Silicone Textile Coating for Nonslip Grip Without Oil Leaching
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Solution Overview
Problem
Existing silicone coatings for textiles struggle to achieve a balance between nonslip properties and wearer comfort, as they often require excessive compression and can lead to aesthetic issues due to impregnation and leaching of oily substances, while also posing toxicity and odor concerns.
Innovation Solution
A process for coating textiles with a polyaddition-crosslinkable elastomeric silicone composition that includes specific polyorganosiloxanes, hydrogenopolyorganosiloxanes, and a hydrosilylation catalyst, with a controlled molar ratio of hydrogen atoms to alkenyl radicals, which is deposited and crosslinked using heat or infrared radiation, preventing impregnation and leaching while maintaining tack and nonslip functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If silicone composition is greatly impregnated into textile material to improve adhesion, then adhesion to skin is improved, but aesthetic problems occur and oily substances leach onto textile and packaging
Solution Approach 1:
The patent changes the chemical parameters of the silicone composition by specifying exact molar ratios of functional groups (0.8-1.5 ratio of Si-H to Si-alkenyl groups) and using specific polyorganosiloxane structures with controlled molecular weights and viscosity ranges. These parameter changes optimize the composition to achieve sufficient adhesion without excessive impregnation that causes oil leaching.
Solution Approach 2:
The patent creates a composite silicone composition combining multiple polyorganosiloxanes with different functions: elastic polyorganosiloxanes for comfort, crosslinkable polyorganosiloxanes for adhesion and structural integrity, and hydrogenopolyorganosiloxanes for controlled crosslinking. This composite approach balances adhesion properties while preventing harmful oil leaching.
2Strength
If compression of textile material is increased to provide nonslip effect, then nonslip function is improved, but wearer comfort deteriorates
Solution Approach 1:
The patent changes the mechanical parameters of the silicone elastomer by controlling the crosslinking density through specific molar ratios and using polyorganosiloxanes with optimized molecular weights (10,000-1,000,000 g/mol) and viscosities (10-100,000 cSt). These parameter changes create an elastomer with optimal balance between adhesion strength for nonslip function and elasticity for wearer comfort.
3Strength
If tack of coated textile material is increased to reduce compression needed, then nonslip function is improved, but bonding sensation becomes unpleasant and uncomfortable
Solution Approach 1:
The patent precisely controls the tack properties by adjusting the molar ratio of Si-H to Si-alkenyl groups (0.8-1.5) and selecting polyorganosiloxanes with specific viscosity ranges (10-100,000 cSt) and molecular weights. This optimization achieves sufficient tack to reduce required compression while avoiding excessive bonding sensation that causes discomfort.
4Reliability
If silicone composition is used to provide adhesion and nonslip properties, then functional performance is improved, but toxicity and odor concerns arise
Solution Approach 1:
The patent addresses toxicity and odor by selecting specific polyorganosiloxane compositions with controlled molecular structures and purities. The use of medical-grade or cosmetic-grade silicone base materials with defined molecular weight ranges and the optimization of crosslinking chemistry ensure the final elastomer meets safety requirements while maintaining functional performance.
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 solution provides a textile with optimal tack for nonslip properties without excessive compression, prevents oily substance leaching, and ensures the coating is nontoxic and odorless, maintaining a comfortable wear experience while being wash-resistant and rub-resistant.
Implementation Method 1
crosslinking through the polyaddition of the unsaturated groups (alkenyl, e.g. Si-Vi, groups) of a polyorganosiloxane onto hydrogens of the same or another polyorganosiloxane
Implementation Method 2
polyaddition-crosslinkable elastomeric silicone composition
Implementation Method 3
crosslinking of said silicone composition (A) is effected by heating and/or by infrared radiation
Implementation Method 4
crosslinking of said silicone composition (A) is effected by heating and/or by infrared radiation
Data Source
AI summary
The present invention relates to a method of coating a textile with a silicon elastomer composition that can be crosslinked by polyaddition, enabling the textile to be given a non-slip property. The invention also relates to textile articles thus coated, such as clothing and lace, exhibiting good adhesion to various mediums, such as skin, another textile, a fibrous medium, etc.