Lateral melt feed extrusion nozzle for films or slabs
First Claim
1. An extrusion die for the shaping of extruded melts of thermoplastic materials into film or sheet webs, substantially comprising the die body (1), at least one orifice for the melt feed (2) into a manifold (3) with at least one restricting island (4) and a slot-shaped die outlet region (5), characterized in that the melt feed (2) into the manifold (3) takes place laterally with respect to the direction of extrusion (E) predetermined by the die outlet region (5).
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Accused Products
Abstract
The invention relates to an extrusion nozzle for shaping extruded melts produced from thermoplastics to webs of film or slabs. Said nozzle substantially comprises a nozzle body (1), at least one opening for feeding the melt (2) to a distributing channel (3) with at least one retaining island (4) and a slit die-type nozzle emergence zone (5). The melt (2) is fed to the distributing channel (3) laterally relative the extrusion direction (E) predetermined by the nozzle emergence zone (5). The invention further relates to a corresponding production method and to films and slabs produced according to the inventive method.
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Citations
11 Claims
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1. An extrusion die for the shaping of extruded melts of thermoplastic materials into film or sheet webs, substantially comprising the die body (1), at least one orifice for the melt feed (2) into a manifold (3) with at least one restricting island (4) and a slot-shaped die outlet region (5),
characterized in that the melt feed (2) into the manifold (3) takes place laterally with respect to the direction of extrusion (E) predetermined by the die outlet region (5).
Specification