US3928678A - Method and apparatus for coating a substrate - Google Patents

Method and apparatus for coating a substrate Download PDF

Info

Publication number
US3928678A
US3928678A US326621A US32662173A US3928678A US 3928678 A US3928678 A US 3928678A US 326621 A US326621 A US 326621A US 32662173 A US32662173 A US 32662173A US 3928678 A US3928678 A US 3928678A
Authority
US
United States
Prior art keywords
coating
substrate
layers
coating composition
liquid
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 - Lifetime
Application number
US326621A
Other languages
English (en)
Inventor
Brian W Jackson
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak 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 Eastman Kodak Co filed Critical Eastman Kodak Co
Priority to US326621A priority Critical patent/US3928678A/en
Priority to IT19591/74A priority patent/IT1007579B/it
Priority to FR7402171A priority patent/FR2215269B1/fr
Priority to AR252030A priority patent/AR215829A1/es
Priority to GB333674A priority patent/GB1458852A/en
Priority to DE2403314A priority patent/DE2403314C3/de
Priority to CH107774A priority patent/CH594907A5/xx
Priority to JP49010885A priority patent/JPS5139980B2/ja
Priority to BE140209A priority patent/BE810193A/xx
Priority to US05/588,260 priority patent/US3993019A/en
Application granted granted Critical
Publication of US3928678A publication Critical patent/US3928678A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • 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
    • 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
    • G03C2001/7411—Beads or bead coating
    • 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
    • G03C2001/7466—Geometry and shape of application devices
    • 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

Definitions

  • Each of the respective compositions flows by gravity as a layer down its respective inclined surface, whereby the layer becomes smooth and of uniform thickness.
  • the slide surfaces are arranged so that the layers flow on top of one another.
  • the stratified layers flow into a bead or puddle which bridges a small generally horizontal gap between an edge of the coating hopper and the upwardly moving substrate.
  • the substrate as it is advanced into contact with the bead, simultaneously picks up all the layers, which layers deposit on the substrate as a composite coating of substantially distinct superimposed layers.
  • a particularly noticeable fault is the appearance of longitudinal striations which render the coated web unacceptable as a commercial tageous to create a pressure differential between the exposed surfaces of the bead, such as by the creation of a vacuum on the trailing surface of the bead to eliminate excessive vibration and/or rupture of the bead.
  • the range of vacuum levels which may be used is, of course, limited as, if it is too great, the high pressure differential across the bead may also cause the bead to be disturbed and/or ruptured.
  • a further problem with the use of the coating hopper described in the aforementioned Mercier et al. patent is that particles in the liquid coating composition may adhere to the hopper at the lip edge thereof and cause 2 undesirable streaks to be formed in the coating.
  • An apparatus and method which reduces or minimizes the deleterious effects of such particles on coatings represents a significant contribution to the state of the art.
  • a coating hopper is provided with a downwardly inclined slide surface upon which one or more layers of liquid coating composition(s) may be made to flow so the layers become smooth and of uniform thickness.
  • the hopper includes a lip which extends towards the substrate at an obtuse angle relative to the slide surface and the layer(s) of coating composition(s) may flow on this lip before being fed into a bridge of coating solution,
  • FIG. 1 is a side view, partly in section, showing a coating apparatus including a multiple layer slide hopper as known in the prior art
  • FIG. 2 is a close-up side view of an improved coating apparatus made in accordance with the invention.
  • FIG. 3 is a view similar to FIG. 2 showing another embodiment of the invention.
  • a substrate such as web W
  • the web may be paper, metal or plastic film and may include one or more substantially dry coatings previously applied thereto.
  • the hopper 10 is shown as being adapted to coat two layers simultaneously onto the web W although it will be appreciated that slide hoppers are known in the prior art to coat one or more than two layers and the invention is also applicable to such hoppers.
  • Metering pumps, P and P are coupled to respective sources of fluid coating compositions and feed the compositions 16,23 at desired rates into respective cavities 11,19 formed in the interior of hopper 10.
  • the compositions 16,23 are each then forced to flow generally vertically as a ribbon through narrow discharge slots 14,21 respectively, each of which 'slots at one end extends into the interior of the hopper to a respective cavity 11,19 and at the other end exits onto the upper end of a downwardly inclined planar slide surface 15,22 respectively.
  • the compositions 16,23 are each thus extruded in the form of a liquid layer onto their respective slide surface.
  • the discharge slots 14,21 are each defined by a pair of opposed spaced-apart parallel planar surfaces 14',l4"; 21, 21" respectively and are arranged so that an exit of the lowermost slot 14 is spaced above an edge 27 of the coating hopper 10.
  • the upper layer 23 flows upon the lower layer 16, whereupon the two layers flow together along the surface 15 in stratified relationship into a bead at 17.
  • the bead 17 spans a generallyhorizontal gap between the edge 27 and the upwardly moving web W.
  • a web or substrate is generally upwardly moving at any point where at such point its vertical component of velocity is greater in magnitude than its horizontal component of velocity.
  • suction or a vacuum may be employed on the trailing surface 24 of the head to establish a pressure differential between the exposed surfaces of the bead.
  • the suction may be provided by a chamber 25 which is coupled to a vacuum pump 26 to exhaust air from the chamber 25.
  • FIG. 2 a portion of an improved slide hopper 29 made in accordance with the present invention is shown.
  • the slide hopper 29 is similar in most respects to the hopper shown in FIG. 1, but differs in that it includes an upturned lip 31 which extends at an obtuse angle from the lower end of the lowermost slide surface 32 toward the surface of a generally upwardly moving substrate W, e.g., the web, being coated.
  • the lip 31 is preferably generally planar and of the same transverse width as the planar slide 32 and terminates in a transverse edge 34, defined by the planar land of the lip 31 and side face 39 of the hopper.
  • Edge 34 is spaced generally horizontally from the coating roller 33 a distance slightly greater than the thickness of the web W, to be coated so as to establish in operation of the hopper a bead or puddle 37 of liquid coating compositions.
  • the gap between edge 34 and the surface of the web being coated is between about 0.005 inches (0.13 mm) to about 0.03 inches (076mm).
  • the coating solutions flow down the lowermost slide surface 32 with the uppermost layer 35 on top of the lowermost layer 36.
  • the slide surfaces 30,32 are each inclined relative to the horizontal at a desired angle that is preferably greater than ten degrees and less than 45 depending upon the properties of the composition(s) being coated.
  • the lip 31 is of lesser inclination to the horizontal than that of the slide surfaces 30,32 99 the layers 35,36 flow over the lip with reduced speed but increased thickness (depth).
  • the increased thickness of the layers on the upturned lip 31 is advantageous in that the effects of any particles that happen to lodge at edge 34 are minimized by a dilution of such effects by the thicker layers on the upturned lip, i.e., a particle of a certain size that is lodged on the edge 34 will tend to create greater disturbances in thin (shallow) layers as opposed to thick (deep) layers as the liquid compositions flow past the particle.
  • the lip 31 is directed in a generally horizontal direction, and is preferably horizontal although it may be inclined relative to the horizontal in the direction of fluid flow within the preferred range of :5 degrees.
  • the length of the lip 31 in the direction of liquid flow is advantageously in the range of about 0.025 to 0.080 inches (0.06cm to 0.2lcm), and is preferably about 0.040 inches (010cm).
  • Such dimensions are advantageous in the coating of photographic compositions wherein emulsion coatings might vary between a dry thickness of 0.0001 0.001 inches and protective layers separating such emulsion layers might be as thin as one micron.
  • the point of application of the bead to the web W be' within a preferred (acute) angular range of application points and such preferred range is from about a point on the web that is located at about 40 below the horizontal radius of the coating roller 33 vertically to about 30 above said horizontal radius.
  • the generally horizontal gap is advantageous in that it allows gravity to act on the suspending bridge of coating solution and facilitates the formation of the bead.
  • the introduction of the coating compositions into the bead along the generally horizontal plane of the lip 31 apparently is able to reduce the force of the liquid rushing into the bead or otherwise increase the stability of the bead so that increased suction levels may be used on the bead at high coating speeds without encountering bead disturbance which produces unsatisfactory coatings. Furthermore, even at the same suction levels, increased coating speeds may be obtained using the apparatus and method of the present invention over that shown in the Mercier et al. patent.
  • two superimposed layers of gelatin solution may be coated using a coating hopper of the prior art as shown in FIG. 1 and embodying the invention as shown in FIG. 2.
  • the lower gelatin solution may have a concentration of 3.85% by weight and a wet laydown of 1.125 lbs/ square feet.
  • the upper layer may have a concentration of 6.6% by weight and a wet laydown of 0.303 lbs/100 square feet. Suction may be maintained across the head during coating with a gap between the lip and the web of about 0.008 inch.
  • the transverse edge 34 may be rounded or chamfered to prevent nicks or other damage to the otherwise sharp edge.
  • a coating hopper with such a chamfered edge 34" is shown in FIG. 3 wherein like numerals refer to parts similar to that shown and described for FIG. 2.
  • the lip 31 in the embodiment shown in FIG. 3 should be of the same dimension and angular orientation as for that described for FIG. 2.
  • a coating hopper which includes such a chamfered edge 34" is advantageous in that with the use of such a hopper there is substantially eliminated the formation of streaks in coating, which streaks may be attributed to imperfections in a sharp transverse lip edge.
  • a single layer of liquid coating composition may be made to flow down an inclined slide surface, and then along an upturned lip before being introduced into a bead, which bead bridges a generally horizontal gap between the hopper and a generally upwardly moving web.
  • a single layer slide hopper the preferred degree of inclination of the slide surface and that of the lip and the preferred length of the lip are within the ranges referred to for the double layer slide hopper.
  • the invention may be embodied as a slide hopper having a curved slide surface(s), such as of the type shown in FIG. 3 of U.S. Pat. No. 2,681,294.
  • coating hoppers havingplanar slide surfaces are preferred, as they are substantially easier and less expensive to machine.
  • the invention is particularly applicable to a multiple layer slide hopper of the extrusion-slide type, as disclosed in U.S. Pat. No. 2,761,417, which may also have a generally upturned lip formed on the slide surface.
  • a coating hopper is described and claimed in copending commonly assigned US. application Ser. No. 327,048 simultaneously filed herewith in the name of Jackson et al. and under the title Method and Apparatus For Coating a Multiple Number of Layers onto a Substrate.
  • the method and apparatus of this invention can be utilized to coat any material or mixture of materials which can be put in liquid form and bead coated, for example, in the form of a solution, a dispersion, or a suspension.
  • the coating composition is an aqueous composition but other liquid vehicles of either an organic or inorganic nature, can also be utilized and are fully within the contemplation of this invention.
  • the respective layers can be formed of the same or different liquid coating compositions and these coating compositions can be either miscible or immiscible with one
  • the method and apparatus of this invention are especially useful in the photographic art for manufacture of multilayer photographic elements, i.e., elements comprised of a support coated with a plurality of superimposed layers of photographic coating composition.
  • the number of individual layers may range from two to as many as ten or more.
  • the liquid coating compositionsutilized are of relatively low viscosity, i.e., viscosities from as low as about 2 centipoise to as high as about 150 centipoise, or somewhat higher, and most commonly in the range from about 5 to about 100 centipoise.
  • the method and apparatus of this invention are suitable for use with any liquid photographic coating composition and can be employed with any type of photographic support and it is, accordingly, intended to include all such coating compositions and supports as are utilized in the photographic art within the scope of these terms, as employed herein and in the appended claims.
  • photographic normally refers to a radiation sensitive material, but not all of the layers presently applied to a support in the manufacture of photographic elements are, in themselves, radiation sensitive.
  • subbing layers, pelloid protective layers, filter layers, antihalation layers, etc. are often applied separately and/or in combination and these particular layers are not radiation sensitive.
  • the present invention relates also to the application of such layers, and the term photographic coating composition, as employed herein, is intended to include the compositions from which such layers are formed.
  • the invention includes within its scope all radiation sensitive materials, including electrophotographic materials and materials sensitive to invisible radiation as well as those sensitive to visible radiation. While, as mentioned hereinbefore, the layers are generally coated from aqueous media, the invention is not so limited since other liquid vehicles are known in the manufacture of photographic elements and the invention is also applicable to and useful in coating from such liquid vehicles.
  • the photographic layers coated according to the method of this invention can contain light-sensitive materials, such as silver halides, zinc oxide, titanium dioxide, diazonium salts, light-sensitive dyes, etc., as well as other ingredients known to the art for use in photographic layers, for example, chemical sensitizers, development modifiers, antifoggants and stabilizers, developing agents, hardeners, plasticizers and lubricants, coating aids, matting agents, antistatic agents, brighteners, spectral sensitizers, absorbing and filter dyes, color materials, etc. Specific examples of these ingredients may be found in the publication entitled Product Licensing Index, Volume 92, December 1971, Publication 9232, pages 107 through 1 10, and in the publications cited therein.
  • the photographic layers can also contain various colloids either alone or in combination as vehicles.
  • Suitable hydrophilic vehicle materials include both naturally-occurring substances, such as proteins, for example, gelatin, gelatin derivatives, etc., and synthetic polymeric substances, such as water soluble polyvinyl compounds. Further examples of suitable vehicles are disclosed in the aforecited publication.
  • Typical flexible supports include film base, e.g., cellulose acetate and poly(ethylene terephthalate), paper, metal, etc.
  • film base e.g., cellulose acetate and poly(ethylene terephthalate), paper, metal, etc.
  • Other supports which may be used are also disclosed in the aforecited publication.
  • the invention provides an improved apparatus and method which may be used to coat a web at increased speeds. It will be further appreciated that such apparatus embodying the invention claimed herein may be made relatively inexpensively by modifying coating hoppers of the prior art.
  • a method of coating a liquid coating composition onto a web substrate from a coating hopper having a downwardly inclined slide comprises the steps of:
  • liquid coating composition is a photographic coating composition.
  • a method of simultaneously coating a plurality of distinct superposed layers of liquid coating compositions onto a web substrate from a coating hopper of the type having a downwardly inclined slide surface comprises the steps of:

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
US326621A 1973-01-26 1973-01-26 Method and apparatus for coating a substrate Expired - Lifetime US3928678A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
US326621A US3928678A (en) 1973-01-26 1973-01-26 Method and apparatus for coating a substrate
IT19591/74A IT1007579B (it) 1973-01-26 1974-01-18 Apparecchio e metodo per rivesti menti
AR252030A AR215829A1 (es) 1973-01-26 1974-01-23 Aparato para aplicar como recubrimiento por lo menos una composicion liquida de recubrimiento sobre una superficie de un substrato
FR7402171A FR2215269B1 (enrdf_load_stackoverflow) 1973-01-26 1974-01-23
GB333674A GB1458852A (en) 1973-01-26 1974-01-24 Coating apparatus and method
DE2403314A DE2403314C3 (de) 1973-01-26 1974-01-24 Vorrichtung zum Auftragen einer oder mehrerer Schichten aus flüssigem Beschichtungsmaterial auf die Oberfläche eines Guts, insbesondere eines Bandes
CH107774A CH594907A5 (enrdf_load_stackoverflow) 1973-01-26 1974-01-25
JP49010885A JPS5139980B2 (enrdf_load_stackoverflow) 1973-01-26 1974-01-25
BE140209A BE810193A (fr) 1973-01-26 1974-01-25 Procede et tremie d'enduction d'un support tel qu'un support deproduit photographique
US05/588,260 US3993019A (en) 1973-01-26 1975-06-19 Apparatus for coating a substrate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US326621A US3928678A (en) 1973-01-26 1973-01-26 Method and apparatus for coating a substrate

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US05/588,260 Division US3993019A (en) 1973-01-26 1975-06-19 Apparatus for coating a substrate

Publications (1)

Publication Number Publication Date
US3928678A true US3928678A (en) 1975-12-23

Family

ID=23272993

Family Applications (1)

Application Number Title Priority Date Filing Date
US326621A Expired - Lifetime US3928678A (en) 1973-01-26 1973-01-26 Method and apparatus for coating a substrate

Country Status (9)

Country Link
US (1) US3928678A (enrdf_load_stackoverflow)
JP (1) JPS5139980B2 (enrdf_load_stackoverflow)
AR (1) AR215829A1 (enrdf_load_stackoverflow)
BE (1) BE810193A (enrdf_load_stackoverflow)
CH (1) CH594907A5 (enrdf_load_stackoverflow)
DE (1) DE2403314C3 (enrdf_load_stackoverflow)
FR (1) FR2215269B1 (enrdf_load_stackoverflow)
GB (1) GB1458852A (enrdf_load_stackoverflow)
IT (1) IT1007579B (enrdf_load_stackoverflow)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4113903A (en) * 1977-05-27 1978-09-12 Polaroid Corporation Method of multilayer coating
US4143190A (en) * 1977-01-27 1979-03-06 Polaroid Corporation Method and apparatus for coating webs
DE2951515A1 (de) * 1978-12-25 1980-07-10 Fuji Photo Film Co Ltd Beschichtungsvorrichtung
US4241689A (en) * 1977-03-26 1980-12-30 Konishiroku Photo Industry Co., Ltd. Coating apparatus
EP0021749A1 (en) * 1979-06-15 1981-01-07 EASTMAN KODAK COMPANY (a New Jersey corporation) Method of manufacture of flexible photographic materials having anticurl and antistatic layers
US4283443A (en) * 1977-01-27 1981-08-11 Polaroid Corporation Method and apparatus for coating webs
US4443504A (en) * 1982-06-09 1984-04-17 E. I. Du Pont De Nemours & Company Coating method
US4508764A (en) * 1982-12-14 1985-04-02 E. I. Du Pont De Nemours And Company Coating process employs surfactants
US5097792A (en) * 1989-03-20 1992-03-24 Konica Corporation Coating apparatus
US5332440A (en) * 1992-01-21 1994-07-26 E. I. Du Pont De Nemours And Company Coating lip geometry for slide bead coating
US5380365A (en) * 1992-01-21 1995-01-10 E. I. Du Pont De Nemours And Company Lip surface geometry for slide bead coating
US5656417A (en) * 1990-01-25 1997-08-12 Fuji Photo Film Co., Ltd. Process for preparing color light-sensitive material by multi layer co-coating
US5728430A (en) * 1995-06-07 1998-03-17 Avery Dennison Corporation Method for multilayer coating using pressure gradient regulation
US5962075A (en) * 1995-06-07 1999-10-05 Avery Dennison Method of multilayer die coating using viscosity adjustment techniques
US20030124254A1 (en) * 2001-12-27 2003-07-03 Rexam Image Products, Inc. Wet on wet process for producing films
US6824828B2 (en) 1995-06-07 2004-11-30 Avery Dennison Corporation Method for forming multilayer release liners

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58907B2 (ja) * 1979-06-13 1983-01-08 コニカ株式会社 基体の塗布方法およびホッパ−装置
JPH04136844A (ja) * 1990-09-28 1992-05-11 Fuji Photo Film Co Ltd ハロゲン化銀カラー写真感光材料
JP3378651B2 (ja) 1994-06-08 2003-02-17 富士写真フイルム株式会社 塗布装置及び方法
DE102005042289A1 (de) * 2005-09-06 2007-03-15 Fleissner Gmbh Vorrichtung zum Aufbringen einer über eine große Arbeitsbreite gleichmäßig dicken Flüssigkeitsschicht auf eine Warenbahn
CN113634403A (zh) * 2021-09-23 2021-11-12 德州章源喷涂技术有限公司 新型涂布用挤压头及喷涂方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3413143A (en) * 1963-12-10 1968-11-26 Ilford Ltd High speed coating apparatus
US3526528A (en) * 1965-10-28 1970-09-01 Fuji Photo Film Co Ltd Multiple doctor coating process and apparatus
US3531314A (en) * 1968-05-13 1970-09-29 Eastman Kodak Co Treatment of polymer surfaces for coating with photographic layers
US3607345A (en) * 1958-04-26 1971-09-21 Eastman Kodak Co Process for coating photographic emulsion layers
US3627564A (en) * 1970-07-16 1971-12-14 Eastman Kodak Co Method for coating a continuous web
US3640752A (en) * 1966-05-02 1972-02-08 Fuji Photo Film Co Ltd Coating method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3607345A (en) * 1958-04-26 1971-09-21 Eastman Kodak Co Process for coating photographic emulsion layers
US3413143A (en) * 1963-12-10 1968-11-26 Ilford Ltd High speed coating apparatus
US3526528A (en) * 1965-10-28 1970-09-01 Fuji Photo Film Co Ltd Multiple doctor coating process and apparatus
US3640752A (en) * 1966-05-02 1972-02-08 Fuji Photo Film Co Ltd Coating method
US3531314A (en) * 1968-05-13 1970-09-29 Eastman Kodak Co Treatment of polymer surfaces for coating with photographic layers
US3627564A (en) * 1970-07-16 1971-12-14 Eastman Kodak Co Method for coating a continuous web

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4143190A (en) * 1977-01-27 1979-03-06 Polaroid Corporation Method and apparatus for coating webs
US4283443A (en) * 1977-01-27 1981-08-11 Polaroid Corporation Method and apparatus for coating webs
US4241689A (en) * 1977-03-26 1980-12-30 Konishiroku Photo Industry Co., Ltd. Coating apparatus
US4113903A (en) * 1977-05-27 1978-09-12 Polaroid Corporation Method of multilayer coating
DE2951515A1 (de) * 1978-12-25 1980-07-10 Fuji Photo Film Co Ltd Beschichtungsvorrichtung
US4299188A (en) * 1978-12-25 1981-11-10 Fuji Photo Film Co., Ltd. Coating apparatus
EP0021749A1 (en) * 1979-06-15 1981-01-07 EASTMAN KODAK COMPANY (a New Jersey corporation) Method of manufacture of flexible photographic materials having anticurl and antistatic layers
US4443504A (en) * 1982-06-09 1984-04-17 E. I. Du Pont De Nemours & Company Coating method
US4508764A (en) * 1982-12-14 1985-04-02 E. I. Du Pont De Nemours And Company Coating process employs surfactants
US5097792A (en) * 1989-03-20 1992-03-24 Konica Corporation Coating apparatus
US5656417A (en) * 1990-01-25 1997-08-12 Fuji Photo Film Co., Ltd. Process for preparing color light-sensitive material by multi layer co-coating
US5332440A (en) * 1992-01-21 1994-07-26 E. I. Du Pont De Nemours And Company Coating lip geometry for slide bead coating
US5380365A (en) * 1992-01-21 1995-01-10 E. I. Du Pont De Nemours And Company Lip surface geometry for slide bead coating
US5728430A (en) * 1995-06-07 1998-03-17 Avery Dennison Corporation Method for multilayer coating using pressure gradient regulation
US5962075A (en) * 1995-06-07 1999-10-05 Avery Dennison Method of multilayer die coating using viscosity adjustment techniques
US6824828B2 (en) 1995-06-07 2004-11-30 Avery Dennison Corporation Method for forming multilayer release liners
US20050074549A1 (en) * 1995-06-07 2005-04-07 Avery Dennison Corporation Method for forming multilayer release liners and liners formed thereby
US20050100677A1 (en) * 1995-06-07 2005-05-12 Avery Dennison Corporation Method for forming multilayer release liners and liners formed thereby
US20030124254A1 (en) * 2001-12-27 2003-07-03 Rexam Image Products, Inc. Wet on wet process for producing films
US6824818B2 (en) 2001-12-27 2004-11-30 Soliant Llc Wet on wet process for producing films

Also Published As

Publication number Publication date
DE2403314C3 (de) 1981-09-24
BE810193A (fr) 1974-07-25
JPS5139980B2 (enrdf_load_stackoverflow) 1976-10-30
CH594907A5 (enrdf_load_stackoverflow) 1978-01-31
DE2403314B2 (de) 1975-09-18
JPS49107040A (enrdf_load_stackoverflow) 1974-10-11
IT1007579B (it) 1976-10-30
FR2215269B1 (enrdf_load_stackoverflow) 1977-06-10
AR215829A1 (es) 1979-11-15
DE2403314A1 (de) 1974-08-08
GB1458852A (en) 1976-12-15
FR2215269A1 (enrdf_load_stackoverflow) 1974-08-23

Similar Documents

Publication Publication Date Title
US3928678A (en) Method and apparatus for coating a substrate
US3993019A (en) Apparatus for coating a substrate
US3508947A (en) Method for simultaneously applying a plurality of coated layers by forming a stable multilayer free-falling vertical curtain
EP0003860B1 (en) Method for applying a plurality of superposed photographic layers to a web by curtain coating
US4569863A (en) Process for the multiple coating of moving objects or webs
US3928679A (en) Method and apparatus for coating a multiple number of layers onto a substrate
US4863765A (en) Method of multi-layer coating
US4572849A (en) Process for the multiple coating of moving webs
EP0622667B1 (en) Method of simultaneous multilayer application
CA1214354A (en) Coating process employs surfactants
US5143758A (en) Coating by means of a coating hopper with coating slots where the coating composition has a low slot reynolds number
US4837045A (en) Coating method
GB2070459A (en) Method of simultaneously applying multiple layers of coating liquids to a web
US6099913A (en) Method for curtain coating at high speeds
JP2001191015A (ja) 塗布方法
JPH05261332A (ja) スライドビードコーテイング用リップ表面形状
US3573965A (en) Multilayer coating method
US3996885A (en) Apparatus for coating a multiple number of layers onto a substrate
US4921729A (en) Two-layer coating method
CA2090595C (en) Minimization of ripple by controlling gelatin concentration
US5545256A (en) Coating apparatus
JP2858136B2 (ja) 塗布方法
EP0566504B1 (en) Method of coating multilayer photographic elements
US5332440A (en) Coating lip geometry for slide bead coating
US5700524A (en) High speed coating starts using a shear thinning top layer