“Rigid box” is not one structure

The word travels further than the box

English RFQs say rigid box or rigid paper box. Chinese notes say 硬盒 or 礼盒. Spanish notes say caja rígida or caja de lujo. All three can mean a lid that lifts off, a wrapped box that folds flat for the container, a book-style case, or a heavier MDF core. The word does not choose.

Wenzhou Taishan Printing manufactures those families in Longgang. A quote starts when the family is named. Portfolio photos are references for a family, not a stock item called “the rigid box”.

Land the word on a family

Collapsible gift boxes on this site are grey-board wraps, typically 1.5–3 mm in the catalog, that fold for freight and set up on arrival. They are rigid board. They are not an SBS carton.

Lid-and-base is a separate lid and base. It does not fold flat. Fit — snug or loose — is its own article. Book-style hinges on a spine and often takes a magnet. Drawers and double doors are another family.

MDF in the catalog runs about 1.5–7 mm. It is not a thicker way of saying grey board. A dieline drawn for one core does not transfer to the other without a new sample.

• Collapsible grey-board wrap.
• Lid-and-base.
• Book-style, drawer, or double-door.
• MDF core, and which of those structures it uses.

“Set-up box” and “folding rigid” are still not the lid

Some buyers say set-up box for a lid-and-base that arrives assembled, and folding rigid or collapsible rigid for the wrap that ships flat. Use those phrases if you have them. If you do not, describe what the box does: lid lifts off, or the empty box folds flat.

Freight follows that choice. The structure article and the freight-cube article on this site compare cube and shelf. This page does not repeat that comparison. It only stops a single adjective from hiding the choice.

Spanish and Chinese nicknames still need millimetres

Caja rígida, estuche rígido, and 天地盖 are closer to a family than the single word rigid, and they are still not a size. The Spanish-market article on this site asks for millimetres instead of a luxury nickname. The same rule applies in English and Chinese.

Inner or outer, written next to the millimetres, matters more than which language the email uses. The plant reads the family and the cavity. It does not translate “premium rigid” into a knife.

What fails when the RFQ says only rigid

Replace the adjective with one family, then the millimetres.

• “Rigid paper box” with a photo of a lid-and-base and a note that it must ship flat: those are two families. Pick one.
• 硬盒 used for both a 2 mm grey-board wrap and an MDF wine box: name the core.
• Caja de lujo with no millimetres: there is no die.
• Assuming rigid includes a magnet, a ribbon, and an insert: none of those is the default.
• Asking this page to choose the structure for you: the comparison sits in the structure article. The RFQ still has to name one.