US 12,134,214 B2
Method for manufacturing a cellulose product by a pressure moulding apparatus, pressure moulding apparatus and cellulose product
Ove Larsson, Västra Frölunda (SE); and Linus Larsson, Gothenburg (SE)
Assigned to PulPac AB, Västra Frölunda (SE)
Filed by PulPac AB, Gothenburg (SE)
Filed on Apr. 8, 2022, as Appl. No. 17/716,908.
Application 17/716,908 is a continuation of application No. 16/085,456, granted, now 11,407,149, previously published as PCT/SE2017/050254, filed on Mar. 16, 2017.
Claims priority of application No. 1630058-4 (SE), filed on Mar. 18, 2016.
Prior Publication US 2022/0227027 A1, Jul. 21, 2022
Int. Cl. B29C 43/10 (2006.01); B27N 3/04 (2006.01); B27N 3/08 (2006.01); B27N 5/02 (2006.01); B29B 13/06 (2006.01); B29C 43/00 (2006.01); B29C 43/02 (2006.01); B29C 43/20 (2006.01); B29C 43/36 (2006.01); B29C 43/46 (2006.01); B29C 43/52 (2006.01); B29C 43/58 (2006.01); B29C 49/00 (2006.01); B29C 49/22 (2006.01); B29C 51/00 (2006.01); B29C 51/08 (2006.01); B29C 51/30 (2006.01); B29C 51/42 (2006.01); B31B 50/59 (2017.01); B65B 43/08 (2006.01); D04H 1/732 (2012.01); B29C 49/04 (2006.01); B29C 49/58 (2006.01); B29C 51/16 (2006.01); B29K 1/00 (2006.01); B29K 311/10 (2006.01); B29L 31/00 (2006.01); B31B 120/00 (2017.01)
CPC B29C 43/10 (2013.01) [B27N 3/04 (2013.01); B27N 3/08 (2013.01); B27N 5/02 (2013.01); B29B 13/065 (2013.01); B29C 43/003 (2013.01); B29C 43/02 (2013.01); B29C 43/20 (2013.01); B29C 43/3642 (2013.01); B29C 43/46 (2013.01); B29C 43/52 (2013.01); B29C 43/58 (2013.01); B29C 49/0005 (2013.01); B29C 49/22 (2013.01); B29C 51/002 (2013.01); B29C 51/004 (2013.01); B29C 51/082 (2013.01); B29C 51/30 (2013.01); B29C 51/42 (2013.01); B31B 50/59 (2017.08); B65B 43/08 (2013.01); D04H 1/732 (2013.01); B29C 2043/3647 (2013.01); B29C 2043/5808 (2013.01); B29C 49/04 (2013.01); B29C 49/58 (2013.01); B29C 51/08 (2013.01); B29C 51/16 (2013.01); B29K 2001/00 (2013.01); B29K 2311/10 (2013.01); B29L 2031/7158 (2013.01); B31B 2120/00 (2017.08)] 7 Claims
OG exemplary drawing
 
1. A method for manufacturing a cellulose product having a non-flat product shape by a pressure moulding apparatus comprising a forming mould, the forming mould having a forming surface defining said product shape, comprising the steps of:
arranging a tube shaped cellulose blank containing less than 45 weight percent water in said forming mould, wherein an outer layer of the tube shaped cellulose blank is uncompressed cellulose fibres and its additives and an inner layer is a single-use membrane comprising a thin film barrier, wherein the forming mould comprises at least two openable and closable negative forming surfaces or parts surrounding the tube shaped cellulose blank, wherein the tube shaped cellulose blank is supplied from the top surrounding a fixed pressure media nozzle;
heating said cellulose blank to a forming temperature in the range of 100° C. to 200° C.; and
pressing said cellulose blank by means of said forming mould with a forming pressure acting on the cellulose blank across said forming surface by filling an inner volume of the cellulose blank with a pressure media from the pressure media nozzle, said forming pressure being in the range of 1 MPa to 100 MPa.