METHOD AND APPARATUS FOR DRY MANUFACTURING RIGID CELLULOSE PRODUCTS
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United States of America
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Issued Date -
Mar 6, 2025
app pub date -
Mar 28, 2022
filing date -
Mar 28, 2022
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Abstract
The invention relates to an apparatus (100) and method for dry manufacturing rigid cellulose products having essentially non-flat general shape. The apparatus (100) comprises a disintegrating unit (3), a multi-stage cellulose blank forming unit (30) and a product forming unit (40) for producing rigid cellulose products (14). The multi-stage cellulose blank forming unit (30) comprising a dispenser for guiding a cellulose fibre carrying air flow from the disintegrating unit (3), a first forming drum (15) having an outer surface configured for receiving cellulose fibres originating from the dispenser and for forming part of the cellulose blank (13), by means of a first air removing device (54) arranged inside the first forming drum (15), a second forming drum (15′) having an outer surface configured for receiving cellulose fibres originating from the dispenser and from the outer surface of the first forming drum (15) and for forming the continuous or discontinuous cellulose blank (13), by means of a second air removing device (54′) arranged inside the second forming drum (15), and a support structure (8) for receiving the continuous or discontinuous cellulose blank (13) formed on said second forming drum (15′).
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