US3854220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for continuously drying wet non-hygroscopic surfaces of sheet material
Assignee: Pilot Corp
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Filing: 1973-06-22
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Granted: 1974-12-17
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Expires: 1993-06-22
Abstract
Abstract A method is provided in which a small amount of liquid remaining on a non-hygroscopic surface of a sheet material is transferred onto rotating roll surfaces in the form of a thin liquid film while the sheet material passes through plural pairs of squeeze rolls and then the transferred liquid is vaporized by applying hot air upon the squeeze roll surfaces.
Inventors
- 👤 M Yamaguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:05
CPC Classifications
F; F26; F26B; F26B15/00; F26B15/10; F26B15/12; F26B5/00; F26B5/16; F26B7/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
97 words
An apparatus for continuously drying wet non-hygroscopic surfaces of a sheet material, comprising: a. a housing provided with an inlet and an outlet for said sheet material to be dried, b. plural pairs of squeeze rolls provided in said housing and juxtaposed in the conveying direction of said sheet material, said squeeze rolls being coated with elastic, liquid nonrepellent material, and c. hot air supply pipes each being disposed between the adjacent pairs of squeeze rolls with hot air spouts opening in opposition to the respective squeeze rolls along the substantially entire length of the squeeze rolls.
Claim 2
Independent Claim
97 words
An apparatus for continuously drying wet non-hygroscopic surfaces of a sheet material, comprising: a. a housing provided with an inlet and an outlet for said sheet material to be dried, b. plural pairs of squeeze rolls provided in said housing and juxtaposed in the conveying direction of said sheet material, said squeeze rolls being coated with elastic, liquid nonrepellent material, and c. hot air supply pipes each being disposed between the adjacent pairs of squeeze rolls with hot air spouts opening in opposition to the respective squeeze rolls along the substantially entire length of the squeeze rolls.
Claim 3
Dependent Claim
44 words
An apparatus as claimed in claim 1, further comprising upper and lower subsidiary rolls disposed between the adjacent pairs of said squeeze rolls in contact therewith to form respective closed spaces therebetween; said hot air apply means being disposed outside of said closed spaces.
Claim 4
Dependent Claim
18 words
An apparatus as claimed in claim 1, wherein each of said squeeze rolls is coated with synthetic rubber.
Claim 5
Dependent Claim
26 words
An apparatus as claimed in claim 1, wherein the first pair of squeeze rolls adjacent to said inlet of said housing is coated with fluorine-contained resin.
Claim 6
Independent Claim
103 words
A method of continuously drying wet non-hygroscopic surfaces of a sheet material comprising: a. continuously conveying a sheet material through plural pairs of squeeze rollers juxtaposed in the conveying direction, b. removing squeezed liquid transferred onto the surfaces of said squeeze rolls by applying hot air upon said squeeze roll surfaces, c. transferring the liquid remaining on said surfaces of said squeeze roll surfaces onto respective rotating subsidiary roller surfaces which do not contact the sheet material in the form of a thin liquid film, and d. vaporizing said transferred liquid on the surfaces of said subsidiary roller surfaces by applying hot air.
Claim 7
Independent Claim
103 words
A method of continuously drying wet non-hygroscopic surfaces of a sheet material comprising: a. continuously conveying a sheet material through plural pairs of squeeze rollers juxtaposed in the conveying direction, b. removing squeezed liquid transferred onto the surfaces of said squeeze rolls by applying hot air upon said squeeze roll surfaces, c. transferring the liquid remaining on said surfaces of said squeeze roll surfaces onto respective rotating subsidiary roller surfaces which do not contact the sheet material in the form of a thin liquid film, and d. vaporizing said transferred liquid on the surfaces of said subsidiary roller surfaces by applying hot air.
Claim 8
Independent Claim
111 words
An apparatus for continuously drying wet non-hygroscopic surfaces of a sheet material, comprising: a. a housing provided with an inlet and an outlet for said sheet material to be dried, b. plural pairs of squeeze rolls provided in said housing and juxtaposed in the conveying direction of said sheet material, said squeeze rolls being coated with eLastic, liquid non-repellent material, c. upper and lower subsidiary rolls disposed between the adjacent pairs of said squeeze rolls in contact therewith to form respective closed spaces therebetween; and d. means for applying hot air to the squeeze rolls and to the subsidiary rolls, said hot air applying means being outside of said closed spaces.
Claim 9
Independent Claim
111 words
An apparatus for continuously drying wet non-hygroscopic surfaces of a sheet material, comprising: a. a housing provided with an inlet and an outlet for said sheet material to be dried, b. plural pairs of squeeze rolls provided in said housing and juxtaposed in the conveying direction of said sheet material, said squeeze rolls being coated with eLastic, liquid non-repellent material, c. upper and lower subsidiary rolls disposed between the adjacent pairs of said squeeze rolls in contact therewith to form respective closed spaces therebetween; and d. means for applying hot air to the squeeze rolls and to the subsidiary rolls, said hot air applying means being outside of said closed spaces.
Claim 10
Dependent Claim
18 words
An apparatus as claimed in claim 6 wherein each of said squeeze rolls is coated with synthetic rubber.
Claim 11
Dependent Claim
27 words
An apparatus as claimed in claim 6 wherein the first pair of the squeeze rolls adjacent to said inlet of said housing is coated with fluorine-contained resin.
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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) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |