Two-Layer UV Nail Gel Coating for Fast Cure and Soak-Off Removal
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Solution Overview
Problem
Existing methacrylate-based nail gels are not as fast curing as acrylic systems, have a tacky surface, and are difficult to remove as a single sheet, often breaking into pieces during the removal process.
Innovation Solution
A two-layer composition comprising a methacrylate-based base coat and an acrylate-based topcoat is applied to the nail, where the acrylate topcoat reinforces the methacrylate base, allowing for easy removal as a single sheet using acetone.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If methacrylate-based base coat is used, then the gel can be soaked off in acetone, but the surface becomes tacky and curing is slow
Solution Approach 1:
The nail gel system is divided into two separate layers: a methacrylate-based base coat that provides soak-off capability and an acrylate-based top coat that provides fast curing and non-tacky surface. This segmentation allows each layer to perform its specialized function without compromise.
Solution Approach 2:
The invention uses a composite structure combining methacrylate and acrylate polymers in distinct layers. The methacrylate base coat and acrylate top coat together create a system that exhibits properties superior to either component alone, achieving both soak-off capability and fast curing.
2Productivity
If acrylate-based topcoat is applied, then curing speed increases and surface becomes non-tacky, but the composition becomes more complex
Solution Approach 1:
The system segments the nail gel into two functional layers with distinct chemical compositions. The acrylate top coat is specifically designed to cure rapidly and provide a non-tacky surface, while the methacrylate base coat handles the soak-off function.
Solution Approach 2:
The two-layer system serves multiple functions simultaneously: the base coat provides adhesion and soak-off capability, while the top coat provides fast curing, non-tacky surface, and enhanced durability. Together they create a universal nail gel composition that addresses multiple performance requirements.
3Ease of manufacture
If methacrylate-based gel is used, then soak-off capability is achieved, but the gel breaks into pieces during removal
Solution Approach 1:
The invention segments the gel system into two layers with different removal characteristics. The acrylate top coat maintains structural integrity and removes as a single sheet, while the methacrylate base coat remains on the nail plate to provide ongoing protection.
Solution Approach 2:
The composite structure of methacrylate base coat and acrylate top coat creates a system where the top coat's superior mechanical properties prevent fragmentation during removal. The layered composite maintains integrity while enabling complete removal of the top layer.
4Productivity
If oxygen inhibition is present during curing, then the gel remains tacky, but complete curing is prevented
Solution Approach 1:
The acrylate-based top coat in the composite system exhibits resistance to oxygen inhibition, allowing complete curing even in the presence of atmospheric oxygen. This property distinguishes it from the methacrylate base coat and enables a non-tacky surface finish.
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 composition provides a durable and aesthetically pleasing nail coating that can be easily and completely removed as a single sheet, overcoming the drawbacks of existing methacrylate-based gels.
Implementation Method 1
Nail gels are typically composed of UV light curable acrylate and/or methacrylate monomer(s) or oligomer(s), which, once exposed to ultraviolet light, polymerize into durable (meth)acrylic polymer(s)
Implementation Method 2
Utilization of the right methacrylates in the composition can also create a base coat that can soak off as polymeric sheets in a few minutes in acetone
Data Source
AI summary
A non-toxic UV light-curable methacrylate base coating is applied to a nail, followed by a harder acrylate-based coating. The resulting gel is easily and completely removable from the nail by a short soak in a common solvent such as acetone.