Faux Dobby Terry Fabric Zone Shrinkage Control

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Solution Overview

Problem

Woven terry towels with traditional dobby zones face issues of differential shrinkage leading to puckering and increased production time due to higher weave density, making them less efficient and aesthetically flawed compared to towels without dobby sections.

Innovation Solution

Incorporating a faux dobby zone with a pile height visibly distinct from adjacent terry zones, woven at the same density as the rest of the fabric, to create a visually appealing and efficient terry fabric that mimics the appearance of dobby zones without the drawbacks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Shape

If standard dobby zones with higher weave density (33-60 picks/cm) are used, then the aesthetic quality and luxurious appearance are improved, but differential shrinkage occurs leading to puckering after bleaching and washing

Engineering Contradiction:
Improveaesthetic appearanceVSAvoiddimensional stability
Core Design Contradiction:
ShapeVSReliability

Solution Approach 1:

The invention applies local quality by creating a faux dobby zone with visually distinct pile height (lower than adjacent terry zones) while maintaining the same weave density (10-20 picks/cm) as the body fabric. This localized variation in pile appearance provides the aesthetic dobby effect without the high density that causes shrinkage differential and puckering.

Inventive Principle:
Principle #3Local quality

2Shape

If standard dobby zones with higher weave density are used, then the luxurious appearance is achieved, but the production time increases significantly

Engineering Contradiction:
Improveaesthetic appearanceVSAvoidweaving speed
Core Design Contradiction:
ShapeVSProductivity

Solution Approach 1:

The faux dobby zone uses the same weave density as the body fabric (10-20 picks/cm), allowing the entire towel to be woven at uniform speed without the significant slowdown required for traditional high-density dobby zones (33-60 picks/cm), thus maintaining high productivity while achieving the desired aesthetic.

Inventive Principle:
Principle #3Local quality

3Productivity

If faux dobby zone with lower pile height is used, then the aesthetic appearance and production efficiency are improved, but the visual distinction from traditional dobby must be accepted

Engineering Contradiction:
Improveweaving efficiencyVSAvoidvisual authenticity
Core Design Contradiction:
ProductivityVSShape

Solution Approach 1:

The invention creates a copy of the dobby aesthetic effect using pile height variation rather than high weave density. The faux dobby zone replicates the visual appearance of traditional dobby through lower pile height (visibly distinct from adjacent zones) while being woven at the same density as the body, providing an efficient alternative that achieves the desired look without the traditional drawbacks.

Inventive Principle:
Principle #26Copying

Data Source

PatentUS11408100B2Terry fabric with faux dobby and methods of making terry fabric with faux dobby
Publication Date: 2022.08.09 STANDARD TEXTILE COMPANY
  • US11408100B2 patent drawing
  • US11408100B2 patent drawing
  • US11408100B2 patent drawing

AI summary

Described is a woven terry fabric article that includes a body having a first end and a second end opposite one another, and a first side edge and a second side edge opposite one another and generally perpendicular to the first and second opposite ends. The article further includes a first terry zone having a pile with a first pile height, a second terry zone having a pile with a second pile height, and a first faux dobby zone intermediate to the first and second terry zones. The first faux dobby zone has a pile with one or more pile heights that are visibly distinct from the pile heights of the first and second terry zones. In embodiments, the one or more pile heights in the faux dobby zone are less than the pile height of the adjacent zones, such as 50% less, 40% less, or 35% less.