Magnetic Wing Fastening Assembly for Foam Mold Positioning
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Solution Overview
Problem
Conventional hook-and-loop fasteners tend to shift during the foaming process when applied to foam articles due to the expanding foam material, leading to defects, and existing solutions like magnetic attachment are insufficient in maintaining secure positioning.
Innovation Solution
A fastening assembly with a first band having hooks, a second band forming protruding wings with a magnetic layer, and a third band for support, ensuring secure magnetic attachment to a mold and protection from foam expansion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a magnetic layer is provided only on the base of the hook-and-loop fastener, then the fastener is attracted to the mold by magnetic force, but the magnetic force is insufficient and the fastener is still likely to be shifted away from the predetermined location
Solution Approach 1:
The magnetic layer is extended from a single-plane base into a three-dimensional wing structure that protrudes beyond the longitudinal edges of the first band. This spatial extension increases the magnetic interaction area with the mold, providing stronger and more distributed magnetic force to reliably hold the fastener at the predetermined location during foam expansion.
Solution Approach 2:
The fastening assembly combines multiple materials with different functions: the first band provides the hook structure for fastening, the second band with magnetic layer provides magnetic attraction and positioning, and the third band provides additional structural support. This composite structure integrates magnetic positioning with mechanical fastening functions.
2Manufacturing precision
If the hook-and-loop fastener is securely positioned in the mold, then the foam material can expand properly, but the hooks may be damaged by contact with expanding foam material
Solution Approach 1:
The second band forms wings that protrude beyond the longitudinal edges of the first band, creating a protective spatial barrier. These wings extend into the foam expansion zone, shielding the vulnerable hooks on the first band from direct contact with the expanding foam material while still allowing proper foam formation.
Solution Approach 2:
The wing structure is designed in advance to provide protective coverage over the hooks before the foam expansion process begins. This pre-positioned protective structure prevents harmful contact between the foam material and the hooks during the molding process.
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 fastening assembly is securely positioned and protected from foam damage during the molding process, preventing displacement and hook damage, while allowing easy removal after molding.
Implementation Method 1
The magnetic layer is located on at least one of the third surface and the fourth surface of the wings of the second band and comprises a magnetic material for providing magnetic attraction to a magnet of a mold
Data Source
AI summary
A fastening assembly and a cushion having the same are provided. The fastening assembly includes a first band, a second band, a third band, and a magnetic layer. The first band has a first surface protrudingly provided with plural hooks, and a second surface. The second band has a third surface and a fourth surface, with the third surface bonded to the second surface of the first band. The second band is wider than the first band and forms a pair of wings protruding beyond longitudinal edges of the first band, respectively. The third band, narrower than the second band, has a fifth surface and a sixth surface, with the fifth surface bonded to a central portion of the fourth surface of the second band. The magnetic layer is located on the third surface or the fourth surface of the wings of the second band and comprises a magnetic material.