Method and apparatus for foam manufacture using carbon dioxide dissolved under pressure

US5643970A · kind A · utility

Assignees

• Maschinenfabrik Hennecke GmbH · DE
• BAYER HEALTHCARE LLC · DE

Inventors

• Hans-Michael Sulzbach · Rübhausen, DE
• Ferdinand Althausen · Neunkirchen, DE
• Herbert Steilen · Rübhausen, DE
• Reiner Raffel · Siegburg, DE
• Robert Eiben · Lampertheim, DE
• Wilfried Ebeling · Neunburg vorm Wald, DE

Key dates

• Filing date: Dec 14, 1995
• Grant date: Jul 1, 1997
• Expiry date: Dec 14, 2015

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S521/914
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

For the expansion of a liquid containing gas under pressure in dissolved form, it is proposed that the liquid be passed with expansion through an extended flow channel with a small cross-sectional measurement with generation of high rates of shear. The velocity of the liquid is then reduced prior to the foaming.