Bulk Zipper Metal Fastening Stop Factory
A zipper metal fastening stop is a small, precision‑formed component that limits the travel of the slider, preventing the teeth from disengaging. In bulk production, stops are stamped or formed from coil stock to tight dimensional tolerances, ensuring consistent performance across millions of cycles. The design balances low insertion force with sufficient retention force to maintain zipper integrity under repeated opening and closing.
Technical Specifications
| Parameter | Typical Value | Notes |
|---|---|---|
| Material | Stainless Steel 304, Brass C36000, Zinc Alloy Zamak 3 | Selected per corrosion and cost requirements |
| Thickness | 0.6 mm – 1.2 mm | Customizable in 0.1 mm increments |
| Width (overall) | 4.0 mm – 6.5 mm | Matches standard zipper tape width |
| Length (stop leg) | 2.0 mm – 5.0 mm | Determines slider travel limit |
| Tensile Strength | ≥ 450 MPa (SS 304) | Ensures resistance to pull‑out |
| Corrosion Resistance | ASTM B117 salt spray ≥ 500 h (no red rust) | Applicable to stainless steel grades |
| Dimensional Tolerance | ± 0.05 mm (critical dimensions) | Achieved via progressive die stamping |
| Surface Finish | Bright, matte, or passivated | Selected per aesthetic and friction needs |
Material Options and Selection Logic
Stainless steel 304 offers a balance of strength and corrosion resistance suitable for outdoor apparel and marine gear. Brass provides excellent electrical conductivity and a low‑friction surface, often chosen for decorative zippers where appearance matters. Zinc alloy Zamak 3 enables high‑speed stamping with lower tooling cost, making it economical for high‑volume consumer goods. Selection is based on environmental exposure, required cycle life, and cost targets; each material undergoes a baseline salt‑spray test to verify suitability.
Primary Applications
In heavy‑duty workwear, stops prevent slider runaway under load, reducing the risk of accidental opening during physical activity. For luggage and backpacks, the stop’s tensile strength maintains closure integrity when the bag is subjected to dynamic shocks. In automotive interior trim, corrosion‑resistant stops ensure long‑term function despite exposure to temperature fluctuations and cleaning agents. Each application demands a specific combination of material, thickness, and length to meet industry‑specific performance standards.
Customization Capabilities
- Length adjustment in 0.1 mm steps to match custom slider travel limits
- Width scaling to accommodate non‑standard zipper tapes (e.g., waterproof coated tapes)
- Optional secondary operations: deburring, tumbling, or laser marking for traceability
- Custom packaging: bulk reels of 5 000 pcs, tray packs of 500 pcs, or anti‑static bags for electronics
Quality Control Philosophy
Quality assurance begins with incoming coil inspection, verifying thickness, hardness, and surface finish via micrometer and Rockwell testing. In‑process monitoring uses vision systems to detect missing or deformed stops at rates exceeding 1 ppm. Final inspection includes functional testing: a simulated zipper cycle of 2 000 repetitions at 60 in/min, measuring retention force and checking for tooth disengagement. All test data are retained for traceability and can be supplied upon request.
Packaging and Logistics
Stops are packed in static‑dissipative polypropylene reels to prevent contamination and facilitate automated feeding. Each reel is labeled with material grade, lot number, and quantity. For overseas shipments, cartons are lined with moisture‑barrier film and secured with pallet straps, meeting ISPM‑15 standards for wood packaging. Lead time typically ranges from 3 to 4 weeks for tool‑ready orders, depending on material availability and order volume.
Frequently Asked Questions
- Can dimensions be customized? Yes, length, width, and thickness are adjustable per drawing or sample.
- What information is required for a quotation? Material preference, target dimensions, annual volume, and any special finish or packaging needs.
- How is quality inspected? Incoming material check, in‑process vision inspection, and final functional cycle testing.
- What packaging methods are available? Bulk reels, tray packs, anti‑static bags, and custom palletized cartons.
- What is the typical production lead time? 3‑4 weeks after tool approval and material receipt.
Contact for Inquiry
To discuss technical requirements, request a quote, or obtain samples, please reach out via the contact form. Our engineering team will review your specifications and provide a detailed feasibility assessment within one business day.
Request Quote or Technical Support