Calendered Oval-Section Textile for Windproof Comfort
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Solution Overview
Problem
Windproof textiles currently available are stiff and uncomfortable to wear due to their polymer membranes, which detract from user experience and wearability.
Innovation Solution
A multi-layer textile structure featuring a calendered intermediate layer made of textile fibers with a substantially oval cross-section, reducing air passage while maintaining breathability and softness, achieved through the calendering process that crushes threads to increase the transverse dimension of their cross-section.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a polymer membrane is used as a barrier layer in windproof textiles, then wind-blocking capacity is improved, but softness and wearability deteriorate
Solution Approach 1:
The patent changes the physical parameters of the intermediate layer by calendering textile fibers to create an oval cross-section with increased transverse dimension. This parameter change allows the textile structure to provide windproof properties through fiber arrangement rather than relying on a stiff polymer membrane, thereby maintaining softness and wearability while achieving wind-blocking capacity
Solution Approach 2:
The patent creates a composite multi-layer textile structure consisting of an inner layer, an intermediate layer with calendered fibers, and an outer layer. This composite structure replaces the traditional single polymer membrane approach with a combination of textile layers that collectively provide windproof properties while maintaining comfort and softness
2Reliability
If a polymer membrane is used to prevent air passage, then windproof properties are improved, but textile stiffness increases reducing comfort
Solution Approach 1:
The patent applies calendering to change the physical parameters of the intermediate layer fibers, transforming them from circular to oval cross-section with increased transverse dimension. This parameter modification enables the textile to achieve windproof properties through fiber geometry and arrangement rather than membrane stiffness, maintaining textile flexibility and comfort
3Reliability
If calendering is applied to increase transverse dimension of fibers, then air passage is reduced improving windproof properties, but fiber shape changes occur
Solution Approach 1:
The patent intentionally applies calendering to change the fiber cross-section shape from circular to oval, with the larger dimension of the oval oriented in the plane of the intermediate layer. This controlled shape parameter change reduces interstices between fibers, limiting air passage and improving windproof properties while maintaining textile flexibility
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 provides a windproof textile that is both soft and lightweight, enhancing comfort and wearability while maintaining high windproof and breathability standards, suitable for making high-quality windproof clothing like jackets.
Implementation Method 1
the intermediate layer being a layer of calendered textile, characterized in that the intermediate layer is formed by a plurality of threads having a substantially oval cross-section
Implementation Method 2
the intermediate layer is formed by a plurality of threads which, during said at least one step of calendering, are crushed such as to increase a transverse dimension of a cross-section thereof
Data Source
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AI summary
A multi-layer textile (1) comprises a first layer (2) of textile, a second layer (3) of textile and an intermediate layer (4) interposed between the first layer (2) and the second layer (3), the intermediate layer (4) being a layer of calendered textile. The intermediate layer (4) is formed by a plurality of threads (5) having a substantially oval cross-section, the threads (5) being arranged in such a way that a larger dimension (L) of said substantially oval cross-section is in a plane defined by the intermediate layer (4).