Method of making an elastic film, in particular for a hygienic article
US8648139B2 · kind B2 · utility
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5Claims
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Key dates
| Filing date | Dec 16, 2010 |
| Grant date | Feb 11, 2014 |
| Priority date | — |
| Expiry date | Dec 16, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L53/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An elastic film for a hygienic article is made by first premixing polymer components to form a polymer composite that contains styrene block copolymers and then extruding the polymer composite to make at least one layer. During the premixing or the extruding zeolites are added having pores of a size larger than 2.5 Angstrom and smaller than 5.5 Angstrom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.