B - Operations – Transporting – 29 – D
Patent
B - Operations, Transporting
29
D
B29D 28/00 (2006.01) B27N 3/08 (2006.01) B29C 33/00 (2006.01) B29C 43/10 (2006.01) D21F 11/00 (2006.01)
Patent
CA 2110696
Method and apparatus to form grids of open cells from fibers (22), especially wood fibers and fibers from waste paper and mixed waste materials. The invention utilizes a screen (18) carrying a plurality of elastomeric pads (20) of predetermined sizes arranged thereon in predetermined spaced relation to each other. The fiber is deposited between the pads but not above the pads. The deposited fibers and the pads are compressed normal to the screen, whic causes the fibers in the spaces between the pads to be consolidated both normal and parallel to the screen, resulting in an open grid having cells of the shape of the pads. Numerous variations are provided, including several continuous production embodiments. The invention uses state of the art technology for virtually all aspects.
Cette invention concerne une méthode et appareil de formation de réseaux d'alvéoles ouvertes à partir de fibres (22), en particulier de fibres de bois et de fibres de vieux papiers et de rebuts divers. L'objet de l'invention fait appel à une toile (18) portant une série de plots élastomères (20) de dimensions prédéterminées disposés selon un écartement prédéterminé les uns des autres. Les fibres sont déposées entre les plots, mais non au-dessus. Les fibres déposées et les plots sont soumis à une pression perpendiculaire au plan de la toile pour agglomérer les fibres se trouvant entre les plots. Cette opération donne un réseau d'alvéoles ouvertes ayant la forme des plots. L'invention prévoit de nombreuses variantes, ainsi que plusieurs procédés de production en continu. L'invention fait appel à des techniques de pointe pour virtuellement toutes les étapes de la production.
Fetherstonhaugh & Co.
U.s. Departm Ent Of Commerce The United States Of America Represented By The Secretary
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