Beauty and Personal Care, Healthcare Packaging, Media and Electronics, Home & Garden Packaging

Natralock® Protect

Natralock RTR

Added strength for additional pilferage protection.

Natralock Protect is a patented paperboard that delivers exceptional tear resistance to deter theft. Designed for secure folding carton blister pack applications, it provides a rigid yet smooth surface for outstanding ink holdout and high-quality graphic reproduction. Plus, Natralock Protect delivers many converting efficiencies. Put this strong tamper protection to work for you.

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Features & Benefits

What you can expect from us:


Combines paperboard attributes with the tear-resistance of our proprietary lamination for unsurpassed performance in security carton packaging.


A smooth surface, outstanding ink holdout and best-in-class printability deliver high-quality graphics for security carton applications.


A polymer coat-weight uniformity offers improved efficiencies and maximum throughput on high-speed filling equipment.


Consistency from roll-to-roll and sheet-to-sheet make NatraLock Protect ideal for high-speed converting and filling while eliminating the need for extra steps.


Best used with:

  • Security Carton Applications
  • Healthcare
  • Beauty and Personal Care
  • Media and Electronics
  • Home Improvement

Paperboard Calculator

We understand that you rely on us for more than paperboard. In order to provide the best service possible, WestRock has developed roll, sheet and metric conversion calculators to make your job easier.

View the paperboard calculator

Additional Product Information


  • 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 regulationand Safety are not required.
  • Elemental chlorine free (ECF) bleached fiber.
  • Meets heavy metal limits of the US Model Toxics in Packaging rules andArticle 11 of EU Directive 94/62/EC.

This information is subject to change without notice.


  • Produced at an ISO 9001 certified facility.

Stop theft, not sales.

Research shows consumers are much less likely to make a purchase when they can’t easily accessthe product. To help you improve the shopping experience, we offer our Security Carton, made of Natralock® paperboard designed with a proprietary tear-resistant technology. This helps you maximize retail security without the burdensome addition of plastic clamshells, wrapping materials or locked cases.

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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.

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