Transfer Sheet Image Layer Curing for Blocking and Friction Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for manufacturing transfer sheets result in excessive adhesion between sheets, leading to chipping of the image layer and poor friction resistance of the transferred material.
Innovation Solution
A method involving the formation of a decorative layer, application of a composition containing acrylate or methacrylate compounds, formation of a hot melt adhesive layer, and curing the coating film to create an image layer with specific carbon double bond peak intensity ratios, ensuring excellent blocking resistance and friction resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a plurality of transfer sheets are laminated using conventional manufacturing methods, then the transfer sheets excessively adhere to each other, but this causes chipping of the image layer and poor blocking resistance
Solution Approach 1:
The patent applies a release agent specifically to the back surface of the transfer sheet (the surface that contacts other sheets when laminated), while the front surface (image layer) maintains its adhesive properties. This localized differentiation allows the image layer to adhere strongly to the substrate while preventing excessive adhesion between stacked transfer sheets, thereby resolving the contradiction between blocking resistance and inter-sheet adhesion.
Solution Approach 2:
The release agent acts as an intermediary substance between stacked transfer sheets, reducing the adhesion force between them. This intermediary layer prevents direct contact and strong bonding between the back surfaces of adjacent sheets, allowing for easy peeling without image layer chipping, while not affecting the adhesion of the image layer to the final substrate.
2Reliability
If the transfer sheet has strong adhesion properties, then the transferred material has good friction resistance, but this causes excessive adhesion between stacked transfer sheets
Solution Approach 1:
The patent creates different surface properties on different sides of the transfer sheet. The front surface (image layer side) is designed with high adhesion and friction resistance for good transfer performance, while the back surface is treated with a release agent to provide low adhesion for easy handling and peeling of stacked sheets. This local quality differentiation resolves the contradiction between friction resistance and ease of manufacture.
3Adaptability or versatility
If the image layer is made flexible for transfer, then the transfer sheet can conform to curved surfaces, but this reduces the structural stability of the transfer sheet
Solution Approach 1:
The patent employs a composite structure consisting of multiple layers with different properties: a flexible image layer containing silicone oil for conformability to curved surfaces, supported by a more rigid substrate layer that provides structural stability. This composite material approach allows the transfer sheet to exhibit both flexibility (from the image layer) and structural stability (from the substrate), resolving the contradiction between adaptability and stability.
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 method produces transfer sheets with enhanced blocking resistance and friction resistance, allowing for smooth transfer and strong adhesion to uneven substrates.
Implementation Method 1
a step 4 of curing the coating film to form an image layer including one or more kinds selected from the group consisting of an acrylate resin and a methacrylate resin
Data Source
AI summary
Provide is a method for manufacturing a transfer sheet in which a transfer sheet having excellent blocking resistance and excellent friction resistance of a transferred material can be manufactured. Also provided is a transfer sheet having excellent blocking resistance and excellent friction resistance of a transferred material.The method for manufacturing a transfer sheet includes: a step 1 of forming a decorative layer on a temporary support; a step 2 of applying a composition including a (meth)acrylate compound to the decorative layer to form a coating film; a step 3 of forming a hot melt adhesive layer on the coating film; and a step 4 of curing the coating film to form an image layer including a (meth)acrylate resin, in which an intensity ratio P1 obtained from Expression (X1) is 0.005 to 0.300.