Single-Ply Ventilation Insert With Self-Sealing Textile Apertures
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Solution Overview
Problem
Existing ventilation inserts for textiles are prone to issues such as swellable material egress during processing, high basis weight, stiffness, and inflexibility due to their multi-ply construction, which complicates stitching and adherence.
Innovation Solution
A single-ply ventilation insert with fusional bonding of absorbent material to the textile ply, using a mixture of polymerizable monomers, crosslinkers, wetting agents, and initiators to create a self-sealing, flexible, and low-thickness structure that captures the absorbent material, allowing for regional attachment and controlled liquid absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a multi-ply construction with binder is used to fix the swellable material, then the material is secured during processing, but the basis weight increases significantly
Solution Approach 1:
The invention merges the fixing function and the absorbent function into a single integrated ply structure. The swellable material is directly incorporated into the ply matrix without requiring separate binder layers or additional fixing plies, thereby eliminating the need for extra material that would increase basis weight while still providing secure fixation during processing.
Solution Approach 2:
The invention uses a composite material structure where the swellable material is chemically or physically integrated with the textile fibers in a single ply. This composite approach allows the material to exhibit both structural integrity for processing and absorbent functionality, avoiding the need for separate binder layers that would add weight.
2Reliability
If a multi-ply construction is used to enclose the swellable material, then the material is contained, but the insert becomes stiff and inflexible
Solution Approach 1:
The invention combines the containment function with the single ply structure itself. The ply is designed with an openwork or porous pattern that inherently contains the swellable material within its structure without requiring multiple enclosing layers, thereby maintaining flexibility while achieving containment.
Solution Approach 2:
The invention employs a porous or openwork ply structure that allows the swellable material to be contained within the ply matrix while maintaining air permeability and flexibility. The porous structure provides both mechanical containment and functional ventilation, eliminating the need for dense multi-ply constructions that would reduce flexibility.
3Strength
If multiple plies are joined together to form the ventilation insert, then the structural integrity is improved, but the processing complexity increases
Solution Approach 1:
The invention merges multiple functional layers into a single integrated ply that performs both structural and absorbent functions. The single ply is designed with internal reinforcement patterns or bonded zones that provide structural integrity without requiring additional plies, thereby simplifying the overall construction from seven plies to one ply with enhanced internal architecture.
Solution Approach 2:
The invention segments the single ply into different functional zones with varying densities or bonding patterns. Certain regions of the ply have higher structural reinforcement while other regions maintain openness for ventilation, allowing the single ply to replace multiple homogeneous plies and reduce processing complexity.
4Quantity of substance
If the ply thickness is increased to accommodate absorbent material, then the liquid absorption capacity is improved, but the flexibility and processability are reduced
Solution Approach 1:
The invention applies absorbent material selectively in specific local zones rather than uniformly throughout the entire ply. The swellable material is concentrated in regions where liquid absorption is most needed, while other areas of the ply maintain thinner construction for flexibility and air circulation, thereby achieving high absorption capacity without overall thickness increase.
Solution Approach 2:
The invention uses a porous ply structure with controlled pore size and distribution that allows thin material to achieve high absorbent capacity. The porous architecture provides large surface area and capillary action for liquid uptake, enabling the ply to maintain thinness and flexibility while still accommodating sufficient absorbent material for effective liquid absorption.
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 results in a flexible, low-thickness ventilation insert with enhanced processing ease, self-sealing capabilities, and adjustable liquid absorption, maintaining flexibility and air circulation while minimizing weight and volume increase, suitable for various applications including moisture and microclimate regulation.
Implementation Method 1
treating the ply including the ventilation apertures with a mixture comprising (i) an absorbent material precursor comprising a polymerizable monomer or oligomer and a crosslinker, (ii) a wetting agent, and (iii) an initiator, and b) polymerizing the monomer or oligomer to form the absorbent material and to form a fusional bond between the absorbent material and the ply
Implementation Method 2
exposure of the ply to a liquid can cause at least some of the ventilation apertures to become closed by swelling of the absorbent material
Implementation Method 3
treating the ply including the ventilation apertures with a mixture comprising (i) an absorbent material precursor comprising a polymerizable monomer or oligomer and a crosslinker, (ii) a wetting agent
Data Source
AI summary
A ventilation insert for textiles, with at least one layer, covered at least partially by an absorption material and having ventilation openings, the openings being at least partially closeable via a liquid by swelling of the absorption material, obtainable by: a) treating a layer having ventilation openings with a mixture, containing a wetting agent, initiator, polymerizable monomer or oligomers, and a cross-linking agent, as a preliminary stage for the absorption material; and b) polymerizing the monomer or oligomer to form the absorption material while forming a bonded connection between the absorption material and the layer. The ventilation insert has a relatively low thickness, a low weight per unit area, and high flexibility permanently and independently of moisture after economical production, via one layer, self-sealingly closing ventilation openings, and containing the absorption material. The absorption material is connected to the layer by bonding, at least in some regions.