Non-Sticky Silicone Patch for Lip Fullness
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Solution Overview
Problem
Existing lip patches and skin laminate structures fail to add fullness to the lips, are uncomfortable due to adhesive burden, and have poor followability to skin deformation, making them unsuitable for delicate areas like the face and lips.
Innovation Solution
A non-sticky body surface patch made of silicone rubber with a thickness ranging from 50 to 600 μm and rubber hardness of 20 or less, which is attachable to body surfaces to provide fullness without burden and excellent followability, using a release sheet and adhesion agents like polybutene or polyisobutene with moisturizing components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive layers are used to attach patches to the skin, then the patches can be fixed in place, but the skin burden increases and uncomfortable feeling occurs
Solution Approach 1:
The patent removes the adhesive layer from the patch structure entirely. Instead of using adhesive to attach the patch to the skin, the invention uses a non-adhesive silicone rubber sheet that can be positioned and fixed by other means (such as the elastic force of the lips or mechanical retention features), thereby eliminating the harmful adhesive burden on the skin while maintaining patch fixation.
Solution Approach 2:
The patent introduces a release sheet as an intermediary between the patch and the skin. This release sheet allows the patch to be easily applied and removed without direct adhesive contact with the skin, reducing skin burden while still enabling reliable positioning and fixation of the patch during use.
2Shape
If rigid materials are used to add fullness to the lips, then the fullness effect is achieved, but the followability to skin deformation deteriorates
Solution Approach 1:
The patent uses a flexible silicone rubber sheet instead of rigid materials to add fullness to the lips. The silicone rubber sheet can be molded into a shape that provides the desired fullness effect while maintaining flexibility to conform to and follow lip movements and skin deformations, thereby resolving the contradiction between achieving fullness and maintaining followability.
Solution Approach 2:
The patent changes the material parameter from rigid to flexible silicone rubber with specific hardness characteristics. By selecting silicone rubber with appropriate hardness and elasticity parameters, the patch can provide sufficient structural support for fullness while simultaneously adapting to dynamic skin movements, thus achieving both fullness effect and followability.
3Duration of action of stationary object
If adhesive layers are used to ensure patch durability, then the patch remains attached longer, but the skin burden increases
Solution Approach 1:
The patent eliminates the adhesive layer that causes skin burden while maintaining patch durability through alternative fixation mechanisms. The silicone rubber sheet's elasticity and the mechanical design of the patch allow it to remain attached for extended periods without relying on adhesives, thus achieving durability without increasing skin burden.
Data Source
AI summary
A non-sticky body surface patch is provided, which is attachable on a body surface to add a look of fullness to the body surface, exhibits excellent followability to skin deformation, and imposes little burden on body surfaces and thus is widely applicable to body surfaces. The non-sticky body surface patch includes a silicone rubber having a thickness in the range from 50 to 600 μm, wherein the silicone rubber consists of a silicone rubber composition having a rubber hardness of 20 or less measured with a Type A durometer as defined in JIS K6249 standard.