Woven Fabric Tape Structure for Planar Upper Layer Support
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Solution Overview
Problem
Existing woven tapes for fibrous web production exhibit planarity issues in the upper tissue layer, leading to undesirable hydraulic markings and insufficient connection stability between layers.
Innovation Solution
A woven tape design with a repeat pattern of at least six longitudinal thread groups, featuring binding threads that form multiple ties with upper longitudinal threads, continuing a plain weave in pairs, to enhance support and stability while minimizing layer depression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If single ties are used in the repeat pattern, then the manufacturing process is simpler, but the upper tissue layer exhibits planarity issues and forms depressions
Solution Approach 1:
The patent changes the binding pattern parameter from single ties to multiple ties (specifically 2-binding and 3-binding segments). This parameter change in the binding thread configuration redistributes the downward pull on upper longitudinal threads, preventing excessive depression formation while maintaining manufacturing feasibility through systematic repeat patterns of six longitudinal thread groups.
2Shape
If multiple ties are used in the repeat pattern, then the planarity of the upper tissue layer is improved, but the binding thread configuration becomes more complex
Solution Approach 1:
The patent segments the repeat pattern into six distinct longitudinal thread groups, each containing a specific arrangement of upper and lower longitudinal threads with binding threads forming standardized 2-binding and 3-binding segments. This segmentation creates a modular, systematic structure that reduces complexity compared to arbitrary multiple tie configurations, making the pattern easier to manufacture while maintaining planarity improvement.
3Volume of stationary object
If fewer longitudinal thread groups are used in the repeat, then the fabric tape is thinner, but the fiber support and connection stability are insufficient
Solution Approach 1:
The patent optimizes the repeat pattern to include exactly six longitudinal thread groups with specific thread counts (three upper and four lower longitudinal threads per group). This parameter configuration achieves the optimal balance: sufficient fiber support and connection stability through multiple binding points, while controlling fabric tape thickness by avoiding excessive thread groups that would increase overall dimensions.
Data Source
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AI summary
The invention relates to a woven tape comprising an upper woven layer with upper longitudinal threads and upper transverse threads (OQF) interwoven with them, and a lower woven layer with lower longitudinal threads and lower transverse threads (UQF) interwoven with them, wherein the upper woven layer is connected to the lower woven layer by binding threads (B1, B2) running in the transverse direction of the woven tape, wherein the weave pattern of the woven tape is repeated in repeats (R), wherein the repeat (R) with respect to the upper longitudinal threads and the lower longitudinal threads is formed from several longitudinal thread upper groups, wherein each longitudinal thread upper group consists of two first groups and a second group, wherein each first group is formed from an upper longitudinal thread and a lower longitudinal thread arranged below it, and each second group is formed from an upper longitudinal thread and two lower longitudinal threads arranged below it, wherein each binding thread (B1,B2) in the repeat (R) forms at least once a multiple binding with the upper transverse threads in the repeat (R), wherein the repeat (R) consists of at least six longitudinal thread upper groups with respect to the upper longitudinal threads and the lower longitudinal threads.