Method and apparatus for producing a stretchable sheet
US9296151B2 · kind B2 · utility
1Cited by
12References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2011 |
| Grant date | Mar 29, 2016 |
| Priority date | — |
| Expiry date | Oct 10, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/4878
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In a method of producing a stretchable sheet using a pair of gear rolls each having a plurality of teeth arranged on a circumference thereof, a raw sheet is drawn by passing the raw sheet through a gap between the pair of gear rolls. The raw sheet contains a plurality of types of fibers, and has a plurality of recessed sections formed by pressing. The recessed sections are formed collinearly at least along the drawing direction at a predetermined formation pitch in the drawing direction. An arrangement pitch of the teeth in the drawing direction is greater than the formation pitch and smaller than twice the formation pitch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.