Process for manufacturing disposable diapers and diaper briefs, and disposable diapers and diaper briefs obtained by application of this process
US4801345A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 1, 1984 |
| Grant date | Jan 31, 1989 |
| Priority date | — |
| Expiry date | May 1, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05C11/1034
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Adhesive is intermittently coated onto an elastic strip 4 which then passes over a grooved pulley 9 mounted on a slide or carriage 10 able to move intermittently on a slideway 11. A continuous flexible sheet consisting of a moisture-impermeable heat-sealable material is unreeled over the periphery of a rotary drum 3. The point of contact between the elastic strip 4, and the travelling impermeable sheet 2 is moved periodically in a direction transverse to the direction of travel of the sheet 2. This results in laying, along a curved path 4a of, a stretched elastic adhered to sheet 2. It is thus possible to make diaper units comprising crotch elastics edging the curvilinear profile of the leg openings or cut-outs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.