Ostomy Wafer Release Liner with Frangible Segmentation
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Solution Overview
Problem
Existing ostomy appliances face challenges in preserving the adhesive properties and preventing premature exposure of the adhesive surface, which can lead to leakage issues due to the lack of effective release liners that allow for controlled and precise application.
Innovation Solution
The ostomy appliance features a release liner with frangible connections, comprising weakened and unweakened lines that allow for easy segmentation and controlled removal, ensuring the adhesive surface remains intact until application, and facilitating precise positioning and handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a release liner is used to cover the adhesive surface, then the adhesive properties are preserved and premature exposure is prevented, but the release liner may compromise adhesive strength or create leakage paths
Solution Approach 1:
The release liner is divided into multiple segments separated by frangible connections (weakened lines), allowing the liner to be peeled away in sections during application. This segmentation prevents the entire liner from compromising adhesive strength while still providing protection until needed.
Solution Approach 2:
The release liner has varying properties: the majority consists of release liner material providing protection, while specific frangible connection regions have weakened lines that allow controlled separation. This local differentiation enables the liner to protect adhesive properties without creating widespread adhesive strength reduction.
2Reliability
If a continuous release liner is used, then complete adhesive surface coverage is achieved, but precise application and controlled removal become difficult
Solution Approach 1:
The release liner is divided into multiple segments separated by frangible connections (weakened lines), allowing the liner to be peeled away in sections during application. This segmentation enables precise application by allowing users to remove only the necessary portions at each step.
Solution Approach 2:
The release liner is pre-divided into segments with frangible connections before application, enabling controlled and sequential removal during the application process. This preliminary segmentation facilitates precise positioning and handling.
3Ease of operation
If the release liner is made fragile for easy removal, then controlled detachment is achieved, but the liner may compromise the adhesive surface integrity
Solution Approach 1:
The release liner is divided into multiple segments separated by frangible connections (weakened lines), allowing the liner to be peeled away in sections during application. This segmentation enables controlled removal while maintaining adhesive surface integrity through the unweakened lines.
Solution Approach 2:
The release liner has varying properties: the majority consists of release liner material providing protection, while specific frangible connection regions have weakened lines that allow controlled separation. This local differentiation enables easy detachment at connection points while maintaining integrity over the adhesive surface.
Data Source
AI summary
An ostomy appliance comprising a wafer having an adhesive proximal side configured to be attached to a skin surface around an ostomy of a user and a distal side, a backing layer located on the distal side of the adhesive layer, a hole for accommodating a stoma. The adhesive side of the wafer is provided with a release liner, the release liner comprises frangible connections dividing the liner into segments that can be separately detached or the liner can be detached as a single unit.