D21J - CPC Classification

• D21J1/00 » Fibreboard 41
• D21J3/00 » Manufacture of articles by pressing wet fibre pulp, or papier-mâchè, between moulds 159
• D21J5/00 » Manufacture of hollow articles by transferring sheets, produced from fibre suspensions or papier-mâchè by suction on wire-net moulds, to couch-moulds 59
• D21J7/00 » Manufacture of hollow articles from fibre suspensions or papier-mâchè by deposition of fibres in or on a wire-net mould 104