FP06 · Use & compliance
CKB / Coated Kraft Back Board
Coated white-face, kraft-back board for food and consumer cartons requiring print quality and structural strength.Ranges describe documented grades, not every intermediate weight or stock availability. Caliper depends on grammage and grade; confirm the selected TDS, physical sample and order specification.
Product overview
What is CKB / Coated Kraft Back Board?
CKB combines a coated white printing face with an unbleached kraft reverse. Its layered fibre structure and hard sizing support demanding carton applications; select the exact grade for the required stiffness and converting performance.
Compared with a white-back coated board, CKB gives buyers a visibly different kraft reverse and a strong fibre structure. For food and beverage projects, the purchasing decision should consider grammage, caliper, stiffness, wet / cold-storage exposure, printing and converting route together rather than choosing by GSM alone.
Material direction
Define the contact condition first.
Confirm food type, contact time, temperature, barrier and the full coating or laminate construction.Material highlights
- Triple-coated white top supports high-quality graphics, branding and retail presentation.
- Unbleached kraft reverse provides a natural kraft appearance and strong structural backing.
- Hard sizing supports beverage, frozen-food and cold-storage carton applications.
- High stiffness, folding endurance and compression performance suit demanding carton structures.
- Wide 200–350 gsm documented series allows selection by box size, product weight and converting requirement.
Typical applications
- Food and consumer packaging cartons
Practical questions
Before you specify.
What is CKB board?
CKB is coated kraft back board: a coated white printing face combined with a strong kraft reverse.
What GSM is documented?
The TDS covers 200, 235, 245, 255, 280, 300, 325 and 350 gsm.
Why is CKB used for frozen or cold-storage cartons?
The grade uses hard sizing and a high-stiffness structure intended for demanding cold-storage and food-packaging applications.
Is CKB the same as FBB?
No. Both are folding-carton boards, but CKB is defined by its coated white top and natural kraft reverse; grade structure and end-use selection differ.
Can YOUNGSUN provide sheets and reels?
Sheet, reel and custom-size supply can be discussed according to grade and order requirements.
Technical reference
Download the available English TDS.
Use the current grade-specific document for technical review, then confirm the approved sample and order specification.Continue comparing
