Photocurable Temporary Bonding Composition Bubble Suppression
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Solution Overview
Problem
Existing temporary bonding agents face challenges in suppressing backflow during spin coating while effectively removing bubbles, which can contaminate manufacturing apparatus and affect product quality, and also suffer from adverse effects due to fillers like carbon black.
Innovation Solution
A composition with controlled viscosity and specific gravity, comprising (meth)acrylate monomers and a photo radical polymerization initiator, is developed to suppress backflow and facilitate bubble removal, without the need for fillers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fillers like carbon black are added to the temporary bonding agent, then certain functional properties are improved, but adverse effects on the manufactured object and contamination occur
Solution Approach 1:
The patent extracts and eliminates fillers like carbon black from the temporary bonding agent composition. By removing these harmful additives, the invention achieves a cleaner composition that does not contaminate the manufactured object or manufacturing apparatus, while still maintaining necessary functional properties through the carefully selected (meth)acrylate monomer and polymer combination.
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 composition effectively prevents backflow and promotes bubble removal, ensuring clean manufacturing processes and improved product quality without the drawbacks of fillers.
Implementation Method 1
a photo radical polymerization initiator
Implementation Method 2
irradiation with ultraviolet (UV) rays
Data Source
AI summary
A composition for temporary bonding which is photocurable, contains: (A) a (meth)acrylate monomer; and (B) a photo radical polymerization initiator, in which a viscosity of the composition for temporary bonding at 23°C determined in accordance with JIS Z 8803:2011 is 500 mPa·s or more at a shear rate of 1 sec-1, and a specific gravity of the composition for temporary bonding at 23°C determined in accordance with JIS Z 8804:2012 is 1.000 g/cm3 or more and 1.050 g/cm3 or less.