Apparatus for applying adhesive seams to webs
Abstract
Abstract Apparatus is disclosed for applying adhesive seams to high speed webs for securing them together. An even coating of the adhesive, heated, if necessary is applied to a rotating gravure roll; and one web is fed in partial wrapping engagement about a rotating plate cylinder having a raised transfer bar fixed to its periphery. As the rolls rotate, the transfer bar engages the traveling web and elevates it above the surface of the plate cylinder and into contact with the gravure roll to deposit a seam of adhesive to the outer convex surface of the web according to the pattern defined by the transfer bar. The two webs are then pressed together and secured by the adhesive. Adhesive seams may also be applied to both webs, if desired, with the applied seams being in register with each other, then presses together.
Inventors
- 👤 Ernst Daniel Nystrand
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |