A mould for forming a unitary article from pulp

• Main Authors: Joshua Lanzon-Miller, Natasha Wilson, Jonathan Morris, Adam Richard Turner
• Format: Patent
• Language: English
• Published: 19.07.2023
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS ORFROM PAPIER-MACHE; PAPER-MAKING; PERFORMING OPERATIONS; PRODUCTION OF CELLULOSE; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TEXTILES; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Mould for forming an article from a fibre suspension comprising a cavity in a negative shape of the bottle to be formed, at least two regions 28, 29, comprising a first porous region 28 being a first layer comprising a bottle-facing surface of the mould, a second porous region 29 in communication with the first porous region, the second porous region is a second layer serving as a supporting structure for the first region 28, where the second porous region 29 has fewer pores per surface are than the first porous region 28, the mould is configures to communicate a suspending fluid of the fibre suspension through the at least two regions 28, 29 of different porosity around the cavity. The mould may comprise a third porous region. The mould may be a removable insert for insertion into a mould block. The removable insert may be 3D printed. The fibre suspension may be 0.1 to less than 1% solids.