Segmented Stretch Release Adhesive for Easy Battery Removal
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Solution Overview
Problem
Existing stretch release adhesives for bonding battery assemblies in electronic devices require high drawing force for removal, are prone to breaking, and often leave redundant adhesive on surfaces, especially when used on rough surfaces.
Innovation Solution
A stretch release adhesive with spaced adhesive portions on a base, allowing for reduced drawing force and air discharge during bonding, preventing redundant adhesive application and enhancing bonding security while maintaining cost-effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a double-sided fully coated adhesive tape is used for bonding on rough surfaces, then adhesive coverage is maximized, but drawing force increases and the adhesive becomes prone to breaking
Solution Approach 1:
The adhesive tape is segmented into multiple discrete adhesive portions spaced apart from each other on the base. This segmentation reduces the total continuous adhesive area, thereby lowering the drawing force required for removal and preventing the adhesive tape from breaking during the stretching and removal process, while still providing sufficient bonding on rough surfaces.
2Reliability
If a double-sided fully coated adhesive tape is used, then adhesive coverage is complete, but redundant adhesive is affixed to surfaces and air entrapment occurs
Solution Approach 1:
By dividing the adhesive into spaced portions, the gaps between adhesive portions allow air to escape during bonding while preventing redundant adhesive from being forced onto the bonded surface, eliminating the harmful effects of air entrapment and adhesive overflow.
Solution Approach 2:
Adhesive portions are strategically positioned and sized to match the local bonding requirements of different areas of the battery assembly, ensuring adequate adhesive presence where needed while avoiding excessive adhesive in other areas, thus preventing redundant adhesive affixation.
3Ease of operation
If spaced adhesive portions are used to reduce drawing force, then adhesive removal becomes easier, but adhesive coverage area decreases
Solution Approach 1:
The adhesive is divided into multiple spaced portions that collectively provide sufficient coverage area for bonding the battery assembly to the housing, while the spacing between portions reduces the continuous adhesive area, thereby lowering drawing force and enabling easier removal without compromising overall adhesive coverage.
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 facilitates easy removal of the adhesive without breaking, prevents redundant adhesive on surfaces, and ensures secure bonding by using gaps between adhesive portions, thus saving production costs without compromising adhesive function.
Implementation Method 1
a stretch release adhesive for bonding a battery assembly in an electronic device
Data Source
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AI summary
The present disclosure provides a stretch release adhesive, a battery assembly, a housing assembly, and an electronic device. The stretch release adhesive includes a base; and a plurality of adhesive portions spaced apart from one another, each of the adhesive portions being provided on a surface of the base.