Segmented Release Liner for Adhesive Mounting Pad
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Solution Overview
Problem
Existing skin adhesive pads for infusion devices risk contamination and reduced adhesion during release liner removal, often requiring uneven force and long pull-length, which can lead to liner tearing and incomplete removal.
Innovation Solution
A mounting pad with a removable release liner divided into sections, each with score lines forming narrow strips, allowing for easy, single straight upward removal with minimal force, reducing pull-length and risk of contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the release liner is removed manually in one piece, then the adhesive layer is protected during removal, but the pull required must be even and smooth which is difficult to achieve, leading to liner tearing and incomplete removal
Solution Approach 1:
The release liner is divided into multiple sections (typically two) by score lines that extend from the periphery toward the center. This segmentation allows each section to be removed independently, making the removal process more manageable and less prone to tearing. The user can grasp and pull each section separately, ensuring complete removal without requiring perfectly even force distribution across the entire liner.
2Ease of operation
If the release liner is divided into sections with score lines, then the ease of removal is improved, but the risk of contamination by accidental touches during removal increases
Solution Approach 1:
The score lines are positioned to extend from the periphery of the release liner toward the center, creating sections that can be grasped and removed from the edges. This extraction approach allows the user to remove the release liner sections without needing to touch the central adhesive area, thereby reducing the risk of contamination while maintaining ease of removal.
3Force
If the release liner is made as a single long strip, then the pull force is small and even, but the pull-length becomes relatively long which complicates the removal process
Solution Approach 1:
By dividing the release liner into multiple shorter sections rather than one long strip, the pull-length for each section is reduced. Although multiple sections exist, each can be removed with a short, manageable pull, eliminating the need for a long continuous pull while maintaining the benefit of reduced pull force through the score line design.
Data Source
AI summary
A mounting pad comprising an adhesive layer (2), said adhesive layer being provided with a removable release liner (3). The release liner being divided into at least two sections (3A, 3B) and each of the at least two said sections of the release liner is provided with one or more score lines (4) thereby defining each section of the release liner as a strip, which renders it possible by a single straight upward pull to peel a release liner in two or more narrow strips, thereby still maintaining an even pull with small force needed to remove the release liner and using only a short pulling distance for removing the release liner from the adhesive surface.