Fluororubber Adhesive Bonding for Heat-Resistant Base Lamination
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Solution Overview
Problem
Existing methods for bonding bases using adhesives result in poor heat resistance and foreign matter inclusion, while thermal fusion restricts base choice and degrades inherent properties and functions, and both methods are energy-inefficient.
Innovation Solution
A bonded object is created using a fluororubber adhesive layer with specific Mooney viscosity, bonded in the presence of carbon dioxide, which maintains base properties and functions without external heating, allowing tight bonding with high bond strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If adhesive bonding method is used, then ease of bonding is improved, but heat resistance and foreign matter resistance deteriorate
Solution Approach 1:
The patent changes the chemical composition parameters of the adhesive by using fluororubber-based adhesive instead of conventional adhesives. This parameter change provides both ease of bonding and improved heat resistance, resolving the contradiction between manufacturing ease and reliability.
2Strength
If thermal fusion method is used, then bond strength is improved, but base property preservation deteriorates
Solution Approach 1:
The patent introduces fluororubber-based adhesive as an intermediary substance between bases. This intermediary provides strong bonding while not requiring high temperature that would damage base properties, thus resolving the contradiction between bond strength and property preservation.
3Strength
If thermal fusion method is used, then bond strength is improved, but energy consumption increases
Solution Approach 1:
The patent replaces the thermal energy-based bonding system with a chemical bonding system using fluororubber adhesive. This substitution achieves strong bonding without the high energy input required for thermal fusion, resolving the contradiction between bond strength and energy efficiency.
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 bonded object maintains base properties and functions while achieving strong adhesion with low energy consumption, reducing foreign matter inclusion and offering flexibility in base choice.
Implementation Method 1
a base such as nonwoven fabric, woven fabric, fiber, porous membrane, or film may be used alone, or may be used while laminated with a plurality of the same bases or other bases. When used in a thus laminated form, the bases have been usually bonded by a method in which an adhesive is used for bonding the bases
Implementation Method 2
the bonded object according to any one of [1] to (4), being bonded in the presence of liquid or gaseous carbon dioxide
Data Source
AI summary
An embodiment of the present invention relates to a bonded object or a method for manufacturing a bonded object, the bonded object having bases bonded therein while placing an adhesive layer in between, the adhesive layer being obtained from a fluororubber composition that contains at least one fluororubber selected from fluoroelastomer (FKM) and perfluoroelastomer (FFKM), and has a Mooney viscosity (ML 1+10) at 121° C., measured in accordance with ASTM D1646, of 80 to 115.