| 摘要 |
Composite filter rods, from which composite filters for attachment to cigarette lengths are obtained, are produced by joining component filter portions with uniting bands which overlap the end portions only of adjacent filter portions. The uniting bands are obtained by longitudinally slitting a web of wrapping material into strips, spacing the strips by passing each strip around spaced turner bars, and finally severing the strips on a rolling drum. The component filter portions are conveyed transversely in aligned groups to a rolling plate which cooperates with the rolling drum to wrap a uniting band around each junction between adjacent filter portions in a group. |
