US1826697A - Apparatus for coating - Google Patents

Apparatus for coating Download PDF

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Publication number
US1826697A
US1826697A US312041A US31204128A US1826697A US 1826697 A US1826697 A US 1826697A US 312041 A US312041 A US 312041A US 31204128 A US31204128 A US 31204128A US 1826697 A US1826697 A US 1826697A
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Prior art keywords
coating
coated
composition
film
doctor blades
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Expired - Lifetime
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US312041A
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English (en)
Inventor
William H Charch
Norman A Craigue
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Du Pont Cellophane Co Inc
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Du Pont Cellophane Co Inc
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Priority to US312041A priority Critical patent/US1826697A/en
Priority to FR682966D priority patent/FR682966A/fr
Priority to US461892A priority patent/US1826698A/en
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Publication of US1826697A publication Critical patent/US1826697A/en
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    • 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
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/02—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber
    • B05D7/04—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber to surfaces of films or sheets
    • 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
    • B05D1/40—Distributing applied liquids or other fluent materials by members moving relatively to surface
    • B05D1/42—Distributing applied liquids or other fluent materials by members moving relatively to surface by non-rotary members
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B3/00—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating
    • D06B3/10—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B2700/00—Treating of textile materials, e.g. bleaching, dyeing, mercerising, impregnating, washing; Fulling of fabrics
    • D06B2700/27—Sizing, starching or impregnating fabrics

Definitions

  • This invention relates ,to coating and more particularly to an apparatus for coating films, webs or sheets of cellophane (regenerated viscose) with a moistureproofing composition, such as set forth in copending application Serial No. 308,873, and comprismg a cellulose derivative, a wax, a gum or resin,
  • Cellophane produced in the usual cast- 10; ing machine has a bead on each edge which is two to four times thicker thanthe center parts of the film.
  • 1t was necessary to cut away or trim the bead prior to coating.
  • It is therefore an object of this invention to provide an apparatus for moistureproofmg cellophane films, webs or sheets with a coatmg composition comprising a cellulose derivative, a wax, such as parafiin, a gum or re'sm, a plasticizer and a solvent or solvent mlxture to produce a substantially transparent, odorless, fiexible, non-tacky material.
  • Another object of this invention is to p'rovide an apparatus for carrying out a method whereinthe waxingredient is prevented from precipitatin out and producing a blush.
  • Another o ject of this invention is to provide an apparatus for providing a substantiall ane coating on cellophane having ,l bea ed edges without removing said beaded edges.
  • Still further object is to provide an apparatus having two' sets of doctor blades, whereby the disadvantages occasioned by the beaded edges of the cellophane are eliminated.
  • Figure 1 is a front elevation of the apparatus for carrying out this invention.
  • Figure 2 illustrates the arrangement of the doctor blade mechanism and accompanyin parts.
  • igure 3 is a vertical section through Fig- -ure 2.
  • Figure 4 is a vertical section taken von line 4 4 of Figure 3 illustrating the larrangement 'of the doctor blades.
  • Fi re 5 illustrates the casting on which ythe lade holder trunnion and clamp are mounted.
  • Figure 6 is a detail of the mechanism for moving the doctor blades apart permitting the machine to be threaded with the cellophane film, web or sheet.
  • FIG. 7 is a detail of the humidifying
  • the cellophane inthe form of a continuous film, web or sheet after being subjected to a humidiying atmosphere is passed through 100 a bath containing the coating composition, thence between doctor blades, and finally through a drying chamber.
  • a deodorizing or humidifying atmosphere preferably at a temperature above room temperature, whereby the flexibility-of the Coated film is increased and the last traces of solvents eliminated thus rendering the coated film odorless.
  • the roll 1 consists of a continuous film or web 0f cellophane as it is produced in the usual casting machine.
  • the film or web of cellophane has the usual beaded edges.
  • the cellophane From the source of supply the cellophane passes through a humidifier.
  • a humidifier Various means may be used to humidify the cellophane The description of the following humidifier is merely illustrative and not limitative of the invention.
  • the humidifying box 2 is made of metal and is mounted on the framework in any suitable position between the supply roll 1 and the coating mechanism 4. It comprises a cylindrical portion 10 provided with an extension 11. In the cylindrical portion. 10 there is a slot 12 vproviding an entrance through which the cellophane passes into the interior of the humidifying box.
  • y edges of the slot are preferably rounded to form beads whereby smooth edges are presented tothe cellophane and damage to the latter is eliminated.
  • the extension 11 is also formed with a slot 13 having beaded or turned edges as described whereby the humidified cellophane passes from the humidifier.
  • a roll 14 mounteded on( the cylindrical portion 10 of the humidifier is a roll 14 which together with roll 3 provide means for guiding the cellophane through the humidifier.
  • two ducts 17 Connected to or cooperating with openings 16 in the sides of the extension 11 of the box are two ducts 17 which supply the humidifying atmosphere from any suitable source.
  • the portions of the ducts extending within the box have their ends closed and provided with a slot or ⁇ perforation through which the humidifying atmosphere may be introduced into the box.
  • the amount of humidifying atmosphere introduced is maintained by a damper 18 placed in the duct and controlled by a handle 19.
  • the top of the humidifying box is provided with movable or slidable covers or lids not shown whereby access to the interior of the humidifying box may be readily had.
  • drip connections or valves 21 In the bottom of the cylindrical portion 10 of the humidifier are drip connections or valves 21 whereby the. drippings produced during the operations may be removed.
  • the passage of the film through the humidifier is of relatively short duration and its moisture content is somewhat increased. The increase in moisture serves to minimize to a certain degree the drying out of the film as it passes up through the drying chamber.
  • This step alone is usually not sufficient to prevent an undesirable drying out of the film but in combination with the final humidifying step described below it has been found to be effective.
  • This humidifying step also tends to eliminate wrinkles from the film and prevents a lapping over of the film as it passes through the doctor blades with consequent breakage which would ensue.
  • the film is passed over and under spreading rolls 22 and 23 mounted on the frame and functioning to iron out wrinkles from said film and thence into the coating bath 4.
  • the film may be passed through a slot 24 adjacent which is a wiper 25, which removes anv drippings or globules of condensed moisture. It is obvious that the film may be wiped on one or both sides as desired.
  • a roller 27 which is adapted to be raised'to allow the threading of the cellophane through the machine.
  • a jacket 28 surrounds the receptacle whereby the coating composition may be heated or cooled by the circulation of steam, cold air or water as desired. To obtain optimum results the temperature of the coating composition should be maintained between approximately 20o C. and 40 C. Above 40 C. an appreciable amount of sol- Vvent evaporates, causing an undesirable atmosphere.
  • the wiping mechanism comprises doctor blades 29 and auxiliary doctor blades 30 mounted on blade carriers 31 carried on trunnions 32.
  • the trunnions 32 are carried in bearings formed by semi-cylindrical bores 33 formed in castings 34 and caps 35 having bores 36 complemental to bores 33, secured to castings 34 by any suitable means. If desired, the caps may be provided with oil holes 37 whereby the trunnions may be lubricated.
  • the blade carrier 31 in its lower portion has a bore 38 therethrough, whereby the car,- rier 31 is mounted on the trunnions 32.
  • carrier 31 is formed to provide a support 39 for ⁇ the main doctor blade 29 which is secured thereto by bolts 40.
  • the rear edge of the doctor blade 29 engages a sh'oulder 41 through which screws 42 spaced at suitable intervals in the shoulder 41, pass.
  • the end of screws42 are adapted to engage the rear face of the doctor blade 29, whereby adjustment of the screws will adjust the doctor blades. l.
  • auxiliary or short doctor blades 30 mounted' as immediately hereafter described. Secured to ribs 43 of the blade carrier 31 and adjacent each end thereof by means of bolts 44, are two spaced-apart elements 45.
  • auxiliary blades 30 having a slot or hole 47 extending at an angle, i. e. 45'to said plate. is mounted on elements 45 forming an inclined carrier 46 for the auxiliary blades 30.
  • the carrier 46 is provided with a plurality of holes 48 through which screws 49 are adapted to pass.
  • the auxiliary blades 30 are provided with slots 50 through which the screws 49 pass and which permit sufficient movement of the blades for accurate adjustment. By means of the nuts 49 engaging the ends of the screws 49, the auxiliary blades 30 are locked in position.
  • the main doctor blades 29, mounted as. above described, extend across the width of the machine and constitute means for wiping the entire width of the cellophane sheet, film or web on both sides. It is essential that the wiping edge of the doctor blade 29 be even and kept in adjustment. To this end the edge of the blades is maintained and/or attained by the movement of the screws 42 above described.
  • the main blades' 29 are ar- C3 ranged at an angle to the passing film and in to overlap and, since the blades are adjustable, the amount of overlapping is adjustable. lhls overlapping gives a good scrap- 1ng action and permits the blades to be spaced wider apart than in the usual arrangement.-
  • the auxiliary doctor blades 30 (a pair disposed at each end of the machine) adjustably mounted as above described. are adapted to engage the edge portions and zones adjacent thereto of the cellophane film. Accordingly, the doctor ⁇ blades 30 are made of such length as to only wipe the desired area of the cellophane film, web or sheet. Various lengths may be used. We have found that if the auxiliary blades 30 are twelve inches in length when a film forty inches wide is treated. satisfactory results are obtained.
  • the blades 30 may be staggered and overlapped similar to the main blades 2.9, or the edges may be positioned in the same'plane.
  • the auxiliary doctor blades 30 may be made of various materials. We have obtained satisfactory results when they were made of flexible materials such as spring brass with beaded edge, leather, thin steel and the like. y
  • an externally geared handle mechanism 51 is provided.
  • the handle mechanism 51 is mounted on pads 52 and 53 of the castings 34 and, since both mechanisms are similar, only one will be described.
  • a gear casing 54 is provided with an extension 55 by means of which the casing is securedto the pad.
  • the casing 54 is also provided with bearings or journals 56 and 57 In the journal 56 a stub shaft 58 is polsitioned.
  • a handle mechanism 59 is fastened by any suitable means.
  • Nuts or bolt-heads 68 on the extremity of bolts 66 are adapted to engage a stop-block 69 mounted on the pad 70 of the casting 34 by means of a bolt 70 and positioning dowels.
  • the stop 64 may be, after adjustment to any desired position, locked.
  • the means for attaining this result comprises hand clamp devices 72.
  • the hand clamp 72 'comprises clamping members 73 and 7 3 adapted to engage the trunnion 32 and a screw 74 operated by rotation of the head 75, whereby7 the clamping elements 73, 7 3 are tightened or loosened.
  • ears 76 and bolts 77 and 77 respectively, the clamps are mounted on the end casting 34.
  • the entire wiping mechanism 5 is slidably mounted whereby it may7 be adjusted to any desired position in relation to the coating bath.
  • Various means may be used to attain this result.
  • Extending through the lower portion of the casting 34 is a channel 78 in which a bar 79 is positioned.
  • One end 79 of thebar 79 is bent upwardly and has a bolt 80 extending through a threaded hole 81 therein and through a threaded hole 82 in the casting 34.
  • the bar is formed with a vslot 83 through which af bolt 83 connecting the casting 34 to theframe extends.
  • Rotation of the bolt 8() moves the entire mechanism, the limits of said movement being governed by the length of slot 83.
  • Suitable means may be mounted on the bolt 80 whereby rotation of the screw is prevented when not desired.
  • the coated film is caused to pass into a drier 6 ⁇ located in close proximity to the wiping mechanism, whereby the coated films approach the temperature of the drier as rapidly as possible and before any substantial evaporation of solvent. This is to minimize the amount of solvent evaporated at the lower temperature and to prevent blushing.
  • the drier 6 comprises a casing having heated coils 85 on both sides thereof. Disposed at various points in thel drier are doors 86 hinged to the casing and provided with wire glass windows 87, whereby access to the interior of the drier may be easily had and, due to the wire glass windows 87, the interior of the drier may be at any time viewed.
  • temperature of the drier is preferably main-y tained in the vicinity or at the entrance of the film at 80 C. to 100 C., and the remainder of the drier is maintained at such a temperature that the parafiin or other wax will not be precipitated out.
  • the upper sections of the drier are maintained at a temperature of not lower than 60 C. to 65 C.
  • the coated film is introduced into a humidifier having means ⁇ 8 disposed at lvarious points therein whereby moisture may be introduced in the chamber and restore ory impart flexibility to the coated film.
  • a humidifier having means ⁇ 8 disposed at lvarious points therein whereby moisture may be introduced in the chamber and restore ory impart flexibility to the coated film.
  • Various means may be used to attain this result.
  • steam introduced through pipes, the openings of which are covered with canvas produces satisfactory results.
  • humidifyin chamber is provided with heating coils.
  • he humidifier - is alsoprovlded with doors having windows sinular to the vdrier 6.
  • the drier 6 andand the humidperature corresponding closely to the melting point of the wax, but slightly lower by 5 to 10 C., the moistureproof properties seem to disappear to a great extent.
  • considerable moisture is lost by the film during its initial drying.
  • the film picks up additional moisture sothat its moisture content is brought back to that necessary for a flexible and pliable film.-
  • substantially all-the solvent is eliminated and the film rendered odorless.
  • the film When the film finally issues from 'the warm humidifying chamber and into the air, it becomes self-cooled, its temperature drops and the moistureproof properties of the coatlng are restored. Upon cooling, the coating seals the base materlal andA the molsture which the base has picked up.
  • the coated film passes through the air and is wound on a roll.
  • the material treated is described as a continuous film or web.
  • the invention is not limited thereto since it is obvious that sheets of various sizes may be treated by the herein-described method.
  • a temperature approximately that of the 4melting point ofsaid wax is used. This expression is intended to cover the temperature as set forth in thedescription, viz.. a temperature approximately the same or higher than t-he melting point of the wax in the composition.
  • An apparatus for coating sheets, films, webs and the like comprising means to apply a coating ⁇ composition to the material to be coated, means toonly remove the excess composition from the zones adjacent the longitudinaledges of the material and means to remove Athe excess com osition from the entire width of the materlal to be coated.
  • An apparatus -for coating sheets, films, webs and the like comprising means to apply a coating composition to the material to be coated and means to remove the excess of said coating composition, said means being webs and the like comprising means to apply a coating composition to the material to be coated, a pair of short doctor blades to wi the excess composition from the zones adyacent the longitudinal edges of the material, and a pair of doctorblades to wipe the excess composition from the entire width of the material.
  • An apparatus for coating sheets, films, webs and the like comprising means to apply a coating composition yto the material to be coated, a pair of short doctor' blades to wipe the excess composition from the zones adjacent the longitudinal edges of the material, i
  • doctor blades to wipe the excess composition from the entire width of the material, and means to adjust said doctor blades.
  • An apparatus for coating sheets, films, Webs and the like comprising means to apply 'a coating composition to the material to be coated, a pair of short doctor blades to wi e the excess composition from the zones ad]a cent the longitudinal edges of the material,
  • doctor blades to wipe the excess composition from the entire width of the material, said doctor blades being arranged in staggered relation.
  • apparatus for coating sheets, films, webs and the like Vcomprising means to apply a coating composition to the material to be coated, a pair of short doctor blades to wipe the excess composition from the zones ad]a cent thelongitudinal edgesof the material, and a pair of doctor blades to wipe the excess composition from the entire width of the material, the wiping edges of the second mentioned doctor blades arranged in overlapping relationship.
  • An apparatus for coating sheets, films, Webs and the like comprising means to apply a coating composition tofthe material to be coated, a pair of short doctor blades to wi e
  • webs and the like comprising means to apply and a pair of doctor blades to Wipe the excess composition from the entire width of the material, and means to open up and separate the doctor blades of each pair to permit threading therethrough.
  • Webs and the like comprising means to apply a coating composition to the material to be coated, supports, a plurality of short doctor blades mounted on said supports and constituting means to Wipe the excess composition from the zones adjacent the longitudinal edges of the material, and a pair of oppositelyl disposed doctor blades mounted on said supports and adapted to wipe the excess composition from the opposite sides of the entire Width of the material.
  • An apparatus for coating sheets, lms, webs and the like comprising means to apply a coating composition to the material to b coated, supports, a plurality of short doctor blades mounted on said supports and constituting means to Wipe the excess composition from the zones adjacent the longitudinal edges of the'material, and a pair of oppositely disposed doctor blades mounted on said supports to wipe the excess composition from the opposite sides of the entire width of the mas, terial and means to adjust said doctor blades.
  • An apparatus for coating sheets, films, Webs ahd the like comprising means to apply a coating composition to the material to be coated, supports, a plurality of short doctor blades mounted on said supports and'constituting means to Wipe the excess composition from the zones ad'acent the lon itudinal edges of the materia and a pair cfg opp sitely disposed doctor blades mounted on sai supports to wipe the excess composition from the opposite sides of the entire width of the material, and means to adjust each of Said doctor blades.
  • An apparatus for coating sheets, films, ⁇ Webs andthe like comprising means to apply a coating composition to the material to be coated, supports, a plurality of short doctor blades mounted on said supports and constituting means to Wipe the excess composition from the zones adjacent the longitudinal edges of the material, and a pair of oppositely disposed doctor blades mounted on said supports to Wipe the excess composition from ,GO the opposite sides of the entire Width of the material, and means to at least partially rotate said supports whereby the blades are separated.
  • An apparatus for coating sheets, films, Webs and the like comprising means-to apply a coating composition to the material to be coated, movable supports, a plurality of short doctor blades mounted on said supports and constituting means to Wipe the excess composition from the zones adJacent the longitudi-i nal edges of the material, and a pair of oppositely disposed doctor blades mounted on said supports to wipe the excess composition from the opposite sides of the entire width of the material, and means to prevent movement of said supportsduring operation.
  • An apparatus ⁇ for coating sheets, films, webs and the like comprising means to apply a coating composition to the material to be coated, supports, a plurality of short doctor blades mounted on said supports and constituting means to Wipe the excess composition from the zones ad] ac'ent the longitudinal edges of the material, and a pair of oppositely disposeddoctor blades mounted on said supports to wipe the excess composition from the opposite sides of the entire Width of the material and means to position said supports transversely of the material.
  • Webs and the like comprising means to apply a coating composition to the material to be coated, supports, a plurality of short doctor blades mounted on said supports and constituting means to Wi e the excess composition from the zones a jacent the longitudinal edges of the material, a plurality of oppositely disposed doctor blades mounted onsaid support-s to wipe the excess composition from the opposite sides and the entire Width of the material, means to separate said blades toy permit threading of the material through the apparatus and means to limit the return of said blades to their predetermined wiping position upon bringing together said blades.
  • An apparatus for coating sheets, films, Webs and the like comprising means to apply a coating composition to the material to be coated, supports, a plurality of short doctor blades mounted on said supportsl and constituting means to wipe the excess composition from the zones adjacent the longitudinal edges of the material, a pluralityI of oppositely disposed doctor blades adapted to wipe the excess composition from the opposite sides and the entire width of the material, means to move apart'said supports to permit threading of the material through the apparatus and means to limit the return of said supports to their original predetermined positions.
  • An apparatus for coating sheets, films, Webs and the like comprising means to apply a coating composition to the material to be coated, supports, a plurality of short doctor blades mounted on said supports adapted to wipe the excess composition from the zones ad]acent the longitudinal edges of the material, a plurality of oppositely disposed doctor blades to Wipe the excess composition from the opposite sides and the entire Width supports to permit threading of the nia-4 terial through the apparatus and means limiting the forward movement of said supports.
  • An a paratus for coating sheets, films, webs and t e like comprising means .to aply a coating composition to the-material to e coated, supports, a plurality of short doctor blades mounted on said suplports to wipe the excess composition from t e zones adjacent the longitudinal edges of the material, a plurality of opposite disposed doctor blades adapted to wipe t e excess composition from the opposite sides and the entire width of the material, means to move apart said suplports to permit threadin of the material t rough the apparatus an adjustable ,means limiting 'the forward movement o said supports.
  • An'apparatus for coating sheets, films, webs and the like comprising in combination successive and separate means to humidify the material to be coated, means to remove wrinkles in the material, means to apply a coating composition and means to remove the excess coating composition and means to dry said coating.
  • An apparatus for coating sheets, films, webs and the like comprising in combination successive and separate means to humidify the material to be coated, means to apply a coating composition to said treated mate-l rial, means to remove the excess composition from said material at the zones adjacent the longitudinal edges of the material, means to remove lthe excess composition from the entire width of said material, means to dry said coating and means to humidify the coated material.
  • An apparatus for coating sheets, films, webs and the like comprising in combination successive and separate means to 'apply a coating to the material to be coated, means to remove the excess composition from the coated material at. the zones adjacent the longitudinal edges thereof, means to remove the excess composition from the entire width of said material, and -means to dry the coat? ing disposed in close'proximity to the applymg means.
  • An apparatus for coating sheets, films, webs and thelike comprising in combination successive and separate means to apply a coating composition to the material to be coated, means to remove'the excess composition from said coated material at the zones adjacent the longitudinal edges thereof, means to remove the excess composition from the entire width of said material, means tot dry the coating disposed in 4close proximit to the applying means, and means t0 humi ify the coated material.
  • An apparatus for coating sheets, films, webs and thelike comprising in combination successive and separate means to apply a coating composition to the material to be coated, means to remove'the excess composition from said coated material at the zones adjacent the longitudinal edges thereof, means to remove the excess composition from the entire width of said material, means tot dry the coating disposed in 4close proximit to the applying means, and means t0 humi ify the coated material.
  • webs and the like comprising inf combinationsuccessive'and separate means to humiditythe materlal to be coated, means to apply a coating to said material, means to remove the excess composition fromthe coated material at the zones adjacent the longitudinal edges thereof means to remove the excess composition from the entire width of the coated, material, andmeans to dry the coating disposed in close proximity to the apply- ⁇ ing means.
  • An apparatus for coating sheets, films, webs and the like comprising means to apply a coating composition to the material to e coated, a pair of short doctor blades to wi e the excess composition from the zones adjacent vthe longitudinal edges of the material, a pair of doctor blades to wipe the excess composition from the entire Width of the material, and means to control the ten-v sion' of the material passing through said doctor blades.
  • An apparatus for coating sheets, films, webs and the like comprising means to apply a coating composition to the material to be coated, a pair of short doctor blades to w1 je the excess composition from the zones ⁇ adjacent the longitudinal edges of the material and a pair of doctor blades to wipe the j excess composition from the entire width of the material, and means to regulate the tension of the material passing through the doctor blades, ⁇ said doctor blades bemg arranged in staggered relation.
  • An apparatus for coating sheets, films, webs and t e like comprising means for applying a coating composition to the material to be coated, a pair of short doctor blades to wie the excess composition from the zones adjacent the longitudinal edges of the material and a pair of doctor blades to wipe the excess composition from the entire width of the material being treated, and means to individually adjust each of said doctor blades.
  • An apparatus for coating sheets, films, Webs and ⁇ the like comprising means for applying a coating com osition to the material to be coated, a pair o short doctor blades to wi e the-excess composition from the zones adjacent to longitudinal edges of the material, and a pair of doctor blades to Wipe the excess composition from the entire Width of the material being treated, the wiping edges of each pair of said doctor blades overlapping, and means to individually adjust each of said doctor blades.
  • An apparatus tor coating sheets, tilms, Webs and the like comprising in combination successive and separate means to apply a coating to the material to be coated, means to remove the excess composition from the coated material at the zones adjacent the longitudinal edges thereot, means to remove the excess composition trom the entire Width ot -said material, and drying means to quickly heat the coated film.
  • An apparatus tor coating sheets, films, webs, and the like comprising in combination successive and separate'me'ans to apply a coating composition to the material to be coated, means to remove the excess composition trom said coated material at the zones adjacent the longitudinal edges thereot, means to remove the excess composition trom the entire Width ot the saidmaterial, drying means tquickly heat the coated film, and means to humidity the coated material.
  • An apparatus tor coating sheets, films, webs and the like comprising in combination successive and separate means to humidity the material to be coated, means to apply a coating to said material, means to remove the excess composition trom the coated material at the zones adjacent the longitudinal edges thereof, means to removethe excess'composition trom the entire Width ot the coated material, and drying means to quickly heat the coated film.
  • An apparatus tor coating sheets, films, webs andthe like comprising in combination successive and separate means to humidity the material to be coated, means to iron out the Wrinkles in saidrmaterial, means to apply a coating composition to said treated material, means to remove the excess composition trom said material at the zones adjacent the longitudinal edges ot the material, means to wipe the'excess composition trom the entire Width ot the opposite sides ot said material, and means to dry the coating.
  • An apparatus tor coating sheets, films, webs and the like comprising in combination successive and separate means to humidity the material to be coated, means to iron out the wrinkles in said material, means to apply a coatingcomposition to said treated material, means to remove the excess composition trom said material at the zones adjacent the longitudinal edges ot the material, means to remove the excess composition trom the entire Width ot said material, means to dry said coating, and means to humidity the coatedmaterial.
  • An apparatus tor coating sheets, tilms, webs and the like comprising in combination successive and separate means to remove the Wrinkles in said material, means to apply a coating composition. to said treated material, means to remove the e..ess composition trom said material at the zones adjacent the longitudinal edges ot the material, means to wipe the excess composition trom the entire width ot the opposite sides ot said material, and m'eans to dry the coating.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Coating Apparatus (AREA)
US312041A 1928-10-12 1928-10-12 Apparatus for coating Expired - Lifetime US1826697A (en)

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Application Number Priority Date Filing Date Title
US312041A US1826697A (en) 1928-10-12 1928-10-12 Apparatus for coating
FR682966D FR682966A (fr) 1928-10-12 1929-10-09 Procédé et appareil pour enduire à l'aide de cellophane
US461892A US1826698A (en) 1928-10-12 1930-06-18 Method of coating

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US312041A US1826697A (en) 1928-10-12 1928-10-12 Apparatus for coating

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US1826697A true US1826697A (en) 1931-10-06

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2808340A (en) * 1955-04-05 1957-10-01 Du Pont Process for coating nonfibrous organic sheet material
US2920399A (en) * 1956-02-29 1960-01-12 American Viscose Corp Apparatus for finishing cellophane
US2932276A (en) * 1956-05-31 1960-04-12 American Viscose Corp Sheet coating means with safety clutch
US2961336A (en) * 1955-06-17 1960-11-22 Nat Steel Corp Method of hot coating strip materials with paints or enamels
US3301698A (en) * 1961-06-08 1967-01-31 Harris Intertype Corp Method and apparatus for simultaneously developing and fixing electrostatically formed images
FR2124890A5 (fr) * 1971-01-27 1972-09-22 Inventing Ab
US3889018A (en) * 1973-03-16 1975-06-10 Ethyl Corp Method of simultaneously coating the opposite sides of a paper web
US4569304A (en) * 1983-08-09 1986-02-11 Aeci Limited Coating apparatus
US5609685A (en) * 1994-03-17 1997-03-11 Interplastic Sa Apparatus suitable for providing directly by means of calendering an excellent anchorage between a fabric and its plastic coating material

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2808340A (en) * 1955-04-05 1957-10-01 Du Pont Process for coating nonfibrous organic sheet material
US2961336A (en) * 1955-06-17 1960-11-22 Nat Steel Corp Method of hot coating strip materials with paints or enamels
US2920399A (en) * 1956-02-29 1960-01-12 American Viscose Corp Apparatus for finishing cellophane
US2932276A (en) * 1956-05-31 1960-04-12 American Viscose Corp Sheet coating means with safety clutch
US3301698A (en) * 1961-06-08 1967-01-31 Harris Intertype Corp Method and apparatus for simultaneously developing and fixing electrostatically formed images
FR2124890A5 (fr) * 1971-01-27 1972-09-22 Inventing Ab
US3930464A (en) * 1971-01-27 1976-01-06 Ab Inventing Apparatus for applying a coating composition onto a web
US3889018A (en) * 1973-03-16 1975-06-10 Ethyl Corp Method of simultaneously coating the opposite sides of a paper web
US4569304A (en) * 1983-08-09 1986-02-11 Aeci Limited Coating apparatus
US5609685A (en) * 1994-03-17 1997-03-11 Interplastic Sa Apparatus suitable for providing directly by means of calendering an excellent anchorage between a fabric and its plastic coating material

Also Published As

Publication number Publication date
FR682966A (fr) 1930-06-04

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