Concealable Fastener Manufacturing with Flexible Support Bodies
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Solution Overview
Problem
Concealable slide fasteners made with hard synthetic resin regulating bodies lack flexibility, particularly in the left-right direction, affecting their concealing performance.
Innovation Solution
A manufacturing method involving sewing a stringer member with flexible support bodies and connecting parts to a fastener-attached member, using materials like woven tape members or coil-shaped support members, to enhance flexibility and concealment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If hard synthetic resin regulating bodies are used in concealable slide fasteners, then the structural integrity and restraining function are improved, but the flexibility of the fastener is reduced
Solution Approach 1:
The patent uses composite construction by combining flexible fabric bodies with rigid regulating members. The fabric material provides flexibility while the regulating members (made of hard synthetic resin) provide structural integrity and restraining function. This composite approach resolves the contradiction by integrating both flexible and rigid components in a single fastener system.
Solution Approach 2:
The patent applies local quality by making only specific portions of the fastener rigid (the regulating members at the bent portions) while keeping the rest of the fabric flexible. This allows the fastener to maintain flexibility overall while providing localized rigidity where needed for structural support and restraining function.
2Reliability
If hard synthetic resin regulating bodies are used, then the concealing performance is improved by maintaining abutted state, but the flexibility in left-right direction is reduced
Solution Approach 1:
The regulating members are positioned specifically at the bent portions of the fabric where concealing performance is critical. This localized placement ensures that rigidity is applied only where needed to maintain the abutted state and hide the element rows, while the rest of the fabric retains its flexibility for comfort and movement.
Solution Approach 2:
The patent creates a dynamic balance between rigid regulating members and flexible fabric. The regulating members maintain the concealed state when the fastener is engaged, while the flexible fabric allows the fastener to adapt to body movements and maintain comfort during use.
Data Source
AI summary
The present invention provides a manufacturing method for manufacturing a fastener-attached product by sewing together a stringer member and a fastener-attached member. The manufacturing method includes preparing the stringer member including fastener elements in a coil shape, a support member, and a connecting part that connects an element row and a support body; performing a stringer attaching step in which the stringer member and the fastener-attached member are sewn together while the connecting part of the stringer member overlaps the fastener-attached member; and forming an attachment sewing part and sewing together a portion of the connecting part of the stringer member and the fastener-attached member with the attachment sewing part in the stringer attaching step. Thus, the fastener-attached product with flexibility improved compared to that in the related art can be provided.