FIELD: polymer materials. SUBSTANCE: invention relates to manufacturing sheet products from polytetrafluoroethylene and may be, in particular, used for manufacturing ring gaskets and insertions in mechanical engineering and transport. In extruder for manufacturing fluoroplastic tape, combination head consists of casing and central shaped nozzle. The latter includes centering cylindrical surface, faceted stop, and conical distributor. Inner surface of head casing includes centering cylindrical surface with taper inverse to that of conical distributor. There are shaped pockets in coupling points of stop faces with centering cylindrical surface of nozzle. The pockets are coupled with matching shaped pockets made on centering cylindrical surface of casing. EFFECT: improved design. 3 dwg
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Authors
Dates
1997-07-27—Published
1994-01-13—Filed