GB727602A - Improvements in or relating to web coating apparatus - Google Patents
Improvements in or relating to web coating apparatusInfo
- Publication number
- GB727602A GB727602A GB22407/52A GB2240752A GB727602A GB 727602 A GB727602 A GB 727602A GB 22407/52 A GB22407/52 A GB 22407/52A GB 2240752 A GB2240752 A GB 2240752A GB 727602 A GB727602 A GB 727602A
- Authority
- GB
- United Kingdom
- Prior art keywords
- air
- slot
- web
- plate
- coating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
- D21H25/08—Rearranging applied substances, e.g. metering, smoothing; Removing excess material
- D21H25/16—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with a blast of vapour or gas, e.g. air knife
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H5/00—Special paper or cardboard not otherwise provided for
- D21H5/0005—Processes or apparatus specially adapted for applying liquids or other fluent materials to finished paper or board, e.g. impregnating, coating
- D21H5/006—Controlling or regulating
- D21H5/0062—Regulating the amount or the distribution, e.g. smoothing, of essentially fluent material already applied to the paper; Recirculating excess coating material applied to paper
- D21H5/007—Regulating the amount or the distribution, e.g. smoothing, of essentially fluent material already applied to the paper; Recirculating excess coating material applied to paper with a blast of gas or vapour, e.g. air knife
Landscapes
- Coating Apparatus (AREA)
- Paper (AREA)
Abstract
727,602. Coating webs. WALDRON CORPORATION, J. Sept. 5, 1952 [Sept. 7, 1951], No. 22407/52. Class 140. A web W, e.g. of paper, is coated with liquid coating composition, e.g. by a roller 14, and the surplus coating is removed by an air jet from a nozzle 24 which has a slot defined by a pair of converging plates 50 and 52, one of which carries a baffle plate 26 which forms a second slot adjacent the main slot through which a secondary current of air is induced by the flow of high-velocity air through the main slot. The width of both slots is adjustable, and the inner surface of each plate 50 and 52 is convex with the curvature increasing towards the lip. A plate 32 deflects the air stream after it has acted on the web, and a drip pan 34 catches coating material removed by the air blast. The nozzle is pivoted at each end so that it can rock about an axis roughly coinciding with the line of impact of the main air jet, and also about the axis of tubular manifold 44. Adjustable stops limit the amount of rocking movement. Specification 647,886 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US727602XA | 1951-09-07 | 1951-09-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB727602A true GB727602A (en) | 1955-04-06 |
Family
ID=22109577
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB22407/52A Expired GB727602A (en) | 1951-09-07 | 1952-09-05 | Improvements in or relating to web coating apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB727602A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2981224A (en) * | 1958-01-13 | 1961-04-25 | Black Clawson Co | Adjustable mounting for air doctor |
DE10245074A1 (en) * | 2002-09-27 | 2004-04-01 | Voith Paper Patent Gmbh | Doctor unit wipes off or equalises coating dye applied on running paper or board and features counter pressure unit, which exerts pressure on doctor element at height of pressure gap |
-
1952
- 1952-09-05 GB GB22407/52A patent/GB727602A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2981224A (en) * | 1958-01-13 | 1961-04-25 | Black Clawson Co | Adjustable mounting for air doctor |
DE10245074A1 (en) * | 2002-09-27 | 2004-04-01 | Voith Paper Patent Gmbh | Doctor unit wipes off or equalises coating dye applied on running paper or board and features counter pressure unit, which exerts pressure on doctor element at height of pressure gap |
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