US3994768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Support and cleaning means for guide fingers of corrugator
Assignee: S&S Corrugated Paper Machinery Co Inc
•
Filing: 1976-03-01
•
Granted: 1976-11-30
•
Expires: 1996-03-01
Abstract
Abstract Apparatus for producing single face corrugated board is provided with a plurality of guide fingers that support the corrugated web until the liner is applied thereto at the nip between a pressure roll and one of the corrugating roll. A hollow member extending parallel to the roll axes is provided with a plurality of slots wherein the fingers are supported in the region of the aforesaid nip. Air under pressure is introduced into the hollow member and is distributed therefrom to bleed into the slots whereby pressurized air is directed against the guide fingers to limit adhesive buildup thereon.
Inventors
- 👤 Lawrence H. Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:54
CPC Classifications
B; B31; B31F; B31F1/00; B31F1/20; B31F1/24; B31F1/26; B31F1/28; B31F1/2845
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
189 words
Apparatus for producing corrugated board, said apparatus including first and second intermeshing corrugating rolls rotatably mounted on parallel axes, a moving first web guided through a first nip between said corrugating rolls to have transverse corrugations applied thereto, first means for applying adhesive to crowns of corrugations on one side of said first web, a pressure roll rotatably mounted on an axis parallel to said axes and positioned adjacent to said second corrugating roll, a moving second web guided through a second nip between said second corrugating roll and said pressure roll; at said second nip said pressure roll engaging the second web to force it against adhesive covered crowns of said first web, a plurality of guide fingers spaced in a direction parallel to said axes and extending in the direction of movement of said first web and supporting said first web in engagement with said second corrugating roll as said first web travels from said first to said second nips; second means for applying the pressurized air directed at said guide fingers in the vicinity of said second nip for preventing excessive adhesive buildup on said fingers.
Claim 2
Dependent Claim
189 words
Apparatus for producing corrugated board, said apparatus including first and second intermeshing corrugating rolls rotatably mounted on parallel axes, a moving first web guided through a first nip between said corrugating rolls to have transverse corrugations applied thereto, first means for applying adhesive to crowns of corrugations on one side of said first web, a pressure roll rotatably mounted on an axis parallel to said axes and positioned adjacent to said second corrugating roll, a moving second web guided through a second nip between said second corrugating roll and said pressure roll; at said second nip said pressure roll engaging the second web to force it against adhesive covered crowns of said first web, a plurality of guide fingers spaced in a direction parallel to said axes and extending in the direction of movement of said first web and supporting said first web in engagement with said second corrugating roll as said first web travels from said first to said second nips; second means for applying the pressurized air directed at said guide fingers in the vicinity of said second nip for preventing excessive adhesive buildup on said fingers.
Claim 3
Dependent Claim
27 words
Apparatus as set forth in claim 1 also including third means extending parallel to said axes and supporting said fingers in the region of said second means.
Claim 4
Dependent Claim
32 words
Apparatus as set forth in claim 2 in which the third means includes a plurality of guide slots extending transverse to said axes, said guide fingers being supported in said guide slots.
Claim 5
Dependent Claim
29 words
Apparatus as set forth in claim 3 in which the second means directs pressurized air into said guide slots and against said fingers to prevent excessive adhesive buildup thereon.
Claim 6
Dependent Claim
37 words
Apparatus as set forth in claim 4 in which the second means includes a manifold on said third means extending generally parallel to said axes and connected to said guide slots by a plurality of bleed apertures.
References Cited (Backward Citations)
US1642782A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-11-30 | 1980-05-31 | 1980-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-30 | 1984-05-31 | 1984-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-30 | 1988-05-31 | 1988-11-30 | $7700.00 | Window Closed / Lapsed |