Surface Functionalization of Adhesive Fastener Parts
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Solution Overview
Problem
Existing methods for surface functionalization of adhesive fastener parts face challenges in miniaturization, abrasion resistance, and aging resistance, particularly when attempting to produce a large number of adhesive fastener elements on a small carrier area with desired properties such as adhesion, temperature resistance, and chemical resistance.
Innovation Solution
The method involves using proton and/or electron exchange media, specifically Brönsted acids and Lewis bases, to modify the surface energy of adhesive fastener parts, attaching functional groups that interact with the plastic material in a coating-free and age-resistant manner, allowing for adjustable chemical-physical properties and improved adhesion without the need for thick coatings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a thick additional coating is applied to improve adhesion and temperature resistance, then adhesion strength and temperature resistance are improved, but the size of adhesive fastener elements increases significantly, preventing miniaturization
Solution Approach 1:
The patent replaces mechanical/physical coating systems with high-energy radiation processing. Instead of applying thick additional coatings mechanically, the invention uses electron beams or ion beams to induce crosslinking and functional group formation directly within the polymer matrix, achieving enhanced adhesion and temperature resistance through molecular-level modifications rather than bulk material addition.
Solution Approach 2:
The invention changes the physical and chemical parameters of the polymer material through high-energy radiation. By controlling radiation dose, beam energy, and atmospheric conditions, the patent modifies crosslinking density, functional group concentration, and molecular weight distribution, thereby tuning adhesion strength and temperature resistance without altering the macroscopic dimensions of the adhesive fastener elements.
2Strength
If conventional coatings are applied to improve surface properties, then adhesion is improved, but the coatings are not abrasion-resistant and not resistant to aging
Solution Approach 1:
The patent replaces conventional chemical coating systems with physical high-energy radiation processing. Electron beams and ion beams induce crosslinking and functional group formation directly within the polymer matrix, creating a cohesive, integrated surface layer that is inherently resistant to abrasion and aging, rather than applying separate coating layers that can deteriorate over time.
Solution Approach 2:
The invention creates a composite structure at the molecular level within the polymer matrix. Through radiation-induced crosslinking, a three-dimensional network is formed that combines the base polymer with crosslinked regions and functional groups, creating a composite material system with enhanced mechanical strength, abrasion resistance, and aging resistance while maintaining adhesion properties.
3Adaptability or versatility
If high energy processing is used to modify surface energy and attach functional groups, then chemical-physical properties can be adjusted in a coating-free manner, but the process complexity increases
Solution Approach 1:
The patent employs high-energy radiation processing as a universal method that can achieve multiple objectives simultaneously: surface energy modification, crosslinking, functional group formation, and purification. By using electron beams or ion beams as a single processing tool, the invention can adjust various chemical-physical properties (adhesion, temperature resistance, chemical resistance) without requiring multiple different equipment systems or processing steps.
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
This approach enables cost-effective, miniaturized surface functionalization of adhesive fastener parts with enhanced adhesion, temperature resistance, and chemical resistance, ensuring the desired properties are maintained over time and suitable for various applications, including aerospace and upholstery production.
Implementation Method 1
the surface energy of the adhesive fastener part is modified using high energy by means of a proton and/or electron exchange medium in such a way that the chemical-physical properties of the adhesive fastener part material can be adjusted
Implementation Method 2
the surface energy of the adhesive fastener part is modified using high energy by means of a proton and/or electron exchange medium
Implementation Method 3
functional groups of the exchange medium being attached to the adhesive fastener part material
Data Source
AI summary
The invention relates to a method for functionalising the surfaces of adhesive closing parts which form, with correspondingly formed adhesive closing parts, an adhesive closure that can be repeatedly opened and closed. The surface energy of the adhesive closing part is modified by means of a proton and/or electron exchanging medium, especially in the form of donors or collectors, using high energy in such a way that the physicochemical properties of the material of the adhesive closing part can be adjusted without a coating and with ageing resistance, by the attachment of functional groups of the exchanging medium to the adhesive closing part material. The invention also relates to a device for carrying out one such method.