Method of manufacturing a top sheet or back sheet of a disposable absorbent article
US8439813B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 2009 |
| Grant date | May 14, 2013 |
| Priority date | — |
| Expiry date | Jun 4, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1015
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method of manufacturing a top sheet material or back sheet material for use in the manufacture of disposable absorbent articles including the steps of: a) splitting a continuous first web of sheet material having substantially straight side edges into a second and third continuous web by an alternating concave-convex cutting line cut in a longitudinal direction along the continuous first web, the cutting line being distanced from both side edges of the continuous first web; b) shifting the second continuous web in a lateral direction in relation to the third continuous web so that the substantially straight edges of the second and third continuous webs are parallel to and adjacent to each other and longitudinally shifting the second continuous web so that the series of concave edge portions and the series of convex edge portions of the second and third continuous webs are longitudinally aligned with each other; c) directly or indirectly joining the substantially straight edges of the second and third continuous webs to each other, thereby forming a composite fourth web. The cutting line is made in the first continuous web so that all portions of the cutting line are distanced fro…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.