Patent · US Expired

Apparatus for the cooling, calibrating and straightening of a plate-shaped continuously extruded synthetic-resin strand

US4194872A · kind A · utility

6Cited by

5References

10Claims

0Family size

Assignee

REIFENHAEUSER GMBH & CO. KG

Inventors

Wilhelm Hinterkeuser · Menden, DE
Norbert Herres · Hennef (Sieg), DE
Paul Reitemeyer · Troisdorf, DE

Key dates

Filing date	Sep 2, 1977
Grant date	Mar 25, 1980
Priority date	—
Expiry date	Sep 2, 1997

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29C48/906
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

An apparatus for the cooling, straightening and calibration of a plate-shaped synthetic-resin strand, e.g. of thermoplastic material extruded from a broad-slot nozzle comprises a plurality of straightening rollers on respective stands, the rollers of each stand engaging opposite surfaces of the strand. The rollers are provided with cooling and heating means to ensure homogeneous temperature distribution throughout the strand passing between the pairs of rollers which can be aligned with one another or can be offset from one another. On at least one of the stands the rollers are displaceable alternately parallel to the path of the strand by corresponding oscillating drive.

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