B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/746
B29C 47/04 (2006.01) B29C 47/16 (2006.01)
Patent
CA 1219108
ABSTRACT OF THE DISCLOSURE: A process and apparatus for producing a sheet exhibiting a colored band of varying color intensity. The apparatus comprises an extruder for melting a stream of thermo- plastic synthetic resin and with a slot die tool having a distributor duct with a throttle zone located upstream thereof, with a back pressure plate, with a forward zone formed between an upper lip and a lower lip including a wide nozzle orifice to shape the sheet. The slot die tool further- more comprises an injection port for an additional,and thermoplastic partial melt stream. The injection port com- prises a small slot die as seen in the extrusion direction positioned at the forward side of the back pressure plate of the slot die tool and a nozzle plate attached in front there- of, with a narrow nozzle orifice extending at right angles to the extrusion direction along the front edge of the back pressure plate.
439768
Dynamit Nobel Aktiengesellschaft
Robic Robic & Associes/associates
LandOfFree
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