Package Board

CKB (Coated Kraft Back)

Coated white print face and unbleached kraft reverse for folding cartons and beverage carriers.

CKB (Coated Kraft Back) supplied by YOUNGSUN PAPER

CKB (Coated Kraft Back) Overview

YOUNGSUN Coated Kraft Back Board (CKB) has a white triple-coated printing face and an unbleached kraft reverse. The reference range is 200–350 gsm, supplied in sheets or reels subject to grade and size. It is considered for printed beverage carriers, dry-goods cartons and retail folding cartons where both the visible print surface and reverse-side appearance matter. For chilled or frozen distribution, confirm the exact board construction, any required barrier or laminate, the filling conditions and finished-carton performance by trial. Food-contact suitability is not established by the CKB name and must be documented for the intended market and contact conditions. Request a physical sample to compare printing, creasing, folding and glue bonding before production.

Specifications

  • Grammage: 200 – 350 gsm
  • Surface: Triple-coated white top with unbleached kraft back
  • Supply forms: Sheets, reels, custom sizes
  • Common weights: 200, 235, 245, 255, 280, 300, 325 and 350 gsm
  • Grade: CKB; confirm the quoted grade's technical sheet

Applications

  • Beverage packaging
  • Dry food cartons
  • Secondary cartons for chilled or frozen goods, subject to pack validation
  • Toy boxes
  • Shoe boxes
  • Tool packaging

Frequently Asked Questions

How is CKB different from folding box board or duplex board?

CKB combines a coated white printing face with an unbleached kraft reverse for strength and a natural kraft appearance. FBB and duplex board use different fibre and back constructions. Compare stiffness, tear performance, reverse-side appearance, printing and the final carton environment before selection.

Is CKB suitable for frozen or chilled food packaging?

CKB can be selected for beverage, chilled and frozen-food cartons when the complete structure matches moisture, temperature, filling and storage conditions. Food-contact and barrier suitability must be confirmed for the exact grade, coating or laminate and destination market.

What should I specify when requesting CKB?

Send grammage, sheet or reel dimensions, quantity per size, carton design, printing and gluing process, storage conditions, any food-contact or barrier requirement and destination port. The reference MOQ starts from 1 metric ton for a regular grade and size, subject to specification confirmation; standard samples are free and the customer pays international courier charges.

Industries Using CKB (Coated Kraft Back)

Explore end-use requirements, recommended grades and buyer checkpoints for each industry.

  • Food & Beverage - Match forming, barrier and food-contact requirements for cups, wraps, bags and takeaway packs.
  • Packaging & Printing - Compare structure, print surface and converting performance for boxes, bags and printed packaging.

Related Buyer Guides

Compare material requirements and prepare a more precise technical inquiry.

Product Features

  • Two-Sided Construction — White coated face for print, natural kraft reverse for visible inside panels.
  • Print and Fold Trial — Approve ink, crease, fold and glue results on the selected grade.
  • Application-Specific Protection — Check humidity, temperature and any barrier layer in the finished carton.
  • Grade Selection — Compare grammage, stiffness and converting yield using the same carton design.

Available Variants

  • Coated Kraft Back Board

Commercial Information

  • Moq: From 1 metric ton for a regular grade and size; confirm the exact specification
  • Lead Time: Approximately 3 weeks after order specifications are confirmed
  • Samples: Standard samples are free; international courier charges are paid by the customer
  • Certification: FSC claim confirmed on the applicable order documents

Request a Quote

Send your required GSM or thickness, sheet or reel size, quantity, application and destination port for a product recommendation and export quotation.

Request CKB (Coated Kraft Back) pricing · Request samples

Review quality control and documentation · See the ordering process

View related Package Board products

Choose CKB by print face, reverse and carton conditions

The white coated face and kraft reverse are visible material features; cold-chain and food-contact performance must be confirmed for the finished specification.

Print on the white face

Approve the exact grade with your inks, varnish and artwork. Compare color, rub and drying after the planned finishing process.

Compare FBB for printed cartons

Convert the kraft-backed sheet

Trial crease direction, folding, glue bond and carton rigidity on the intended equipment. Specify whether the reverse remains visible.

Compare duplex board

Match the destination environment

For chilled or frozen distribution, define humidity, temperature, food-contact route and any barrier layer. Request documents and a finished-pack test for the exact grade.

Request a CKB sample