01Kehong · Guide
Material sourcing & converting handoff
After choosing a material, define whether you need rolls, sheets or die-cut blanks, then hand over dimensions, orientation, quantities and the next operation.
From sourcing to the next operation
Three delivery forms, three handoff checklists
Choose the delivery form before recording dimensions. These are communication fields, not a standard Kehong supply specification. Mark undecided details as “Need recommendation”; the reference images do not define an order.
W is usable web width, D is roll outer diameter and d is core inner diameter. Supply dimensions and units, then confirm faces, winding and equipment unwind direction separately. The image is not a supply specification.
L and W are sheet length and width in mm. Identify display/print face, reverse face, flute direction and converting feed direction separately; do not assume they align. The image is not a supply specification.
Open the delivery form you need. Each checklist keeps its own dimensions and quantity units.
Roll stock: describe the roll, not a sheet
For a buyer who will slit, sheet, print or convert the web downstream. Confirm that the selected material is available in roll form before choosing it.
- Material reference, construction and grammage if known; identify the face that will be printed or displayed.
- Usable web width; core inner diameter; maximum roll outer diameter or roll mass your equipment accepts. State units and required tolerances for review.
- Winding orientation and which face is inside/outside; describe unwind direction with a sketch or photo of your feed arrangement.
- Quantity in kg or tonnes, or number of rolls with an agreed mass/length basis; record the unit rather than treating each roll as equal.
- Next operation, intended use, storage and packing needs; ask how joins and roll identification will be recorded.
Sheets: label both dimensions and the face
For stock that will be printed, laminated, die-cut or used as a flat sheet. A sheet size is not the internal size of the future box.
- Material reference, flute profile and layer construction separately; define which face is visible and which face receives artwork.
- Sheet length × width in mm, marked on a drawing; identify flute direction on corrugated stock and grain/feed direction where relevant.
- Number of sheets per material/size; agree any area or weight basis separately. Do not mix sheets and finished sets in one quantity.
- Required flatness, edge condition and dimension tolerances for discussion; explain stacking, wrapping and handling needs.
- Next process and the drawing/artwork version; show where folds, print registration and visible edges matter.
Die-cut blanks: pair the drawing with delivery state
For cut and creased parts supplied flat. Decide who folds, glues or assembles them and what is included with the parts.
- Approved dieline revision, flat outline and assembled dimensions; distinguish internal fit from external shipping dimensions.
- Cut, crease, perforation and opening locations; indicate flute/grain direction, display face and artwork orientation.
- Each component's name and quantity in pieces; if ordered as sets, write the component count per set as a separate definition.
- Flat, pre-glued or assembled delivery; record whether scrap stripping, auxiliary parts and assembly instructions are included.
- Product/contact points and removal needs; use a structural sample to review fit before the drawing is released.
A copyable converting brief
Delivery form: ___; material reference / layers: ___; display / print face: ___; dimension object and units: ___; flute / feed direction: ___; quantity and unit per item: ___; next operation: ___; drawing / artwork version: ___; packing and storage conditions: ___.
Browse materialsChoose a converting stageBring your known details to an inquiry
Terminology reference: FEFCO —corrugated production and converting. Explains converting stages; it does not establish that Kehong owns every machine or process mentioned in the source.
Start with what the finished pack must do: locate the product, fold and close reliably, carry the artwork and suit the intended handling. Paper names help organise the discussion, but the selected material must be reviewed in the finished structure.
Paperboard or corrugated board? Start with the packed product
Paperboard offers a relatively compact sheet for folded cartons, sleeves and locating parts. Corrugated board combines a fluted medium with liner material, so the board construction becomes part of the structural design. Compare the product's shape and mass, required fit, assembly, storage and distribution conditions before choosing between them.
For a cake box, review the board, opening and decoration clearance together. For a mailer, include the insert and parcel-handling arrangement. A material that looks suitable as a sheet may behave differently after cutting, creasing, printing and assembly.
Flute profile and layer construction answer different questions
E, F and G identify flute-profile families. They do not, on their own, specify the complete board thickness, paper combination or tested performance. Use the supplier's actual construction and sample when comparing profiles; do not substitute a generic flute-height table for the project specification.
Two-layer and three-layer descriptions concern how the papers are combined. A single-face construction has a fluted medium and one liner; adding a second liner makes a single-wall construction. These layer descriptions are separate from the flute profile. Also distinguish 'two layers' from 'double-wall', which uses two fluted mediums. Put a cross-section or explicit layer description on the specification when terminology could be ambiguous.
Choose the visible surface with the artwork and process
White, kraft, coloured, metallic, pearlescent and textured surfaces give different visual starting points. Review contrast, fine text, colour matching and the position of folds on the selected surface. Texture and reflective appearance should be judged using a physical reference under the intended viewing conditions.
Printing, lamination, coatings, embossing, cutting and creasing can interact. Review the proposed sequence and the assembled result, including fold edges, adhesion and any exposed inner surface. An attractive finish is not, by itself, evidence of barrier performance, recyclability or food-contact suitability.
Describe food contact as a use condition
Identify what food is packed, which surfaces touch it, whether contact is direct or through another layer, and the expected time, temperature, grease, moisture and storage conditions. Include the destination market and any relevant use restrictions when reviewing supporting documents.
A statement about one raw material cannot automatically cover inks, adhesives, windows or the complete converted pack. Similarly, a non-fluorescent description does not establish compliance for all food uses. Assess the material documentation against the exact finished combination and intended application.
Use sampling to close the gap between a sheet and a pack
First agree the dimensions, component arrangement, material construction and opening method. Use a structural sample to check fit, folds, locks and removal. Then review artwork and colour on the intended surface, noting which features a print proof can and cannot demonstrate.
Finally assemble a representative loaded pack, including boards, pads, inserts or dividers, and review the intended handling and storage sequence. Record the approved drawing, material layers, artwork version and sample changes. Agree any additional verification needed for the distribution route; do not infer a load rating or service condition from a paper name.
- Corrugated paper and board materials
- Specialty and decorative surfaces
- Custom cake boxes
- Printed pizza boxes
- Corrugated mailer boxes
- Proofing and sample review
Use the receiving checklist to record the condition of delivered materials and packaging.
03 · Related products & project support