Polyester Fabric Treatment for Durable Sweat Odor Reduction
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Solution Overview
Problem
Textile fabrics, especially those made of polyester, often develop unpleasant odors due to human perspiration that are difficult to remove and can intensify with washing, and existing solutions using biocides pose environmental and skin safety concerns.
Innovation Solution
Treatment of polyester textile fabrics with reaction products of aliphatic monoamines or polyamines with aliphatic monoepoxides, combined with monoisocyanates or polyisocyanates, to create a barrier that minimizes odor formation and facilitates sweat removal during washing, without using biocides.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If biocides such as antimicrobials are used to treat polyester articles, then odor buildup is reduced, but environmental harm and adverse effects on human skin occur
Solution Approach 1:
The patent extracts and eliminates biocides from the treatment process while maintaining odor control functionality through alternative means - specifically through improved fabric structure and washing process optimization that physically remove odor-causing substances without requiring harmful chemical agents
Solution Approach 2:
The patent introduces an intermediary mechanism - a specialized washing process using controlled pH solutions and mechanical action - that mediates between the need for odor removal and the avoidance of biocides, achieving odor control through physical-chemical cleaning rather than antimicrobial killing
2Object-generated harmful factors
If polyester fabrics are repeatedly worn and washed, then odor intensity increases, but fabric structure degrades
Solution Approach 1:
The patent applies preliminary action by pre-treating polyester fabrics with specific finishing agents before use, creating a protective surface layer that prevents odor-causing substances from penetrating and accumulating in the fabric structure during subsequent wear and washing cycles
Solution Approach 2:
The patent utilizes parameter changes by modifying the surface properties of polyester fabric through chemical finishing treatments that alter wettability, surface charge, and porosity, thereby changing how the fabric interacts with sweat and odor-causing bacteria to reduce odor accumulation while maintaining structural integrity
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 treated fabrics significantly reduce unpleasant odor formation and enhance wearing comfort, maintaining odor control even after repeated use and washing, while being environmentally friendly and safe for skin.
Implementation Method 1
reaction products of aliphatic monoamines or polyamines or of a mixture of such amines with aliphatic monoepoxides or polyepoxides
Implementation Method 2
facilitate the removability of sweat by laundering
Data Source
AI summary
Mixtures are described which contain reaction products of one or more amines with one or more epoxides and additionally isocyanates. Applying such mixtures to textile fabrics, especially polyester fiber fabrics, reduces or prevents unpleasant sweaty odor after physical exercise. The effects are very durable to laundering.