FIELD: building.
SUBSTANCE: extruder die contains detachable two-sectioned body equipped with cooling system forming moulding channels of profile section with upper and lower sections of head body. Moulding channels are connected with supply channel. In upper section there are formed cavities hollow surface of which is shaped as truncated cycloid. On insert mounted between two sections the oval flanges are provided symmetrically to surfaces of curve hollows of upper section. Lower section of body contains grooves for refrigerant duct.
EFFECT: allows for improved quality of extruded polymer structural shape rail.
3 dwg
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RU2326763C2 |
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RU2266820C1 |
