Polymer extrusion die

Details Polymer extrusion die Polymer extrusion die

B - Operations, Transporting

29

C

B29C 47/12 (2006.01) D01D 4/02 (2006.01)

Patent

CA 2182870

An improved die, containing one or more orifices, for the extrusion of polymers is disclosed wherein the orifices are flared at the polymer discharge end, and the orifices have certain relative dimensions and configurations. The dies are useful for producing items such as films, shaped profiles, sheets, fibers, strands, etc. Also disclosed are a process for using the die, and an extrusion apparatus containing such a die.

Cette invention se rapporte à une filière améliorée, contenant un ou plusieurs orifices, pour l'extrusion de polymères. Dans cette filière, les orifices sont évasés à l'extrémité de décharge des polymères et ils possèdent certaines dimensions et configurations relatives. De telles filières servent à produire des articles, tels que des films, des profilés façonnés, des feuilles, des fibres, des cordons, etc. Cette invention concerne également un procédé d'utilisation de cette filière, ainsi qu'un appareil d'extrusion contenant une telle filière.

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