjet printing, followed by transfer to a fabric using a powder adhesive and hot-pressing, ensures the ink remains wet, adheres well, and maintains image quality post-transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional printing processes are used to transfer ink onto fabric substrates, then the printing process is simple, but the ink image bleeds or runs during transfer, resulting in poor image quality
Solution Approach 1:
A transfer medium with a specialty coating is introduced as an intermediary between the inkjet printer and the fabric substrate. The specialty coating contains a release agent that prevents the ink image from bleeding or running during transfer, while enabling effective release from the transfer medium and adhesion to the fabric. This mediator resolves the contradiction by maintaining image quality without requiring complex printing process modifications.
Solution Approach 2:
The transfer medium is pre-coated with a specialty coating containing a release agent before the inkjet printing process. This preliminary action ensures that the ink remains contained and does not bleed during transfer, solving the image quality issue before the actual printing and transfer occurs.
2Reliability
If a specialty coating with release agent is used on the recording medium, then the ink image releases effectively and adheres well to fabric, but the process complexity increases
Solution Approach 1:
The specialty coating is designed to perform multiple functions simultaneously: it acts as a release agent to prevent bleeding, facilitates release from the transfer medium, and enables adhesion to the fabric substrate. This multi-functionality resolves the contradiction by achieving reliable transfer and adhesion without requiring multiple separate components or processes.
3Strength
If the ink is kept wet during transfer, then adhesion to fabric is improved, but the transfer process requires precise timing and control
Solution Approach 1:
The transfer medium with specialty coating serves as a mediator that maintains the ink in a controlled wet state during transfer. The release agent in the coating prevents the wet ink from bleeding while allowing it to adhere to the fabric, resolving the contradiction by enabling strong adhesion without requiring complex timing and control mechanisms.
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
This method allows for high-quality image transfer onto fabrics with excellent touch feel and stretchability, suitable for laundering and maintaining image integrity, while ensuring effective release and adhesion without bleeding or cracking.
Implementation Method 1
The selected ink may first be deposited onto a specialty recording medium using commercially available printers such as those available from Ricoh Americas Corporation
Implementation Method 2
followed by transfer to a fabric using a powder adhesive and hot-pressing, ensures the ink remains wet, adheres well
Implementation Method 3
followed by transfer to a fabric using a powder adhesive and hot-pressing
Data Source
AI summary
A method for transferring an image to a fabric, including providing a recording medium; coating the recording medium with a specialty coating including a silicone release agent, a silicone emulsion catalyst, and a binder; printing an image on the recording medium including the specialty coating, the image being printed using a sublimation ink; adhering a powder adhesive to the image printed on the recording medium while the image is in a wet state; transferring the recording medium including powder adhesive and image to the fabric; and hot-pressing the powder adhesive and image to the fabric to adhere the powder adhesive and image to the fabric.