US3916077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Web coating method
Assignee: NewPage Wisconsin System Inc
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Filing: 1973-10-25
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Granted: 1975-10-28
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Expires: 1993-10-25
Abstract
Abstract In a coating method, the web is conveyed and supported on a rotating roll. Liquid coating material is applied by atomizing the material with air to create a mist adjacent to and contiguous with the supported web. A thin line of pressurized air from the discharge orifice of an air knife is directed toward the web on an angle against the direction of web travel and into a confined space away from the orifice to create a turbulent zone adjacent the web. Liquid coating material is metered under pressure into the turbulent zone through a slot of a chamber. The coating on the web is leveled by the same air stream in a second zone closely adjacent the air orifice.
Inventors
- 👤 Wayne A Damrau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:10
CPC Classifications
D; D21; D21H; D21H23/00; D21H23/02; D21H23/22; D21H23/50; D21H25/00; D21H25/08; D21H25/16; D21H5/00; D21H5/0005; D21H5/0047; D21H5/006; D21H5/0062; D21H5/007; Y; Y10; Y10T; Y10T428/00; Y10T428/31504
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
117 words
A METHOD FOR APPLYING LIQUID COATING MATERIAL TO A MOVING WEB COMPRISING THE STEPS OF DIRECTING A SINGLE STREAM OF HIGH VELOCITY AIR ACROSS SAID WEB IN A FIRST DISTINCT ZONE ON AN ANGLE AGAINST THE DIRECTION OF WEB TRAVEL, CHANNELING SAID STREAM OF AIR FROM SAID FIRST ZONE TO A SECOND DISTINCT ZONE PRECEDING SAID FIRST ZONE AND ADJACENT SAID WEB WHEREIN SAID STREAM OF AIR BECOMES SUBSTANTIALLY TURBULENT, DEPOSITING ATOMIZED COATING MATERIAL ON SAID WEB IN THE VICINITY OF SAID SECOND ZONE BY INJECTING A STREAM OF LIQUID COATING MATERIAL INTO SAID SECOND ZONE ADJACENT SAID WEB, AND THE IMMEDIATELY LEVELING THE COATING ON SAID WEB BY SAID STREAM OF AIR IN SAID FIRST ZONE.
Claim 2
Independent Claim
117 words
A METHOD FOR APPLYING LIQUID COATING MATERIAL TO A MOVING WEB COMPRISING THE STEPS OF DIRECTING A SINGLE STREAM OF HIGH VELOCITY AIR ACROSS SAID WEB IN A FIRST DISTINCT ZONE ON AN ANGLE AGAINST THE DIRECTION OF WEB TRAVEL, CHANNELING SAID STREAM OF AIR FROM SAID FIRST ZONE TO A SECOND DISTINCT ZONE PRECEDING SAID FIRST ZONE AND ADJACENT SAID WEB WHEREIN SAID STREAM OF AIR BECOMES SUBSTANTIALLY TURBULENT, DEPOSITING ATOMIZED COATING MATERIAL ON SAID WEB IN THE VICINITY OF SAID SECOND ZONE BY INJECTING A STREAM OF LIQUID COATING MATERIAL INTO SAID SECOND ZONE ADJACENT SAID WEB, AND THE IMMEDIATELY LEVELING THE COATING ON SAID WEB BY SAID STREAM OF AIR IN SAID FIRST ZONE.
Claim 3
Dependent Claim
36 words
The method of claim 1 comprising the further step of applying a first coating of liquid material to said web prior to the step of depositing atomized coating material thereon without drying the web between coats.
Claim 4
Dependent Claim
21 words
The method of claim 1 comprising the further step of drying the web after it has passed through said first zone.
Claim 5
Dependent Claim
26 words
The method of claim 2 comprising the further step of drying the web after it has passed through the first zone, and then calendering the web.
Claim 6
Dependent Claim
9 words
The product made by the process of claim 4.
Claim 7
Dependent Claim
9 words
The product made by the process of claim 3.
Claim 8
Dependent Claim
63 words
Method for applying liquid coating material to a moving web comprising the steps of supporting the moving web on a rotating roll, directing a single stream of air against the supported web, applying a mist of coating material across said web with said single stream of air, and then immediately skimming the coated surface of said web with said single stream of air.
Claim 9
Dependent Claim
63 words
Method for applying liquid coating material to a moving web comprising the steps of supporting the moving web on a rotating roll, directing a single stream of air against the supported web, applying a mist of coating material across said web with said single stream of air, and then immediately skimming the coated surface of said web with said single stream of air.
References Cited (Backward Citations)
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US2995469A
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US3229447A
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US3341351A
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US3297472A
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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) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |