CO2 Bubble Adhesive Sheet for Long-Lasting Body Affixation
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Solution Overview
Problem
Existing adhesive sheets containing carbon dioxide gas for promoting blood circulation lack persistence, affixability, and conformability, especially when used on large body parts or areas with intense movement, and they often release gas too quickly or require continuous high pressure.
Innovation Solution
An adhesive sheet containing carbon dioxide gas bubbles within a specific fraction and size range, sealed in a low gas-permeable container, with controlled bubble fraction between 10% and 40% and bubble diameter of 5 mm or less, and a carbon dioxide content of 100 to 20,000 ppm, ensuring enhanced blood circulation promotion and improved affixability and conformability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If adhesive sheets are packaged flat in a container, then storage space is optimized, but the adhesive sheet cannot be applied directly without unfolding and risk of adhesive contact with skin
Solution Approach 1:
The adhesive sheet is segmented into multiple layers: a backing layer, an adhesive layer, and a release liner. This segmentation allows the adhesive to be contained within the layered structure during storage, enabling flat packaging while preventing skin contact until application.
Solution Approach 2:
The adhesive layer is nested between the backing layer and the release liner, creating a protective sandwich structure. This nesting allows the adhesive sheet to be stored flat in a compact container while the layered structure prevents adhesive exposure until the release liner is removed at application time.
2Duration of action of moving object
If adhesive sheets are stored in a container, then portability is improved, but bacterial growth may occur in the container
Solution Approach 1:
The container is designed to maintain a sterile, inert environment that prevents bacterial growth. The sealed container structure creates a protective atmosphere that isolates the adhesive sheet from contaminants during storage and transport.
Solution Approach 2:
The adhesive sheet is extracted from the container only at the moment of application. The container remains sealed during storage to prevent bacterial contamination, and the adhesive sheet is removed and applied immediately before use, minimizing exposure time.
3Productivity
If adhesive sheets are applied from a flat package, then application speed is improved, but adhesive may contact skin during unfolding
Solution Approach 1:
The release liner is pre-attached to the adhesive layer in a preliminary protective action. This allows the adhesive sheet to be quickly applied by simply peeling off the release liner, eliminating the need for careful unfolding and preventing adhesive skin contact during the application process.
Solution Approach 2:
The release liner acts as an intermediary protective layer between the adhesive and the skin. It can be quickly removed in one motion, enabling fast application while preventing adhesive contact with skin during the removal process.
Data Source
AI summary
Provided is an adhesive sheet for affixation to the body which is excellent in enhancement and persistence of the blood circulation promoting action, has high affixability and conformability as a sheet, and is easily and widely applicable to the body in any use situation. That is, the present invention relates to an adhesive sheet for affixation to the body housed in a container, containing the following components (A) and (B): (A) bubbles containing carbon dioxide gas in a bubble fraction of 10% or more and 40% or less, and (B) water, wherein the total area occupied by bubbles having an imaginary diameter of 5 mm or more is 10% or less, in 100% of the surface area of the adhesive sheet for affixation to the body, a content of carbon dioxide gas in the total amount of the adhesive sheet for affixation to the body is from 100 to 20,000 ppm, and the adhesive sheet for affixation to the body is sealed in a low gas-permeable container.