Reinforced Hook Fastening Tape Rib Offset
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Solution Overview
Problem
The manufacturing of fastening tape with micro-hooks made from rigid polymers like PVC is challenging due to hook cracking or delamination when the tape is peeled from a forming die, leading to reduced usability and application limitations.
Innovation Solution
Incorporating a rib structure laterally adjacent to the hooks, with a center offset towards the leading edge, which strengthens and stabilizes the hooks during the forming process by counteracting the peeling force, thereby minimizing deformation and cracking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If hooks are made with height up to 0.50 mm (micro-hooks) in rigid polymer fastening tape, then fastening capability is improved, but hooks become cracked or delaminated from base during peeling from forming die
Solution Approach 1:
The rib structure is pre-formed integrally with the hook base before the peeling process occurs. This preliminary structural reinforcement is built into the fastening tape during manufacturing, providing support to the micro-hooks before they are subjected to peeling forces that would otherwise cause cracking or delamination.
Solution Approach 2:
The base of the fastening tape is segmented into distinct structural elements: the base itself, the micro-hooks projecting from it, and ribs laterally adjacent to the hooks. This segmentation allows each component to perform its specific function - the base provides support, the hooks provide fastening, and the ribs provide lateral reinforcement to prevent hook damage.
2Stability of the object's composition
If ribs are positioned laterally adjacent to hooks with center offset towards leading edge, then hook stability during forming is improved, but manufacturing complexity increases
Solution Approach 1:
The ribs and hooks are merged into a single integral structure formed from the rigid polymer material. Rather than being separate components that require assembly, the ribs and hooks are formed together in one manufacturing process, reducing overall device complexity while providing the necessary structural support during forming.
Solution Approach 2:
The rib structure is strategically positioned only where needed - laterally adjacent to the hooks with the center offset towards the leading edge. This localized reinforcement provides maximum stability during the critical forming and peeling phases without adding unnecessary structural complexity to the entire fastening tape.
Data Source
AI summary
A fastening tape includes a base, at least one hook, and at least one rib. The at least one hook includes a stem and an engagement portion extending from an upper end of the stem in a longitudinal direction. The stem includes a leading edge and a trailing edge in the longitudinal direction, and a center of the at least one hook is between the leading edge and the trailing edge. The at least one rib is laterally adjacent to the at least one hook, and a center of the at least one rib is offset from the center of the at least one hook in the longitudinal direction towards the leading edge of the stem.