Natralock® SBS

Appealing. Safe. Functional. Sustainable.

Now there is a secure, tear-resistant, more sustainable alternative to traditional blister seal and clamshell applications. Natralock® SBS 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 SBS ideal for high-speed converting, filling and sealing applications. It’s perfect for promotional messages, graphics and compliance information for trade seal blister packaging and 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:

Laminated Structure

The rigidity of paperboard and the tear-resistance of lamination for unsurpassed assembly performance of trap seal blister packaging. Consistently seals to a wide variety of thermoformed blister materials, including APET, RPET, PETG, RPETG, PVC and PLA.

Heat Seal Compatibility

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.

Product Uniformity

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.

Converting Efficiency

Direct printing eliminates the need to apply heat-seal coating, improving converting efficiency and reducing inventory costs.


Best used with:

  • Healthcare
  • Beauty and Personal Care
  • Media and Electronics
  • Toys
  • Sporting Goods
  • Automotive
  • Home Improvement
  • Tools

A clear choice for better security

To help boost security and remove barriers to purchase, we offer Natralock® tear-resistant packaging. As durable and secure as clamshells, Natralock provides superior product visibility and a safer, easier opening experience to help drive sales and profits.

Download one-pager.

Get started.

How can we help you meet your business goals? Contact a member of our team to learn more about our paperboard products and services.

Get more information