Adhesive Sheet Stiffening Layer for Microcurrent Skin Application
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Solution Overview
Problem
Adhesive sheets used for health appliances, especially large area microcurrent sheets, face issues with adhesive surfaces sticking together due to limited stretchability and thickness, making it difficult to hold them without sticking and properly place the appliance during replacement.
Innovation Solution
An adhesive sheet design featuring a health appliance sticking portion with first and second release papers, where the second release paper provides stiffness to maintain a planar state and prevent adhesive surfaces from sticking, allowing easy peeling and proper placement of the microcurrent sheet.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the adhesive sheet is made thin and flexible, then it can adhere well to the skin, but the adhesive surfaces stick to each other when held
Solution Approach 1:
The adhesive sheet is divided into multiple functional layers: a flexible adhesive layer for skin adherence, a stiffening layer to prevent self-adhesion, and a release paper for controlled application. This segmentation allows each layer to perform its specific function without interfering with others.
Solution Approach 2:
The adhesive sheet uses a composite structure combining materials with different properties: a flexible adhesive material (such as acrylic or silicone) paired with a stiffening material (such as plastic or rigid paper). This composite construction provides both the flexibility needed for skin adherence and the rigidity needed to prevent self-adhesion.
2Area of stationary object
If the adhesive sheet has large area for microcurrent sheet, then it can cover the affected area, but it becomes difficult to hold without adhesive surfaces sticking
Solution Approach 1:
The large adhesive sheet is segmented into a flexible adhesive portion and a separate stiffening layer. The stiffening layer acts as a handling aid, providing structural support that makes it easy to hold and position the large-area sheet without the adhesive surfaces sticking together.
Solution Approach 2:
The stiffening layer serves as an intermediary between the user's hand and the flexible adhesive sheet. It provides a non-adhesive surface that can be held and manipulated, while the flexible adhesive layer remains protected and ready for application to the skin.
3Adaptability or versatility
If the adhesive sheet is very flexible, then it conforms to skin contours, but the adhesive surfaces stick due to warpage and movement
Solution Approach 1:
The adhesive sheet is segmented into a flexible adhesive layer for skin conformity and a separate stiffening layer for planar stability. The stiffening layer prevents warpage and maintains the sheet in a stable state during handling, while the flexible layer maintains its ability to conform to skin contours during application.
Solution Approach 2:
The adhesive sheet uses a flexible thin film structure that can conform to skin contours, combined with a stiffening element that prevents excessive bending and warpage. This combination allows the sheet to be flexible enough for skin adaptation while maintaining sufficient structural stability.
Data Source
AI summary
An adhesive sheet with flexibility for attaching a health appliance to a skin, including: a health appliance sticking portion which is a portion on which the health appliance is stuck; an adhesive portion for making the adhesive sheet adhere to the skin; first release paper stuck on the health appliance sticking portion in a peelable manner; and second release paper having an outer edge nearly identical to an outer edge of the adhesive portion in shape and size and stuck on the adhesive portion in a peelable manner so as to surround the first release paper, wherein the second release paper has stiffness that allows the second release paper to support the adhesive sheet and maintain a planar state in a state in which the first release paper is removed.