Method for suppressing bubbles in calendered elastomer

US5298210A · kind A · utility

Assignee

• Firma Carl Freudenberg · DE

Inventors

• Klaus Heckel · Weinheim, DE
• Herbert Arnold · Eberdingen, DE
• Gerhard Graab · Mannheim, DE

Key dates

• Filing date: Dec 13, 1990
• Grant date: Mar 29, 1994
• Expiry date: Dec 13, 2010

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B29K2009/06
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

The invention involves the use of about 1 to 4 %wt cured elastomer irregularly-shaped particles having a sieve size of about 0.7 mm +/-0.1 mm in uncured elastomer to suppress bubble formation without substantial loss of tensile strength, in calendered, cured elastomer products, such as, decorative or sealing sheet materials.