Patent · US Expired

Method of and apparatus for cleaning objects of plastics processing machines

US5485858A · kind A · utility

7Cited by

13References

27Claims

0Family size

Assignee

Caroline Christ Abgasfreie Werkzeugreinigungsapparate fur die Kunststoffindustrie · DE

Inventor

Rudolf Schmidt · Giengen an der Brenz, DE

Key dates

Filing date	Jan 24, 1994
Grant date	Jan 23, 1996
Priority date	—
Expiry date	Jan 24, 2014

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29C33/72
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A method of and apparatus for removing plastic residues from objects of plastics processing machines includes a container with a treatment chamber filled with a heat transfer fluid and receiving an object such as extrusion heads or blow heads. A considerable reduction of the cleaning period is attained when withdrawing from the treatment chamber a portion of the heat transfer fluid and after being pressurized by a pump returning pressurized heat transfer fluid back into the chamber in form of a focused stream which is pointed in direction of the object being cleaned.

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