초록 ▼

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 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.

대표청구항 ▼

An apparatus for applying an elastic member in a curved path relative to its dwell line onto a continuously moving web, comprising: a rotatable nip roll adapted to be in rolling engagement with the web and to press an elastic member against the web such that the elastic member is spaced a predetermi

An apparatus for applying an elastic member in a curved path relative to its dwell line onto a continuously moving web, comprising: a rotatable nip roll adapted to be in rolling engagement with the web and to press an elastic member against the web such that the elastic member is spaced a predetermined maximum distance from the dwell line, a rotatable buffer roll being disposed above and in rolling engagement with said rotatable nip roll to cushion said rotatable nip roll against transient perturbations and being adapted to press the elastic member against said rotatable nip roll to maintain the elastic member in a curved form, and an oscillating roll being disposed above and spaced apart a predetermined length from said rotatable buffer roll, said oscillating roll oscillating in a path generally transverse to a direction of web travel and applying the elastic member in a curved line on said rotatable buffer roll, the predetermined maximum distance of the elastic member from the dwell line being directly proportional to the predetermined length between said oscillating roll and said rotatable buffer roll.