Sticky cleaner
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Solution Overview
Problem
Sticky cleaner PSA tape rolls face issues with adhesive strength degradation due to dust accumulation, leading to excessive unwinding force causing tearing or splitting, and potential rail drawing and roll-loosening, especially at low temperatures.
Innovation Solution
A PSA tape roll design with alternating sections of rubber-based PSA and acrylic viscoelastic material layers, where the viscoelastic layer protrudes further, providing controlled adhesion and reducing unwinding force, and incorporating anti-rail-drawing portions to prevent adhesion to the surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the adhesive strength is increased to maintain effective cleaning, then the adhesive face can effectively collect dust, but the unwinding force becomes excessively large causing tearing or splitting
Solution Approach 1:
The adhesive face is segmented into multiple adhesive sections along the width direction, with non-adhesive sections (protruding portions) positioned between them. This segmentation reduces the total adhesive contact area with the roll surface, thereby reducing the unwinding force while maintaining effective dust collection capability in each adhesive section.
Solution Approach 2:
Different sections of the adhesive face have different properties: adhesive sections provide strong adhesion for dust collection, while non-adhesive protruding portions provide reduced adhesion to prevent excessive unwinding force. This local differentiation allows simultaneous achievement of strong cleaning performance and easy unwinding without tearing.
2Ease of operation
If the unwinding force is reduced to facilitate easy renewal, then the PSA tape can be easily unwound, but roll-loosening occurs during storage
Solution Approach 1:
The protruding portions are designed with flexible properties that allow them to dynamically adapt to storage conditions. During storage, they provide sufficient friction to prevent roll-loosening, while during unwinding operations, they reduce the adhesive force to facilitate easy renewal. This dynamic behavior resolves the contradiction between ease of unwinding and storage stability.
3Reliability
If the adhesive strength is increased to prevent rail drawing, then the PSA tape adheres firmly to the target surface, but the unwinding force becomes excessively large
Solution Approach 1:
The adhesive face provides sufficient adhesion in the adhesive sections to prevent rail drawing during cleaning operations, while the non-adhesive protruding portions reduce the overall unwinding force. This partial action approach ensures reliable surface adhesion without excessive unwinding force that would cause tearing.
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
Facilitates easy adhesive face renewal, prevents roll-loosening, and maintains consistent unwinding force across temperature variations, ensuring efficient cleaning without tearing or splitting.
Implementation Method 1
a second layer formed of a viscoelastic material... The viscoelastic material forming the second layer is typically an acrylic viscoelastic material
Implementation Method 2
a first layer formed of a PSA (pressure-sensitive adhesive)
Data Source
AI summary
Provided is a sticky cleaner whose adhesive face can be easily renewed and whish is less susceptible to roll-loosening. The sticky cleaner provided by this invention comprises a PSA tape having an adhesive face on the first face of a substrate. The PSA tape forms a PSA tape roll wound with the adhesive face on the outside. On the first face of the substrate, the PSA tape comprises a first layer formed of a PSA and a second layer formed of an acrylic viscoelastic material. The adhesive face comprises first sections where the first layer is exposed and second sections where the second layer is exposed. The second sections protrude further out of the PSA tape roll relative to the first sections. The PSA tape roll shows an unwinding force F0 at 0° C. and an unwinding force F30 at 30° C.