Fortress™ Cupstock

With a durable liquid barrier, excellent sealing properties, exceptional material purity, and an ideal printing surface for high-quality graphics, Fortress™ Cupstock is designed to make a great impression from the first look to the last drop. 

Fortress Cupstock provides exceptional liquid holdout and good wicking resistance. It is made from bleached paperboard (also know as solid bleached sulfate or SBS) made from renewable plant-based fiber from sustainably managed forests. 

Fortress™ Cupstock

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Features
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Fortress Cupstock Sustainability Benefits

Sustainability Benefits
Renewable Resource
  • Fortress cupstock is made from plant-based fiber, a renewable resource  
Recycled Content
  • Can also be produced with 12% FDA-compliant recycled content  

Fortress Cupstock Features

Fiber Procurement and Chain of Custody
  • Graphic Packaging International is compliant with Forest Stewardship Council®, Sustainable Forestry Initiative®, and Programme for the Endorsement of Forest Certification™ Chain of Custody forest certification standard
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) 
Compostability
  • Paperboard is manufactured from plant-based fiber from sustainably managed forests. As there is no specific test for paper compostability, it is recommended that ASTM 6400, 6868, or similar test methods are used to verify the compostable nature of paperboard or paperboard packaging. 
Machine Models
Manufacturing
  • Mill is third-party certified to the ISO 9001: Quality Management System standards  

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Fortress Cupstock

Product Information

Applications
Benefits
Specifications
Compliance
A view of a burger, fries, and a to-go cold drink
Applications
  • To-go beverages
  • Quick service restaurants   
Benefits

Excellent printability and glue adherence

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

Consistent performance in a variety of environments and converting rocesses

  • 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 
  • Fortress Cupstock provides exceptional liquid holdout and good wicking resistance
  • 100% web inspection on all cupstock extruders plus a consistent array of TAPPI testing procedures ensures that your board will be clean and reliable

Range of options 

  • Whether your application requires LDPE on only one side for a hot cup or on both sides for additional barrier protection, Fortress Cupstock offers a variety of polyethylene options and specifications to suit your project needs 
  • Available in a wide variety of coat weight combinations, as well as with heat sealing primer for good seam and rim sealing or a treated surface to ensure that your graphics reflect your brand image 
Specifications
Basestock PropertiesUnits11pt12.3pt13.2pt14pt15.3pt16.3pt17pt18pt19pt20pt22pt24ptStandard
CaliperInches0.0110.01230.01320.0140.01530.01630.0170.0180.0190.0200.0220.024T-411
ThicknessMicrons279  312   335  356 389 414 432 457 483 508 559 610 T-411
BrightnessGE828282828282828282828282T-452
Compliance

Food contact compliance

  • FDA and EU compliant for contact with dry foods, as well as aqueous and fatty foods   

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