Nozzle unit for applying glue

US5915625A · kind A · utility

Inventors

• Heinz Focke · Verden, DE
• Michael Schlenker · Hiddestorf, DE
• Peter Kainz · Sankt Andrä vor dem Hagenthale, AT

Key dates

• Filing date: Jan 2, 1996
• Grant date: Jun 29, 1999
• Expiry date: Jan 2, 2016

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B05C5/02
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

In the processing of rapidly hardening flowable substances, especially glue, it is important to avoid hardening of glue residuals within the nozzle unit during temporary interruptions of operation. For this purpose, a liquid, especially water, is supplied through a nozzle duct so that the glue is rinsed out of an end section (31) facing the nozzle orifice (17). By closing the nozzle duct (16), a water column remains in the nozzle duct (16) and seals it towards the outside.