Fortress™ Cupstock

Hold n Go™


Fortress™ Cupstock is designed to make a great impression from the first look to the last drop. The durable liquid barrier, impeccable sealing properties, exceptional material purity and stunning attractiveness combine to lift your cups beyond the limits of a simple container to the level of the brand builder.

Fortress™ Cupstock

Fortress™ Cupstock Specifications

Excellent Sheet Formation and Printability

Fortress™ Cupstock provides an excellent sheet surface for consistent press performance. The superior printing surface of Fortress™ Cupstock will ensure that your cup truly is your brand’s billboard.

Superior Sizing Technology

Fortress™ Cupstock provides exceptional liquid holdout and good wicking resistance to protect your customers and their brand.

Wide Range of Poly Options

Whether your application requires LDPE on only one side for a hot drinking cup or on both sides for additional barrier protection, Fortress™ Cupstock has a poly configuration that is right for you. Available in a variety of coat weight combinations, as well as with a heat sealing primer for good seam and rim sealing or a treated surface to ensure that your graphics reflect your brand image.

Excellent Sheet Cleanliness

100% web inspection on all cupstock extruders plus a consistent array of TAPPI testing procedures ensures that your board will be clean and reliable. Your presses will run cleanly and efficiently and cups will be clean and sanitary. All Fortress™ materials are FDA and EU compliant for food contact.

Consistent Sheet Performance

With North America’s largest cupstock machine producing only Fortress™ Cupstock, you can depend on consistent board from run to run to ensure efficient operation in your converting facility.

Clean Blue-White Shade

With a clean blue-white shade, your cups will look clean and crisp in any application.


Our cupstock is made from a renewable resource and is available with 12% FDA compliant recycled content. Our FSC®, PEFC and SFI® certifications allow us to provide certified options upon request.

Fiber Procurement and Chain of Custody

All SBS products from Graphic Packaging International carry third-party certification.

Environmental and Safety
  • Complies with California’s Safe Drinking Water and Toxic Enforcement Act of 1986 (California Proposition 65).
  • Complies with European Union Regulation (EC) No 1907/2006 concerning the Registration, Evaluation, Authorisation and
  • Restriction of Chemicals (REACH).
  • Contains no REACH Substances of Very High Concern (SVHC) at levels above the 0.1% threshold.
  • Bleaching: Elemental Chlorine Free (ECF) bleached fiber.
  • Complies with CONEG/Toxics in Packaging laws and with Article 11 of the EU Packaging and Packaging Waste Directive (94/62/EC).

Food Contact Compliance (USA)
  • 21 CFR 176.170 (components of paper and paperboard in contact with aqueous and fatty foods).
  • 21 CFR 176.180 (components of paper and paperboard in contact with dry foods).

Food Contact Compliance (EU)
  • Article 3 of Regulation (EC) No 1935/2004 on materials and articles intended to come into contact with food.
  • Commission Regulation (EU) No 10/2011 on plastic materials and articles intended to come into contact with food, as applicable.
  • Manufactured in accordance with Commission Regulation (EC) No 2023/06 on good manufacturing practice for materials and articles intended to come into contact with food

  • Mills are third-party certified to the ISO 9001: Quality Management System standards.