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Help CenterInduction Sealed Plastic Tamper-Evident Closure, 28-400 Thread, Leak-Proof Design
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We are a professional manufacturer with over 20 years of experience in packaging solutions. Our Induction Sealed Plastic Tamper-Evident Closure with a 28-400 thread and leak-proof design is engineered to provide maximum security and product integrity. Designed for industries that demand the highest level of protection, this closure combines advanced induction sealing technology with a robust tamper-evident band, ensuring that your products remain safe from contamination and unauthorized access. With an annual export value of US$5 million to US$10 million and a global market presence spanning North America, Europe, Asia, and beyond, our factory is a trusted partner for packaging solutions.
This closure is ideal for a wide range of liquid products, including pharmaceuticals, chemicals, food, beverages, and personal care items. The 28-400 thread provides a universal fit for standard bottles, while the induction seal liner creates an airtight barrier that prevents leaks and extends shelf life. The tamper-evident ring breaks upon first opening, providing clear visual evidence of tampering, which builds consumer trust and meets regulatory requirements.
Key Features and Benefits
- Induction Sealing Technology: The aluminum foil liner bonds to the bottle mouth under heat, forming a hermetic seal that prevents leakage, evaporation, and contamination.
- Tamper-Evident Ring: A breakable band around the cap ensures that any attempt to remove the closure is immediately visible, deterring tampering and ensuring product safety.
- Leak-Proof Design: Precision-molded threads and a tight seal guarantee no leakage during transportation, storage, or use, even under pressure.
- 28-400 Thread Standard: Compatible with most bottles using the 28-400 neck finish, allowing easy integration into existing production lines.
- Durable Plastic Material: Made from high-quality PP or PE, this closure is resistant to chemicals, impact, and temperature variations, suitable for demanding applications.
- Customizable Options: Available in a variety of colors and can be printed with your logo or product information to enhance brand identity.
- User-Friendly: Easy to open and reclose, providing convenience for end users while maintaining security.
Technical Specifications
| Thread Size | 28-400 (28 mm neck finish, 400 series thread) |
| Outer Diameter | Approx. 33 mm |
| Height | Approx. 20 mm (customizable) |
| Material | Polypropylene (PP) or Polyethylene (PE) |
| Seal Type | Induction seal with aluminum foil liner |
| Tamper Evidence | Breakable tamper band |
| Color Options | White, black, blue, red, green, or custom |
| Application | Pharmaceutical, chemical, food, beverage, personal care |
Our closures are manufactured under strict quality control procedures to ensure consistency and reliability. The induction seal not only provides a tamper-evident function but also acts as a barrier against oxygen, moisture, and microorganisms, which is critical for extended product shelf life. With over two decades of manufacturing experience, we have refined our production processes to deliver high-quality closures at competitive prices.
Why Choose Our Factory?
- Established in 1998: Over 20 years of expertise in manufacturing packaging components.
- Global Reach: Annual export value of US$5 million to US$10 million, serving markets in North America, South America, Europe, Southeast Asia, Africa, Oceania, the Middle East, and more.
- Flexible Shipping: Conveniently shipped from major ports including Tianjin, Qingdao, Shanghai, and Foshan, ensuring timely delivery.
- Customization: We offer custom colors, logos, and packaging options to meet your specific brand requirements.
- Quality Assurance: Each batch is tested for dimensional accuracy, seal integrity, and tamper-evident functionality.
We invite you to experience the reliability of our induction sealed closures. Whether you need a standard solution or a custom design, our team is ready to support your project. Contact us today for a quote or to discuss your specific requirements. Let us help you protect your products and build trust with your customers.
Frequently Asked Questions
- Q: What materials are used in this closure? A: The closure is made of high-quality polypropylene (PP) or polyethylene (PE), both of which are durable, chemical-resistant, and food-grade safe. The liner is aluminum foil for induction sealing.
- Q: Is this closure suitable for hot-fill applications? A: Yes, the plastic material can withstand temperatures up to 80°C (176°F) for short periods. For higher temperatures, please consult our technical team for custom solutions.
- Q: What is the minimum order quantity (MOQ)? A: Our standard MOQ is 50,000 pieces, but we can accommodate smaller orders for sample or trial purposes. Please contact us for details.
- Q: Can I customize the color and print my logo on the cap? A: Absolutely. We offer a wide range of color options and can print your logo or product information using hot stamping, silk screening, or pad printing. Custom molds are also available for large orders.
- Q: What equipment is needed to apply the induction seal? A: An induction sealing machine (cap sealer) is required to create the hermetic seal. These machines are widely available and can be integrated into your existing filling line. We can provide recommendations if needed.
- Q: Does this closure fit all bottles with 28-400 neck finishes? A: The 28-400 thread is a standard industry size, but slight variations may exist. We recommend sending a sample of your bottle for a fit test to ensure perfect compatibility.
- Q: How do I ensure the tamper-evident band works properly? A: The band is designed to break cleanly upon first opening. To ensure proper function, tighten the cap to the recommended torque during capping. Our quality control team can provide torque specifications.
- Q: What certifications or compliance standards are available? A: Our closures are manufactured in compliance with general industry standards for food contact and pharmaceutical packaging. Specific certifications such as FDA or EU regulations can be provided upon request subject to your market requirements.
For any further questions or to place an order, please reach out to our sales team. We are committed to providing you with the best packaging solutions.
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