The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 29, 2006
Filed:
Jun. 16, 2003
Erich Schuermann, Sendenhorst, DE;
Juergen Herrmann, Graefelfing, DE;
Ansgar Jaeger, Lauf, DE;
Marco Prigandt, Kahl, DE;
Joerg Seidel, Burgthann, DE;
Erich Schuermann, Sendenhorst, DE;
Juergen Herrmann, Graefelfing, DE;
Ansgar Jaeger, Lauf, DE;
Marco Prigandt, Kahl, DE;
Joerg Seidel, Burgthann, DE;
Demag Ergotech GmbH, Schwaig, DE;
Abstract
A foaming agent charging and mixing device comprises at least one mixing device and one foaming agent metering device, wherein the foaming agent charging and mixing device may be arranged between an plasticating screw and a mold. In order to improve the foaming agent charging and mixing device in a manner that the mixing with foaming agent is facilitated and at the same time a risk of obstruction of the foaming agent metering device is avoided, the foaming agent metering device is alternately opened and closed through the mixing device during operation thereof for supplying foaming agent to the plastic melting.