Industrial Textile Weave Structure for Stable, Even Dewatering
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Solution Overview
Problem
Existing paper machine fabrics, particularly SSB structures, suffer from issues such as increased wear, uneven thickness, high material cost, and instability due to internal wear and binding yarn pairs, leading to reduced stability and uneven water permeability.
Innovation Solution
An industrial textile with a three-machine direction yarn system, including first, second, and third machine direction yarns, where the third yarns interweave both sides to form a stable structure with common interlacing points, reducing the need for binding yarn pairs and enhancing dimensional stability and water permeability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If binding yarn pairs are used to connect paper-side and wear-side layers in SSB structures, then layer connection and stability are improved, but internal wear increases and service life decreases
Solution Approach 1:
The invention extracts and eliminates the binding yarn pairs from the fabric structure. Instead of using separate binding yarns to connect layers, the patent uses a single-layer weave pattern where the warp and weft yarns themselves provide both layer connection and structural stability, thereby removing the source of internal wear
Solution Approach 2:
The invention merges the functions of layer connection and structural support into a single integrated weave pattern. The warp and weft yarns simultaneously provide both the connection between paper-side and wear-side layers and the overall fabric stability, eliminating the need for separate binding yarn pairs
2Reliability
If binding yarn pairs are used to form continuous weft path, then layer binding is achieved, but weft density increases and manufacturing cost increases
Solution Approach 1:
The invention removes the binding yarn pairs from the fabric structure and relies on the inherent interlacing of warp and weft yarns in a single-layer weave to provide layer binding, thereby reducing material requirements and manufacturing complexity
Solution Approach 2:
The warp and weft yarns in the single-layer weave perform multiple functions simultaneously: they provide structural support, create the fabric pattern, and bind the paper-side and wear-side layers together, eliminating the need for specialized binding yarns
3Reliability
If binding yarn pairs are used to connect layers, then layer stability is improved, but fabric thickness increases
Solution Approach 1:
The invention extracts the binding yarn pairs from the fabric structure and achieves layer stability through the interlacing of warp and weft yarns in a single-layer weave, thereby reducing fabric thickness
Solution Approach 2:
The invention merges the layer-binding function into the primary weave structure, where the same warp and weft yarns that form the fabric body also connect the paper-side and wear-side layers, eliminating the need for additional thickness-consuming binding elements
4Length of stationary object
If single warp system is used in double-layer wires, then fabric thinness is achieved, but wear resistance decreases and breaking risk increases
Solution Approach 1:
The invention applies different functional characteristics to different regions of the fabric by optimizing the local weave pattern and yarn arrangement in the single-layer structure, providing enhanced wear resistance at critical areas while maintaining overall fabric thinness
Solution Approach 2:
The invention uses composite yarn structures within the single warp system, combining different fiber materials with complementary properties to achieve both thinness and high wear resistance in the same fabric layer
Data Source
Figure 1a~1d
Figure 1e~1h
Figure 2
AI summary
The present invention relates to an industrial textile (6) for manufacturing a fibrous web. The industrial textile (6) has a front side (7) and a back side (8). The industrial textile (6) comprises first machine direction yarns (1), second machine direction yarns (2), third machine direction yarns (3), first cross-machine direction yarns (4) and second cross-machine direction yarns (5). The first machine direction yarns (1) on the front side (7) of the industrial textile (6) bind to the first cross-machine direction yarns (4) according to a first pattern, the second machine direction yarns (2) on the back side of the industrial textile bind to the second cross-machine direction yarns (5) according to a second pattern, the third machine direction yarns (3) bind to the first cross-machine direction yarns (4) and the second cross-machine direction yarns (5) according to a third pattern. The third pattern comprises at least one interlacing point (71) on the front side (7) of the industrial textile (6) where one of the third machine direction yarns (3) is configured to pass over one of the first cross-machine direction yarns (4) and at least one interlacing point (72) on the back side (8) of the industrial textile (6) where the same third machine direction yarn (3) is configured to pass under one of the second cross-machine direction yarns (5).