Adhesive Patch Release Liner Segmentation

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Solution Overview

Problem

Existing adhesive patches for skin conditions are difficult to apply accurately and consistently, often requiring direct contact with the adhesive, which can be messy and may cause the patch to fold or bend undesirably.

Innovation Solution

A flexible adhesive patch arrangement featuring a release liner that can be easily separated into two portions, allowing for a two-step application process that minimizes direct contact with the adhesive and prevents the patch from folding or bending.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a traditional release liner is used that requires direct finger contact with the adhesive, then the application process becomes messy and the patch may fold or bend undesirably, but the application process becomes simpler without additional components

Engineering Contradiction:

Improveapplication process simplicityVSAvoidmessiness and patch folding

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The release liner is divided into two separate portions: a first portion that remains on the patch during storage and a second portion that is removed during application. This segmentation allows the adhesive to be protected until needed while enabling clean, controlled application without direct finger contact with the adhesive surface.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The second portion of the release liner acts as an intermediary tool that transfers the adhesive from the patch to the skin without requiring direct hand contact. This intermediary prevents contamination of the adhesive and eliminates the messiness associated with traditional application methods.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If the liner is made thin and flexible to match small adhesive patches, then the patch maintains good conformability to skin, but the liner becomes difficult to handle and separate

Engineering Contradiction:

Improvepatch conformability to skinVSAvoidliner handleability

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

Dividing the thin liner into two portions makes it easier to handle during application. The first portion remains attached to the patch providing protection, while the second portion can be easily grasped and removed without handling the entire thin liner, thus improving handleability while maintaining the thin, flexible structure needed for skin conformability.

Inventive Principle:

Principle #1Segmentation

3Ease of operation

If the liner area is made larger than the adhesive composition area, then the liner provides better protection and handling area, but the patch size increases which may not be suitable for small skin conditions

Engineering Contradiction:

Improveliner protection and handlingVSAvoidpatch size

Core Design Contradiction:

Ease of operationVSArea of moving object

Solution Approach 1:

The liner is segmented into two portions where the first portion covers the entire adhesive area for protection, and the second portion extends beyond the adhesive edges to provide handling area. This segmentation allows the protective and handling functions to be achieved without significantly increasing the overall patch size, as the extended portion can be designed to minimize excess material.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS20250144044A1Adhesive patch containing an improved release liner system

Publication Date: 2025.05.08 EUROMED

AI summary

An adhesive patch is described that contains an improved release liner for the treatment of various skin conditions.