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US3559301A - Air flotation system for conveying web materials - Google Patents

Air flotation system for conveying web materials Download PDF

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Publication number
US3559301A
US3559301A US748319A US3559301DA US3559301A US 3559301 A US3559301 A US 3559301A US 748319 A US748319 A US 748319A US 3559301D A US3559301D A US 3559301DA US 3559301 A US3559301 A US 3559301A
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United States
Prior art keywords
web
air
support
nozzle
nozzles
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US748319A
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English (en)
Inventor
William A R Fraser
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Egan Machinery Co
Leesona Corp
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Egan Machinery Co
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Publication date
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Publication of US3559301A publication Critical patent/US3559301A/en
Assigned to JOHN BROWN INDUSTRIES LTD., A CORP. OF DE. reassignment JOHN BROWN INDUSTRIES LTD., A CORP. OF DE. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: LEESONA CORPORATION; 333 STRAWBERRY FIELD RD., WARWICK, RI. A CORP. OF MA.
Assigned to LEESONA CORPORATION reassignment LEESONA CORPORATION CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE DATE 3-31-81 STATE OF DELAWARE Assignors: JOHN BROWN INDUSTRIES LTD.
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Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
    • F26B13/101—Supporting materials without tension, e.g. on or between foraminous belts
    • F26B13/104—Supporting materials without tension, e.g. on or between foraminous belts supported by fluid jets only; Fluid blowing arrangements for flotation dryers, e.g. coanda nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/34—Feeding or guiding devices not specially adapted to a particular type of apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/34—Feeding or guiding devices not specially adapted to a particular type of apparatus
    • B21C47/3466—Feeding or guiding devices not specially adapted to a particular type of apparatus by using specific means
    • B21C47/3475—Fluid pressure or vacuum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/24—Registering, tensioning, smoothing or guiding webs longitudinally by fluid action, e.g. to retard the running web
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/10—Means using fluid made only for exhausting gaseous medium
    • B65H2406/11—Means using fluid made only for exhausting gaseous medium producing fluidised bed
    • B65H2406/112—Means using fluid made only for exhausting gaseous medium producing fluidised bed for handling material along preferably rectilinear path, e.g. nozzle bed for web

Definitions

  • FIG. 8 AIR FLOTATION SYSTEM-FOR CONVEYING WEB MATERIALS Filed Julyf29. 1968 '4 Sheets-Sheet 4 W6 LAM/NATOR 8/ W4 COATER 1;] D Q b FIG. 8
  • a coated or impregnated web of flexible material is conveyed or subjected to desired treatment, such as drying, during movement through a housing in which the web is supported and guided in floating condition by support means using a gaseous medium and is maintained out of contact with devices within the housing.
  • the support means comprises a plurality of spaced, novel, support nozzles that are positioned adjacent and across one side of the web and that are so constructed as to utilize the Bernoulli theorem as applied to gases and the Coanda Effect during operation.
  • This invention relates to the art of conveying web materials and, more particularly, to improved apparatus for supporting and guiding a moving web of a flexible material in floating or contact-free condition in the course of travel from one point to another.
  • apparatus constructed in accordance with this invention is adapted to properly support and guide a moving flexible web in floating condition.
  • the apparatus includes an improved air support nozzle having superior operational characteristics whereby the apparatus is free of the above indicated objections and difiiculties in use.
  • the air support nozzle constitutes an important feature of the invention.
  • This nozzle is positioned adjacent and across one side of the web and is so constructed and arranged as to utilize the Bernoulli theorem as applied to gasses in operation.
  • the Bernoulli theorem states, in effeet, that any increase or decrease in the velocity of a stream of gas results in a corresponding decrease or increase of the pressure of the gas.
  • the air support nozzle also utilizes and take advantage of the Coanda Effect which is disclosed in H. Coanda Pat. No. 2,052,869 and is referred to in O. G. Haywood Pat. No. 3,316,657.
  • Another important feature of the invention is the provision of separate and independently adjustable means for furnishing air under pressure to air treating means and to the air support nozzles.
  • This feature permits changes in operating conditions, such as an increase or decrease in drying rate, without appreciably affecting the operational efficacy of the air support nozzles.
  • the air treating means and the air support nozzles may each be designed for optimum functional efficiency in contrast to prior art constructions in which the design of the combined treating and support means necessitates undesirable functional compromise.
  • the primary object of this invention is to provide web conveying apparatus having improved features of design and construction.
  • Another object of the invention is to provide apparatus for simultaneously treating a moving web of flexib e material and supporting the web in floating condition in a gaseous environment.
  • a still further object of the invention is the provision of web treating apparatus of the character indicated that is relatively simple in design; that is rugged and durable in construction; that is reasonable in manufacturing, installation, maintenance and operating costs; that is adapted to properly handle a wide variety of materials which may differ in degree of flexibility, width and unit weight; and that is capable of performing its intended functions in an eflicient and dependable manner.
  • FIG. 1 is a view, partly diagramatic and partly in vertical longitudinal cross section, of a system of apparatus constructed in accordance with this invention
  • FIG. 2 is a View taken along line 22 of FIG. 1;
  • FIG. 3 corresponds to a portion of FIG. 1 and illustrates a first modification thereof, certain parts which are the same as like parts in FIG. 1 being omitted;
  • FIG. 4 also corresponds to a portion of FIG. 1 and illustrates a second modification thereof, certain parts which are the same as like parts in FIG. 1 being omitted;
  • FIG. 5 is an enlarged side elevation view of a web support nozzle unit which is also shown in FIGS. 1 and 2;
  • FIG. 6 is an enlarged view taken along line 66 of FIG. 5;
  • FIG. 7 is a fragmentary view which is derived from FIG. 6 and which identifies critical dimensions of and between parts of illustrated elements.
  • FIG. 8 is a generally schematic representation of a third modification of the invention.
  • air is not limited to atmospheric air but encompasses, instead, any suitable gas or mixture of gases.
  • the therein illustrated system of apparatus comprises a first mechanism 10, a second mechanism 11, which is spaced laterally from the first mechanism, and a web treating unit 12, which is positioned between these mechanisms.
  • Mechanism 10 serves multiple functions which include supporting and dispensing a continuous flexible web W.
  • Mechanism 11 also serves multiple functions which include receiving and supporting the web. As is indicated in FIG. 1, web W extends through treating unit 12 in the course of travel from mechanism 10 to mechanism 11.
  • Mechanism 10 comprises a supply reel 13 on which is wound the material of web W; a pan 14 containing a supply of a selected liquid treating composition 15; and a plurality of rolls, namely rolls 16, 17, 18 and 19.
  • Reel 13 and rolls 16 through 19 are rotatable about corresponding parallel axes.
  • roll 16 is positioned above and between reel 13 and roll 17; roll 17 is disposed in pan 14 and is submerged in composition 15; and rolls 18 and 19 are arranged above the pan and to the right of roll 17.
  • web W, on leaving reel 13 advances in the direction indicated by the arrows and passes over roll 16, under roll 17, between the nip of rolls 18 and 19, and then over roll 19.
  • the same is coated, impregnated or saturated with composition 15 as it moves through pan 14. Excess amounts of the composition on the web are squeezed out as the web passes between rolls 18 and 19 and returned by gravity to the pan.
  • Mechanism 11 comprises a pair of cooling rolls 20 and 21 and a winding reel 22, all of which are supported for rotation about corresponding parallel axes.
  • Web W passes from roll 19, through unit 12, over and under roll 20, over and under roll 21 and thence onto reel 22 in the order named.
  • Mechanisms 10 and 11 are driven in timed relation by suitable means (not shown).
  • the several reels and rolls may be of any desired appropriate form and construction known to the art.
  • Unit 12 includes a housing H having a top wall 24, a bottom wall 25, a rear end wall 26, a front end wall 27 and a pair of side walls 28 and 29.
  • Rear end wall 26 has a horizontal inlet slot 30 for entry of the web into the housing while front end wall 27 has a like discharge slot 31 for exit of the web from the housing.
  • Air drying means 32 and 34 are located to opposite sides of web W and are relatively inverted whereby to direct high velocity streams or jets of air against corresponding faces of the web.
  • Means 32 and 34 may be of any suitable type known to the art, such as that disclosed in A. G. Russell Pat. No. 3,134,654 to which reference may be had for details of construction and operation.
  • Drying means 32 are connected to a plenum chamber 36.
  • a blower 37 supplies air, at desired temperature and under predetermined pressure, to plenum chamber 36 by way of a conduit 38 that is equipped with a damper 39 for controlling air fiow.
  • drying means 34 are connected to a plenum chamber 40 and air, at desired temperature and under predetermined pressure, is supplied to this plenum chamber by a blower 41 and a conduit 42 having a damper 43.
  • Air is exhausted from the interior of the housing by an arrangement of devices including an upper exhaust header 44 that is positioned in the upper region of the housing and a lower exhaust header 45 that is positioned in the lower region of the housing.
  • the headers communicate with an exhaust blower 46, that is mounted above the housing, by means of corresponding conduits 47 and 48 and a common conduit 49.
  • Treating unit 12 also comprises a pluarity of air support nozzles 50 which will be described in detail further along herein. These nozzles are positioned in housing H and above web W and are so constructed and arranged as to cooperate with other parts to create an air cushion whereby the web is supported for movement along a substantially horizontal path, approximately midway between corresponding air discharge nozzles 33 and 35, as it passes through the housing and is maintained out of contact with devices within the housing. Air support nozzles 50 are spaced within the housing, one being located adjacent inlet slot 30, another adjacent outlet slot 31 and at least still another between banks of upper air drying means 32.
  • Proper spacing of the nozzles is dependent on a number of factors including the unit weight of the web, the tension developed in the web between rolls 19 and 20, the velocity and volume of drying air supplied by air drying means 32 and 34. It has been determined that a spacing of from 2 feet to 10 feet, or more, between successive air support nozzles 50 results in satisfactory performance in the treating and handling of usual webs by a system of apparatus according to this invention.
  • a blower 51 which is mounted on housing top wall 24, furnishes air to support nozzles 50 by way of a conduit 52, a manifold 53 and branch conduits 54, in the order named (FIG. 1).
  • Conduit 52 is equipped with a damper 55 for controlling the flow of air therethrough.
  • the air supply for the support nozzles 50 is independent of the drying air supply for each of air drying means 32 and 34 and that such air supplies are adapted to be individually and independently controlled by respective dampers 55, 39 and 43.
  • the air supplied to the support nozzles may be heated by conventional means (not shown) to the end that the air upon discharge from these nozzles assists in drying the web and thereby increases the overall drying capacity of unit 12.
  • FIG. 3 the therein illustrated construction is recommended for the treatment of a web W1 which has been coated only on its under or bottom surface.
  • Banks of earlier described lower air drying means 34 are arranged in the form of an arch and are disposed beneath the web sothat drying air impinges on the wet bottom surface coating.
  • Air support nozzles 50 are arranged above the web, as shown, and maintain the web in arch configuration during operation. Depending on the velocity and volume of drying air impinging on the web, the support nozzles effectively support the web against the force of gravity and tension in the web; and, if the drying air volume and velocity are high, the support nozzles restrain the web from 'being blown upwardly.
  • FIG. 4 The arrangement of banks of earlier described air drying means 32 and air support nozzles 50 shown in FIG. 4 is recommended for the treatment of a web W2 which has been coated only on its top surface.
  • the air drying means 32 are disposed above the web and'the air support nozzles are disposed below the web, as shown.
  • air support nozzles 50 may be located above, below or to opposite sides of the web regardless of whether only one surface or both surfaces of a web are coated or the location of the air drying means.
  • Each of these nozzles includes a hollow body which is comprised of a top wall 56, a pair of elongated parallel side walls 57 and 58 and a pair of end walls 59.
  • the hollow body defines a plenum space 60 which communicates with conduit 54.
  • a generally L-shaped nozzle member 61 is secured to the lower end portion of body side wall 57 by screws 62.
  • the nozzle member includes -a lower flange which terminates in a planar end part 63 that projects toward side wall 58.
  • An angle bracket 64 bears against the outer surface of the lower portion of side wall 58 and is afiixed thereto by screws 65.
  • Welded to the lower flange of the bracket is a Venturi plate 66.
  • Nozzle member 61 and Venturi plate 66 extend the full width of the tubular body.
  • the Venturi plate is configured to obtain an inner end part 67 which projects upwardly and inwardly in plenum space 60, a concave, arcuate outer end part 68 and an intermediate planar part 69.
  • Venturi plate part 69 and nozzle member part 63 are spaced apart and substantially parallel and define a throat 70.
  • web W is located below and adjacent to nozzle 50.
  • air supplied to plenum space 60 by blower 51 is discharged therefrom at high velocity through throat 70 into a plenum space 71 which is bounded 'by Venturi plate 66 and web W where part of the air velocity is converted to a static head.
  • Air flow continues through a restricted first passage 72, then through an enlarged second passage 73, which are defined by Venturi plate part 68 and web W, and thence in the region of housing H above the web. Due to the Coanda Effect, the air flowing through passage 72 follows the under surface of Venturi plate part 68; and, since this passage is relativelynarrow, the air attains a very high velocity in this passage. As a consequence and in accordance with Bernoullis theorem, this high velocity results in a corresponding low air pressure. Since the air pressure on the under side of the web is then greater than that in passage 72, the web is forced upwardly toward the Venturi plate. This causes passage 72 to become progressively more restricted. At the same time, the air pressure in passage 72 increases progressively to a value at which a state of pressure equilibrium is reached whereby the web remains stable a short distance below the air support nozzle.
  • FIG. 6 indicates not only the relative position of the portion of web W of FIG. 1 adjacent to an air support nozzle 50 but also the corresponding relative position of web W1 of FIG. 3 and web W2 of FIG. 4. It will be recognized from an examination of FIG. 6 that a web will be properly supported in a stable manner in any of the following conditions or combinations of such conditions:
  • Condition 1 The Web approaches and moves past the air support nozzles in a substantially straight line that is substantially parallel to throat 70 and passage 72 and there is no force other than its own weight tending to make the web move toward or away from the air support nozzles. This condition is exemplified by web W and treating unit 12 of FIG. l1-
  • Condition 2 The web approaches and moves past the air support nozzles at an angle of less than 180, which angle is on the air support nozzle side of the web, and the web tension force tends to move the web toward the air support nozzles.
  • This condition is exemplified by web W2 and the treating unit modification shown in FIG. 4.
  • Condition 3 The Web approaches and moves past the air support nozzles at an angle greater than 180, which angle is again on the air support nozzle side of the web, and the web tension force tends to move the Web away from the air support nozzles.
  • This condition is exemplified by Web W1 and the treating unit modification shown in FIG. 3.
  • the apparatus of this invention operates satisfactorily and with good results regardless of the direction of movement of the web, i.e. whether the web moves in the same direction as the air flow through throats 70 of air support nozzles 50 or in a direction opposite to that of such air flow. Movement of the web in the same direction as the air flow through the nozzle throats is preferred in most instances where the web is lightweight and/or is under relatively low tension.
  • FIG. 7 illustrates the configuration and relative position of nozzle member 61 and Venturi plate 66 and which identifies the following critical dimensions:
  • A-Rise which is the distance between the under surfaces of nozzle member part 63 and Venturi plate part 68;
  • BThroat gap which is the height of throat 70 (FIG. 6);
  • C-Venturi radius which is the radius of Venturi plate part 68;
  • D-Advance which is the distance between the free end of part 63 and the vertical radius of part 68;
  • BThroat length which is the length of throat 70.
  • F-Overhang which is the distance between the vertical radius of part 68 and the outer or free end of part 68.
  • a typical air support nozzle 58 constructed in accordance with this invention has the following specific dimensions: rise A 0.375"; throat gap B 0.125"; Venturi radius C 5.000"; advance D 2.500”; throat length E 0.750" and overhang F 2.000".
  • Air support nozzles of this design and having a length of 60 inches were utilized in a system of the character illustrated in FIGS. 1 and 2 and operated satisfactorily to effectively support from above an impregnated web of pound kraft paper that was 54 inches wide.
  • the air support nozzles were spaced on to 6 foot centers and were operated with a static air pressure of 4 inch water column measured within the nozzle tubular body. It has been calculated that, at this pressure, the air velocity through nozzle throat 70 was approximately 8,000 feet per minute and that the air flow through each nozzle was approximately 415 cubic feet per minute.
  • air support nozzle 50 In order to attain proper and uniform air flow through nozzle throat 70 it is desirable and important that air support nozzle 50 have a suitable aspect ratio, i.e. the ratio of the cross sectional area of the air support nozzle, as shown in FIG. 6, to the area of the nozzle throat which is determined by multiplying throat gap B by the length of the air support nozzle.
  • the aspect ratio should be at least 6 to 1 and preferably to 1 or greater.
  • the air pressure within the air support nozzles should be adjusted to the minimum necessary for satisfactory web support. Such adjustment may be readily and conveniently accomplished by means of damper 55. Heavy webs usually require a higher air pressure within the support nozzles than lighter webs.
  • FIG. 8 a third modification of the invention by which a flexible web W4 is conveyed through the air in free-floating condition with the aid of air support nozzles 50 which are not located in a confined zone, such as earlier-described treating unit 12.
  • This modification comprises, by way of illustration, a coating unit, generally denoted by numeral 75, which is utilized to cost the undersurface of the web with a suitable composition having adhesive properties.
  • the coating on the web may, if desired, be partially dried in unit 75.
  • the exposed coated surface of the web remains in sticky or tacky condition between the time it exits from unit 75 and is bonded to a second flexible Web W5 by means of a laminating unit 76 which comprises a pair of parallel rolls 77 and 78.
  • a first idler roll 80 is positioned adjacent unit 75 while a second idler roll 81 is positioned adjacent unit 76. These rolls are spaced apart a substantial distance, for example, 45 feet or more, and are mounted for rotation about parallel horizontal axes.
  • Coating unit 75 and idler roll 80 correspond in a broad sense to mechanism 10 (FIG. 1) in that they serve multiple functions including supporting and dispensing a web.
  • Idler roll 81 and laminating unit 76 correspond broadly to mechanism 11 (FIG. 1) in that they, in turn, serve multiple functions including receiving and supporting the web.
  • Web W5 consists of a material which may be the same as or different from that of web W4. Also, web W5 may be provided on its undersurface with a coating, which is the same as or similar to that of web W4, or may be devoid of such coating. As shown, web W5 engages an idler roll 82 which is parallel to rolls and 81. Both webs are maintained in tension by suitable means (not shown). The webs travel at the same linear speed and move in the directions indicated by corresponding arrows. It will be observed that the webs pass through the nip between rolls 77 and 78 whereby their undersurfaces are brought into intimate contact and bonded together to obtain a combined web W6.
  • web W4 Arranged above web W4 is a plurality of spaced air support nozzles 50 which operate and function in the manner described earlier herein to support this web in free-floating condition in the course of its travel between idler rolls 80 and 81.
  • the modification shown in FIG. 8 is especially useful for conveying webs having adhesive coatings which cannot tolerate contact with support or guide rolls. It is also useful in situations where it is desirable to avoid scratching or otherwise marring delicate webs. This modification, by utilizing air support nozzles 50 in place of a large number of idler rolls effectively minimizes any possibility of such scratching or marring.
  • Apparatus for conveying a moving web of flexible material comprising:
  • At least one air support nozzle positioned adjacent and across one side of the web and so constructed and arranged as to utilize the Bernoulli theorem as applied to gases and the Coanda effect in operation.
  • Apparatus according to claim 1 also comprising:
  • Apparatus according to claim 4 also comprising:
  • Apparatus according to claim 5 also comprising:
  • Apparatus according to claim 4 also comprising:
  • adjustable means for controlling independently the flow of air through the air support nozzle and through the web treating means
  • Apparatus according to claim 1 wherein the air support nozzle comprises:
  • air discharge means extending along the lower portion of the hollow body and between the end walls and including:
  • a nozzle member carried by one of the side walls and (2) a Venturi member carried by the other side wall, the nozzle member and the Venturi member being spaced apart and defining a nozzle throat which establishes communication between the interior and the exterior of the hollow body.
  • one part of the Venturi member is spaced above said part of the nozzle member and has a substantially planar lower surface
  • Apparatus according to claim 11 wherein said planar upper surface of the nozzle member is substantially parallel to said planar lower surface of the Venturi member.
  • Apparatus according to claim 12 wherein the air support nozzle has a rise (A) within the range of from 0.100" to 1.500, a throat gap (B) within the range of from 0.050" to 0.300", a Venturi radius (C) within the range of from 2.00" to 10.00", an advance (D) within the range of from 0.50” to 5.00", a throat length (E) within the range of from 0.20" to 2.00” and an overhang (F) within the range of from 0.50" to 4.00".
  • A rise
  • B within the range of from 0.050" to 0.300
  • a Venturi radius (C) within the range of from 2.00" to 10.00
  • an advance (D) within the range of from 0.50" to 5.00
  • a throat length (E) within the range of from 0.20" to 2.00
  • an overhang (F) within the range of from 0.50" to 4.00.
  • Apparatus according to claim 12 wherein the air support nozzle has a rise (A) Within the range of from 0.250 to 1.000", a throat gap (B) within the range of from 0.105" to 0.156", a Venturi radius (C) within the range of from 4.00" to 6.00, an advance (D) within the range of from 1.25" to 3.00", a throat length (E) within the range of from 0.50" to 1.00" and an overhang (F) Within the range of from 1.50" to 3.00".

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Textile Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Advancing Webs (AREA)
  • Coating Apparatus (AREA)
  • Paper (AREA)
  • Drying Of Solid Materials (AREA)
  • Treatment Of Fiber Materials (AREA)
US748319A 1968-07-29 1968-07-29 Air flotation system for conveying web materials Expired - Lifetime US3559301A (en)

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US74831968A 1968-07-29 1968-07-29

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US3559301A true US3559301A (en) 1971-02-02

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US748319A Expired - Lifetime US3559301A (en) 1968-07-29 1968-07-29 Air flotation system for conveying web materials

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JP (1) JPS4942149B1 (de)
DE (1) DE1938529B2 (de)
GB (1) GB1269826A (de)

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3629952A (en) * 1970-11-16 1971-12-28 Overly Inc Airfoil web dryer
US3662476A (en) * 1970-12-30 1972-05-16 Offen & Co Inc B Air flow control structure for web driers
US3705676A (en) * 1970-03-16 1972-12-12 Overly Inc Air foil conveyor
US3711960A (en) * 1971-08-26 1973-01-23 Overly Inc Web dryer
US3722105A (en) * 1971-07-06 1973-03-27 Owens Illinois Inc Apparatus and method for applying radio frequency energy to a moving web of material
US3907480A (en) * 1973-01-08 1975-09-23 Robert A Renoux Apparatus for processing thin plastics film
US3914477A (en) * 1972-01-04 1975-10-21 Owens Corning Fiberglass Corp Method of coating and drying strands
US3982328A (en) * 1974-05-29 1976-09-28 Aktiebolaget Svenska Flaktfabriken Dryer for material coated on two surfaces
US3999696A (en) * 1975-05-27 1976-12-28 Crown Zellerbach Corporation Web threading system
EP0012731A1 (de) * 1978-12-06 1980-06-25 AB Svenska Fläktfabriken Vorrichtung zum Trocknen bahnförmigen Materials
EP0063642A1 (de) * 1981-04-28 1982-11-03 Brückner Trockentechnik GmbH & Co. KG Vorrichtung zur Heissluft-Trocknung von Textilgut
US4474496A (en) * 1983-01-24 1984-10-02 W. R. Grace & Co. Compact dryer for two web stretches
FR2582090A1 (fr) * 1985-05-16 1986-11-21 Worldwide Converting Mach Secheur a circulation d'air
US4674976A (en) * 1984-01-26 1987-06-23 Japan Styrene Paper Corporation Method for the preparation of a foamed article of a polyolefin resin
US4698914A (en) * 1986-05-29 1987-10-13 E. I. Du Pont De Nemours And Company Setting/drying process for flexible web coating
US4776107A (en) * 1987-10-30 1988-10-11 Wolverine Corporation Web treatment system
US4804125A (en) * 1986-03-06 1989-02-14 Hilmar Vits Device for floatably guiding webs of material by means of a gaseous or liquid medium
WO1990012689A1 (en) * 1989-04-19 1990-11-01 Quad/Tech, Inc. Bernoulli-effect web stabilizer
EP0414125A3 (en) * 1989-08-22 1992-05-20 Hoechst Aktiengesellschaft Process and apparatus for drying a liquid coating applied onto a moving substrate
US5486236A (en) * 1994-05-06 1996-01-23 Hughes Aircraft Company Accelerated extraction of rolled materials
WO1996018074A1 (en) * 1994-12-06 1996-06-13 W.R. Grace & Co.-Conn. Combination air bar and hole bar flotation dryer
EP0733870A3 (de) * 1995-03-21 1997-07-16 Grace W R & Co Kontaktlose Schwebetrockner-Bahnführung
EP0870612A3 (de) * 1997-01-15 1999-08-18 PLATSCH, Hans G. Trocknereinheit
EP1132702A3 (de) * 2000-02-16 2001-09-19 Lindauer Dornier Gesellschaft M.B.H Verfahren zum Führen einer Warenbahn und Wärmebehandlungsvorrichtung
US6598315B1 (en) * 1999-06-30 2003-07-29 Metso Paper, Inc. Nozzle arrangement in airborne web-drying and method for improving heat transfer in airborne web-drying
US20040251372A1 (en) * 2003-06-12 2004-12-16 Eastman Kodak Company Winding apparatus having Bernoulli guide shoe leading into roller-core nip and method
WO2005116552A1 (de) * 2004-04-30 2005-12-08 Optimags Dr. Zimmermann Gmbh Vorrichtung zum beschichten einer trägerfolie mit einem pharmazeutischen wirkstoff
US20060248745A1 (en) * 2005-05-03 2006-11-09 3M Innovative Properties Company Fixed air knife assembly
US20080075867A1 (en) * 2006-09-26 2008-03-27 Fujifilm Corporation Method for drying applied film and drying apparatus
WO2011113669A1 (de) * 2010-03-19 2011-09-22 Sms Siemag Ag Verfahren und vorrichtung zum zuführen einer trennlage auf ein metallband
US20120291300A1 (en) * 2011-05-20 2012-11-22 Fih (Hong Kong) Limited Air drying apparatus
EP4394294A4 (de) * 2022-03-10 2025-03-19 Contemporary Amperex Technology (Hong Kong) Limited Trocknungsvorrichtung

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DE2556442C2 (de) * 1975-12-15 1984-09-06 Gerhardt, Hans-Joachim, Prof. M.Sc. Dipl.-Ing., 5100 Aachen Vorrichtung zur schwebend Führung von Warenbahnen
US10401085B2 (en) 2010-09-10 2019-09-03 Durr Megtec, Llc Air bar arrangement for drying tissue on a belt
CN114873344A (zh) * 2022-07-12 2022-08-09 江苏弘奇金属科技有限公司 一种附带自动纠偏功能的pe缠绕膜绕卷装置

Cited By (38)

* Cited by examiner, † Cited by third party
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US3705676A (en) * 1970-03-16 1972-12-12 Overly Inc Air foil conveyor
US3629952A (en) * 1970-11-16 1971-12-28 Overly Inc Airfoil web dryer
US3662476A (en) * 1970-12-30 1972-05-16 Offen & Co Inc B Air flow control structure for web driers
US3722105A (en) * 1971-07-06 1973-03-27 Owens Illinois Inc Apparatus and method for applying radio frequency energy to a moving web of material
US3711960A (en) * 1971-08-26 1973-01-23 Overly Inc Web dryer
US3914477A (en) * 1972-01-04 1975-10-21 Owens Corning Fiberglass Corp Method of coating and drying strands
US3907480A (en) * 1973-01-08 1975-09-23 Robert A Renoux Apparatus for processing thin plastics film
US3982328A (en) * 1974-05-29 1976-09-28 Aktiebolaget Svenska Flaktfabriken Dryer for material coated on two surfaces
US3999696A (en) * 1975-05-27 1976-12-28 Crown Zellerbach Corporation Web threading system
EP0012731A1 (de) * 1978-12-06 1980-06-25 AB Svenska Fläktfabriken Vorrichtung zum Trocknen bahnförmigen Materials
EP0063642A1 (de) * 1981-04-28 1982-11-03 Brückner Trockentechnik GmbH & Co. KG Vorrichtung zur Heissluft-Trocknung von Textilgut
US4474496A (en) * 1983-01-24 1984-10-02 W. R. Grace & Co. Compact dryer for two web stretches
US4674976A (en) * 1984-01-26 1987-06-23 Japan Styrene Paper Corporation Method for the preparation of a foamed article of a polyolefin resin
FR2582090A1 (fr) * 1985-05-16 1986-11-21 Worldwide Converting Mach Secheur a circulation d'air
US4804125A (en) * 1986-03-06 1989-02-14 Hilmar Vits Device for floatably guiding webs of material by means of a gaseous or liquid medium
US4698914A (en) * 1986-05-29 1987-10-13 E. I. Du Pont De Nemours And Company Setting/drying process for flexible web coating
EP0247547A3 (en) * 1986-05-29 1988-12-07 E.I. Du Pont De Nemours And Company Improved setting/drying process for flexible web coating
US4776107A (en) * 1987-10-30 1988-10-11 Wolverine Corporation Web treatment system
WO1990012689A1 (en) * 1989-04-19 1990-11-01 Quad/Tech, Inc. Bernoulli-effect web stabilizer
EP0414125A3 (en) * 1989-08-22 1992-05-20 Hoechst Aktiengesellschaft Process and apparatus for drying a liquid coating applied onto a moving substrate
US5147690A (en) * 1989-08-22 1992-09-15 Hoechst Aktiengesellschaft Process and apparatus for drying a liquid film applied to a moving substrate
US5486236A (en) * 1994-05-06 1996-01-23 Hughes Aircraft Company Accelerated extraction of rolled materials
WO1996018074A1 (en) * 1994-12-06 1996-06-13 W.R. Grace & Co.-Conn. Combination air bar and hole bar flotation dryer
US5647144A (en) * 1994-12-06 1997-07-15 W.R. Grace & Co.-Conn. Combination air bar and hole bar flotation dryer
EP0733870A3 (de) * 1995-03-21 1997-07-16 Grace W R & Co Kontaktlose Schwebetrockner-Bahnführung
EP0870612A3 (de) * 1997-01-15 1999-08-18 PLATSCH, Hans G. Trocknereinheit
US6598315B1 (en) * 1999-06-30 2003-07-29 Metso Paper, Inc. Nozzle arrangement in airborne web-drying and method for improving heat transfer in airborne web-drying
US6431858B1 (en) 2000-02-16 2002-08-13 Lindauer Dornier Gesellschaft Mbh Method and arrangement for supporting a web and avoiding air losses in a heat treating apparatus
EP1132702A3 (de) * 2000-02-16 2001-09-19 Lindauer Dornier Gesellschaft M.B.H Verfahren zum Führen einer Warenbahn und Wärmebehandlungsvorrichtung
US20040251372A1 (en) * 2003-06-12 2004-12-16 Eastman Kodak Company Winding apparatus having Bernoulli guide shoe leading into roller-core nip and method
US6942175B2 (en) 2003-06-12 2005-09-13 Joseph A. Watkins Winding apparatus having Bernoulli guide shoe leading into roller-core nip and method
WO2005116552A1 (de) * 2004-04-30 2005-12-08 Optimags Dr. Zimmermann Gmbh Vorrichtung zum beschichten einer trägerfolie mit einem pharmazeutischen wirkstoff
US20060248745A1 (en) * 2005-05-03 2006-11-09 3M Innovative Properties Company Fixed air knife assembly
US20080075867A1 (en) * 2006-09-26 2008-03-27 Fujifilm Corporation Method for drying applied film and drying apparatus
US8109010B2 (en) * 2006-09-26 2012-02-07 Fujifilm Corporation Method for drying applied film and drying apparatus
WO2011113669A1 (de) * 2010-03-19 2011-09-22 Sms Siemag Ag Verfahren und vorrichtung zum zuführen einer trennlage auf ein metallband
US20120291300A1 (en) * 2011-05-20 2012-11-22 Fih (Hong Kong) Limited Air drying apparatus
EP4394294A4 (de) * 2022-03-10 2025-03-19 Contemporary Amperex Technology (Hong Kong) Limited Trocknungsvorrichtung

Also Published As

Publication number Publication date
DE1938529B2 (de) 1977-02-03
GB1269826A (en) 1972-04-06
DE1938529A1 (de) 1970-01-29
JPS4942149B1 (de) 1974-11-13

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