Precision Manufacturing

Manufacturing Process

From zinc-alloy slider casting to thread-based chain formation, explore how we engineer strength, smoothness, and reliability—step by step.

Built for strength, designed to glide.

We manufacture two critical zipper components: the slider and the chain. Sliders start as molten zinc-alloy cast into precision molds, then are refined and assembled. Chains begin as high-tenacity threads woven on looms, formed into coils, and stitched to tapes.

  • Sliders: zinc-alloy die casting → finishing → assembly
  • Chains: loom weaving → coiling → stitching to tape
  • Validation: tensile, element pull-off, slider fatigue

Cycle-at-a-glance

  1. Die casting & barrel finishing
  2. Assembly & lubrication
  3. Loom weaving & coiling
  4. Stitching to tape
  5. QA tests & packing

Zipper Anatomy

Key components you’ll see referenced throughout production and QA.

Anatomy of a Zipper
  • Tape
    Woven textile ribbons that carry the elements; dyed to color specs.
  • Elements / Teeth
    Coil (nylon), molded plastic, or metal elements that interlock.
  • Slider
    Guides elements together/apart; auto-lock or non-lock variants.
  • Stops & Box/Pin
    Hardware that defines ends and separation on open-end zippers.

Zipper Types

  • Coil Zipper
    Lightweight and flexible, perfect for clothing, sportswear, and accessories.
  • Invisible Zipper
    Concealed zipper ideal for dresses, skirts, and formal wear, providing a clean and seamless finish.

Each zipper undergoes stringent quality checks including tensile testing and slider fatigue tests to ensure smooth operation and long-lasting performance.

Common Gauges

#3Light garments, kidswear #5Jackets, bags #8Heavy outerwear #10Luggage, tents
Gauge (number) roughly correlates to tooth size and load capacity.

Quality Verification

  • Chain Tensile Strength
    Pull to break threshold validation (ASTM D2061).
  • Element Pull-off / Slippage
    Ensures teeth do not detach under load.
  • Slider Reciprocation
    Open/close cycles for smoothness & wear.

Standards & Docs

Defines zipper strength and component tests like tensile, element pull-off, slider fatigue.
Lab-backed Batch traceable SOP driven