Siro-Spun Pile Yarn Structure for Towel Uprightness and Absorbency
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Solution Overview
Problem
Existing towel cloths face challenges in maintaining the uprightness of pile, achieving a soft and bulky texture, and ensuring good water absorbency.
Innovation Solution
A towel cloth using a siro spun yarn as the warp pile yarn, with secondary twisting applied in an opposite direction to the primary twisting direction of the rovings, resulting in a nontwisted or low twisted spun yarn with a twist multiplier K of 0 to 3.0.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a thick yarn with high fineness is used to increase basis weight for good water absorbency, then water absorbency is improved, but the uprightness of pile and soft bulky texture deteriorate
Solution Approach 1:
The patent applies parameter changes by controlling the twist multiplier K to be 0 to 3.0, which is a specific numerical range that optimizes the yarn structure. This parameter control allows the yarn to maintain low twist while achieving the desired pile characteristics, resolving the contradiction between water absorbency and pile quality
Solution Approach 2:
The patent uses siro spun yarn which applies twisting in the opposite direction to conventional ring-spun yarns. This inversion of the twisting approach creates a yarn structure where fibers are arranged to provide both good water absorbency and excellent pile uprightness simultaneously, rather than having to choose between these properties
2Ease of manufacture
If conventional ring-spun yarn is used for pile yarn, then manufacturing is straightforward, but the soft and bulky texture and uprightness of pile are insufficient
Solution Approach 1:
The patent changes the fundamental parameter of yarn spinning method from conventional ring-spinning to siro-spun system. This parameter change enables the production of yarn with twist multiplier K of 0 to 3.0, which creates the desired soft and bulky texture while maintaining manufacturing feasibility through established siro-spun equipment
3Shape
If high twist yarn is used to improve pile uprightness, then uprightness is improved, but water absorbency and soft texture deteriorate
Solution Approach 1:
The patent inverts the conventional approach by using low twist or nontwisted siro spun yarn instead of high twist yarn. The unique siro spun structure with opposite direction twisting creates fiber entanglement that provides pile uprightness without requiring high twist, thereby maintaining water absorbency and soft texture
Solution Approach 2:
The patent creates a composite yarn structure through siro spun system that combines multiple rovings with opposite direction twisting. This composite structure achieves multiple functions simultaneously: pile uprightness through fiber entanglement, water absorbency through loose fiber arrangement, and soft texture through low twist configuration
Data Source
AI summary
There are provided a towel cloth having a favorable uprightness of a pile, having a soft and bulky texture, and having a water absorbency in combination, and a manufacturing method thereof. The towel cloth is configured such that a warp pile yarn is engaged in a warp ground yarn and a weft ground yarn. The warp pile yarn is a siro spun yarn 19, and is a nontwisted or low twisted spun yarn applied with secondary twisting in the opposite direction to the primary twisting direction of a plurality of rovings 12a and 12b, namely, the untwisting direction. The twisting habit of primary twisting and migration of primary twisting cause entanglement between fibers. In addition, each fiber is a nontwisted yarn or a low twisted yarn, and hence each constituent fiber is present in a free state. This results in a pile yarn with a favorable uprightness and a soft and bulky texture.