Appealing. Safe. Functional. Sustainable.Now there is a secure, tear-resistant, more sustainable alternative to traditional blister seal and clamshell applications. WestRock NatraLock® Resist+ features stellar graphic reproduction as well as protection from tampering while allowing heat and RF sealing on a wide range of thermoform blister materials. Uniformity and consistency from roll-to-roll and sheet-to-sheet make NatraLock Resist+ ideal for high-speed converting, filling, and sealing applications. It’s perfect for promotional messages, graphics, and compliance information for trade seal blister packaging. With SBS and CNK offerings, NatraLock Resist+ is uniquely engineered to be used as a clamshell replacement that both deters theft and enhances sustainability. Download product guide PDF
Features and Benefits
What you can expect from us:
The rigidity of paperboard and the tear-resistance of lamination combines for unsurpassed assembly performance of trap seal blister packaging
Heat Seal Compatibility
Consistently seals to a wide variety of thermoformed blister materials, including APET, RPET, PETG, RPETG, PVC, and PLA.
Low Temperature Seal
Low-temperature sealing yields increased line speed, minimized risk of product damage and reduced ink degradation. With a dwell time 20% less than other hot-seal coatings, you’ll see improved results and lower costs.
A smooth surface, outstanding ink holdout and best-in-class consistency combine for optimal printability. Polymer coat-weight uniformity provides improved efficiencies and maximum throughput on high-speed filling equipment.
Direct printing eliminates the need to apply heat-seal coating, improving converting efficiency and reducing inventory costs.
Roll-to-roll and sheet-to-sheet consistency makes NatraLock SBS ideal for high-speed converting, filling and sealing applications.
Tear strength remains constant after a cut has been initiated.
Recycled Fiber Content
CNK is produced with up to 15% recycled fiber, providing an option for meeting your corporate sustainability goals.
Best used with:
- Beauty and Personal Care
- Media and Electronics
- Sporting Goods
- Home Improvement
Additional Product Information
- Made with recycled fiber (CNK version.)
- All WestRock North American paperboard mills are certified to the SFI®, PEFC™, FSC™ Chain of Custody Standards.
- Contact your WestRock sales representative for certified fiber availability for this product.
Environmental & Product Safety
- Notices under US California Proposition 65 and the EU REACH regulation are not required.
- Elemental chlorine free (ECF) bleached fiber (SBS version).
- Meets heavy metal limits of the US Model Toxics in Packaging rules and Article 11 of EU Directive 94/62/EC.
This information is subject to change without notice.
- Produced at an ISO 9001 certified facility.