US3690297A - Non-aqueous coating of webs - Google Patents
Non-aqueous coating of webs Download PDFInfo
- Publication number
- US3690297A US3690297A US843677A US3690297DA US3690297A US 3690297 A US3690297 A US 3690297A US 843677 A US843677 A US 843677A US 3690297D A US3690297D A US 3690297DA US 3690297 A US3690297 A US 3690297A
- Authority
- US
- United States
- Prior art keywords
- gap
- blade
- web
- head
- pond
- 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
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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
- D21H23/34—Knife or blade type coaters
- D21H23/36—Knife or blade forming part of the fluid reservoir, e.g. puddle-type trailing blade or short-dwell coaters
-
- 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
- B05C5/001—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work incorporating means for heating or cooling 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
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
- B05C5/0254—Coating heads with slot-shaped outlet
- B05C5/0262—Coating heads with slot-shaped outlet adjustable in width, i.e. having lips movable relative to each other in order to modify the slot width, e.g. to close it
-
- 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
- D06B1/00—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating
- D06B1/08—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating from outlets being in, or almost in, contact with the textile material
-
- 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
- D21H5/0017—Trailing blade coaters, e.g. blade engaging paper and forming bottom wall of reservoir
-
- 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
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
- B05C11/04—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Coating Apparatus (AREA)
Abstract
Apparatus for supplying molten coating through a narrow extruding gap in a distributor head to a pond confined between a supported web and a metering blade carried by the head downstream of the gap. The metering blade extends from the lower surface of the gap and supports the pond. A heat shield is mounted to the upper gap defining member and extends over the pond to prevent heat loss from the coating material.
Description
United States Patent Dentch et al.
[ Sept. 12, 1972 [54] NON-AQUEOUS COATING OF WEBS [72] Inventors: Milton P. Dentch, Northboro, Mass; Robert M. Jodrey, Lake Oswego, Oreg.; Samuel L. Guastella, Westminster, Mass; Jerry J. Larrivee,
Gorharn, Mass.
[73] Assignee: Blandin Paper Company, Grand Rapids, Mich.
[22] Filed: July 22, 1969 [21] Appl. No.: 843,677
[52] U.S. Cl ..118/410, 118/429 [51] Int. Cl ..B05c 5/02 [58] FieldofSearch ..118/407,410,4l1,412,413,
[56] References Cited 7 UNITED STATES PATENTS 2,439,802 4/ 1948 Francis ..118/407 X 2,474,691 6/1949 Roehm ..1 18/410 3,070,066 12/1962 Faeber ..1 18/413 3,074,374 l/l963 Burkle ..1 18/300.6 3,348,526 10/1967 Neubauer ..118/410 3,518,964 7/1970 Nagler ..118/410 X Primary Examiner-John P. McIntosh Attorney-W. R. l-lulbert [57] ABSTRACT Apparatus for supplying molten coating through a narrow extruding gap in a distributor head to a pond confined between a supported web and a metering blade carried by the head downstream of the gap. The metering blade extends from the lower surface of the gap and supports the pond. A heat shield is mounted to the upper gap defining member and extends over the pond to prevent heat loss from the coating material.
16 Claims, 3 Drawing Figures PATENTED 12 3.690 297 SHEEI 1 [IF 2 FIG.
PATENTED 3.690.297
sum 2 or. 2
NON-AQUEOUS COATING WEBS This invention relates to non-aqueous coating of webs.
Objects of the invention are'to provide thin, uniform, smooth coating on webs, efficiently (e.g., at high web speeds); even with highly viscous, quick setting, printing grade coating material having low necking strength and'applied to publication paper; with inexpensive, reliable, easily maintained equipment.
The invention features. supplying molten coating through a narrow extruding gap in a distributor head, to a pond confined between the web and a metering blade carried by the head directly downstream of the gap. In preferred embodiments the pond is no greater than one-fourth inch deep; an adjustable spreader defines a surface adjacent'the gap and is integral with the head through a flexible neck, adjustment bolts being provided to raise or lower the spreader, flexing the .neck, for gap control; the blade extends forward of the gap only'a short-distance, so that as coating curls upwardly uponleaving the gap it contacts the web just beyond the top of the curl; the head is heated to maintain the molten condition of the coating; the head provides a chamber with an inlet portion tapering to an extruding portion including the gap; a shield above the pond retains heatand breaks up anyair film on the moving web; the blade is rigid enough to exert great pressure on the web and backup roll (e.g., up to 50 pounds per inch of bladewidth); web speed is in excess of 1,000 ft./min.; and the'coating sets almost immediately upon passing the blade, and is applied as thinly as under 3.5 pounds per 3,300 ftf. e 7
Other objects, features, and advantages will appear form the following description of a preferred embodiment of the invention, taken together with the attached drawings thereof, in which:
FIG. 1 is a semi-schematic elevation of a coating head connected to a screw extruder;
FIG. 2 is a cross-section of the head in operating position against the backup roll; and
FIG. 3 is a sectional view of-the head taken along 3 3 of FIG. '2.
Hopper is mounted at the inlet of a conventional heated screw ,extruder 12, the outlet of which is connected through feed pipe 14 to central inlet at the back of distributor head 22.
Metering blade 50 (0.025 inch thick, preferred range 0.0250.l inch, with a taper to a sharp point) is bolted to head 22 at the bottom of chamber portion 30, and protrudes forward of the head by three-eights inch (preferred range Vi-l .Sinch).
The head is mounted adjacent rubber 60 P. & J. hardness, with a preferred range of 0-200 P. & J.) covered backing roll 82. Associatedconventional web handling mechanism (not shown) is provided.
In operation, web 90, of highly finished publication paper (0.0019 inch caliper), is threaded to pass over roll 82 at 2,500 ft./min. (preferred range exceeds 1,000
ft./min.). Pellets of thermoplastic printing grade coating material (greater than 50 percent pigment content) are loaded in hopper 10" and convertedto a viscous (viscosity substantially greater than 10,000 centipoise) liquid which enters chamber'24. Head 22 is kept hot to prevent the coating from setting. Cylinders 74 are actuated to position the head at an angle of 50". to the vertical (preferred range 4070) adjacent the web, and to load the tip of blade 50 against the web and roll 82 at 30 p.l.i. (pounds per inch of blade width, with a preferred range of 20-50 p.l.i.). With the blade so loaded, end deckles 54 and 56 will barely contact the web, and shield 59 will be spaced about one thirtysecond inch from the web. Chamber portion 30 is set to a 0.030 inch gap (preferred range 0.020-0.090 inch).
The molten coating will spread across the full width of the blade between the end deckles as it is forced through portion 30, and will curl away from blade 50 upon leaving the head, as shown in FIG. 2. As the mass of coating bends back over toward the blade it hits and adheres to the moving web. As the web passes by the blade all but a thin film of coating material (3.5 lbs/3,300 ftF, preferred range 0.5-15 lbs/3,300 ft?) is retained in a small pond 96 above the blade, providing an extended area over which the web isexposed to molten coating. The fact that the coating mass is traveling generally parallel to the web at initial contact, and the provision of the pond, with its extended wetting area, and the metering blade, all result in a well adhered, uniform, smooth film. The coating sets almost immediately upon passing the blade. Shield 59 conserves heat in the pond, and breaks up the air film adjacent the fast moving web.
Other embodiments will occur to those skilled in the art and are within the following claims:
What is claimed is:
1. Apparatus for applying a hot melt coating material to a moving web, comprising:
a. a backup roll mounted to rotate and support said web,
b. a source of non-aqueous melt of said material,
0. a distributor head having top and bottom members, said distributor head being connected to said source and further having 1. an extruding gap defined by said top and bottom members, said top member forming a top wall for said gap and said bottom member forming a bottom wall for said gap,
2. a hot rigid metering blade mounted to said bottom wall of said gap and having an upper surface in contact with'said material, said blade extending from said gap to provide a metering edge directly downstream of said gap, and
3. means including said top wall forming an adjustable spreader for determining the size of said p d. means for heating said distributor head to maintain the molten condition of said material,
e. means mounting said heat to have an operating position with said metering edge in contact with said web and pressed against said roll, to thereby confine with said blade and web a pond of said molten material,
f. said pond providing a web wetting zone, and
g. a shield mounted to the top member of said distributor and extending therefrom above said pond to a point adjacent said web to conserve heat to said pond and to break up any air film on said moving web.
2. The apparatus of claim 1 wherein said head provides a chamber having an inlet portion and an extruding portion of reduced height, said spreader providing a surface of said extruding portion and being movable to determine said height.
3. The apparatus of claim 2 wherein said spreader is integral with the rest of said head through a flexible neck, and an adjusting bolt is provided to raise or lower said spreader by flexing said neck.
4. The apparatus of claim 1 wherein said blade extends downstream of said gap a limited distance, controlled so that said material issuing from said gap and initially curling away from said blade will contact said web near the top of the curl.
5. The apparatus of claim 1 wherein the pressure of said blade against said roll is at least 20 pounds per inch of blade width.
6. The apparatus of claim 5 wherein said pressure is about 30 pounds per inch of blade width.
7. The apparatus of claim 1 wherein said blade is between 0.025 and 0.l25 inch thick and extends downstream of said gap by between one-quarter inch and 1.5 inch.
8. The apparatus of claim 7 wherein said blade extends downstream of said gap by three'eights inch.
9. The apparatus of claim 1 wherein said material is thermoplastic printing grade coating material and said web is highly finished publication paper.
10. The apparatus of claim 9 wherein the viscosity of said molten material is at least 10,000 centipoise.
11. The apparatus of claim 1 wherein said gap is between 0.020 and 0.090 inch high.
12. The apparatus of claim 1 wherein said gap is no greater than 0.030 inch high.
13. The apparatus of claim 1 wherein the weight of coating applied is between 0.5 and 15 lbs/3,300 ft.
14. The apparatus of claim 13 wherein said weight is no greater than 3.5 lbs/3,300 ft.
15. A distributor head for applying a hot melt coating material to a moving web on a backup roll, comprising:
a. said head having top and bottom members, and further having a chamber for receiving a molten su l of said material; b. a re ri ow extrusion gap leading from said chamber to an outside surface of said head, said extrusion gap being defined by said top and bottom mem? bers, said top member forming a top wall for said gap and said bottom member forming a bottom wall for said gap;
c. a rigid metering blade mounted in said gap, forming a portion of a bottom wall thereof, and extending therefrom with a metering edge directly downstream of said gap;
d. means for heating said head and blade to maintain material in said chamber and gap in a molten condition;
e. means for adjusting the size of said gap; and
f. a heat shield mounted to the top member of said distributor and extending from said head above said gap and blade to conserve heat in material being discharged from the gap on said blade.
16. The apparatus of claim 15 wherein said means for adjusting the size of the gap comprises a spreader integrally formed with said head through a flexible neck, said spreader forming an upper wall of said gap, and means for moving said spreader by flexing said neck.
UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3,690,297 Dated September 12, 1972 Inventor(s) Milton P. Dentch et. al.
It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:
On the cover sheet [73] v "Mich." should read Minn. Column 1, line 36, "form" should read from Column 3, line 11, "heat" should read head lines 1 l9 and 20, "heat to said pond" should read heat in said pond vSigned and sealed this 20th day of March 1973.
(SEAL) Attest:
EDWARD M. FLETCHER,JR. v
ROBERT GOTTSCHALK Attesting Officer Commissioner of Patents FORM PO-IOSO (10-69) USCOMM-DC 60376-P69 9 [L5, GOVERNMENT PRINTING OFFICE: I969 0-366-335.
Claims (18)
1. Apparatus for applying a hot melt coating material to a moving web, comprising: a. a backup roll mounted to rotate and support said web, b. a source of non-aqueous melt of said material, c. a distributor head having top and bottom members, said distributor head being connected to said source and further having 1. an extruding gap defined by said top and bottom members, said top member forming a top wall for said gap and said bottom member forming a bottom wall for said gap, 2. a hot rigid metering blade mounted to said bottom wall of said gap and having an upper surface in contact with said material, said blade extending from said gap to provide a metering edge directly downstream of said gap, and 3. means including said tOp wall forming an adjustable spreader for determining the size of said gap, d. means for heating said distributor head to maintain the molten condition of said material, e. means mounting said heat to have an operating position with said metering edge in contact with said web and pressed against said roll, to thereby confine with said blade and web a pond of said molten material, f. said pond providing a web wetting zone, and g. a shield mounted to the top member of said distributor and extending therefrom above said pond to a point adjacent said web to conserve heat to said pond and to break up any air film on said moving web.
2. a hot rigid metering blade mounted to said bottom wall of said gap and having an upper surface in contact with said material, said blade extending from said gap to provide a metering edge directly downstream of said gap, and
2. The apparatus of claim 1 wherein said head provides a chamber having an inlet portion and an extruding portion of reduced height, said spreader providing a surface of said extruding portion and being movable to determine said height.
3. The apparatus of claim 2 wherein said spreader is integral with the rest of said head through a flexible neck, and an adjusting bolt is provided to raise or lower said spreader by flexing said neck.
3. means including said tOp wall forming an adjustable spreader for determining the size of said gap, d. means for heating said distributor head to maintain the molten condition of said material, e. means mounting said heat to have an operating position with said metering edge in contact with said web and pressed against said roll, to thereby confine with said blade and web a pond of said molten material, f. said pond providing a web wetting zone, and g. a shield mounted to the top member of said distributor and extending therefrom above said pond to a point adjacent said web to conserve heat to said pond and to break up any air film on said moving web.
4. The apparatus of claim 1 wherein said blade extends downstream of said gap a limited distance, controlled so that said material issuing from said gap and initially curling away from said blade will contact said web near the top of the curl.
5. The apparatus of claim 1 wherein the pressure of said blade against said roll is at least 20 pounds per inch of blade width.
6. The apparatus of claim 5 wherein said pressure is about 30 pounds per inch of blade width.
7. The apparatus of claim 1 wherein said blade is between 0.025 and 0.125 inch thick and extends downstream of said gap by between one-quarter inch and 1.5 inch.
8. The apparatus of claim 7 wherein said blade extends downstream of said gap by three-eights inch.
9. The apparatus of claim 1 wherein said material is thermoplastic printing grade coating material and said web is highly finished publication paper.
10. The apparatus of claim 9 wherein the viscosity of said molten material is at least 10,000 centipoise.
11. The apparatus of claim 1 wherein said gap is between 0.020 and 0.090 inch high.
12. The apparatus of claim 1 wherein said gap is no greater than 0.030 inch high.
13. The apparatus of claim 1 wherein the weight of coating applied is between 0.5 and 15 lbs./3,300 ft.2.
14. The apparatus of claim 13 wherein said weight is no greater than 3.5 lbs./3,300 ft.2.
15. A distributor head for applying a hot melt coating material to a moving web on a backup roll, comprising: a. said head having top and bottom members, and further having a chamber for receiving a molten supply of said material; b. a narrow extrusion gap leading from said chamber to an outside surface of said head, said extrusion gap being defined by said top and bottom members, said top member forming a top wall for said gap and said bottom member forming a bottom wall for said gap; c. a rigid metering blade mounted in said gap, forming a portion of a bottom wall thereof, and extending therefrom with a metering edge directly downstream of said gap; d. means for heating said head and blade to maintain material in said chamber and gap in a molten condition; e. means for adjusting the size of said gap; and f. a heat shield mounted to the top member of said distributor and extending from said head above said gap and blade to conserve heat in material being discharged from the gap on said blade.
16. The apparatus of claim 15 wherein said means for adjusting the size of the gap comprises a spreader integrally formed with said head through a flexible neck, said spreader forming an upper wall of said gap, and means for moving said spreader by flexing said neck.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US84367769A | 1969-07-22 | 1969-07-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3690297A true US3690297A (en) | 1972-09-12 |
Family
ID=25290699
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US843677A Expired - Lifetime US3690297A (en) | 1969-07-22 | 1969-07-22 | Non-aqueous coating of webs |
Country Status (1)
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US (1) | US3690297A (en) |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3919974A (en) * | 1973-11-09 | 1975-11-18 | Bolton Emerson | Hot melt extrusion apparatus |
US3927409A (en) * | 1972-05-01 | 1975-12-16 | Varian Associates | Multistage thin film toning system for developing charged images |
US3968271A (en) * | 1971-12-20 | 1976-07-06 | Xerox Corporation | Coating apparatus and uses thereof |
US4175977A (en) * | 1977-09-19 | 1979-11-27 | International Paper Company | Process for producing a flowable, highly pigmented, low viscosity, hot-melt coating compound |
WO1980000014A1 (en) * | 1978-06-06 | 1980-01-10 | Ludlow Corp | An improved dielectric product and process for the preparation thereof |
US4375486A (en) * | 1980-07-10 | 1983-03-01 | Ludlow Corporation | Process of making a dielectric product |
EP0297268A2 (en) * | 1987-06-30 | 1989-01-04 | Nordson Corporation | Device for applying liquid glues to a substrate |
WO1996011295A1 (en) * | 1994-10-11 | 1996-04-18 | Eduard Küsters Maschinenfabrik GmbH & Co. KG | Device for applying a fluid treatment or decoration agent |
WO1996015857A1 (en) * | 1994-11-23 | 1996-05-30 | Alcan International Limited | Coating of wax-like materials onto moving strip articles |
WO1996015858A1 (en) * | 1994-11-23 | 1996-05-30 | Alcan International Limited | Coating strip material with protective/decorative layers while avoiding use of solvents |
US5622562A (en) * | 1993-05-27 | 1997-04-22 | Alcan International Limited | Coating strip material with protective decorative layers while avoiding use of solvents |
US5725665A (en) * | 1996-05-01 | 1998-03-10 | Minnesota Mining And Manufacturing Company | Coater enclosure and coating assembly including coater enclosure |
US5891526A (en) * | 1995-12-01 | 1999-04-06 | International Business Machines Corporation | Apparatus for mixing a multi-component encapsulant and injecting it through a heated nozzle onto a part to be encapsulated |
US6033726A (en) * | 1993-05-27 | 2000-03-07 | Alcan International Limited | Coating of wax-like materials onto moving strip articles |
US6426119B1 (en) | 1994-01-04 | 2002-07-30 | 3M Innovative Properties Company | Coating method employing die enclosure system |
US6444269B1 (en) | 1997-06-27 | 2002-09-03 | Alcan International Limited | Apparatus and method for coating sheet or strip articles |
WO2002083324A2 (en) * | 2001-04-12 | 2002-10-24 | Voith Paper Patent Gmbh | Applicator |
US6582555B2 (en) | 2001-11-05 | 2003-06-24 | Kimberly-Clark Worldwide, Inc. | Method of using a nozzle apparatus for the application of the foam treatment of tissue webs |
US6730171B2 (en) | 2001-11-05 | 2004-05-04 | Kimberly-Clark Worldwide, Inc. | Nozzle apparatus having a scraper for the application of the foam treatment of tissue webs |
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US2439802A (en) * | 1945-01-02 | 1948-04-20 | Jr Carleton Shurtleff Francis | Apparatus for forming films and coatings |
US2474691A (en) * | 1946-03-20 | 1949-06-28 | Virts Inc | Web coating apparatus |
US3070066A (en) * | 1957-08-06 | 1962-12-25 | Time Inc | Coating apparatus having blade control means and releasable blade holder |
US3074374A (en) * | 1958-04-23 | 1963-01-22 | Burkle Robert | Varnish pouring machine |
US3348526A (en) * | 1964-03-27 | 1967-10-24 | Crown Zellerbach Corp | Coating apparatus for coating webs |
US3518964A (en) * | 1968-05-02 | 1970-07-07 | Bergstrom Paper Co | Coating applicator with surrounding chamber |
-
1969
- 1969-07-22 US US843677A patent/US3690297A/en not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2439802A (en) * | 1945-01-02 | 1948-04-20 | Jr Carleton Shurtleff Francis | Apparatus for forming films and coatings |
US2474691A (en) * | 1946-03-20 | 1949-06-28 | Virts Inc | Web coating apparatus |
US3070066A (en) * | 1957-08-06 | 1962-12-25 | Time Inc | Coating apparatus having blade control means and releasable blade holder |
US3074374A (en) * | 1958-04-23 | 1963-01-22 | Burkle Robert | Varnish pouring machine |
US3348526A (en) * | 1964-03-27 | 1967-10-24 | Crown Zellerbach Corp | Coating apparatus for coating webs |
US3518964A (en) * | 1968-05-02 | 1970-07-07 | Bergstrom Paper Co | Coating applicator with surrounding chamber |
Cited By (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3968271A (en) * | 1971-12-20 | 1976-07-06 | Xerox Corporation | Coating apparatus and uses thereof |
US3927409A (en) * | 1972-05-01 | 1975-12-16 | Varian Associates | Multistage thin film toning system for developing charged images |
US3919974A (en) * | 1973-11-09 | 1975-11-18 | Bolton Emerson | Hot melt extrusion apparatus |
US4175977A (en) * | 1977-09-19 | 1979-11-27 | International Paper Company | Process for producing a flowable, highly pigmented, low viscosity, hot-melt coating compound |
WO1980000014A1 (en) * | 1978-06-06 | 1980-01-10 | Ludlow Corp | An improved dielectric product and process for the preparation thereof |
US4303720A (en) * | 1978-06-06 | 1981-12-01 | Ludlow Corporation | Dielectric product |
US4375486A (en) * | 1980-07-10 | 1983-03-01 | Ludlow Corporation | Process of making a dielectric product |
EP0297268A2 (en) * | 1987-06-30 | 1989-01-04 | Nordson Corporation | Device for applying liquid glues to a substrate |
EP0297268A3 (en) * | 1987-06-30 | 1990-03-14 | Nordson Corporation | Device for applying liquid glues to a substrate |
US5622562A (en) * | 1993-05-27 | 1997-04-22 | Alcan International Limited | Coating strip material with protective decorative layers while avoiding use of solvents |
US5846599A (en) * | 1993-05-27 | 1998-12-08 | Alcan International Limited | Coating strip material with protective/decorative layers while avoiding use of solvents |
US6033726A (en) * | 1993-05-27 | 2000-03-07 | Alcan International Limited | Coating of wax-like materials onto moving strip articles |
US6426119B1 (en) | 1994-01-04 | 2002-07-30 | 3M Innovative Properties Company | Coating method employing die enclosure system |
WO1996011295A1 (en) * | 1994-10-11 | 1996-04-18 | Eduard Küsters Maschinenfabrik GmbH & Co. KG | Device for applying a fluid treatment or decoration agent |
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