| 摘要 |
<p>Methods and apparatus for applying elastic material (4) in a curvilinear pattern on a continuously moving substrate (7). The method moves a substrate along a substrate path (25), supplies the elastic material to an oscillation unit first roll (42) mounted for pivoting and rolling engagement with a transfer roll (50), oscillates the oscillation unit (40) in a path generally transverse to the substrate path, applies the elastic material from the first roll to the transfer roll in the desired curvilinear path configuration, then applies the elastic material from the transfer toll to the substrate and bonds the elastic material to the substrate. Optionally the first roll may apply the elastic material directly to the substrate. Also at least two webs of elastic materials may be applied to a continuously moving substrate in at least two curvilinear substrate paths by supplying the elastic materials to a single transfer roll, applying the elastic materials to the substrate. The apparatus (10) has a substrate transport apparatus (20), a rotatable tranfer roll (50) in rolling engagement with the substrate (7) to press an elastic material (4) against the substrate along a curvilinear path, an oscillation unit (40) having a first roll (42) in both rolling and pivoting engagement with the transfer roll to place the elastic material onto the tranfer roll, an elastic material supply (3) for providing the elastic material to the first roll of said oxillation unit, an oscillating drive (70) connected to oscillate the oscillation unit for generally transversely to the substrate path and a bonding apparatus to secure the curvilinear elastic material to the substrate along the curvilinear path. Optionally the first roll may directly contact the substrate with the elastic material.</p> |
