Patent · US Active

Method for the production of a cylindrical, strand-shaped part

US8491744B2 · kind B2 · utility

1Cited by

5References

19Claims

0Family size

Assignee

UPONOR INNOVATION AB · SE

Inventors

Reinhold Freermann · Ochtrup, DE
Ralf Winterstein · Neuffen, DE
Franz-Josef Riesselmann · Löhne, DE

Key dates

Filing date	Aug 31, 2007
Grant date	Jul 23, 2013
Priority date	—
Expiry date	May 12, 2028

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29C48/21
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The invention relates to a method for producing a strand-shaped part, wherein a hollow section (16) of metal is extruded, the extruded metal hollow section (16) cools and/or is cooled, and a plastic strand (28) having one or more layers is extruded into the extruded metal hollow section (16) after or during cooling. The plastic strand (28) passes by a dispensing tool (24), exposed to the heat of the extruded metal hollow section (16) of an extruder (34). The dispensing tool is inserted into the metal hollow section (16) and comprises a dispensing outlet (26), which is disposed inside a region of the metal hollow section (16) in which the dispensing tool is cooled in relation to the temperature thereof during extrusion.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.