Flexible Abrasive Loop Structure for Durable Hook Attachment
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Solution Overview
Problem
Existing flexible abrasive products face issues with unreliable attachment to grinding machines due to loop wear, limited force transmission, and susceptibility to laying down during storage or use, particularly when having an open structure for dust removal.
Innovation Solution
A flexible abrasive product with interconnected loops formed by pairs of bottom-half arcs connected by a protruding head, arranged in rows extending in the wale direction of the cloth, which are interlaced and interconnected outside the cloth to enhance stability and availability for hook-and-loop fastening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If loops are provided as integral parts of base fabric to enable hook-and-loop fastening, then attachment means are readily integrated, but loops wear out and break before abrasive lifetime ends
Solution Approach 1:
The loop structure is segmented into multiple interconnected loops arranged in rows, where each loop is connected to adjacent loops. This segmentation allows the attachment function to be distributed across multiple independent loop units, so that wear or breakage of individual loops does not compromise the entire attachment system.
Solution Approach 2:
Multiple loops are merged into interconnected rows where protruding heads of adjacent loops are interconnected. This merging creates a network of loops that share mechanical loads, distributing the stress and force transmission across the entire row rather than concentrating it on single loops, thereby enhancing durability.
2Object-generated harmful factors
If abrasive product has open structure to improve dust removal, then dust removal is enhanced, but not enough loops are available for establishing connection to machine
Solution Approach 1:
The abrasive product exhibits local quality differentiation: the bulk structure maintains an open, porous configuration for effective dust removal, while specific localized regions contain concentrated rows of interconnected loops. This local concentration of loops in predetermined rows ensures sufficient attachment points are available even when the overall structure is open and porous.
Solution Approach 2:
The loop structure is organized into predetermined rows extending in the wale direction, creating a dimensional arrangement where loops are concentrated in specific linear zones. This row-based organization ensures that attachment points are systematically distributed across the surface, providing adequate connection points without requiring a densely filled overall structure.
3Ease of manufacture
If loops are arranged in traditional configuration, then manufacturing is simple, but loops lay down when product is rolled-up or stacked, making them unavailable for connection
Solution Approach 1:
The loops are preliminarily configured with protruding heads that extend beyond the cloth surface and are interconnected in predetermined rows. This preliminary configuration, established during manufacturing, pre-positions the loops in an upright, connection-ready state that resists laying down during subsequent handling, rolling, or stacking operations.
Solution Approach 2:
The interconnected loop structure creates a mechanically stable configuration where loops in a row are at equivalent structural levels. The interconnection through protruding heads establishes a balanced, equipotential arrangement that distributes mechanical stresses uniformly, preventing individual loops from collapsing or laying down during storage and handling.
4Ease of manufacture
If fewer loops are available for attachment, then manufacturing is easier, but fewer hooks must support higher forces
Solution Approach 1:
Multiple loops are merged into interconnected rows where the protruding heads of adjacent loops are connected to one another. This merging creates a load-sharing network where mechanical forces are distributed across multiple loops and their interconnections, allowing the attachment structure to support higher forces without requiring an excessive number of individual loops.
Data Source
Figure 1A~1C
Figure 1D~6
Figure 2A~2B
AI summary
Provided is a flexible abrasive product (1) comprising a knitted cloth (2) on a first side of the flexible abrasive product (1), grinding agents (50) applied on a second side of the flexible abrasive product (1) facing the first side, and a plurality of loops (71) protruding from the cloth (2) and from the first side, each loop (71) being formed by a pair of bottom-half arcs (76) connected by a protruding head (77) and the loops (71) being arranged in rows extending in the wale direction (W) of the cloth (2), wherein the bottom-half arcs (76) are interlaced in the cloth (2), and the protruding heads (77) of the loops (71) are interconnected with one another outside of the cloth (2) so as to form rows (73) of interconnected loops (71), which rows (73) extend in the wale direction (W) of the cloth (2).