Composite Touch-and-Close Fastener for Wash-Resistant Cleaning Textiles
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Solution Overview
Problem
Existing flat adhesive fastener systems used in cleaning systems, such as mops, are not robust enough to withstand frequent washing and disinfection cycles, leading to delamination and reduced adhesion over time, failing to meet the requirements for durability and longevity in high-temperature sterilization environments.
Innovation Solution
A flat touch-and-close fastener part is designed with weft threads made of polyamide for longer sections and shorter weft threads made of polyester or predominantly plastic materials, incorporating different chemical and physical properties, along with a finish using solvent-free, moisture-crosslinking hot-melt adhesive, and optionally including metal threads for electrical conductivity and heat disinfection capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a single material is used for the entire thread system, then basic fabric stability is achieved and pile threads do not easily come out, but the adhesion and sealing ability are lost with frequent washing especially at high temperatures
Solution Approach 1:
The patent applies local quality by using different materials for different parts of the thread system. Specifically, polyester material is used for warp and weft threads to maintain fabric stability, while polyamide material is used for pile threads to maintain adhesion and sealing ability even after frequent washing and high-temperature disinfection.
Solution Approach 2:
The patent employs composite materials by combining polyester and polyamide in the same thread system. This composite approach allows the fabric to benefit from polyester's dimensional stability while simultaneously gaining polyamide's superior adhesion properties that resist degradation from washing and disinfection processes.
2Reliability
If polyamide material is used for the entire thread system, then adhesion and sealing ability are maintained with frequent washing, but the fabric stability decreases when water enters the material
Solution Approach 1:
The patent applies local quality by using different materials for different parts of the thread system. Specifically, polyester material is used for warp and weft threads to maintain fabric stability, while polyamide material is used for pile threads to maintain adhesion and sealing ability even after frequent washing and high-temperature disinfection.
Solution Approach 2:
The patent employs composite materials by combining polyester and polyamide in the same thread system. This composite approach allows the fabric to benefit from polyester's dimensional stability while simultaneously gaining polyamide's superior adhesion properties that resist degradation from washing and disinfection processes.
3Reliability
If the adhesive fastener part is designed to be robust for use, then it can counteract abrasion and tissue delamination, but the manufacturing complexity increases
Solution Approach 1:
The patent employs composite materials by combining polyester and polyamide in the same thread system. This composite approach allows the fabric to benefit from polyester's dimensional stability while simultaneously gaining polyamide's superior adhesion properties that resist degradation from washing and disinfection processes.
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 system achieves enhanced durability and resistance to washing and disinfection agents, maintaining adhesion and structural integrity through the combination of materials and finishes, effectively meeting the demands for long-term use and high disinfection standards.
Implementation Method 1
a finish using solvent-free, moisture-crosslinking hot-melt adhesive
Implementation Method 2
optionally including metal threads for electrical conductivity
Implementation Method 3
heat disinfection capabilities
Data Source
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AI summary
A flat touch-and-close fastener element, which is detachably connected to a second touch-and-close fastener element, thereby forming a touch-and-close closure, and which consists of a system of threads (10) comprising at least warp and weft threads as well as pile threads, is characterized in that the individual threads have different chemical and/or physical properties and, for this purpose, consist of different materials.