Nonwoven textile sponge for medicine and hygiene, and methods for the production thereof

US4731277A · kind A · utility

Assignee

• Firma Carl Freudenberg · DE

Inventors

• Dieter Groitzsch · Hirschberg, DE
• Hans-Jurgen Kuhlwein · Viernheim, DE

Key dates

• Filing date: Jun 27, 1986
• Grant date: Mar 15, 1988
• Expiry date: Jun 27, 2006

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T442/696
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

Disclosed is a nonwoven, textile sponge for use in medical and hygienic applications consisting of at least one outer, thermally consolidated, moisture-repellent fiber layer containing at least 80% synthetic heterofil filaments and at least one layer of absorbent fibers. The sponge is perforated, but does not have any substantial fiber entanglement, and contains no binding agent of any kind. Also disclosed is a method for the manufacture of the sponge, in which the fiber nonwovens are laid one on the other, hydraulically perforated without fiber entanglement, and then thermally consolidated through heterofil filaments.