PRODUCT FORMING UNIT FOR DRY-FORMING A CELLULOSE PRODUCT AND METHOD FOR DRY-FORMING A CELLULOSE PRODUCT

Patentradars sammanfattning

PulPac AB's invention describes a product forming unit and associated method for dry-forming cellulose products (e.g., bottles, cups, containers) from cellulose fibres without wet-forming processes. The unit employs a forming mould with laterally movable first and second mould parts that open and close around cellulose fibres, combined with a pressure lance whose second end is pivotably repositioned relative to the mould parts between open and closed states. A flexible membrane connected to the pressure lance's second end is inflated with a pressure medium to press cellulose fibres against heated mould surfaces, producing three-dimensional compressed fibre structures with closed bottom portions. An optional upstream pre-forming mould enables simultaneous neck and semi-closed-bottom formation, increasing throughput and product quality.

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