EP0036632A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Drying system
Assignee: Mead Corp
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Filing: 1981-03-19
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Granted: —
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Expires: 2001-03-19
Abstract
Abstract A drying system and method for removing volatile liquid from a liquid bearing web of material by evaporation includes means for moving the liquid bearing web (10) of material through a drying station (12) and heating means (14) position at the drying station, for applying evaporation energy to the liquid bearing web (10) of material to effect evaporation of the volatile liquid from the web. Electrostatic means (30) is provided for subjecting the web of material to a static electrical field at the drying station (12), whereby the evaporation of volatile liquid from the web is enhanced. Evaporation energy may be applied to the liquid bearing web (10) by bringing a heated surface (14) in contact with the web or by irradiating the web with infrared energy. Alternatively, evaporation energy may be applied to the liquid bearing web (10) by directing heated air against the web.
Inventors
- 👤 Robert R. Rounsley
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 00:08
CPC Classifications
F; F26; F26B; F26B3/00; D; D21; D21F; D21F5/00; D21F5/16; F26B13/00; F26B13/10; F26B13/14; F26B13/145; F26B7/00; F26B7/002
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
112 words
A drying system for removing volatile liquid from a moving liquid bearing web (10) of material by evaporation, comprising: a rotatable heated cylindrical electrically conductive drum (14) in contact with said liquid bearing web (10), means for rotating said drum (14) such that the periphery of said drum (14) moves at the same speed as said web (10), a plurality of electrodes (54) positioned circumferentially around said heated cylindrical drum (14), outwardly from said web (10), and evenly spaced along said web (10), each of said electrodes (54) extending across the width of said web (10), and means for supplying static electrical potentials to selected ones of said plurality of electrodes (54).
Claim 2
Dependent Claim
112 words
A drying system for removing volatile liquid from a moving liquid bearing web (10) of material by evaporation, comprising: a rotatable heated cylindrical electrically conductive drum (14) in contact with said liquid bearing web (10), means for rotating said drum (14) such that the periphery of said drum (14) moves at the same speed as said web (10), a plurality of electrodes (54) positioned circumferentially around said heated cylindrical drum (14), outwardly from said web (10), and evenly spaced along said web (10), each of said electrodes (54) extending across the width of said web (10), and means for supplying static electrical potentials to selected ones of said plurality of electrodes (54).
Claim 3
Dependent Claim
99 words
The drying system of claim 1 further comprising frame means (52) including a pair of non-conductive supports (50) extending circumferentially around said drum (14), said supports (50) being spaced apart in a direction parallel to the axis of rotation of said drum (14) by a distance at least as great as the width of said liquid bearing web (10), and in which each of said plurality of electrodes comprises an electrode wire (54) extending between said supports (50) and connected to said means (66, 70) for supplying static electrical potentials to selected ones of said plurality of electrodes (54).
Claim 4
Dependent Claim
27 words
The drying system of claim 2 in which said frame means (52) further comprises means (66, 68) for tensioning said electrode wires (54) across said supports (50).
Claim 5
Dependent Claim
30 words
The drying system of anyone of claims 1 to 3, further comprising belt means (32) contacting said liquid bearing web (10) and urging said web (10) against said drum (14).
Claim 6
Dependent Claim
24 words
The drying system of claim 4, further comprising means for moving said belt means (32) at substantially the same speed as said web (10).
Claim 7
Dependent Claim
99 words
A drying system for removing volatile liquid from a moving liquid bearing web (10) of material by evaporation, comprising: means for moving a liquid bearing web of material through a drying station (12'), heating means, including a source of radiant heat adjacent said web (10) at said drying station (12'), for applying evaporation energy to said liquid bearing web (10) of material to effect evaporation of said liquid from said web (10), and electrosatic means for subjecting said web (10) of material to a static electrical field, whereby the evaporation of volatile liquid from said web (10) is enhanced.
Claim 8
Dependent Claim
99 words
A drying system for removing volatile liquid from a moving liquid bearing web (10) of material by evaporation, comprising: means for moving a liquid bearing web of material through a drying station (12'), heating means, including a source of radiant heat adjacent said web (10) at said drying station (12'), for applying evaporation energy to said liquid bearing web (10) of material to effect evaporation of said liquid from said web (10), and electrosatic means for subjecting said web (10) of material to a static electrical field, whereby the evaporation of volatile liquid from said web (10) is enhanced.
Claim 9
Dependent Claim
30 words
The drying system of claim 6 in which said source of radiant heat comprises a plurality of infrared burners (100) positioned above said web (10) at said drying station (12').
Claim 10
Dependent Claim
45 words
The drying system of claim 6 or 7 in which said electrostatic means comprises a plurality of electrodes (102) at said drying station (12') positioned beneath said web (10), and means for supplying static electrical potentials to selected ones of said plurality of electrodes (102).
Claim 11
Dependent Claim
55 words
The drying system of claim 8 in which each of said plurality of electrodes comprises an elongated electrode member (102) extending across the width of said web (10) beneath said web (10), each electrode member (102) being connected to said means for supplying static electrical potentials to selected ones of said plurality of electrodes (102).
Claim 12
Dependent Claim
101 words
A drying system for removing volatile liquid from a liquid bearing web (10) of material by evaporation, comprises: means for moving a liquid bearing web (10) of material through a drying station (12"), heating means (120), including means (126) for directing heated air against said web (10) at said drying station (12"), for applying evaporation energy to said liquid bearing web (10) of material to effect evaporation of said liquid from said web (10), and electrostatic means for subjecting said web (10) of material to a static electrical field, whereby the evaporation of volatile liquid from said web (10) is enhanced.
Claim 13
Dependent Claim
101 words
A drying system for removing volatile liquid from a liquid bearing web (10) of material by evaporation, comprises: means for moving a liquid bearing web (10) of material through a drying station (12"), heating means (120), including means (126) for directing heated air against said web (10) at said drying station (12"), for applying evaporation energy to said liquid bearing web (10) of material to effect evaporation of said liquid from said web (10), and electrostatic means for subjecting said web (10) of material to a static electrical field, whereby the evaporation of volatile liquid from said web (10) is enhanced.
Claim 14
Dependent Claim
65 words
L1. The drying system of claim 10 in which said electrostatic means comprises: a plurality of electrodes (124) positioned at said drying station (112") along said web (10) on the opposite side of said web (10) from said means (126) for directing heated air against said web (10), and means for supplying a static electrical potential to selected ones of said plurality of electrodes (124).
Claim 15
Dependent Claim
36 words
The drying system of claim 11 in which each of said plurality of electrodes (124) comprises a sheet of electrically conductive material extending across the width of said web (10) and providing a substantial electrode area.
Claim 16
Dependent Claim
63 words
The drying system of anyone of claims 1, 8, 11 or 12 in which said means for supplying static electrical potentials to selected ones of said plurality of electrodes (54; 102; 124) comprises means for supplying a first static electrical potential to a number of said electrodes (54; 102; 124) and for supplying a second static electrical potential to others of said electrodes.
Claim 17
Dependent Claim
83 words
The drying system of claim 13 in which said means for supplying a first static electrical potential to a number of said electrodes (54; 102; 124) supplies said first static electrical potential to alternate electrodes (54; 102; 124) along said web (10) of material and in which said means for supplying a second static electrical potential to others of said electrodes (54; 102; 124) supplies said second static electrical potential to electrodes (54; 102; 124) positioned intermediate said alternate electrodes (54; 102; 124).
Claim 18
Independent Claim
76 words
A method for removing volatile liquid from a liquid bearing web (10) of material by evaporation, comprising the steps of: (a) moving a liquid bearing web (10) of material through a drying station (12'), (b) heating said liquid bearing web (10) by irradiating said web (10) with radiant energy, and (c) subjecting said liquid bearing web (10) of material to a static electrical field, whereby evaporation of said volatile liquid from said web (10) is enhanced.
Claim 19
Independent Claim
76 words
A method for removing volatile liquid from a liquid bearing web (10) of material by evaporation, comprising the steps of: (a) moving a liquid bearing web (10) of material through a drying station (12'), (b) heating said liquid bearing web (10) by irradiating said web (10) with radiant energy, and (c) subjecting said liquid bearing web (10) of material to a static electrical field, whereby evaporation of said volatile liquid from said web (10) is enhanced.
Claim 20
Independent Claim
76 words
A method for removing volatile liquid from a liquid bearing web (10) of material by evaporation, comprising the steps of: (a) moving a liquid bearing web (10) of material through a drying station (12"), (b) directing heated air against said liquid bearing web (10) to effect evaporation of said liquid, and (c) subjecting said liquid bearing web (10) of material to a static electrical field, whereby evaporation of said liquid from said web (10) is enhanced.
Claim 21
Independent Claim
76 words
A method for removing volatile liquid from a liquid bearing web (10) of material by evaporation, comprising the steps of: (a) moving a liquid bearing web (10) of material through a drying station (12"), (b) directing heated air against said liquid bearing web (10) to effect evaporation of said liquid, and (c) subjecting said liquid bearing web (10) of material to a static electrical field, whereby evaporation of said liquid from said web (10) is enhanced.
Claim 22
Independent Claim
41 words
The method of claims 15 or 16 in which said step of subjecting said liquid bearing web (10) of material to a static electrical field includes the step of subjecting said liquid bearing web (10) to a nonuniform static electrical field.
References Cited (Backward Citations)
No citation records indexed.
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