Defender-Lok™ CRC Product Line Introduced by Closure Systems International

Closure Systems International (CSI), a global leader in closure design and manufacturing, has introduced Defender-Lok™, its new child-resistant closure (CRC) platform tailored for over-the-counter (OTC) and nutraceutical applications. The solution combines certified safety, operational efficiency, and sustainability in a high-performance, drop-in design.

Built for Efficiency and Compliance
Defender-Lok™ integrates seamlessly into existing capping and filling lines, reducing downtime, feeder jams, and sealing failures. This ensures streamlined validation, reliable throughput, and compliance with child-resistance and senior-friendly standards—helping manufacturers safeguard both product integrity and consumer trust.

Key Features

• Certified CRC Design – Child-resistant and senior-friendly, meeting regulatory standards
• Drop-In Compatibility – Fits seamlessly into existing OTC/nutraceutical lines
• Sustainable Engineering – Up to 33% lighter than standard CRCs; compatible with CSI’s PolyCycle™ PCR resin
• Tamper-Evident & Liner Agnostic – Works with foam, tri-foil, induction seal, pressure-sensitive, and custom liners
• High-Speed Performance – Maintains line speeds, reduces errors, and improves yield
• Flexible Formats – Offered in 33mm, 38mm, 45mm, and 53mm sizes for dry or liquid products

Sustainability by Design
With Extended Producer Responsibility (EPR) regulations and mandates such as California’s SB-54, sustainability is a critical consideration. Defender-Lok™ is engineered to minimize resin use, reduce shipping weight, and lower environmental impact. Certain SKUs already surpass 2027 SB-54 targets, and all closures can be manufactured using CSI’s PolyCycle™ PCR resin, which is fully recyclable and made from post-consumer content.

Source: csiclosures.com