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Help Center28mm HDPE Plastic Tamper-Evident Closure With Inner Seal for Bottles, Standard Compliant
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Anping County Boli Hardware Wiremesh Products Factory, a trusted manufacturer since 1998, proudly presents our 28mm HDPE Plastic Tamper-Evident Closure with Inner Seal for Bottles. Designed for maximum product integrity, this closure combines a robust tamper-evident band with a built-in inner seal to ensure your bottles remain untouched until opened. With an annual export value exceeding US$5 Million and shipments to over 15 major markets worldwide, our closures are engineered to meet the highest standards of safety and reliability. Whether you're packaging beverages, pharmaceuticals, or industrial liquids, this closure offers a cost-effective, compliant solution that protects your brand and satisfies global regulatory requirements.
Crafted from high-density polyethylene (HDPE), the closure delivers exceptional chemical resistance, durability, and lightweight performance. The 28mm neck finish (28-400) fits standard bottle mouths, and the integrated inner seal provides an additional barrier against leakage and contamination. The tamper-evident ring breaks away upon first opening, giving consumers clear visual proof of package integrity. Below is a detailed overview of the key specifications:
| Parameter | Details |
|---|---|
| Material | HDPE (Food-Grade, FDA Compliant upon Request) |
| Neck Finish | 28-400 (Standard 28mm) |
| Closure Height | Approx. 18–20 mm (depending on exact design) |
| Weight | ~2.5–3.0 grams per piece |
| Inner Seal | Integrated Liner (PE foam or induction seal optional) |
| Tamper Evidence | Break-away band with 12–16 bridge points |
| Operating Temperature | -20°C to 60°C (storage and use) |
| Color Options | Standard White, Black, or custom Pantone |
Key Features & Benefits:
- Tamper-Evident Design: The break-away band visibly indicates if the bottle has been opened, enhancing consumer trust and product safety.
- Integrated Inner Seal: Provides an extra layer of protection against oxygen, moisture, and leakage, extending shelf life for sensitive liquids.
- Material Excellence: HDPE is lightweight yet strong, resistant to common chemicals, and fully recyclable (check local facilities).
- Standard Compliance: Meets international standards for food contact materials (e.g., EU Regulation 10/2011, US FDA 21 CFR). Additional certifications available upon request.
- Versatile Application: Compatible with water, juice, oil, cleaning agents, and pharmaceutical syrups. Suitable for both hot-fill and cold-fill processes.
- Customizable Branding: We offer embossed logos, screen printing, and color matching to help your product stand out on shelves.
- Consistent Quality: Manufactured in a controlled environment with rigorous in-process inspection, ensuring dimensional accuracy and reliable performance.
The closure is designed for easy capping on standard automatic capping machines, with a recommended torque range of 15–25 in-lbs. The inner seal can be either a foam liner for basic barrier or an induction foil seal for high-integrity applications. Our engineering team can assist in optimizing the closure for your specific bottle neck and filling line requirements.
Trust & Reliability: With over 25 years of manufacturing experience and annual export sales exceeding US$5 Million, Anping County Boli Hardware Wiremesh Products Factory has supplied tamper-evident closures to clients across North America, Europe, Southeast Asia, Africa, Oceania, and the Middle East. Our products are shipped from major Chinese ports including Tianjin, Qingdao, Shanghai, and Foshan with efficient logistics. We are committed to delivering consistent quality, competitive pricing, and responsive customer service. Contact us today for a sample or quotation — let us secure your bottles with professionalism and reliability.
Frequently Asked Questions (FAQ)
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Q: Is this closure suitable for carbonated beverages?
A: Yes, the HDPE closure with inner seal can withstand moderate pressure. However, for high-carbonation applications, we recommend upgrading to a thicker liner or a specialized venting design. Please discuss your specific requirements with our sales team. -
Q: Does the inner seal come pre-attached?
A: The inner seal is integrated into the closure during manufacturing. It is a one-piece design, ensuring no extra assembly steps are needed on your filling line. -
Q: Can I get a sample before placing a bulk order?
A: Absolutely. We offer free samples for standard closures (you pay shipping). Custom samples are available for a nominal fee, which is refundable upon order placement. -
Q: What is the minimum order quantity (MOQ)?
A: For standard colors and finishes, the MOQ is typically 50,000 pieces. For custom colors or printing, the MOQ may be higher. Contact us for exact MOQ based on your specifications. -
Q: Are these closures recyclable?
A: HDPE is widely recyclable (Resin ID code 2). However, please check local recycling guidelines as some facilities may require the tamper-evident band to be removed. -
Q: Can the closure be used for hot-fill processes?
A: Yes, HDPE can tolerate temperatures up to 60°C (140°F) continuously. For hot-fill at higher temperatures (e.g., 85°C), we recommend using a PP or PET closure. Our team can advise on the best material for your process. -
Q: How is the tamper evidence ensured?
A: The break-away band is attached to the skirt via thin bridges. When the cap is unscrewed, these bridges snap, leaving the band separated from the cap. This provides a clear visual indication that the bottle has been opened. -
Q: Do you provide certificates of compliance?
A: Yes, we can issue a Certificate of Analysis (COA) and a Declaration of Compliance with relevant food contact regulations upon request. Additional third-party testing can be arranged at cost.
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