GC1 Folding Box Board
GC1 is a coated folding boxboard category with a white reverse side, used where carton appearance and printing requirements include the interior. We coordinate Chinese factory proposals around your caliper, stiffness, surface finish and converting process. Approve the exact grade through its technical sheet and samples.
Discuss this specificationApplication & grade selection
- Cosmetics and personal-care folding cartons
- Retail product cartons with visible white interiors
- Printed covers, sleeves and other approved carton applications
Technical specification & TDS verification
No generic GC1 performance range is promised. Approve a named factory grade and its measured values.
| Parameter | Buyer requirement / factory evidence | Test / verification method |
|---|---|---|
| Category and reverse surface | GC1 white reverse; coated/uncoated reverse finish, colour and print requirements. | Supplier construction statement, visual sample and agreed optical method. |
| Grammage | Target GSM, permitted tolerance and quantities by grade. | ISO 536 or the agreed method. |
| Thickness / bulk | Target caliper and required carton dimensions; consider thickness with weight. | ISO 534 or the agreed method. |
| Bending resistance | Machine/cross-direction values, units and required tolerance; specify the test geometry. | ISO 2493-1 or another explicitly agreed method; different stiffness methods are not interchangeable. |
| Print surface | Print process, smoothness/gloss targets, coating finish and top/reverse optical targets. | Supplier TDS with stated methods and buyer print trial. |
| Moisture / water absorption | Target moisture; Cobb value and test duration if needed for the application. | ISO 287; ISO 535 within the method's applicability. |
| Creasing and conversion | Grain direction, die-cut/crease design, folding, glueing and carton-line conditions. | Buyer trial with approved cutting and creasing settings. |
Testing & document requirements
Board construction and technical data
Confirm the proposed factory grade, white reverse finish, grammage, caliper and machine- and cross-direction bending values. Compare stiffness using the same test method, units and conditioning stated in the purchase specification.
Print and carton trials
Check a representative sample for the required face and reverse appearance, printing, creasing, folding and gluing. Provide the carton design, grain direction and packed product weight so the trial reflects the intended use.
Documents for the intended use
Include any certified-fibre claim or product-specific document requirement in the enquiry. For direct food contact, provide the destination, contents, contact duration and temperature so the proposed grade's supporting records can be reviewed for that use.
Packing & container planning
- Reel or sheet dimensions
- Machine direction / grain direction
- Reel core, diameter and weight limits
- Sheets per stack and pallet gross weight
- Edge protection and moisture-resistant packing
- Batch identification and loading 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
What does GC1 mean?
GC1 identifies coated folding box board with a white reverse side. The proposed factory grade still requires its own technical data and sample approval.
Is GC1 the same as SBS or GC2?
No. They describe different board categories or constructions. Specify your required construction and reverse-side appearance rather than accepting a code substitution.
Can you provide a branded board equivalent?
We can request Chinese grades for comparison against your existing TDS and application. Any substitution must be based on the relevant properties and a successful buyer trial; no automatic brand equivalence is claimed.
Can GC1 be supplied in sheets or reels?
State your format, dimensions, grain direction, quantity and handling limits. The factory confirms the available format, minimum order and packing arrangement.
Source notes & related buying guides
Method and grade references explain the buying fields; they are not certificates for our suppliers.
- Holmen Iggesund — General technical information about paperboard
- ISO 536:2019 — Paper and board — Determination of grammage
- ISO 534:2011 — Paper and board — Determination of thickness, density and specific volume
- ISO 2493-1:2010 — Paper and board — Determination of bending resistance
- ISO 287:2017 — Paper and board — Determination of moisture content of a lot — Oven-drying method
- ISO 535:2023 — Paper and board — Determination of water absorptiveness — Cobb method
For a quotation, include the finished carton dimensions, packed product weight, sheet or reel requirements and receiving port. We use these details to coordinate the proposed grade, sample review and shipment plan. 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