Folding Carton Substrate Grade Chart

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There are many different substrates you can use to create folding carton packaging. Each substrate has its own characteristics and attributes that make it unique. It is useful to understand the common folding carton material options available when making your decision. Based on the specific needs for your project, there may be a substrate that matches your needs better than other options. For instance, if you were looking to make your packaging more environmentally friendly, Coated Recycled Board (CRB) may be a good option as it is made from 100% recycled fiber. Pax Solutions created the chart below which lists the different substrates and their individual characteristics. Contact us today to get help with your next folding carton project.

Folding Carton Substrate Grade Chart

Substrate Grades Solid Bleach Sulphate (SBS) Coated Unbleached Kraft (CUK) Coated Recycled Board (CRB) Uncoated Kraft Boxboard (UKB)
Fiber Virgin bleached hardwood, coated 1 or 2 sides 90% unbleached virgin pine, 10% hardwood fiber, coated 1 side 100% recycled fiber, bleached top, several plies, coated 1 side ~85% virgin pine, 15% hardwood kraft fiber, uncoated
Appearance Clean, solid white Kraft back, white clay coating Grey back, white clay coating Natural solid kraft
Print Quality Smooth surface, high printability Smooth surface, high printability Acceptable surface, good for flexo and offset Less smooth, reasonable printing by flexo and offset
Density 1X 1X 1.03X 0.73X
Strength Moderate strength Highest strength Acceptable strength Moderate strength
Sustainability Renewable resource, coated fiber Renewable resource,~17% recycled content, certified fiber Renewable resource, 100% recycled content Renewable resource, reduced weight, certified fiber