Polygon Monofilament Yarn Geometry for Shower-Resistant Textiles

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Solution Overview

Problem

Existing industrial textiles face issues with high power shower resistance, cracking, fibrillation, poor warp coverage, and difficult seaming due to flat rectangle shaped yarns, leading to uneven surfaces and potential breakage during use.

Innovation Solution

The use of polygon-shaped monofilament yarns with specific corner angles and radii, providing improved bending behavior and seaming properties, directing cleaning flows effectively and preventing splashing, while maintaining a smooth surface.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Shape

If flat rectangle shaped yarns are used, then good warp coverage and smooth surface are achieved, but high power shower resistance deteriorates causing cracking and fibrillation

Engineering Contradiction:

Improvesurface smoothnessVSAvoidhigh power shower resistance

Core Design Contradiction:

ShapeVSReliability

Solution Approach 1:

The invention applies curvature by rounding the corners of the yarn cross-section. Instead of sharp rectangular corners, the yarn has rounded corners with specific radii (first two corners: 0.1-0.15 mm, second two corners: 0.075-0.1 mm). This curvature prevents stress concentration during high power shower cleaning, eliminating cracking and fibrillation while maintaining smooth surface quality.

Inventive Principle:

Principle #14Spheroidality (Curvature)

2Shape

If flat rectangle shaped yarns are used, then good warp coverage is achieved, but seaming difficulty increases due to corner resistance

Engineering Contradiction:

Improvewarp coverageVSAvoidseaming ease

Core Design Contradiction:

ShapeVSEase of operation

Solution Approach 1:

The rounded corners of the yarn cross-section eliminate the sharp edges that resist seaming yarn passage. The curved geometry allows seaming yarn to pass through loop channels more easily during textile construction, significantly improving seaming ease while preserving the flat yarn's good warp coverage characteristics.

Inventive Principle:

Principle #14Spheroidality (Curvature)

3Shape

If flat rectangle shaped yarns are used, then smooth surface is achieved, but water splashing increases from flat surfaces

Engineering Contradiction:

Improvesurface smoothnessVSAvoidwater splashing

Core Design Contradiction:

ShapeVSObject-generated harmful factors

Solution Approach 1:

The rounded corners modify the interaction between water shower and yarn surface. Instead of water splashing randomly from sharp edges, the curved surfaces guide water flow more smoothly, reducing random splashing while maintaining the overall smooth surface appearance of the textile.

Inventive Principle:

Principle #14Spheroidality (Curvature)

Data Source

PatentEP4108818B1An industrial textile comprising a monofilament yarn

Publication Date: 2025.12.10 VALMET TECH INC

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AI summary

According to an example aspect of the present invention, there is provided a monofilament yarn (10), which has a polygon cross-section having a width and a height, which width is greater than the height, and four corners (11, 12, 13, 14) of which first two opposite corners (11, 13) having angles of over 90 degrees, and second two opposite corners (12, 14) having angles under 90 degrees, said width being 0.1 to 3 mm.