Apparatus for applying an elastic in a curved pattern to a moving web
US4915767A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 1988 |
| Grant date | Apr 10, 1990 |
| Priority date | — |
| Expiry date | Nov 17, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F13/15609
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus (10) of the type for applying an elastic ribbon (18) onto the surface of a moving web (12) in curved line path relative to the longitudinal centerline (14) of the web (12) includes a nip roll (16) for directly rolling the elastic ribbon (18) into engagement with the moving web (12) and an oscillating roll (20) adjacent to and spaced from the nip roll (16) for oscillatiang the elastic ribbon (18) in a direction transverse the centerline of the web (12) and applying the elastic ribbon (18) to the nip roll (16) in the curved line path. A guide roll (22) guides the elastic ribbon (18) to wrap around the oscillating roll (20) and tension the elastic ribbon sufficiently for tracking and holding the lateral position of the elastic ribbon (18) on the nip roll (16) to be applied to the moving web (12) in the curved line path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.