Double-Sided UV Adhesive Composition for Fast Curing and Clean Removal
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Solution Overview
Problem
Existing nail adhesives either adhere quickly but not strongly, or adhere firmly but slowly, and lack waterproof performance and ease of removal.
Innovation Solution
A UV double-sided adhesive composed of a first and second PET release film with a UV curing adhesive layer containing fluorine modified core-shell polyacrylic acid modified resin, polyurethane acrylic resin, tackifying acrylic resin, and photoinitiator, allowing for photocuring twice for enhanced adhesion and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If ordinary removable double-sided adhesive nano tape is used, then the application speed is fast (3-5 minutes), but the adhesion strength is insufficient and waterproof performance is poor
Solution Approach 1:
The patent changes the chemical composition parameters of the adhesive by incorporating fluorinated polymers and specific resin blends, transforming the adhesive from ordinary removable type to a formulation that achieves both fast application and strong, waterproof adhesion through optimized molecular structure and intermolecular forces
Solution Approach 2:
The patent uses composite materials by combining fluorinated polymers with specific resins and additives to create a multi-component adhesive system that integrates the benefits of rapid setting with enhanced adhesion strength and waterproof performance that neither component could achieve alone
2Strength
If canned or tubular solid UV glue is used, then the adhesion strength is firm and waterproof, but the application time is slow (30-50 minutes)
Solution Approach 1:
The patent optimizes the photopolymerization parameters by selecting specific photoinitiators and adjusting UV curing conditions, enabling the adhesive to achieve full adhesion strength in significantly reduced time compared to conventional UV glues, thus resolving the contradiction between strength and application time
Solution Approach 2:
The adhesive is pre-formulated with optimized resin blends and photoinitiators that prepare the chemical structure for rapid polymerization, allowing the curing process to proceed much faster than conventional UV adhesives while maintaining firm adhesion strength
3Ease of manufacture
If conventional adhesives are used, then the application process is simple, but the removal process is difficult and leaves marks
Solution Approach 1:
The patent modifies the chemical parameters of the adhesive formulation by incorporating fluorinated polymers with low surface energy and specific resin combinations, creating an adhesive that bonds strongly during use but can be removed cleanly without leaving marks, thus resolving the contradiction between application simplicity and removal ease
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 adhesive provides fast and stable photocuring, excellent adhesion, waterproof performance, and easy removal without leaving marks, improving the nail application process and reducing labor costs.
Implementation Method 1
the glue layer is obtained by UV curing adhesive through photocuring
Implementation Method 2
2.5-3 parts of photoinitiator
Implementation Method 3
Fluorine is the element with the highest electronegativity in the periodic table. Its small radius, long C—F bond length, high bond energy, and spiral distribution of fluorine atoms connected to the main chain of fluorinated polymers along serrated C—C bonds provide a tight shield for the polymer main chain from direct external factors, thereby improving the weather resistance, oxidation resistance, and corrosion resistance of organic fluoropolymers. Organic fluorine compounds have low intermolecular cohesion, small molecular forces between air and polymer interfaces, low surface free energy, and low surface friction coefficient, endowing organic fluorine polymers with excellent water resistance, oil resistance, and wear resistance.
Data Source
AI summary
A UV double-sided adhesive that can be photocuring twice is provided, which is provided with a first PET release film, a glue layer, and a second PET release film in sequence. Adding fluorine modified core-shell polyacrylic acid modified resin to the glue layer can improve the photopolymerization stability of the glue layer of the present disclosure, and shorten the photopolymerization time during photocuring in practical use; on the other hand, while ensuring excellent adhesion in practical use, it is waterproof, easy to peel off, and leaves no marks. The UV double-sided adhesive has excellent adhesion, faster photocuring speed, and stable photocuring effect, it is waterproof, easy to peel off during cleaning, and does not leave marks. It solves problems of not being able to quickly attach and firmly wear, improves a tedious process of cleaning residual adhesive, enhances the wearing experience, and reduces labor costs in nail salons.