Method for manufacturing a cellulose product, cellulose product forming apparatus and cellulose product
AssigneePulPac AB
InventorsOve Larsson, Linus Larsson
Life of this patent
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Abstract
A method for manufacturing a cellulose product, comprising the steps: dry forming a cellulose blank in a dry forming unit; arranging the cellulose blank in a forming mould; heating the cellulose blank to a forming temperature in the range of 100° C. to 200° C.; and pressing the cellulose blank in the forming mould with a forming pressure of at least 1 MPa.
Claims15
A method for manufacturing a cellulose product having a non-flat shape, comprising the steps:
- dry forming a cellulose blank in a dry forming unit;
- arranging the cellulose blank in a forming mould comprising at least two openable and closable negative forming surfaces or parts and a flexible membrane constituting a seal and pressure chamber for a pressure media or fluid;
- heating the cellulose blank to a forming temperature in the range of 100° C. to 200° C.;
- and
- pressing the cellulose blank in the forming mould with a forming pressure of at least 1 MPa via the pressure media or fluid.
A cellulose product forming apparatus for manufacturing a cellulose product having a non-flat shape, the cellulose product forming apparatus comprising:
- a dry forming unit for forming a cellulose blank;
- a forming mould comprising at least two openable and closable negative forming surfaces or parts and a flexible membrane constituting a seal and a pressure chamber for a pressure media or fluid for forming the cellulose product;
- wherein the cellulose product forming apparatus comprises a fluid control device for the pressure media or fluid being an actuator configured to compress the fluid or a fluid flow control device configured to control and allow pressurized fluid to enter the pressure chamber having the flexible membrane as a portion of a wall thereof.
A cellulose product being a hollow bottle with compressed air-laid cellulose fibres.
Dependencies are inferred from the claim text.