Apparatus for mixing reactive synthetic-resin components

US5277567A · kind A · utility

Assignee

• KraussMaffei GmbH · DE

Inventors

• Adolf Bauer · Olching, DE
• Gereon Mertens · Feldafing, DE

Key dates

• Filing date: Jun 24, 1992
• Grant date: Jan 11, 1994
• Expiry date: Jun 24, 2012

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B29B7/7684
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A mixing head for a mold can receive two or more reactive synthetic resin components in a mixing chamber in which a mixing-chamber piston is displaceable to drive the residues into a first calming chamber communicating with the outlet of the mixing chamber. The first calming chamber also has a piston or plunger which can be advanced to drive the residues into a second calming chamber connected to the outlet of the first calming chamber. The second calming chamber has a second piston displacing the mixture into the mold cavity. Because the pistons of the first and second calming chambers can be retracted as the mixture flows through these chambers, a highly effective calming effect can be obtained for the turbulent mixture of the mixing chamber without throttling.