Web coating apparatus
Abstract
Abstract A HOT MELT COATER EMPLOYS A RESILIENT BACKUP ROLL AND AN EXTRUDER DIE WITH AN OFF-RUNNING DIE LIP IN TAPERED, RUNNING RELATION TO THE WEB FOR IRONING ONTO THE WEB FOR IRONING FACE A CONTROLLED AMOUNT OF HEATED COATING MATERIAL. THE DIE EMPLOYS A NARROW AND SHORT DIE ORIFICE, AND ELASTOMERIC PLUGS ARE INSERTED IN EACH END OF THE DIE WHICH ARE COMPRESSED TO SEAL OFF THE DIE CAVITY AND THE ORIFICE TO CONTROL THE WIDTH OF EXTRUSION. THE DIE IS SUPPORTED ON A COMPOUND ARM ARRANGEMENT PROVIDING ADJUSTMENT OF KNIFE PRESSURE AGAINST THE WEB, KNIFE PROFILE. AND KNIFE ATTITUDE CONTROL. PROVISION IS INCLUDED FOR RAPIDLY OPENING UP THE DIE FOR CLEANING WITHOUT DISTURBING THE ADJUSTMENT OF THE KNIFE APPLICATOR SURFACE.
Inventors
- 👤 James T Coghill
Bibliographic Details
Claims Analysis
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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) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |