Spundbonded fabrics comprising biodegradable polycaprolactone filaments and process for its manufacture

US5466517A · kind A · utility

Assignee

• Carl Freudenberg · DE

Inventors

• Helmut Eschwey · Hilden, DE
• Monika Giesen-Wiese · Bad König, DE
• Maria Grill · Koblenz, DE
• Ararad Emirze · Kaiserslautern, DE
• Hans-Peter Seidler · Kaiserslautern, DE
• Bernhard Klein · Bear River, US
• Michael Kauschke · Braunschweig, DE

Key dates

• Filing date: Jun 12, 1992
• Grant date: Nov 14, 1995
• Expiry date: Jun 12, 2012

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T442/681
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A spunbonded fabric comprises continuous thermoplastic filaments, which adhere to one another at their intersecting points without binder, and whose material comprises at least 50 weight % biodegradable polycaprolactone having a mean molecular weight of from 35,000 to 70,000. In the production process of the spunbonded fabric, no additional stabilization step is necessary after the filaments are deposited.