Coextruded Polymeric Netting for Universal Adhesion
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Solution Overview
Problem
Conventional coextruded polymeric articles with adhesive systems are limited by the need for specific chemical groups and triggers for adhesion, which restricts their applications, are costly, and difficult for consumers to use, lacking universality and ease of application.
Innovation Solution
The development of coextruded polymeric nettings with first and second segments made of different materials, where the second segments extend past the first segments and include an adhesive on their surfaces, allowing for periodic bonding and creating a breathable, non-sticky tape that can be universally triggered for adhesion without the need for specific chemical groups or triggers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive systems use specific chemical groups and triggers (solvents, UV light, heat, magnetic forces) to achieve adhesion on demand, then adhesion performance can be controlled, but the system becomes restricted to specific applications, increases cost, and reduces ease of use
Solution Approach 1:
The patent changes the activation parameter from specific chemical triggers (solvents, UV light, heat, magnetic forces) to mechanical deformation. By applying stress or strain to the netting structure, the adhesive bonds are mechanically broken and reformed, enabling adhesion control without requiring specific chemical groups or specialized triggers. This makes the system universally applicable across different materials and environments.
Solution Approach 2:
The patent segments the adhesive function into discrete bondable regions distributed across the netting structure. Instead of a continuous adhesive layer requiring uniform trigger application, the adhesive is localized at specific junction points where netting elements intersect. This segmentation allows selective activation of adhesive bonds through localized mechanical deformation, improving both control and versatility.
2Reliability
If adhesive systems use specific chemical groups and triggers, then adhesion can be controlled, but the cost increases and the system becomes less accessible to consumers
Solution Approach 1:
The patent employs a simple mechanical activation mechanism that can be implemented with basic netting materials and adhesive applications. The activation method requires only manual manipulation or simple mechanical devices, eliminating the need for expensive specialized equipment (solvent dispensing systems, UV lamps, heating apparatus, magnetic field generators). This dramatically reduces manufacturing costs and makes the technology accessible to consumers.
3Reliability
If adhesive is applied broadly to ensure coverage, then adhesion performance improves, but breathability and non-sticky properties are compromised
Solution Approach 1:
The patent applies adhesive only at specific local regions where netting elements intersect or contact, rather than coating the entire surface. This localized adhesive application ensures bonding occurs only where mechanically necessary, while leaving the majority of the netting surface open and non-adhesive. This maintains breathability and prevents unwanted adhesion to skin or other surfaces.
Solution Approach 2:
The netting structure itself provides a porous, open framework that allows air and fluid passage. By combining this porous structure with localized adhesive application at junction points, the system maintains overall breathability while achieving sufficient adhesion at contact points. The porous nature prevents the adhesive from creating a continuous barrier that would block breathability.
Data Source
AI summary
Articles comprising first and second coextruded polymeric nettings are described. The articles comprise a plurality of pairs of first segments comprising a first material. Adjacent first segments are joined together via a second segments comprising second material, wherein the second segments extend past the first major surface of each first adjacent segments. The articles further include an adhesive on at least one of the first or second major surfaces of the first segment. The first segments, second segments, and third material each extend continuously for at least 5 mm in the machine direction, and the first and second materials of adjacent pairs are periodically bonded together in the machine direction. A portion of some of the first segments of the first coextruded polymeric netting are engaged between some of the adjacent first segments of the second coextruded polymeric netting.