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US 11,839,999 B2Granted
Method for manufacturing a cellulose product, cellulose product forming apparatus and cellulose product
AssigneePulPac AB
InventorsOve Larsson, Linus Larsson
Life of this patent
Estimating the term…
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.
Claims19
A method for manufacturing a cellulose product, comprising the steps:
- dry forming a cellulose blank consisting essentially of cellulose fibres in a dry forming unit, wherein the cellulose blank is free of plastic,
- arranging the cellulose blank in a forming mould,
- heating the cellulose blank to a forming temperature of at least 100° C.;
- and
- pressing the cellulose blank in the forming mould with a forming pressure of at least 1 MPa, characterized in that, when dry forming the cellulose blank in the dry forming unit cellulose fibres are carried and formed to the cellulose blank by air as carrying medium
- wherein the cellulose blank is formed into a cellulose product having a three-dimensional shape.
3 more elements
A cellulose product forming apparatus for manufacturing a cellulose product having a three-dimensional shape from a cellulose, the cellulose product forming apparatus comprising:
- a heating unit configured for heating a cellulose blank which is free of plastic to a forming temperature of at least 100° C.;
- a forming mould configured to form the cellulose product by pressing the cellulose blank in the forming mould with a forming pressure of at least 1 MPa;
- characterized in that the cellulose product forming apparatus further comprises a dry forming unit for forming the cellulose blank consisting essentially of cellulose fibres, where the cellulose fibres are carried and formed to the cellulose blank by air as carrying medium wherein the forming mould is adapted to form the cellulose blank into a cellulose product having a three-dimensional shape.
Dependencies are inferred from the claim text.