US3871326A - Coating material recovering device for air knife type coating apparatus - Google Patents

Coating material recovering device for air knife type coating apparatus Download PDF

Info

Publication number
US3871326A
US3871326A US371796A US37179673A US3871326A US 3871326 A US3871326 A US 3871326A US 371796 A US371796 A US 371796A US 37179673 A US37179673 A US 37179673A US 3871326 A US3871326 A US 3871326A
Authority
US
United States
Prior art keywords
coating material
separating
chamber
air
web
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US371796A
Other languages
English (en)
Inventor
Masao Kanda
Akio Watanabe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Application granted granted Critical
Publication of US3871326A publication Critical patent/US3871326A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/74—Applying photosensitive compositions to the base; Drying processes therefor
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/74—Applying photosensitive compositions to the base; Drying processes therefor
    • G03C2001/7403—Air jets

Definitions

  • a separating plate is located downstream from the air jet flow blown from a slit-like nozzle after the air jet flow has contacted the surface of a web carrying excess coating material and removed the same.
  • a separating chamber is defined below the separating plate for collecting the excess coating material contained in the air jet flow. Additional separating chambers can be provided for better separation.
  • a means for guiding the air jet flow from which the coating material has been removed is also provided.
  • This invention relates to coating apparatus for applying a coating material to a travelling web such as paper, plastic film and the like, more particularly, to a device for recovering the coating material in coating apparatus of the air-knife type.
  • the air knife type coating apparatus is a continuous coating apparatus employing a slit shape d air jet nozzle for blowing away excessive coating material applied on the surface ofthetravelling web by a coating means such as a coating roll, a coating slit and the like for making a smooth coating surface on the web.
  • the coating material recovering device recovers the excessive coating material blown away by the air jet nozzle and separates the coating material from the air and discharges the air into the atmosphere.
  • FIGS. 1 to 4 Some conventional coating material recovering devices are shown in FIGS. 1 to 4, in which conventional devices as disclosed in US. Pat. Nos. 3,229,447; 3,397,673; 3,550,553 and Japanese Utility Model Publn. 33023/1971 are shown.
  • a travelling web h is fed in contact with a coating rollj by means of a holder roll i and excess coating material picked up from a coating pan l is applied to the web.
  • the coated web m is fed around a backing roll n and an air jet flow (I is blown thereonto from a slit-like nozzle b of an air doctor a.
  • a separating plate g is provided downstream of the air jet flow (1 (which includes excess coating material c blown away by the air jet) for directing the air jet flow d toward a comparative long guide plate e.
  • the coating material is mixed with the jet air flow while the flow is guided along the guide plate e up to a coating material collecting portion f, and particles of coating material are scattered by the air jet flow causing clogging of the air doctor and roughness in the thickness of the coated layer. Further, upon the scattering of coating material the air around the apparatus is contaminated and the life of the apparatus is shortened. The contaminated air is, of course, harmful to the health of the operators of the coating apparatus, and the loss of the coating material due to the scattering of the coating material reduces the efficiency of recovery of the coating material. This is economically a great loss in the operation of the coating apparatus.
  • the principal object of the present invention is to provide a device which effectively recovers excess coating material blown from the surface of a web by an air-jet flowin an air knife type coating apparatus.
  • Another object of the present invention is to provide a device which effectively separates the coating material from the air flow blown from the air jet nozzle and discharges clean air into the atmosphere.
  • Still another object of the present invention is to provide a device which prevents fine particles ofthe coating material created during the air knife operation of an air knife type coating apparatus from escaping into the atmosphere.
  • a further object of the present invention is to provide a coating material recovering device having a simple interior construction which can easily be cleaned by an operator of the coating apparatus.
  • a still further object of the present invention is to provide a coating apparatus in which the scattering of the coating material staining the slit nozzle of an air doctor is prevented to obtain a smooth surface and uniform thickness of the coated layer.
  • Yet a further object of the present invention is to provide a coating material recovering device particularly adapted to be used in a high speed air knife type coating apparatus.
  • the coating material recovering device in accordance with the present invention is provided with a first fluid-air separator and a second fluid-air separator to effectively separate the coating material from the air.
  • the first separator comprises a separating plate which separates the particles of the liquid coating material from the air jet flow utilizing the difference in inertial moment thereof by use of the tip end of the separating plate.
  • the second separator is a means for utilizing the negative pressure made by the air jet flow or suction pressure made by a suction fan to form a second air flow blowing into the coating material recovering portion of the apparatus to direct the air in a different direction.
  • the coating material recovering device is provided with a third separator to enhance the effect of separation of fluid and air.
  • FIGS. 1 4 are sectional views of coating material recovering devices of conventional air-knife coating apparatus
  • FIG. 5 is a schematic side view showing the arrangement of the apparatus in accordance with the present invention.
  • FIG. 6 is a vertical sectional view of one coating material recovering device in accordance with the present invention.
  • FIG. 7 is a side elevational view of the same
  • FIG. 8 is a vertical sectional view of a coating material recovering device in accordance with another embodiment of the present invention.
  • FIG. 9 is a vertical sectional view of the coating material recovering device in accordance with still another embodiment of the present invention.
  • FIG. 5 showing the overall arrangement of the apparatus of the present invention
  • a continuously travelling web 1 is brought into contact with a coating roll 3 by use of a holder roll 2 and fed around a backing roll 7, where excess coating material applied on the surface of the web 6 by means of a coating pan filled with coating material 4 is blown from the surface of the web 6 by means of a high speed airjet flow ejected from a slit-shaped nozzle 9 of an air doctor 8.
  • a web bearing a coating layer of the predetermined thickness is obtained.
  • the coating material blown away from the surface of the coated web 10 by means of the air jet flow is collected by a coating material recovering device 100 which has a pair of ducts 101, 102 provided with dampers 103, 104 for controlling the distribution of air or the flow rate through the coating recovering device 100.
  • the ducts 101 and 102 communicate with a single duct 105 which in turn is connected with a fine particle removing device 106 which removes extremely fine particles by use of a water shower.
  • the fine particle removing device 106 is connected with a suction fan 107 which pulls the air jet through damper 108, which in turn controls the pulling pressure to provide optimum coating conditions such as coating speed, amount of coating material and so forth.
  • FIGS. 6 and 7 A preferred embodiment of the present invention is shown in FIGS. 6 and 7.
  • a travelling web 1 is fed around a holder roll 2 and brought into contact with a coating roll 3 thereby so that the coating material 4 in a coating material pan 5 is applied to the surface of the web 1 forming a coated web 6.
  • the web 6, bearing excess coating material is further fed around a backing roll 7 where the web 6 is subjected to a high speed air jet flow ejected from the slit-like nozzle 9 of the air doctor 8 so that the excess coating material is blown off the surface of the web 6 to provide a web 10 bearing a predetermined thickness of the coating material.
  • the coating material removed from the surface of the web 6 by the high speed air jet flow ejected through the slit nozzle 9 of the air doctor 8 is discharged into the atmosphere together with the air jet fiow through a coating material recovering device, in which the flow 11 mainly composed of coating material is first divided into air and coating material in the first separating chamber 13.
  • the air flow including the coating material in the shape of particles flows along a separating plate 12 and the coating material of large specific gravity falls downward from the lower end ofthe separating plate 12 into the first separating chamber 13.
  • the air which comes down behind the first separating plate 12 moves slowly in the first separating chamber 13, during which time the fine coating material component thereof falls down into the collected coating material on the bottom of the first separating chamber 13.
  • the air jet flow 15 flowing downward along the separating plate 12 advances further below the separating plate 12. Thus, the first separation ofthe air from the coating material is completed.
  • a part of the excessive coating material mingled in the air jet flow is particulated into fine particles and guided into the second separating chamber 17 together with the air jet flow 15.
  • the air jet flow 15 containing fine particles and flowing along the separating plate 12 hits the wall 16 of the device and moves downward along the interior surface of the wall 16 into the second separating chamber 17 provided downstream the guide wall 16.
  • the air jet flow containing fine particles 18 is lowered in speed when the flow comes into the chamher 17.
  • particles of a comparatively large specific gravity 19 are collected on the bottom of the second separating chamber 17.
  • the coating material 20 collected on the bottom of the second separating chamber 17 is discharged through a discharge port 21.
  • the fields of use of the apparatus present invention are not limited in any manner whatsoever, and it can be used to recover substantially any commonly coated material which is amenable to air knife coating, including separating fine particles as small as on the order of several microns from particles of a comparatively high specific gravity, for instance, in the range of 0.3 to 3.
  • the air jet flow 22 containing an extremely small amount of fine particles advances along the interior surface of an outer wall 23 opposite to wall 16 and hits the bottom wall 24 of the first separating chamber 13 and changes its direction of advancement and is guided into a third separating chamber 27 defined by internal walls 25 and 26.
  • a part of the coating material having a comparatively large specific gravity 29 is collected on the bottom of the third chamber and is discharged out of discharge port 30.
  • clean air from which the coating material has been removed is dishcarged from duct 31 provided on the side wall of the third separating chamber 27.
  • a container 32 forming the third separating chamber 27 is fixed to a frame 33 and the body portion 34 of the coating material recovering device 34 is made movable on a rail 37 with wheels 35 and 36 provided thereon from the position shown in H6. 6 to the left, external covers 38 and 39 and an internal cover 40 can be easily removed together with side cover 41 to make the cleaning of the coating material recovering device easy.
  • FIG. 7 is a side elevation of the coating material recovering device in accordance with the present invention as shown in FIG. 6, in which a travelling web 1 is brought into contact with a coating roll 3 by means of a holder roll 2 and a coating material is applied onto the surface of the web from a coating material pan 5.
  • the web 6 coated with the coating material is fed around a backing roll 7, where a high speed air jet flow ejected from a slit nozzle 9 of the air doctor 8 is blown against the surface of the web 6 fed around the backing roll 7 to remove excess coating material and the air jet flow flows along a separating plate 12 and the coating material is discharged from discharging port 14 and recovered.
  • the separating plate 12 is moved by an air cylinder 43 provided on a side plate 42 of the coating material recovering device by way of a crank 44 to control the spacing between the end of the separting plate 12 and the backing roll 7.
  • the spacing is selected by adjusting a stopper 45 which restricts the movement of the crank 44.
  • side covers 41 On both sides of the coating material recovering device on the end plates 42 are provided side covers 41 having a duct communicating opening 31, respectively, to discharge air which has been cleaned through the first, second and third separating chambers.
  • the side covers 41 are easily removable for cleaning the interior of the coating material recovering device.
  • exterior covers 38 and 39 are made removable and the whole body 34 of the device is made horizontally slidable on the rail 37 (leaving the second separating chamber 17).
  • FIG. 8 Another embodiment is shown in FIG. 8, wherein a continuously travelling web 6 carrying excess coating material is fed around a backing roll 7.
  • a high speed air jet flow is ejected from a slit-like nozzle 9 of an air doctor 8 and blown against the surface of the'web 6 travelling around the backing roll 7 to remove excess coating material 50 therefrom.
  • the coating material 50 blown off the web 6 flows along a separating plate 52 together with the air jet 51.
  • the coating material 50 having a comparatively large specific gravity is introduced into the first separating chamber 53 and discharged from the device through discharge port 54 and pipe 55 for recovery.
  • the air jet 51 flows along the separating plate 52 down to the second separating chamber 59.
  • the second separating chamber 59 which is provided for collecting the liquid particles 57 without obstructing the flow of the air jet 58.
  • the particles collected in the second chamber 59 are discharged from the device for recovery.
  • Reference numerals 60 and 61 respectively, indicate third and fourth separating chambers defined by partitions 62 and 63 and outer walls 64 and 65 which collect the coating material 66 and 67 and discharge the collected material out of the device through discharging ports 68 and 69, respectively.
  • the air cleaned through the first to fourth separating effect is discharged into the atmosphere through a duct 70.
  • FIG. 9 Another embodiment of the present invention is shown in FIG. 9, wherein a coated web 6 travelling around a backing'roll 7 is subject to an air jet flow ejected from a slit-like nozzle 9 of an air doctor 8 and coating material 80 is blown from the coated surface of the web 6 and guided along a separation plate 82 together with the air jet 81.
  • the coating material 80 is introduced into a first separating chamber 83 located behind the separating plate 82.
  • the collected coating material in the first separating chamber 83 is discharged from the device through a discharge port 84 and a pipe 85 for recovery.
  • the air jet flow 81 flows along the surface of a partition 86 extending downstream from the separating plate 82 and goes into a second separating chamber 89 formed by the partition 86 and the outer portion 87, 88 for separation of fine particles 90 which have not been collected in the first separating chamber 83.
  • the collected fine particles 90 are discharged from the discharge port 91 into the air, and the clean air 92 is discharged through a duct 93.
  • removing and recovering excess coating material from a web coated in an air knife coating apparatus said removing and re- 6 covering apparatus comprising:
  • a separating plate adjacent said web extending transversely to the flow path of the flowing'gas stream containing the excess coating material downstream of the contact area of the flowing gas stream with the web for separating excess coating material from the flowing gas stream;
  • said first chamber includes chamber wall means to the side of said separating plate opposite the means applying the flowing gas stream, spaced from said plate and extending from said drip pan to the vicinity of said web to form with said drip pan and said separating plate a volume in which separated air moves slowly downwardly behind the separating plate to cause the fine coating material component thereof to gravity deposit into said underlying drip pan; and wherein f. said separating plate is positioned with respect to said gas stream, said web and said drip pan such that the flowing gas stream does not directly enter said first chamber and re entrain substantial amounts of already separated coating material during gravity deposit from said separating plate into said drip pan.
  • Apparatus as defined in claim 1 further comprising wall means disposed generally in line with said separating plate, and extending downwardly from said drip pan in the direction of flow of said gas stream after deflection by said separating plate to guide the air downstream of said first chamber, and said apparatus further comprising additional liquid collecting means, said means comprising a trough located on said guide wall at a location which does not obstruct the flow of air along said guide wall.
  • Apparatus as defined in claim 1 further comprising means for discharging the air jet flow from said apparatus after the coating material has been removed, said discharging means being provided on at least one side of said apparatus for discharging said air flow into the atmosphere.
  • Apparatus as defined in claim 1 further comprising a second separating chamber provided downstream and below said first separating chamber including coating material collecting means at the bottom portion thereof, said second chamber being separable from said first separating chamber, and wherein said first separating chamber includes wheels operatively coupled thereto for moving said first chamber laterally relative to said underlying separating chamber and said apparatus further comprising means for fixing said second separating chamber to a stationary base member upon

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Coating Apparatus (AREA)
  • Paints Or Removers (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
US371796A 1972-06-21 1973-06-20 Coating material recovering device for air knife type coating apparatus Expired - Lifetime US3871326A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6148072A JPS5610109B2 (es) 1972-06-21 1972-06-21

Publications (1)

Publication Number Publication Date
US3871326A true US3871326A (en) 1975-03-18

Family

ID=13172266

Family Applications (1)

Application Number Title Priority Date Filing Date
US371796A Expired - Lifetime US3871326A (en) 1972-06-21 1973-06-20 Coating material recovering device for air knife type coating apparatus

Country Status (6)

Country Link
US (1) US3871326A (es)
JP (1) JPS5610109B2 (es)
CA (1) CA987488A (es)
DE (1) DE2331521A1 (es)
ES (1) ES416063A1 (es)
GB (1) GB1439960A (es)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4067018A (en) * 1975-08-27 1978-01-03 Xerox Corporation Excessive magnetic developer displacement system
US4157903A (en) * 1977-04-11 1979-06-12 Fuji Photo Film Co., Ltd. Separation and recovery apparatus for solid or liquid particles entrained in a flowing gas mixture
US4416919A (en) * 1980-05-21 1983-11-22 Agfa-Gevaert Aktiengesellschaft Method and an apparatus for removing thickenings in coatings occurring transversely to the direction of travel of the web
US5958512A (en) * 1996-12-19 1999-09-28 Avery Dennison Corporation Method and apparatus for selectively removing or displacing a fluid on a web
US20020127332A1 (en) * 2001-03-06 2002-09-12 Nordson Corporation Method and apparatus for powder coating hollow objects
US6521101B1 (en) * 1995-11-04 2003-02-18 The Regents Of The University Of California Method for fabricating beryllium-based multilayer structures
US20090032068A1 (en) * 2002-06-13 2009-02-05 Applied Materials, Inc. Single wafer method and apparatus for drying semiconductor substrates using an inert gas air-knife
US9162245B1 (en) 2012-03-29 2015-10-20 BTD Wood Powder Coating, Inc. Powder coating conveyor support
US20180001616A1 (en) * 2015-01-23 2018-01-04 Hewlett-Packard Indigo B.V. Roller arrangement, a method of forming a pattern, a method of printing a pattern and apparatus for printing a pattern
CN108943965A (zh) * 2018-06-02 2018-12-07 江阴瑞兴科技有限公司 一种卷材表面的无溶剂卷涂离线免烘烤固化工艺及装置

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5862408A (ja) * 1981-10-09 1983-04-13 Nippon Gakki Seizo Kk 液体燃料燃焼装置
JPS5865758U (ja) * 1981-10-28 1983-05-04 日本電気ホームエレクトロニクス株式会社 電池
JP2583656Y2 (ja) * 1993-02-04 1998-10-27 石川島播磨重工業株式会社 ブレードコータ
JP2002301419A (ja) * 2001-04-06 2002-10-15 Mitsubishi Heavy Ind Ltd ブレードコータおよび塗工液の回収方法
CN110738920B (zh) * 2019-10-25 2021-09-24 浙江索凡胶粘制品有限公司 一种不干胶制品复合方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2679231A (en) * 1951-09-07 1954-05-25 John Waldron Corp Web coating apparatus
US3229447A (en) * 1962-03-12 1966-01-18 Midland Ross Corp Method for the control of exhaust air and/or web coating spray
US3397673A (en) * 1966-02-14 1968-08-20 Beloit Corp Air knife coating pan
US3550553A (en) * 1968-06-07 1970-12-29 Beloit Corp Air knife coating pan
US3611987A (en) * 1969-09-08 1971-10-12 Kohler Coating Machinery Corp Paper coater blowoff apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2679231A (en) * 1951-09-07 1954-05-25 John Waldron Corp Web coating apparatus
US3229447A (en) * 1962-03-12 1966-01-18 Midland Ross Corp Method for the control of exhaust air and/or web coating spray
US3397673A (en) * 1966-02-14 1968-08-20 Beloit Corp Air knife coating pan
US3550553A (en) * 1968-06-07 1970-12-29 Beloit Corp Air knife coating pan
US3611987A (en) * 1969-09-08 1971-10-12 Kohler Coating Machinery Corp Paper coater blowoff apparatus

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4067018A (en) * 1975-08-27 1978-01-03 Xerox Corporation Excessive magnetic developer displacement system
US4157903A (en) * 1977-04-11 1979-06-12 Fuji Photo Film Co., Ltd. Separation and recovery apparatus for solid or liquid particles entrained in a flowing gas mixture
US4416919A (en) * 1980-05-21 1983-11-22 Agfa-Gevaert Aktiengesellschaft Method and an apparatus for removing thickenings in coatings occurring transversely to the direction of travel of the web
US6521101B1 (en) * 1995-11-04 2003-02-18 The Regents Of The University Of California Method for fabricating beryllium-based multilayer structures
US5958512A (en) * 1996-12-19 1999-09-28 Avery Dennison Corporation Method and apparatus for selectively removing or displacing a fluid on a web
US20020127332A1 (en) * 2001-03-06 2002-09-12 Nordson Corporation Method and apparatus for powder coating hollow objects
US6827780B2 (en) * 2001-03-06 2004-12-07 Nordson Corporation Method and apparatus for powder coating hollow objects
US20050037151A1 (en) * 2001-03-06 2005-02-17 Nordson Corporation Method and apparatus for powder coating hollow objects
US20090032068A1 (en) * 2002-06-13 2009-02-05 Applied Materials, Inc. Single wafer method and apparatus for drying semiconductor substrates using an inert gas air-knife
US20090044839A1 (en) * 2002-06-13 2009-02-19 Applied Materials, Inc. Single wafer method and apparatus for drying semiconductor substrates using an inert gas air-knife
US8322045B2 (en) 2002-06-13 2012-12-04 Applied Materials, Inc. Single wafer apparatus for drying semiconductor substrates using an inert gas air-knife
US9162245B1 (en) 2012-03-29 2015-10-20 BTD Wood Powder Coating, Inc. Powder coating conveyor support
US20180001616A1 (en) * 2015-01-23 2018-01-04 Hewlett-Packard Indigo B.V. Roller arrangement, a method of forming a pattern, a method of printing a pattern and apparatus for printing a pattern
US10507642B2 (en) * 2015-01-23 2019-12-17 Hp Indigo B.V. Roller arrangement, a method of forming a pattern, a method of printing a pattern and apparatus for printing a pattern
US10800161B2 (en) 2015-01-23 2020-10-13 Hp Indigo B.V. Roller arrangement, a method of forming a pattern, a method of printing a pattern and apparatus for printing a pattern
CN108943965A (zh) * 2018-06-02 2018-12-07 江阴瑞兴科技有限公司 一种卷材表面的无溶剂卷涂离线免烘烤固化工艺及装置

Also Published As

Publication number Publication date
GB1439960A (en) 1976-06-16
JPS5610109B2 (es) 1981-03-05
JPS4921423A (es) 1974-02-25
CA987488A (en) 1976-04-20
DE2331521A1 (de) 1974-01-17
ES416063A1 (es) 1976-03-01

Similar Documents

Publication Publication Date Title
US3871326A (en) Coating material recovering device for air knife type coating apparatus
CA2469292C (en) Method and apparatus for curtain coating
CA2598114C (en) Device for separating wet paint overspray
US2752003A (en) Filter with continuous web filter medium
US3699748A (en) Wet scrubber dust collector
US3803997A (en) Particle collecting device
IT9020733A1 (it) Dispositivo per l'applicazione continua di rivestimenti sottovuoto
US3229447A (en) Method for the control of exhaust air and/or web coating spray
US8342641B2 (en) Ink separators
JPH08508676A (ja) ペーパーウェブ上の被覆の途切れの最小化方法
US5146868A (en) Self contained recirculating powdering a vacuuming assembly
US3485210A (en) Size applicator
CN114290813B (zh) 一种打印机用废液回收装置
US1930814A (en) Powdering apparatus
JP2003191444A (ja) 印刷機
US3397673A (en) Air knife coating pan
US3648439A (en) Buoyant filter mass
US4018303A (en) Oil mist lubricator for metal tape
US2383138A (en) Air cleaner
US3550553A (en) Air knife coating pan
JPS58224167A (ja) 真空蒸着装置
JPH0531419A (ja) 塗装設備のウオーターカーテン装置
JP2002301419A (ja) ブレードコータおよび塗工液の回収方法
JP2010104921A (ja) 排気装置及び塗装作業用装置
JPH0318186Y2 (es)