WIPO publishes K-C Worldwide patent for 'biodegradable and flushable multi-layered film' that can be used as backsheet of an absorbent article

Nevin Barich

GENEVA , January 5, 2014 (U.S. Fed News) – Publication No. WO/2014/001923 was published on Jan. 3.

Title of the invention: "BIODEGRADABLE AND FLUSHABLE MULTI-LAYERED FILM."

Applicants: KIMBERLY-CLARK WORLDWIDE INC. (US).

Inventors: James Hongxue Wang (US) and Gregory James Wideman (US).

According to the abstract* posted by the World Intellectual Property Organization: "A biodegradable and flushable film is generally provided. The film can be a multi-layer film including a water-dispersible core layer that comprises a water- soluble polymer; and a water-barrier skin layer positioned adjacent to the water- dispersible core layer. The water-dispersible core layer constitutes from about 50 wt.% to about 99 wt.% of the film, while the water-barrier skin layer constitutes from about 1 wt.% to about 50 wt.% of the film. The biodegradable polymers of the water-barrier skin layer can constitute from about 80 wt.% to 100 wt.% of the polymer content in the water-barrier skin layer, with from about 10 wt.% to about 90 wt.% of the biodegradable polymers being polyalkylene carbonate and from about 10 wt.% to about 90 wt.% of the biodegradable polymers being biodegradable polyesters. The film may be used as a packaging film or as a backsheet of an absorbent article."

The patent was filed on May 22, 2013 under Application No. PCT/IB2013/054249.

*For further information, including images, charts and tables, please visit: http://www.wipo.int/patentscope/search/en/detail.jsf?docId=WO2014001923

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