Nanocellulose composite sheet for use as dermatological treatment or medical device
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Solution Overview
Problem
Conventional hydrogel-based medical dressings face challenges with poor contour conformability, inadequate skin adhesion, and limited transfer efficiency of dermatological agents due to their dry composition and complex production processes.
Innovation Solution
A nanocellulose composite sheet is developed, comprising a moisturized nanocellulose material bonded to a fabric by mechanical adhesion, allowing for high conformability, effective delivery of nano- and micro-particles, and optimized production for high-volume sheet production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional hydrogel formulations are used for dermatological masks, then moisture saturation and absorption are maintained, but contour conformability and skin adhesion are poor
Solution Approach 1:
The patent changes the physical state of cellulose from dry micronized particles to moisturized nanocellulose, fundamentally altering the material's properties. This parameter change enables the material to maintain moisture saturation while achieving superior contour conformability and skin adhesion, resolving the technical contradiction between moisture retention and shape adaptability
Solution Approach 2:
The invention creates a composite material system combining nanocellulose with specific polymers and dermatological agents. This composite structure allows the material to simultaneously achieve moisture saturation, contour conformability, and skin adhesion by integrating multiple functional components at the nanoscale level
2Quantity of substance
If conventional hydrogel formulations are used for dermatological masks, then moisture saturation is maintained, but transfer efficiency of active ingredients to skin is limited
Solution Approach 1:
The transition from micronized to nanoscale cellulose particles fundamentally changes the material's interaction with active ingredients. The increased surface area and modified surface chemistry at the nanoscale enhance the transfer efficiency of dermatological agents to the skin while maintaining moisture saturation, resolving the contradiction between moisture retention and ingredient delivery
3Quantity of substance
If micronized cellulose particles are used in porous absorbent structure, then absorbency is increased, but delivery of ingredients to skin becomes difficult
Solution Approach 1:
The patent fundamentally changes the particle size parameter from micronized to nanoscale, and transforms the material state from dry to moisturized. This dual parameter change enables the material to maintain high absorbency while dramatically improving the delivery of ingredients to skin, as the nanocellulose can penetrate and interact with skin at the molecular level
4Strength
If conventional medical dressings are produced using chemical, thermal, or solvent bonding processes, then bonding strength is achieved, but production efficiency and uniformity are reduced
Solution Approach 1:
The patent replaces complex chemical, thermal, or solvent-based bonding processes with a simplified mechanical bonding approach. The nanocellulose material inherently bonds to the substrate through mechanical interlocking and adhesion, eliminating the need for additional bonding steps and significantly improving production efficiency while maintaining uniformity and bonding strength
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 nanocellulose composite sheet provides enhanced skin adhesion, high porosity, and efficient delivery of dermatological agents, overcoming the limitations of traditional hydrogel formulations.
Implementation Method 1
a nanocellulose composite sheet comprising a moisturized nanocellulose material and a fabric, wherein the moisturized nanocellulose material and the fabric are bonded by mechanical adhesion
Implementation Method 2
Nanocellulose is similar to hydrogels and in particular to hydrogels of alginate, starch, non-nanocellulose, or other polymers, in that it retains a significant relative quantity of water
Data Source
AI summary
A nanocellulose composite sheet, comprising a moisturized nanocellulose material and a fabric is disclosed. The moisturized nanocellulose material and the fabric are bonded by mechanical adhesion. A method for manufacturing the nanocellulose composite sheet for use as a dermatological treatment or medical device, and an apparatus for manufacturing the nanocellulose composite sheet are also provided. The nanocellulose composite sheet has contour conformability, excellent skin-adhesion, and high capacity for moisture retention and release, and is ideal for dermatological treatments.