Textile-like apertured plastic films
US5997986A · kind A · utility
56Cited by
42References
52Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 11, 1996 |
| Grant date | Dec 7, 1999 |
| Priority date | — |
| Expiry date | Dec 11, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24998
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Apertured plastic films comprise a stretchable thermoplastic polymeric material having a plurality of micro-holes defined by a network of fiber-like elements. The films are produced by directing fluids, especially water, against the upper surface of a starting film in the form of columnar streams in a contact zone, while the film is supported on a backing element. The films of the invention are useful as covering materials for absorbent products such as diapers, wound dressings and sanitary napkins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.