Spiral Air-Tight Zipper for Waterproof Bags | YGZIP® Leak-Proof Zipper Solutions
Spiral airtight zippers are high-sealing zippers widely used in waterproof and airtight clothing and equipment.
Additional information
| Slider | |
|---|---|
| Feature | |
| Size | S40, S60, S80 |
| Color | Black, Customized pantone color, White |
| Material | |
| Application |
The manufacturing process of the product
Production Process of Spiral Airtight Zipper
- Raw Material Preparation：
- Select high-strength nylon 6 or nylon 66 yarn for abrasion resistance and tensile strength.
- Prepare TPU (thermoplastic polyurethane) or rubber-based waterproof coatings for airtight sealing.
- Auxiliary materials: Metal/plastic sliders, top/bottom stops, and polyester tape substrate.
- Nylon Braiding Process：
- Braid nylon yarn into continuous zipper teeth strips using high-speed braiding machines, controlling tooth spacing and density.
- Stabilize the shape through high-temperature heat pressing to prevent deformation.
- Coating and Sealing Treatment：
- Apply TPU or rubber coating evenly on the braided nylon tape to fill gaps between teeth.
- Cure the coating via UV or hot-air drying to form a seamless airtight layer.
- For premium products, add sealing strips at the tooth base for enhanced airtightness.
- Tape and Slider Assembly：
- Stitch the coated nylon braided teeth to polyester substrate tape for strength and flexibility.
- Assemble sliders with precision machinery to ensure smooth operation.
- Attach waterproof metal/plastic top/bottom stops to secure the slider.
- Airtightness Testing & Quality Control：
- Airtight Test: Mount the zipper on a test mold, inject compressed air (e.g., 0.5-1.0 bar), and measure leakage rate (≤0.1%).
- Tensile Test: Verify teeth strength (≥80N/tooth) under simulated usage conditions.
- Durability Test: Perform 5,000+ open/close cycles to ensure coating integrity and slider smoothness.
- Packaging & Environmental Compliance：
- Use moisture-proof vacuum packaging to protect coatings from humidity.
Technical Advantages：
-
- Lightweight Design: 30%-50% lighter than metal zippers.
- Full Sealing: IP67-rated airtightness (dust/waterproof).
- Customization: Color, length, and tensile strength tailored to client needs.
Applications：
-
- Outdoor Gear: Inflatable tents, wetsuits, hiking backpacks.
- Medical Devices: Sterile protective suits, isolation chambers.
- Industrial Protection: Chemical-resistant suits, airtight packaging.
Product Details:
Spiral Air-Tight Zipper for Waterproof Bags
Benefits of Spiral Air-Tight Zippers for Outdoor Use
Leak-Proof Zipper Technology for Waterproof Bags
Custom Spiral Air-Tight Zippers from YGZIP®
Spiral airtight zippers are high-sealing zippers widely used in waterproof and airtight clothing and equipment.
The core structure of nylon-woven airtight zippers includes:
- Teeth: Made of high-strength nylon (e.g., PA6 or PA66) through a woven process, forming a continuous spiral or dual-spiral structure for flexibility and tear resistance.
- Coating: Teeth are coated with polyurethane (PU) or thermoplastic polyurethane (TPU) to enhance airtightness.
- Slider: Designed with fully or semi-enclosed structures; high-end models may include built-in sealing strips.
- Tape: Nylon fabric is bonded to teeth via high-temperature pressing, with edges sealed by ultrasonic welding or adhesive.
Classified by function and structure:
- Standard Airtight Zippers: For general sealing (e.g., tents, inflatable products).
- High-Pressure Airtight Zippers: Designed for environments with pressure differentials (e.g., aerospace, diving gear).
- Customized Zippers: Tailored for specific widths, lengths, or colors (e.g., medical suits, industrial equipment).
Airtightness Testing & Quality Control
- Airtight Test: Mount the zipper on a test mold, inject compressed air (e.g., 0.5-1.0 bar), and measure leakage rate (≤0.1%).
- Tensile Test: Verify teeth strength (≥80N/tooth) under simulated usage conditions.
- Durability Test: Perform 5,000+ open/close cycles to ensure coating integrity and slider smoothness.
Application:
- Outdoor Gear: Inflatable tents, wetsuits, hiking backpacks.
- Medical Protection: Airtight isolation suits, sterile packaging.
- Industrial Equipment: Gas pipeline seals, dust covers.
- Aerospace: Spacesuits, cabin pressure systems.
Airtight Zippers vs. Waterproof Zippers
| Feature | Airtight Zippers | Waterproof Zippers |
|---|---|---|
| Core Function | Block gas (air, dust) | Block liquid (water, oil) |
| Material | Nylon + PU/TPU + sealed slider | Polyester/PVC + waterproof tape |
| Test Standard | ASTM D737 | IPX7/IPX8 |
| Application | High-pressure, sterile spaces | Raincoats, water sports |
| Cost | Higher (precision coating) | Moderate |
Pros & Cons:
- Airtight: Superior in high-pressure environments but less flexible.
- Waterproof: Cost-effective and lightweight but fails in gas blocking.
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What are common zippers used for?
Common zippers are widely used in clothing, bags, and general-purpose textile products due to their reliability and cost-effectiveness.
Does YGZIP offer size customization for common zippers?
Yes, we provide customizable sizes, materials, and colors to meet your production needs.
What makes a zipper high-end?
High-end zippers use refined materials, smooth operation, and elegant finishes suited for premium fashion designs.
Can I customize the zipper pull for fashion zippers?
Absolutely. YGZIP offers customized pullers with logos, colors, and finishes tailored to your brand.
What are air-tight zippers used for?
Air-tight zippers are used in products requiring sealed enclosures such as diving suits, inflatable tents, and protective gear.
Do air-tight zippers resist water as well?
Yes, air-tight zippers from YGZIP are designed to resist both air and water leakage.
Where are explosion-proof zippers used?
They are commonly used in protective clothing, mining gear, and environments with high safety requirements.
Are these zippers certified?
Yes, YGZIP provides explosion-proof zippers that comply with relevant industrial safety standards.
What is a flame-retardant zipper?
It’s a zipper treated or constructed with materials that resist ignition and slow flame spread, used in fire-protective clothing.
Does YGZIP offer certifications for these zippers?
Yes, all our flame-retardant zippers are tested and meet NFPA, EN, or UL standards.
What is the difference between water-repellent and waterproof zippers?
Water-repellent zippers resist moisture but are not completely watertight, while waterproof zippers provide a full seal.
What applications are these zippers suitable for?
Ideal for rainwear, backpacks, and any product needing light moisture protection.
Can I request custom lengths or colors?
Yes, we offer full customization upon request.
Do you work with fashion designers?
Yes, we collaborate with many international design houses.
What are flame-retardant zippers made of?
Specialized aramid or fire-resistant tapes with heat-treated coatings.
Are flame-retardant zippers customizable?
Yes, we offer various sizes, teeth types, and tape colors.
Can I add a logo on the zipper?
Yes, we provide branding options for sliders and pullers.
What materials are used in YGZIP's metal zippers?
YGZIP metal zippers are crafted from high-quality brass, aluminum, or nickel, ensuring durability and corrosion resistance.
Are these metal zippers suitable for heavy-duty use?
Absolutely. YGZIP metal zippers are designed for high strength and are ideal for jeans, leather bags, jackets, and other demanding applications.
