| 摘要 |
There is provided a laminated fabric comprising a sheet portion of a material compatible with human skin, the being adhered to a second sheet formed of a substantially impermeable material having perforations provided therethrough, each perforation having at least one relatively wide region and at least one relatively narrow region along its length to define an internal chamber open to a first ("inner") side of the sheet and sufficiently closed to the other ("outer") side of the sheet to permit air passing from the first to the other side of sheet to accumulate in the chamber under increased pressure prior to passing out to the other side of the sheet. |
