IT1034462B - Procedimento e dispositivo per la fabbricazione di tubi a parete dop pia fatti di materia plastica aven ti parete esterna con nervature ad anelli o ad elica - Google Patents

Procedimento e dispositivo per la fabbricazione di tubi a parete dop pia fatti di materia plastica aven ti parete esterna con nervature ad anelli o ad elica

Info

Publication number
IT1034462B
IT1034462B IT2149475A IT2149475A IT1034462B IT 1034462 B IT1034462 B IT 1034462B IT 2149475 A IT2149475 A IT 2149475A IT 2149475 A IT2149475 A IT 2149475A IT 1034462 B IT1034462 B IT 1034462B
Authority
IT
Italy
Prior art keywords
die
double walled
air
walled tube
extrusion
Prior art date
Application number
IT2149475A
Other languages
English (en)
Italian (it)
Inventor
R P Hegler
W Hegler
Original Assignee
Hegler Wilhelm
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE2413879A external-priority patent/DE2413879C3/de
Priority claimed from DE2413878A external-priority patent/DE2413878C3/de
Application filed by Hegler Wilhelm filed Critical Hegler Wilhelm
Application granted granted Critical
Publication of IT1034462B publication Critical patent/IT1034462B/it

Links

Landscapes

  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
IT2149475A 1974-03-22 1975-03-21 Procedimento e dispositivo per la fabbricazione di tubi a parete dop pia fatti di materia plastica aven ti parete esterna con nervature ad anelli o ad elica IT1034462B (it)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2413879A DE2413879C3 (de) 1974-03-22 1974-03-22 Vorrichtung zur Herstellung eines doppelwandigen Kunststoffrohrs aus einem gewellten Außenrohr und einem glatten Innenrohr
DE2413878A DE2413878C3 (de) 1974-03-22 1974-03-22 Verfahren zum Herstellen eines doppelwandigen Kunststoffrohrs mit gewellter Außen- und glatter Innenwand und Vorrichtung zur Durchführung dieses Verfahrens

Publications (1)

Publication Number Publication Date
IT1034462B true IT1034462B (it) 1979-09-10

Family

ID=25766857

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2149475A IT1034462B (it) 1974-03-22 1975-03-21 Procedimento e dispositivo per la fabbricazione di tubi a parete dop pia fatti di materia plastica aven ti parete esterna con nervature ad anelli o ad elica

Country Status (9)

Country Link
AR (1) AR207352A1 (fi)
BG (1) BG27885A3 (fi)
BR (1) BR7501741A (fi)
EG (1) EG11746A (fi)
FI (1) FI60990C (fi)
IL (1) IL46892A (fi)
IT (1) IT1034462B (fi)
PL (1) PL100947B1 (fi)
YU (1) YU67975A (fi)

Also Published As

Publication number Publication date
BR7501741A (pt) 1975-12-23
AR207352A1 (es) 1976-09-30
EG11746A (en) 1978-12-31
FI60990C (fi) 1982-05-10
AU7943675A (en) 1976-09-30
IL46892A0 (en) 1975-05-22
FI750830A (fi) 1975-09-23
PL100947B1 (pl) 1978-11-30
FI60990B (fi) 1982-01-29
IL46892A (en) 1978-07-31
YU67975A (en) 1982-02-28
BG27885A3 (en) 1980-01-15

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