Plasma-Treated Adhesive Tape for Expanding Media
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Solution Overview
Problem
Adhesive tapes wound around media with expanding cross-sections, such as high-voltage storage devices, face issues with adhesive strength and tensile strength due to expansion forces, where the separating layer on the tape reduces adhesion between layers, leading to loosening of windings.
Innovation Solution
The adhesive tape features a carrier film with a full-surface adhesive layer and a plasma-treated release agent layer, allowing the tape to adhere to itself during wrapping around expanding media, enhancing adhesion and tensile strength through plasma treatment of the release agent layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a separating layer is applied to the adhesive tape to enable easy unwinding from the roll, then the ease of operation is improved, but the adhesive strength between winding layers deteriorates
Solution Approach 1:
The patent applies different surface treatments to different regions of the adhesive tape. The front surface (adhesive side) maintains high adhesion for bonding layers, while the back surface (separating layer side) is treated to provide controlled release properties for easy unwinding. This local differentiation resolves the contradiction by giving each surface the quality it needs for its specific function.
Solution Approach 2:
The separating layer is pre-applied to the adhesive tape before winding, creating a built-in release mechanism that enables easy unwinding without compromising the adhesive bonding capability of the front surface. This preliminary preparation resolves the contradiction by establishing the ease of operation property in advance without affecting the strength property during application.
2Strength
If the adhesive tape is wound multiple times around expanding media, then the tensile strength is improved through layer bonding, but the reliability deteriorates due to loosening from expansion forces
Solution Approach 1:
The adhesive tape consists of a composite structure with a carrier film, adhesive layer, and separating layer. This composite construction provides both the tensile strength needed for multiple windings and the controlled release properties that prevent loosening during expansion. The combination of materials resolves the contradiction by integrating both strength and reliability properties into a single system.
Solution Approach 2:
The patent modifies the surface properties of the separating layer through plasma treatment or chemical coating, changing its adhesion parameters to provide optimal release characteristics. This parameter adjustment allows the tape to maintain strong bonding during winding while enabling easy release during expansion, resolving the contradiction between tensile strength and resistance to loosening.
3Ease of operation
If the separating layer reduces separating forces for easy unwinding, then the ease of operation is improved, but the adhesive strength deteriorates leading to winding loosening
Solution Approach 1:
The adhesive tape is segmented into distinct functional layers: a carrier film, an adhesive layer for bonding, and a separating layer for release. This segmentation allows each layer to perform its specific function optimally - the adhesive layer provides strength for bonding while the separating layer provides ease of unwinding, resolving the contradiction by dividing the functions into separate components.
Solution Approach 2:
The separating layer acts as an intermediary between the adhesive tape and the underlying surface or roll. It provides a controlled interface that enables easy unwinding while allowing the adhesive layer to maintain strong bonding with the substrate. This intermediary layer resolves the contradiction by mediating between the competing requirements of ease of operation and adhesive strength.
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 plasma treatment significantly increases the shear resistance of the adhesive tape, ensuring secure multi-layer bonding while maintaining easy unwinding from the roll, effectively addressing the issues of adhesive strength and tensile strength during expansion processes.
Implementation Method 1
the release agent layer is treated on the outside with a plasma
Data Source
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AI summary
Method for wrapping and bonding a medium that is potentially expanding in a winding cross-section with an adhesive tape, in which: an adhesive tape is unwound from an adhesive tape roll, the unwound adhesive tape is provided on one side of a carrier film (1) with an adhesive layer (2) and on an opposite side with a release agent layer (3), the release agent layer (3) is treated with a plasma, the plasma-treated adhesive tape is wound around the medium that is potentially expanding in the winding cross-section, such that at least a section of the adhesive tape with the adhesive layer (2) is bonded to a lower winding layer.