Kraftliner Board
Kraftliner for corrugated packaging starts with the liner and finished-box performance your application needs. We coordinate Chinese factory proposals using your furnish requirement, strength targets, reel dimensions and corrugator conditions. Compare a named grade's technical sheet and sample before confirming the order specification.
Discuss this specificationApplication & grade selection
- Corrugated cartons for industrial and export goods
- E-commerce shipping cartons after structural testing
- Liner grades for a specified corrugator and box performance target
Technical specification & TDS verification
Kraftliner, recycled testliner and fluting are not interchangeable labels. Confirm the proposed furnish/construction and grade-specific performance.
| Parameter | Buyer requirement / factory evidence | Test / verification method |
|---|---|---|
| Furnish / grade | Required fibre construction, virgin/recycled content claim where relevant, colour and surface finish. | Supplier furnish statement, grade description and supporting documentation. |
| Grammage | Target GSM and acceptable tolerance. | ISO 536 or the agreed method. |
| Compression strength | SCT machine/cross-direction minimums and units where relevant; specify if a different strength metric is required. | ISO 9895 or the agreed applicable method. SCT, RCT and finished-board ECT are different tests. |
| Bursting strength | Minimum burst value or index where part of the specification. | ISO 2759 where applicable to the material and strength range, or another agreed method. |
| Water absorptiveness | Cobb target, test duration and top/reverse sides tested. | ISO 535 within its stated applicability. |
| Moisture / caliper | Moisture and thickness targets needed for stable corrugator operation. | ISO 287 and ISO 534 or agreed methods. |
| Reel and corrugator fit | Width, core, maximum diameter/weight, winding, splice criteria and flute/liner combination. | Dimensional checks and buyer corrugator/finished-box trials. |
Testing & document requirements
Furnish and grade identification
Request the factory grade description and technical sheet, including the stated fibre construction, colour and surface. Record any virgin or recycled fibre requirement and the documents needed to support that claim.
Strength and moisture data
Compare the strength values specified for your application using the same test method, direction and units. Record the conditioning basis, target moisture and Cobb exposure time. SCT, RCT, burst and finished-board ECT describe different tests and should be identified separately in the buying brief.
Corrugator and finished-box trials
Provide the intended flute and liner combination, box design, packed weight and distribution conditions. Agree representative trials and acceptance criteria for corrugator operation and finished packaging, together with sampling and any independent inspection required for the order.
Order documents and traceability
Confirm reel labels, batch information, the packing list and any fibre-certification records requested by the buyer. Match the documents and inspection scope to the proposed factory grade and agreed shipment.
Packing & container planning
- Corrugator-compatible reel width
- Core/diameter and maximum reel weight
- Reel end protection and moisture-resistant wrapping
- Splice limits and grade/batch marking
- Lifting/handling arrangement
- Package geometry, net/gross weights and secured container plan
| Planning field | Information to confirm |
|---|---|
| Shipment format | Reels, sheets or converted blanks; quantity by grade and net metric tonnes. |
| Reel handling | Width, maximum diameter, core inside diameter, maximum reel weight, winding direction and splice limits. |
| Sheet handling | Sheet dimensions, grain direction, sheets per stack, pallet dimensions, maximum stack height and pallet gross weight. |
| Protection and traceability | Moisture-resistant wrap, edge protection, end protection, pallet/packing specification, grade and batch labels. |
| Container plan | 20GP/40HQ option, actual package dimensions and gross weights, securing plan, equipment payload and destination handling/road limits; final net tonnes confirmed against the packing list. |
| Commercial basis | Named origin/destination, Incoterm, currency, quote validity, payment terms, required documents and target shipment window. |
Net cargo quantity is an order-specific result of dimensions, packing, actual weight and the relevant equipment and transport limits.
Download the container planning worksheet →Sample & approval workflow
- Submit the application, specification and any reference TDS.
- Review the proposed factory grade and document scope.
- Approve a representative sample against the agreed acceptance criteria.
- Confirm the quotation, inspection scope, packing and shipment terms in writing.
Buying questions
Is kraftliner the same as testliner?
The terms identify different liner categories and furnish descriptions. Ask for the proposed grade's construction and TDS rather than assuming identical material or performance.
Which strength number should be compared?
Use the test required by your purchase specification and compare on the same method, direction, unit and conditioning basis. SCT, RCT, burst and finished-board ECT should not be treated as equivalent values.
Can you recommend liner for e-commerce export cartons?
Send the box design, packed weight, distribution conditions and target tests. Candidate liner grades must be assessed with your flute/liner combination and finished-box trials.
How many tonnes fit in a 20GP or 40HQ?
It depends on actual reel dimensions, packing, gross weight, equipment payload and destination limits. We confirm a load plan for the quoted order rather than publishing one fixed tonnage.
Source notes & related buying guides
Method and grade references explain the buying fields; they are not certificates for our suppliers.
- ISO 536:2019 — Paper and board — Determination of grammage
- ISO 9895:2008 — Paper and board — Compressive strength — Short-span test
- ISO 2759:2014 — Board — Determination of bursting strength
- ISO 535:2023 — Paper and board — Determination of water absorptiveness — Cobb method
- ISO 287:2017 — Paper and board — Determination of moisture content of a lot — Oven-drying method
- ISO 534:2011 — Paper and board — Determination of thickness, density and specific volume
- IMO/ILO/UNECE — Code of Practice for Packing of Cargo Transport Units
Share the receiving port, required reel widths and quantities, packed product weight and expected handling or humidity conditions. These details inform the factory comparison, sampling plan and shipment quotation. Regional sourcing guides are available below.
Send your buying requirements
Include your application, required quantity and delivery timing. We will review the specification and follow up by email.
Request a quotation