Embossed Release Liner for Uniform Ostomy Adhesive Wetting
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Solution Overview
Problem
Applying a liquid substance with active agents to the adhesive surface of an ostomy appliance is challenging due to hygiene issues and ensuring uniform wetting, as traditional methods like using a wipe can contaminate the adhesive and fail to adequately cover the entire surface.
Innovation Solution
A body side member with an embossed release liner that includes channels and interconnected cavities to efficiently distribute the liquid over the adhesive surface, minimizing contamination and ensuring thorough wetting, along with a reservoir for controlled liquid dispensing and an absorbent layer for excess liquid management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a wipe is used to apply liquid to the adhesive surface, then the liquid can be applied to the surface, but the adhesive surface becomes contaminated with fibers and residues
Solution Approach 1:
The patent introduces a release liner as an intermediary carrier between the liquid application source and the adhesive surface. The release liner absorbs the liquid substance and transfers it to the adhesive surface through controlled contact, preventing direct contamination from wipes while ensuring uniform distribution of the liquid without fiber or residue contamination
Solution Approach 2:
The release liner is made of porous material that allows it to absorb and hold the liquid substance. The porous structure enables the liner to take up the liquid and then release it uniformly onto the adhesive surface through capillary action, achieving clean and even application without the need for direct wipe contact
2Quantity of substance
If a wipe is used to wet the adhesive surface, then some areas may be covered, but uniform wetting of the entire surface is difficult to ensure
Solution Approach 1:
The porous release liner uniformly distributes liquid across its entire surface through capillary action. When the liner is pressed against the adhesive surface, the liquid is evenly transferred across the entire contact area, ensuring uniform wetting without the patchy coverage that occurs with manual wiping
Solution Approach 2:
The release liner acts as a mediator that pre-distributes the liquid uniformly across its surface before contact with the adhesive. This intermediary step ensures that when the liquid is transferred to the adhesive surface, the entire area receives consistent coverage, eliminating the variability inherent in manual application
3Ease of operation
If the adhesive surface is exposed before use, then it can be applied, but the adhesive properties may deteriorate or become contaminated
Solution Approach 1:
The release liner serves as a protective intermediary barrier that covers and protects the adhesive surface from environmental contamination and property deterioration. The liner is removed or positioned at the moment of application, allowing the adhesive to be used while maintaining its properties until that critical moment
Solution Approach 2:
The release liner is pre-applied to protect the adhesive surface before use. This preliminary protective action ensures the adhesive remains stable and uncontaminated until the moment it needs to be applied, at which point the liner is removed or positioned to allow controlled liquid application
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
Facilitates hygienic and efficient application of the liquid substance to the adhesive surface, ensuring uniform wetting and minimizing residue, while maintaining the adhesive's properties until application.
Implementation Method 1
The release liner comprises an embossed surface facing the adhesive layer. The embossed release liner that includes channels and interconnected cavities to efficiently distribute the liquid over the adhesive surface
Data Source
AI summary
An ostomy appliance comprising a body side member (20) for attachment to a skin surface of a user. The body side member includes a backing layer (22), an adhesive layer (24), and at least one release liner (38). The release liner is at least partly embossed (40) to form interconnected cavities (42) between the release liner and the adhesive surface. When fluid is distributed into the cavities, the adhesive surface is wetted.