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Receiving body for the insertion pin on an open-end zipper; channel accuracy controls fit and retention.
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Receiving body for the insertion pin on an open-end zipper; channel accuracy controls fit and retention.
Ability of engaged teeth to resist separation under load; depends on profile, depth and pitch accuracy.
Bonding a TPU or PU film to tape for waterproofing and abrasion protection; bond strength is tested.
British zipper standard covering dimensions, strength, cycle life and corrosion resistance.
Moving component that engages or separates the teeth; channel and locking design control pull feel and reliability.
Polyoxymethylene engineering plastic used for resin teeth and stops; stiff, low friction and dimensionally stable.
Polyester from recycled PET used for tape and thread; lowers carbon footprint and needs GRS traceability.
Extruded nylon filament coiled into zipper teeth; diameter and tensile strength determine coil quality.
Applying a functional layer to tape or teeth for water repellency and abrasion resistance; weight must be controlled.
Width of one tooth across the chain; linked to gauge and critical for smooth slider guidance.
Assembling body, pawl, spring and puller into a working slider; tension and height control locking reliability.
Stiffened rod on an open-end zipper that enters the box; thickness and length set insertion feel and retention.
Overall width of a closed zipper across both tapes; reference for pattern making and seam allowance.
Fixing teeth onto the tape edge at controlled pitch; spacing and clamping depth control smoothness and strength.
Injecting molten zinc alloy into a steel mould to form slider bodies; controls porosity and dimensional accuracy.
Part joining both tapes at the lower end of a closed-end zipper; resists slider impact and lateral opening.
Chinese standard for zipper technical requirements, test methods and inspection rules.
Corrosion-resistant steel for springs, pawls and specialty hardware; durable and rust resistant.
Size number based on nominal closed chain width; larger gauge means bigger teeth and higher strength.
Bonding thermoplastics with heat and pressure to create watertight joints; used for stops and waterproof seams.
Elastic element that returns the locking pawl; consistent spring force prevents self-opening and excess drag.
Screening with magnetic or X-ray detectors for broken needles and metal fragments before packing.
Zipper with coated or laminated tape and sealed slider that limits water penetration; tested by hydrostatic pressure.
Force needed to pull one tooth off the tape; measures how firmly teeth are anchored.
Chinese standard defining zipper terminology, classification and size designation.
Visible mismatch against the approved colour standard or between parts; judged by grey scale or instrument.
Accelerated corrosion test using salt mist; rates plated parts by white and red rust appearance.
Allowed thickness variation between tooth and tape areas; controls seam flatness and sewing stability.
Nickel migrating from metal parts in skin contact; restricted in the EU and tested on sliders and pullers.
Attaching a zipper to a product; stitch type, tension and seam allowance affect appearance and strength.
Chinese standard describing zipper test procedures for strength, cycle life and colour fastness.
Zipper that separates completely at the lower end using a pin and box; used on jackets and coats.
Missing or detached teeth that leave a gap in the chain; caused by shallow setting or weak material.
Pre-shrinking and shrinkage matching that prevent waves and puckers along a sewn zipper.
Closed zipper opening by itself under load; caused by weak spring or shallow tooth engagement.
Local raised area near a zipper caused by stacked teeth, stops or seam allowance; affects appearance and comfort.