Double-Pin Seaming Element for Better Tensile Load Distribution
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Solution Overview
Problem
Existing seaming elements for industrial textiles lack a distinct and separate unit for various types of textiles, particularly woven and non-woven, single-layered or multilayered, which affects the distribution of tensile load and security across seams.
Innovation Solution
A seaming element constructed from a single layer of polymeric film, folded to create a U-shape with aligned protrusions and loops, divided into outer and inner securing regions by ribs or constriction zones, allowing for interdigitatable channels to secure pintles and distribute tensile load effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional seaming elements are used, then the structure is simple, but the tensile load distribution across the seam is insufficient
Solution Approach 1:
The seaming element is divided into multiple protrusions (at least two) with respective channels, creating segmented securing regions. This segmentation allows the tensile load to be distributed across multiple channels rather than concentrated in a single channel, thereby improving strength while maintaining a relatively simple overall structure.
Solution Approach 2:
The invention transitions from a single-channel seaming element to a multi-channel structure by adding protrusions that extend in a direction transverse to the longitudinal axis. This dimensional change enables multiple securing regions to be arranged side-by-side, improving load distribution without significantly increasing complexity.
2Ease of manufacture
If a single layer of film is used, then the manufacturing is simpler, but creating multiple channels is difficult
Solution Approach 1:
A single layer of film is segmented into multiple protrusions, each containing a channel. This segmentation is achieved through cutting or forming operations on the single film layer, creating multiple functional channels without requiring multiple film layers, thus maintaining ease of manufacture while achieving complex channel geometry.
Solution Approach 2:
The channels are formed within the thickness of the single film layer by creating protrusions that extend from one surface. The channels are essentially nested within the film structure itself, allowing multiple channels to be created in a single layer through strategic placement of protrusions and corresponding channels.
3Adaptability or versatility
If the seaming element is made distinct and separate, then it can be attached to various types of textiles, but the attachment security is reduced
Solution Approach 1:
The seaming element is designed as a distinct, separate unit with a universal structure that can be attached to various types of textiles (woven, non-woven, single-layered, multilayered). The standardized protrusion and channel geometry provides adaptability across different textile types while maintaining secure attachment through consistent bonding interfaces.
Solution Approach 2:
The separate seaming element is divided into multiple protrusions with channels, creating multiple bonding interfaces with the textile. This segmentation increases the total bonding area and provides multiple attachment points, thereby enhancing attachment security despite the element being distinct and separate from the textile.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides improved tensile load distribution and secure attachment to industrial textiles, minimizing discontinuity and unevenness, and can be bonded using laser welding or adhesive methods depending on the polymer type.
Implementation Method 1
a seaming element constructed from a single layer of polymeric film folded to create a U-shape
Implementation Method 2
can be bonded using laser welding or adhesive methods depending on the polymer type
Implementation Method 3
can be bonded using laser welding or adhesive methods depending on the polymer type
Data Source
AI summary
A seaming element for an industrial textile, and methods of manufacture. The seaming element body is constructed from a single layer of polymeric film that is folded to provide a fold region and arms that comprise a first region, and a further second region. The first region is bonded to surfaces of an edge region of the textile, while the second region comprises a plurality of spaced-apart aligned protrusions extending from the first region, each protrusion comprising an interior space defined by an upper layer; a lower layer; and a loop at the fold region that connects the upper and lower layers. The interior space is divided into an outer securing region and an inner securing region by either a rib member placed between and bonded to an inner surface of at least one of the upper and lower layer, or by bonding a portion of the upper layer with a portion of the lower layer at a constriction zone. The outer securing region is interdigitatable and alignable with the inner securing region of a corresponding second seaming element bonded to another region of the textile, to define a first channel; and the inner securing region is interdigitatable and alignable with the outer securing region of the corresponding second seaming element, to define a second channel. A securing element is placed in the two channels.