Double-Sided Adhesive Tape With Asymmetric Projection Density
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Solution Overview
Problem
Existing adhesive tapes face challenges in achieving different adhesive forces on opposite surfaces without complex production processes.
Innovation Solution
The adhesive tape features first and second projections on opposite surfaces with different area densities, allowing for distinct adhesive forces, and can be manufactured by separately producing and joining layers with projections, optionally incorporating additional flexible layers for stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If projections are produced under different process conditions to achieve different adhesive properties on both surfaces, then adhesive force differentiation is improved, but manufacturing complexity increases
Solution Approach 1:
The adhesive tape is divided into two separate layers, each with its own set of projections. This segmentation allows each layer to be manufactured independently with different projection densities, enabling different adhesive forces on each side without requiring complex multi-step processing of a single monolithic structure.
Solution Approach 2:
Each layer is given different local properties through different projection area densities. The first layer has a first area density of projections while the second layer has a second area density, allowing each surface to be optimized for its specific adhesive requirement while maintaining overall structural integrity.
2Adaptability or versatility
If two separate layers are produced and joined to form the adhesive tape, then production flexibility and adhesive differentiation are improved, but device structure becomes more complex
Solution Approach 1:
Two separately manufactured layers with different projection characteristics are joined together to form a single integrated adhesive tape product. This merging combines the advantages of differentiated adhesive properties while presenting a unified structure to the user, hiding the complexity of the layered construction.
Solution Approach 2:
The adhesive tape employs a composite structure consisting of two distinct layers with different projection densities. This composite approach allows optimization of each layer for specific functions while creating a versatile adhesive tape that can adapt to different bonding requirements on either side.
Data Source
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AI summary
The invention relates to an adhesive tape (10) with a carrier (12) and first and second projections (18, 20), each of which is directly connected to the carrier (12) at one end. The projections (18, 20) are located on opposing carrier surfaces (14, 16) on the surface of the carrier (12). The first surface density with which the first projections (18) are distributed on the first carrier surface (14) differs from the second surface density with which the second projections (20) are distributed on the second carrier surface (16). A further layer (40) can be provided between layers (22, 24) of the carrier (12) to allow the layers (22, 24) to be made thinner while maintaining high stability.