Soluble Film Barrier Patch for Skin Conformability
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Solution Overview
Problem
Existing cosmetic patches are often ineffective in releasing active ingredients, are dry and uncomfortable to wear, and fail to conform to the dynamic contours of the skin due to their inflexible nature, leading to gaps and discomfort during long-term use.
Innovation Solution
A multi-layered beauty care product featuring a barrier patch with a water-soluble film zone containing a skin active agent and a pressure-sensitive adhesive, where the soluble film zone is made of a water-soluble film forming polymer that dissolves upon hydration, releasing the active agent and providing a dynamic modulus for improved comfort and conformity to the skin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing cosmetic patches use flat two-dimensional substrates, then manufacturing is simple, but the patches cannot conform well to three-dimensional skin surfaces
Solution Approach 1:
The patent introduces a soluble film layer that dynamically changes its properties during use. The film transitions from an initial rigid state that provides structural support to a softened state as it hydrates, allowing it to conform to skin contours. This dynamic transformation resolves the contradiction between maintaining structural integrity and achieving conformability.
Solution Approach 2:
The soluble film's physical parameters (modulus, flexibility) change over time as it absorbs water. The film starts with high modulus for structural support, then gradually softens as hydration progresses, enabling it to adapt to the three-dimensional skin surface without requiring complex pre-formed structures.
2Ease of operation
If patches are made inflexible to maintain structural integrity, then manufacturing is easier, but they become uncomfortable and create gaps during skin movement
Solution Approach 1:
The patch transitions from a rigid initial state to a flexible used state through the hydration of the soluble film. This dynamic property change allows the patch to maintain structural integrity during application and storage, then become comfortable and flexible during wear as the film softens and conforms to moving skin surfaces.
Solution Approach 2:
The soluble film is pre-designed to undergo controlled hydration and softening during the intended wear period. This preliminary preparation of the material properties ensures that the patch will naturally adapt to skin movement and contours during use, providing comfort without requiring active adjustment.
3Productivity
If active ingredients are embedded in reservoirs with adhesives, then delivery is structured, but diffusion is limited and chemical reactions may occur
Solution Approach 1:
The patent extracts the active ingredient from the conventional reservoir-adhesive system and incorporates it directly into the soluble film layer. This eliminates the diffusion barriers presented by reservoir membranes and adhesive layers, allowing direct contact between the active ingredient and skin for improved release efficiency.
Solution Approach 2:
The soluble film itself serves as the intermediary medium that delivers the active ingredient to the skin. By making the film water-soluble, it creates a direct transfer pathway that avoids chemical interactions with adhesive materials while maintaining structured delivery through the film's matrix.
4Adaptability or versatility
If patches remain rigid during wear, then structural support is maintained, but they do not conform as skin flexes and creates discomfort
Solution Approach 1:
The soluble film provides time-dependent mechanical properties, maintaining higher structural support in the initial dry state, then progressively softening as hydration occurs. This dynamic adaptation allows the patch to provide structural support when needed while conforming to skin movement during the wear period.
Solution Approach 2:
The physical parameters of the film, particularly its modulus and flexibility, change as a function of water content. This parameter transformation enables the patch to maintain structural integrity initially, then progressively increase adaptability to skin movement throughout the wear period.
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
The product effectively releases skin active agents, enhances comfort by conforming to skin contours, and maintains efficacy even in low water environments, improving skin appearance over time.
Implementation Method 1
a water soluble film forming polymer... As the soluble film forming polymer dissolves, the active is released
Implementation Method 2
a layer of pressure-sensitive adhesive by which the system can be brought into close contact with the skin
Data Source
AI summary
A multilayer beauty care product or method is provided. The beauty care product has a water soluble film zone that includes a water soluble film forming polymer and a cosmetic composition with an effective amount of a skin active agent. The product also has a barrier patch having a backing layer and a pressure sensitive adhesive zone. The adhesive zone and the water soluble film zone are continuous, discontinuous, or a combination thereof. The product exhibits a dynamic modulus.