Segmented Release Liner for Wrinkle-Free Medical Adhesive Tape
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Solution Overview
Problem
Medical pressure-sensitive adhesive tapes often generate wrinkles when applied, leading to insufficient adhesiveness, microbacterial entry, and reduced drug absorption, while also decreasing working efficiency.
Innovation Solution
A medical pressure-sensitive adhesive tape design with a release liner divided into multiple pieces allows for stepwise attachment without wrinkles, enhancing operability by releasing each piece sequentially to adhere to the skin without direct contact with the adhesive layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the release liner is released before the tape is applied, then the tape becomes thin and flexible, but wrinkles are apt to be generated
Solution Approach 1:
The release liner is divided into multiple separate release liners, each corresponding to different regions of the pressure-sensitive adhesive layer. This segmentation allows each release liner to be peeled off independently, enabling the adhesive tape to be applied in sections rather than all at once. This gradual application process maintains flexibility while preventing wrinkles from forming across the entire tape surface simultaneously.
2Manufacturing precision
If the tape is applied while preventing wrinkle generation, then wrinkle-free attachment is achieved, but working efficiency deteriorates
Solution Approach 1:
The release liner is divided into multiple separate release liners that can be peeled off independently and sequentially. This allows the operator to apply the tape in manageable sections, maintaining high working efficiency while ensuring each section is applied smoothly without wrinkles. The segmented approach makes the application process more controllable and less time-consuming than attempting to apply a whole tape without wrinkles.
3Productivity
If wrinkles are generated on the tape, then application speed may be maintained, but adhesiveness becomes insufficient and microbacterial entry occurs
Solution Approach 1:
By dividing the release liner into multiple parts, the tape can be applied in sections that are small enough to maintain full contact with the skin surface. This ensures sufficient adhesiveness in each section while keeping the overall application process efficient. The segmented approach prevents the formation of large wrinkles that would compromise adhesiveness, as each small section can be smoothly applied without creating air pockets or folds.
4Productivity
If wrinkles are generated on the tape, then application speed may be maintained, but the tape serves as a route for microbism and reduces drug absorption
Solution Approach 1:
The divided release liner enables the tape to be applied in multiple small sections rather than one large section. This segmentation ensures that each section makes complete contact with the skin surface without forming wrinkles or gaps. By eliminating wrinkles and ensuring full contact, the segmented application method prevents microbacterial entry routes while maintaining efficient application speed through the modular approach.
Data Source
Figure 1A~1B
Figure 2A~3
Figure 4~5B
AI summary
A medical pressure-sensitive adhesive tape according to an embodiment of the present invention includes, a film base material; a first pressure-sensitive adhesive layer; and a release liner releasably laminated to cover the first pressure-sensitive adhesive layer in the stated order, wherein: the release liner is divided into a first divided piece and a second divided piece; the first divided piece is placed at a widthwise-direction end on one side of the first pressure-sensitive adhesive layer to cover part of the first pressure-sensitive adhesive layer; the second divided piece is placed to cover a portion of the first pressure-sensitive adhesive layer that is not covered with the first divided piece; and the second divided piece has a folding portion extending toward a widthwise-direction end.