GB1110222A - Coating apparatus and method - Google Patents

Coating apparatus and method

Info

Publication number
GB1110222A
GB1110222A GB16638/65A GB1663865A GB1110222A GB 1110222 A GB1110222 A GB 1110222A GB 16638/65 A GB16638/65 A GB 16638/65A GB 1663865 A GB1663865 A GB 1663865A GB 1110222 A GB1110222 A GB 1110222A
Authority
GB
United Kingdom
Prior art keywords
web
coating
liquid
trough
blade
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
Application number
GB16638/65A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of GB1110222A publication Critical patent/GB1110222A/en
Expired legal-status Critical Current

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
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/32—Addition to the formed paper by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper
    • D21H23/40—Addition to the formed paper by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper only one side of the paper being in contact with the material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C3/00—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material
    • B05C3/18—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material only one side of the work coming into contact with the liquid or other fluent material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/007—Slide-hopper coaters, i.e. apparatus in which the liquid or other fluent material flows freely on an inclined surface before contacting the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B05C9/06—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying two different liquids or other fluent materials, or the same liquid or other fluent material twice, to the same side of the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/18—Processes for applying liquids or other fluent materials performed by dipping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/26—Processes for applying liquids or other fluent materials performed by applying the liquid or other fluent material from an outlet device in contact with, or almost in contact with, the surface
    • 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
    • D21H5/0012—Processes or apparatus specially adapted for applying liquids or other fluent materials to finished paper or board, e.g. impregnating, coating by bringing paper into contact with an excess of fluids, the paper carrying away only a part of the fluid material, e.g. by passing through liquids, gases or vapours
    • D21H5/0015—Processes or apparatus specially adapted for applying liquids or other fluent materials to finished paper or board, e.g. impregnating, coating by bringing paper into contact with an excess of fluids, the paper carrying away only a part of the fluid material, e.g. by passing through liquids, gases or vapours only one side of the paper being in contact with the treating medium, e.g. paper carried by support
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/74—Applying photosensitive compositions to the base; Drying processes therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2252/00—Sheets
    • B05D2252/02—Sheets of indefinite length
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
    • Y10S430/136—Coating process making radiation sensitive element

Abstract

1,110,222. Coating apparatus. MINNESOTA MINING & MANUFACTURING CO. 20 April, 1965 [1 May, 1964], No. 16638/65. Heading D1L. Coating apparatus comprises a trough 21, a guiding roll 11 passing the web to be coated into the trough at 15 and out in an upward direction at 17, and a blade 25 located adjacent the point at which the web leaves the coating liquid and spaced from the web so that a meniscus forms between the blade and the web. One side of the trough 21 is open to the atmosphere as at 23, the other communicates with a reduced pressure chamber 31 by means of a slot 29 which extends the full width of the web to be coated. The reduced pressure in the chamber 31 is adjusted so that the coating liquid is drawn up at least to the height of the bottom of the blade 25 and preferably a little higher, thus creating a hydrostatic head indicated at 45. Coating liquid is fed into the trough 21 through a conduit 35 at the rate at which it is desired to be applied to the web, and is maintained at least at the level of the bottom of the roll 11, at this stage the maximum hydrostatic head is present. The web is passed through the coating liquid and a meniscus is formed between the web and the blade 25, a thin coating being left on the, web as it passes upwards from the meniscus. By virtue of the maximum hydrostatic head being present and thus a maximum downward force being exerted on the meniscus, less coating is applied to the web than intended, and since the rate at which liquid is taken by the web is less than the rate at which liquid is supplied, the level of liquid in the trough rises to say 43. The hydrostatic head and thus the downward force on the meniscus is reduced and consequently more coating liquid stays on the web. Once the point of equilibrium is reached, the apparatus is self-metering so the thickness of coating on the web is automatically adjusted to the rate of supply of liquid to the coating trough. In a further embodiment, Fig. 2 (not shown), a second coating is applied from a reservoir (57) by flowing it, under gravity, over the top surface of the blade (25). The apparatus is particularly applicable to the coating of films and paper with photographic emulsions &c.
GB16638/65A 1964-05-01 1965-04-20 Coating apparatus and method Expired GB1110222A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US364140A US3348964A (en) 1964-05-01 1964-05-01 Immersion coating of strip material

Publications (1)

Publication Number Publication Date
GB1110222A true GB1110222A (en) 1968-04-18

Family

ID=23433187

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16638/65A Expired GB1110222A (en) 1964-05-01 1965-04-20 Coating apparatus and method

Country Status (3)

Country Link
US (1) US3348964A (en)
BE (1) BE662815A (en)
GB (1) GB1110222A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112221832A (en) * 2020-09-30 2021-01-15 张家港扬子江冷轧板有限公司 Cooperative roller coater and coating method

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1159208A (en) * 1965-11-04 1969-07-23 Fuji Photo Film Co Ltd Process and Apparatus for Coating Web
US3663292A (en) * 1969-02-10 1972-05-16 Agfa Gevaert Ag Process for coating strip-form substrates
US3645773A (en) * 1969-02-10 1972-02-29 Agfa Gevaert Ag Process for coating substrates in strip-form with photographic emulsion
US3916043A (en) * 1971-11-15 1975-10-28 Eastman Kodak Co Method of coating a spliced web
WO1987007153A1 (en) * 1986-05-29 1987-12-03 Interface Biomedical Laboratories Corporation Composite hemostatic article including a hemostatic agent onlay and methods for preparing the same
US9827401B2 (en) 2012-06-01 2017-11-28 Surmodics, Inc. Apparatus and methods for coating medical devices
US11090468B2 (en) * 2012-10-25 2021-08-17 Surmodics, Inc. Apparatus and methods for coating medical devices
US11628466B2 (en) 2018-11-29 2023-04-18 Surmodics, Inc. Apparatus and methods for coating medical devices
US11819590B2 (en) 2019-05-13 2023-11-21 Surmodics, Inc. Apparatus and methods for coating medical devices

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2257373A (en) * 1938-02-02 1941-09-30 K C M Company Method and apparatus for coating sheet material
BE513714A (en) * 1951-08-23 1900-01-01
BE570270A (en) * 1957-08-21

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112221832A (en) * 2020-09-30 2021-01-15 张家港扬子江冷轧板有限公司 Cooperative roller coater and coating method

Also Published As

Publication number Publication date
BE662815A (en) 1965-10-21
US3348964A (en) 1967-10-24

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