US2774327A - Apparatus for production of coated tape - Google Patents

Apparatus for production of coated tape Download PDF

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Publication number
US2774327A
US2774327A US296111A US29611152A US2774327A US 2774327 A US2774327 A US 2774327A US 296111 A US296111 A US 296111A US 29611152 A US29611152 A US 29611152A US 2774327 A US2774327 A US 2774327A
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US
United States
Prior art keywords
film
nozzle
strip
track
cylindrical surface
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
US296111A
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English (en)
Inventor
Saint-Hilaire Albert Barbier
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Individual
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Individual
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Publication of US2774327A publication Critical patent/US2774327A/en
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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/842—Coating a support with a liquid magnetic dispersion
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/633—Record carriers characterised by the selection of the material of cinematographic films or slides with integral magnetic track

Definitions

  • a magnetic sound tea e 51 a movi g pi u e Th obje f e n e t smt pr vid a Pro es n a p a u by wh th curvature of such a film due to the shrinkage of the layer of gela in whi h overs the f e, pp s te t ha whi is to receive the magnetic sound track, may be counteracted so as to present a perfectly fiat surface to the coating apparatus, enabling a track of constant width and thickness to be obtained, and by which such a uniform track may bedeposited despite changes in the hygrometric conditions, which cause the shrinking of the galatin and consequently the curvature of the film .to vary, and changes in the viscosity of the coating medium, as well as variations in the speed of unwinding of the film.
  • the invention concerns first of all a process for depositing on a supple strip a narrow track of a coating medium, the width of which is comprised between 0.5 m n. and 3 mm. or more, consisting in imparting to the strip the necessary flatness by causing the face of the strip which is to be coated to pass against the tip of a nozzle, which tip is c onstituted by a cylindrical surface provided, along a generatrix of the said cylindrical surface, with an aperture of constant width, constituting a slit for the passage of the coating medium, the downstream edge of which slit is constituted by the straight edge of a' scraper disposed parallel to a generatrix' of the said cylindrical surface, in leaving free from any contact near the nozzle the other face of the strip and in causing the strip to leave the said cylindrical surface in a predetermined direction which is tangent to the said surface at a point in the vicinity of the said slit.
  • the invention concerns also an apparatus for carrying out the process described above, comprising a coating nozzle the tip of which has a cylindrical surface under which and in contact with which thestrip to be coated is caused to pass, the lower portion of which cylindrical surface is provided with an aperture of constant width the downstream edge of which is constituted by the straight edge of a scraper parallel to a generatrix of the said cylindrical surface, determining the width of the slit.
  • Another feature of the invention consists in a cylindrical support, which may be fixed or adapted to turn about its axis, situated downstream of the nozzle, at a small distance therefrom and at a predetermined level which is a function of this distance and of the thickness of'the coating to be applied, on which support is resting onits way out the face of the strip on which no track has been deposited.
  • the apparatus comprises devices for ensuring that the tension of the strip passing under the nozzle remains constant.
  • the width of the film path of said nozzle is limited by two stops adjustable in position, 'the distance betwee'h which, preferably, isequalto that' wi'dth of the strip to -be a .7 .i. .7 r,
  • Figure l is a diagrammatic section of acoating nozzle forming part of the apparatus of the invention.
  • Figure 2 is a section along 11%11 of Figure 1;
  • Figure 3 is ,a plan view o f a moving picturefilm coated i h ma tt c sqi in rt ac by heme 9 h 2 .16 s wn igqr s u d yi
  • Figure 4 is a diagrammatic view, sectional .in part, of an arrangement accordingto the invention, comprising the nozzle shown in Figures '1 and 2;
  • Figure 5 is a similar view to that of Figure 4, illustrating an alternative embodiment'of the invention, to be used when the strip tobe coated is not provided with perforations; i x
  • Figure 6 is a diagrammatic view of a pressing roller for ensuring'a constant'te'nsion ofthe strip in the ararngement ShOWninFigu're'S'; i
  • Figures 8 and 9 are, respectively, a diagrammatic transverse sec'tion of a nozzle sii'n'ilar'to that shown in Figures l an'd' 2',"and a viejv'in plahof a film with a single row of perforations, coated with a magnetic soundtrack obtained b'y means of this nozzles" i FigureslG and 11 re? ilar views to those of Figures 8 and 9, showing amine with two slits adapted to P W h f 'ie souhd eck im o sl a a l a a ibi iier g hti h Figures 12 and 13 'a re"side' and front elevations, re-
  • a nozzle is use th 't p c 'i hfih h s ext al h ape' f a pn q of a cy ndrica suriacethe s of which is Pe pendi'cular to the di 'ection M t vel of the filni f which is caused to pass under and ag nst the tip of this nozzle in cre to f it r a'ma h h tra o t ng in a deposit a su't co ng medium issuingthrougli a b c iir 2510f able .c'ph
  • the lengthb of the coating slit is theoretically equal to the distance a between the point of tangency of the strip to the cylindrical surface and the vertical projection on the'strip of the edge of the scraper.
  • r is the radius of curvature of the cylindrical surface of the tip of the nozzle and his the thickness of the coating when moist;
  • the length b of the coating orifice may be raised to a maximum value of twice a in order to increase the discharge, which otherwise would be insufiicienti On the contrary, in the case of very large tracks, one must not give to b a value greater than a.
  • the radius of curvature of the cylindrical surface of the tip of coating nozzles for magnetic sound tracks on strips 8 mm., 9.5 mm., 16 mm., and 35 mm. width is practically comprised between 10 and 50 mm., but theselimits need not be strictly adhered to.
  • the thickness 11 of themoist coating is of the order of 1 mm.
  • the path of the strip under the nozzle is limited laterally by two stops 5 distant from each other by the exact width of the film.
  • One of these stops may, however, be maintained in position resiliently by the pressure of a spring, such as 5'.
  • a simple manner of achieving this purpose consists in paying out the strip before the nozzle by a sprocket drum 7 having the same peripheric'speed as the pulling sprocket drum 6 and to intercalate between the said paying-out drum and the nozzle a tension pulley 8 which maintains the strip under the desired tension by means of a spring 8 or of a counterweight.
  • the frictional device is a classic model and its sliding motion must bevery regular.
  • the diameter d of the cylindrical support will be lower than or equal to 2r.
  • the maximum value 2r is the maximum diameter it is possible to give'to d when 0:11 that the film may not be jammed between the cylinder and the support. Practically, d will be close to c.
  • this cylindrical support 4 In order to be able to adjust the level of this cylindrical support 4, it may be mounted on a bent lever 12, adapted to pivot about an axis 13 (Figs. 4 and 5); the adjusting screw 14 allows it to be displaced vertically with the desired precision.
  • Fig. 10 represents the section of a nozzle for the deposit of two tracks of 0.8 mm., externally of the perforations, on a film of 16 mm.
  • Fig. 8 represents the section of a nozzle for the deposit of 'a track of 2.5 mm. on the location of the optical track of a film of 16 mm. with one row of perforations (Fig. 9).
  • a reel 15 on which is wound the film f to be1coated A tension regulating device, constituted, in thecase of perforated films, by the paying-out sprocket'drum 7 and the tension roller 8,
  • the roller 4 fixed or rotative, situated at'a small distance from the nozzle, downstream thereof, and per; mitting the adjustment of the thickness-of the coating to be deposited,
  • the pulling sprocket drum 6, A drierconstituted first by a passage 17 and then by .an air-heated chamber 18, in which the filrnfollows a sinuous path so as to remain in the heated air the ,time necessary'to dry the coating, a I p A fan 19 which blows air, heated by ribbed'heating elements 20 through the chamber 18 and issuing; at 21 at the end of the passage 17 situated near thepulling drum 6, 1
  • a paying-out drum 22 pulling the film through. the drier before it is wound on the receiving spool,23,f
  • a tension roller 24 permitting the tension of'the film to be maintained constant while it travels between the first paying-out drum 6 and the second paying-out drum 22, by means of a spring 23.
  • Figs. 12 and 13 represent in greater detail the manner in which the coating nozzle may be constructed and fixed on the hopper 16.
  • the nozzle 1 is secured on the lower portion of the vertical hopper 16 by means of a strap 26 and screws 27, for example; the outlet of the hopper corresponds practically in dimensions to the inlet orifice of the nozzle.
  • the nozzle comprises also lateral bearing surfaces 28 for securing the guiding stops by means of screws 29, for example.
  • the doctor blade 3 is secured by means of screws 30, for example, on a vertical surface 31 constituting the downstream wall of the nozzle. Owing to this arrangement, it is easy to change the nozzle 1, the doctor blade 3 or the lateral guides 5 in case of wear or damage or when a different type of film is'to be treated.
  • An apparatus for depositing a sound track on a flexible film comprising a nozzle a part of which is shaped externally according to a cylindrical surface, and provided with at least one slit along a part of said cylindrical surface, the upstream edge of said slit being substantially coincident with the generatrix of said cylindrical surface situated at a location where said film leaves said cylindrical surface tangentially thereto, while the downstream edge of said slit is constituted by the lower edge of a scraper situated on the extension of said cylindrical surface at a predetermined distance from the line from which said film leaves said cylindrical part, so that said lower edge of said scraper is situated at a level above the path of travel followed by said film from the line at which said film leaves said cylindrical part, means for advancing the film past the nozzle, and means for causing the film to pass over and in contact with a substantial portion of the cylindrical surface immediately upstream of the slit.
  • An apparatus as claimed in claim 1 in which is provided a cylindrical support for the film, the position of which is adjustable relative to the nozzle and which is situated at a predetermined distance from said slit, in the direction of motion of said film, the contact line of said film with said support being situated at a level lower than the level of said lower edge, said level of said support being adjusted so .as to ensure a predetermined thickness of the track applied on the upper face of said film.
  • An apparatus as claimed in claim 1 including a device for applying a constant tension to the film passing against said cylindrical surface of said nozzle, said device comprising a paying-out sprocket drum followed by a tension roller, said device being disposed before said nozzle.
  • An apparatus as claimed in claim 1 including a support for the film, said support being situated at a predetermined distance from said slit and at a level which is adjusted relative to the lower edge of said scraper so as insure a predetermined thickness of the track applied on the upper face of said film, a device for applying a constant tension to the film, and a drying chamber in which the film follows a devious path of sufiicient length to dry the'track on said film.

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  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
US296111A 1951-07-19 1952-06-28 Apparatus for production of coated tape Expired - Lifetime US2774327A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1039974X 1951-07-19

Publications (1)

Publication Number Publication Date
US2774327A true US2774327A (en) 1956-12-18

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US296111A Expired - Lifetime US2774327A (en) 1951-07-19 1952-06-28 Apparatus for production of coated tape

Country Status (4)

Country Link
US (1) US2774327A (fr)
CH (1) CH313804A (fr)
DE (1) DE1052703B (fr)
FR (1) FR1039974A (fr)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2891506A (en) * 1954-11-23 1959-06-23 Pyral Sa Apparatus for the deposit of a coating on a flexible band and in particular for the deposit of magnetic sound tracks on cinematographic films
US2931740A (en) * 1956-08-23 1960-04-05 Montedison Spa Magnetic elements and methods for making the same
US2983250A (en) * 1958-01-30 1961-05-09 Cons Electrodynamics Corp Liquid coating apparatus
US3009847A (en) * 1956-09-20 1961-11-21 Du Pont Magnetic recording tape and process of making same
US3013707A (en) * 1958-09-15 1961-12-19 Beloit Iron Works Web tension control means
US3094914A (en) * 1959-04-06 1963-06-25 Cons Electrodynamics Corp Photographic development equipment
US3099371A (en) * 1960-03-14 1963-07-30 High Voltage Engineering Corp Tacky adhesives spreading machine
US3136661A (en) * 1957-03-07 1964-06-09 Schjeldahl Co G T Applicator apparatus for depositing dissolved plastic ribbons
US3199491A (en) * 1961-03-24 1965-08-10 Degussa Apparatus for coating one surface of a strip by a fluid bed sintering procedure
US3203393A (en) * 1963-02-18 1965-08-31 Burroughs Corp Apparatus for applying stripes of low viscosity coating material
US3237973A (en) * 1962-10-10 1966-03-01 Pateco Magnetically orientable wrapping materials and method of making and using same
US3322099A (en) * 1963-12-06 1967-05-30 Soc Ind Des Silicones Machine for impregnating and coating web material
US3339523A (en) * 1962-10-15 1967-09-05 Joseph J Herrera Film striping apparatus
US3446649A (en) * 1963-09-05 1969-05-27 Azoplate Corp Developing electrostatic images with a liquid developer
US3619328A (en) * 1967-07-17 1971-11-09 Molins Machine Co Ltd Apparatus for applying adhesive to continuous webs
US4059069A (en) * 1976-08-30 1977-11-22 The Arnold Engineering Company Coating apparatus
US4324816A (en) * 1975-05-22 1982-04-13 Eastman Kodak Company Method for forming a stripe by extrusion coating
US4388349A (en) * 1980-11-21 1983-06-14 Permacel Extrusion coating process
JPS58189069A (ja) * 1982-04-08 1983-11-04 Konishiroku Photo Ind Co Ltd 磁性体分散液の塗布方法
US4480583A (en) * 1981-12-16 1984-11-06 Fuji Photo Film Co., Ltd. Coating apparatus
US4907530A (en) * 1986-07-15 1990-03-13 Fuji Photo Film Co., Ltd. Apparatus for applying a liquid to a support
US5817209A (en) * 1995-01-25 1998-10-06 Abb Power T&D Company Inc. Adhesive bording system for bonding laminae to form a laminate
US5958178A (en) * 1995-12-12 1999-09-28 Billhoefer Maschinenfabrik Gmbh Visual lamination with thermoplastic adhesives

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1146737B (de) * 1960-10-27 1963-04-04 Adolf Brodbeck Vorrichtung zum Beleimen von Papierhuelsen in Huelsenwickelmaschinen
JPS5854622B2 (ja) * 1979-02-28 1983-12-06 平岡織染株式会社 コ−テイング装置
US5376178A (en) * 1991-07-31 1994-12-27 Sony Corporation Coating apparatus

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US896504A (en) * 1908-01-16 1908-08-18 Eastern Finishing Works Apparatus for striping fabric.
US2203910A (en) * 1937-04-15 1940-06-11 Robissa S A Apparatus for coloring, printing, and decorating flat surfaces, particularly woven textiles
US2249200A (en) * 1939-04-03 1941-07-15 Plant Equipment Corp Adhesive applicator for paper tape
US2332385A (en) * 1941-07-03 1943-10-19 Minnesota & Ontario Paper Co Apparatus for coating
US2375493A (en) * 1941-06-14 1945-05-08 Reiss Mfg Corp Apparatus for coating
US2494378A (en) * 1945-11-30 1950-01-10 Dexter Lyall Netherton Apparatus for striping fabrics

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE459279C (de) * 1928-04-26 Franz Westhoff Giessvorrichtung fuer Folien
DE319301C (de) * 1918-03-19 1920-03-02 Ver Gummiwaaren Fabriken Harbu Streichmesser
DE805812C (de) * 1948-10-02 1951-05-31 Basf Ag Verfahren zur Herstellung von Magnetogrammtraegern

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US896504A (en) * 1908-01-16 1908-08-18 Eastern Finishing Works Apparatus for striping fabric.
US2203910A (en) * 1937-04-15 1940-06-11 Robissa S A Apparatus for coloring, printing, and decorating flat surfaces, particularly woven textiles
US2249200A (en) * 1939-04-03 1941-07-15 Plant Equipment Corp Adhesive applicator for paper tape
US2375493A (en) * 1941-06-14 1945-05-08 Reiss Mfg Corp Apparatus for coating
US2332385A (en) * 1941-07-03 1943-10-19 Minnesota & Ontario Paper Co Apparatus for coating
US2494378A (en) * 1945-11-30 1950-01-10 Dexter Lyall Netherton Apparatus for striping fabrics

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2891506A (en) * 1954-11-23 1959-06-23 Pyral Sa Apparatus for the deposit of a coating on a flexible band and in particular for the deposit of magnetic sound tracks on cinematographic films
US2931740A (en) * 1956-08-23 1960-04-05 Montedison Spa Magnetic elements and methods for making the same
US3009847A (en) * 1956-09-20 1961-11-21 Du Pont Magnetic recording tape and process of making same
US3136661A (en) * 1957-03-07 1964-06-09 Schjeldahl Co G T Applicator apparatus for depositing dissolved plastic ribbons
US2983250A (en) * 1958-01-30 1961-05-09 Cons Electrodynamics Corp Liquid coating apparatus
US3013707A (en) * 1958-09-15 1961-12-19 Beloit Iron Works Web tension control means
US3094914A (en) * 1959-04-06 1963-06-25 Cons Electrodynamics Corp Photographic development equipment
US3099371A (en) * 1960-03-14 1963-07-30 High Voltage Engineering Corp Tacky adhesives spreading machine
US3199491A (en) * 1961-03-24 1965-08-10 Degussa Apparatus for coating one surface of a strip by a fluid bed sintering procedure
US3237973A (en) * 1962-10-10 1966-03-01 Pateco Magnetically orientable wrapping materials and method of making and using same
US3339523A (en) * 1962-10-15 1967-09-05 Joseph J Herrera Film striping apparatus
US3203393A (en) * 1963-02-18 1965-08-31 Burroughs Corp Apparatus for applying stripes of low viscosity coating material
US3446649A (en) * 1963-09-05 1969-05-27 Azoplate Corp Developing electrostatic images with a liquid developer
US3322099A (en) * 1963-12-06 1967-05-30 Soc Ind Des Silicones Machine for impregnating and coating web material
US3619328A (en) * 1967-07-17 1971-11-09 Molins Machine Co Ltd Apparatus for applying adhesive to continuous webs
US4324816A (en) * 1975-05-22 1982-04-13 Eastman Kodak Company Method for forming a stripe by extrusion coating
US4126511A (en) * 1976-08-30 1978-11-21 Arnold Engineering Company Coating selected areas of a substrate
US4059069A (en) * 1976-08-30 1977-11-22 The Arnold Engineering Company Coating apparatus
US4388349A (en) * 1980-11-21 1983-06-14 Permacel Extrusion coating process
US4480583A (en) * 1981-12-16 1984-11-06 Fuji Photo Film Co., Ltd. Coating apparatus
JPS58189069A (ja) * 1982-04-08 1983-11-04 Konishiroku Photo Ind Co Ltd 磁性体分散液の塗布方法
US4907530A (en) * 1986-07-15 1990-03-13 Fuji Photo Film Co., Ltd. Apparatus for applying a liquid to a support
US5817209A (en) * 1995-01-25 1998-10-06 Abb Power T&D Company Inc. Adhesive bording system for bonding laminae to form a laminate
US5958178A (en) * 1995-12-12 1999-09-28 Billhoefer Maschinenfabrik Gmbh Visual lamination with thermoplastic adhesives

Also Published As

Publication number Publication date
CH313804A (fr) 1956-05-15
DE1052703B (de) 1959-03-12
FR1039974A (fr) 1953-10-12

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