EP0080448A2 - Trocknungsvorrichtung - Google Patents

Trocknungsvorrichtung Download PDF

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Publication number
EP0080448A2
EP0080448A2 EP82850232A EP82850232A EP0080448A2 EP 0080448 A2 EP0080448 A2 EP 0080448A2 EP 82850232 A EP82850232 A EP 82850232A EP 82850232 A EP82850232 A EP 82850232A EP 0080448 A2 EP0080448 A2 EP 0080448A2
Authority
EP
European Patent Office
Prior art keywords
heat
drying
drying installation
printing ink
members
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.)
Granted
Application number
EP82850232A
Other languages
English (en)
French (fr)
Other versions
EP0080448A3 (en
EP0080448B1 (de
Inventor
Sylve Jack Donald Ericsson
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.)
Svecia Silkscreen Maskiner AB
Original Assignee
Svecia Silkscreen Maskiner AB
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 Svecia Silkscreen Maskiner AB filed Critical Svecia Silkscreen Maskiner AB
Publication of EP0080448A2 publication Critical patent/EP0080448A2/de
Publication of EP0080448A3 publication Critical patent/EP0080448A3/en
Application granted granted Critical
Publication of EP0080448B1 publication Critical patent/EP0080448B1/de
Expired 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
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/28—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun
    • F26B3/283—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun in combination with convection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/0403—Drying webs
    • B41F23/0436—Drying webs using a combination of radiation, conduction or convection

Definitions

  • the present invention relates to a drying installation and preferably to a drying installation which is designed to dry printing ink applied to a material from a printing machine.
  • the drying installation includes a'transport arrangement, comprising a carrier for the material through the drying installation, together with a number of heat-producing members which are intended to dry and/or cure the printing ink applied to the material, and a number of holes or nozzles provided for the passage of air.
  • the invention aims at providing information concerning a drying installation which cannot merely dry the printing ink which is curable by means of infra-red rays or ir-rays, but which can also dry the printing ink which is solvent-based and where drying occurs principally via hot air.
  • the invention is not dependent on the printing machine employed, but on the other hand it should be borne in mind that the present invention can be utilised with advantage when the printing machine comprises a stencil printing machine and where the applied layer of printing ink is thick.
  • the method is already known of arranging various types of drying installations adjacent to printing machines so that by this means it is possible to dry the printing ink applied to a material from the printing machine.
  • the drying process and the drying methods which can be employed are governed by the chemical composition of the ink and the printed-material.
  • the method is already known of bringing about catalyst curing or polymerisation when the printing ink has profit as such that it can cure with the aid of members which emit ultraviolet rays.
  • curing of the printing ink takes place with the aid of "radiation curing” and this signifies that the radiation activates a catalyst in the printing ink and polymerisation of the ink layer (interlinking of molecules) takes place.
  • the present invention relates to a drying installation which is preferably designed to be able to dry printing ink applied to a material from a printing machine and where the drying installation includes a transport arrangement, comprising a carrier of a material through the drying installation, together with a number of heat-producing members which are designed to dry and/or cure the printing ink applied to the material, together with a number of holes or nozzles suitable for passage of air.
  • the present invention indicates that the respective heat-producing members should be arranged so that on the one hand they supply heat to members for heating up the hot air which is arranged to pass through holes or nozzles and by this means be directed towards the transport arrangement, and secondly to supply heat by radiation directed towards the transport arrangement and the printed material resting thereon.
  • the member should preferably be wave-shaped with downward facing portions provided with holes or nozzles and with upward facing portions and adjacent wall portions forming a space containing one or more heat-radiating members, the said space being opened at the bottom facing the transport arrangement. Means which are designed to give off heat from metal to air are provided against the downward facing portions and the adjacent wall portions.
  • the member should preferably be provided with flush downward facing and upward facing portions and flush wall portions.
  • the invention relates to a drying installation where the heat-radiating member comprises one or more members emitting infra-red rays and possibly a reflector.
  • the invention furthermore indicates that an air flow be arranged on each side of the member so as to reduce the temperature rise of the printing ink.
  • the technical advantages which can be perceived as being connected with a drying installation in accordance with the present invention are that heating up of the air employed can take place very rapidly because full power input connected up to the heat radiation members will immediately produce high heat radiation and contribute towards heating up the hot air, because if the heat-radiating members are switched in for a longer period this signifies that heat is transmitted to the member for heating up the hot air and subsequently the power input can be reduced, because the air heated up in this way takes over the task of drying from the heat emitters.
  • Fig. 1 shows in perspective view a drying installation designed for a printing machine, particularly a stencil printing machine, resting on a sub-surface 1.
  • the actual drying installation has been given the reference notation number 2.
  • the drying installation consists of a pedestal 3 supporting a transport arrangement in the form of a transport path which can move in the horizontal plane.
  • This transport path 4 is intended to transport from position "A" sheets provided with printed matter and printing ink or material originating from a printing machine to a position "B" located on a stacking arrangement which is not shown.
  • the sheet or material provided with print are intended to pass through the drying installation 2 so as to dry the printing ink which forms the printed image.
  • drying installation 2 has a number of members, not illustrated in Fig.
  • section 4b As the printed sheet or material is fed from the printing machine at a predetermined height it is essential that the portion of the transport path 4 provided with reference notation 4b be located at a height which permits it to receive the sheet or material provided with print from the printing machine. Hence section 4b has to be fixed. The same can be regarded as applying to section 4c, which is a discharge section of the transport path 4. It should be noted that in Fig. 1 the transport path 4 is placed at a distance "a" from section 3b and particularly a plane 5a defined by the nozzles in section 3b. This spacing "a" must be sufficient to enable the printed material to pass into the drying installation even if the material exhibits considerable height.
  • FIG. 1 shows that section 3b is arranged, via a hinge 8 to be capable of being bent upwards to the position shown by dashed lines for inspection firstly of the transport path, and secondly of the nozzles located on the inside of section 3b, and for cleaning of the reflectors and replacement of the heat-radiating members.
  • a control panel is indicated by reference notation 7.
  • Fig. 2 illustrates in height view and section a portion of a drying installation in which the principle of the invention can be utilised.
  • the drying installation 3 comprises a transport arrangement 4 in the form of a net-shaped path resting on a number of rollers 5 and the transport path 4 with rollers 5 thus provides a carrier for the material 10 when this passes through the drying installation.
  • the embodiment has at least two, in the example illustrated-four, members 16,16a,16b,16c which emit infra-red rays intended to dry and/or cure the printing ink, but naturally the number does not impose any limitation on the function of the invention.
  • Each of the members 16,16a,16b and 16c which emit infra-red rays are located at such a distance from each other that a nozzle for hot air can be orientated between the respective members 16,16a etc.
  • the material and the printing ink can then be exposed firstly to infra-red rays via the member 16 for curing the printing ink 12, and secondly to an air flow via the hot or cold air flow derived from the nozzles 18.
  • a section 17 between member 16b and 16c be designed so that it is possible there to process the material and printing ink with air, for example cooled or heated air. It is also suggested that the air should be capable of passing through special nozzles 18 so as to distribute the flow of air above the surface of the material 10.
  • Fig. 3 illustrates a temperature curve for the upper surface of the layer of ink 12 applied to the material 10 when this passes through the drying installation shown in Fig. 1.
  • the curve "t l " because of the heat,preferably infra-red heat, generated by the members 16 - 16c which emit the infra-red rays.
  • the upper surface of the material 10 will in section 17 be influenced by the air flows from both the nozzles adjacent to a member 16 and in such case there will be a slightly moderated temperature rise in the upper surface of the material as shown by curve "t2".
  • the temperature curve can be reduced further if a flow of cold air is employed.
  • curves "t 1 " and "t 2 " apply to the temperature in the upper surface of the material 10. Concerning the temperature of the material 10, this exhibits essentially the same temperature because the air flow ensures that heat transfer does not take place to the material 10.
  • the present invention is intended particularly to comply with the requirement that the necessary heat transfer be obtained rapidly from the heat-producing and radiating members to the layer of ink 12 which has been applied to the material 10, by this means ensuring rapid drying.
  • each of the heat-radiating members 16 is the effect of each of the heat-radiating members 16, because full power input to each of the heat-radiating members 16 - 16c signifies that these rapidly adopt such a high temperature that the members glow intensely and by this means mainly high infra-red heat radiation takes place direct to the ink-coated section 12a of the material 10 which is positioned below the member.
  • this involves exclusively direct radiation of heat towards the material 10.
  • connection of full power input to the heat-radiating member 16 also results in heat being transmitted to the member 22 for heating up a flow of air 23 which is intended to pass through the holes or nozzles 18, 18' and as a result hot air is directed against the transport path 4 and the material 10 in section 12b.
  • the power input to the heat radiating member 16 can be reduced so that the total effect of heat transfer for sections 12a and 12b is essentially the same, regardless of whether heat transfer is measured directly after the heat-radiating member 16 is switched in or if it is measured after a steady-state condition exists between the hot air and heat radiation.
  • the invention now refers to an embodiment where the member 22 is to be wave-shaped and with downward facing portions 22a provided with holes or nozzles 18, 18'.
  • the member 22 is also provided with upfacing portions 22b and with adjacent wall sections 22c and 22d forming a space 24 which encloses the heat-radiating member 16.
  • the space 24 is open at the bottom facing the transport path 4 so that by this means radiant heat can be transmitted from the member 16 direct to the material 10.
  • means which are not shown in Fig. 4, designed to emit heat from metal to air be provided adjacent to the downward facing portions of the wall portions 22c and 22d.
  • These means can be guide rails or the like.
  • the member 22 is provided with plane downward facing portions 22a and plane upward facing portions 22b together with plane wall portions 22c and 22d.
  • the number of heat-radiating members 16, possibly members 21 emitting ultraviolet rays, and the question as to whether one or more members are to be allocated to each space 24, alternate spaces, or some other distribution, depends on the sphere of application.
  • the present invention also relates to a drying installation of the type described above where a supplementary heat-radiating member comprises a member 21 which emits ultraviolet rays, with a reflector 25.
  • a supplementary heat-radiating member comprises a member 21 which emits ultraviolet rays, with a reflector 25.
  • This is so designed that it can reflect the flow of light also directed away from the transport path 4 towards the transport path4, ie the flow of light which is directed upwards in Fig. 4.
  • the upper portion of the reflector should be provided with an angle-shaped portion 26, the tip of which is orientated towards the member 21 which emits ultraviolet rays and at the side which faces away from the transport path 4. This design ensures that upwardly directed ultraviolet rays are reflected towards the material 4 at the side of the actual member 21.
  • the drying time is short and the temperature rise of the material 10 is restricted, so that the drying process can take place in only one portion, the frontal portion, of the entire length of the drying installation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Drying Of Solid Materials (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
EP19820850232 1981-11-19 1982-11-16 Trocknungsvorrichtung Expired EP0080448B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8106875 1981-11-19
SE8106875A SE8106875L (sv) 1981-11-19 1981-11-19 Torkanleggning

Publications (3)

Publication Number Publication Date
EP0080448A2 true EP0080448A2 (de) 1983-06-01
EP0080448A3 EP0080448A3 (en) 1984-11-28
EP0080448B1 EP0080448B1 (de) 1987-09-09

Family

ID=20345063

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820850232 Expired EP0080448B1 (de) 1981-11-19 1982-11-16 Trocknungsvorrichtung

Country Status (4)

Country Link
EP (1) EP0080448B1 (de)
JP (1) JPS58134751A (de)
DE (1) DE3277232D1 (de)
SE (1) SE8106875L (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990003888A1 (de) * 1988-10-14 1990-04-19 Platsch Hans G Trocknerelement
FR2657421A1 (fr) * 1990-01-19 1991-07-26 David Bernard Appareil de sechage a rayonnement ultra violet.
WO1992007222A2 (en) * 1990-10-11 1992-04-30 Management & Guidance Services Limited Drying apparatus and method
US5517214A (en) * 1993-07-20 1996-05-14 A.B. Dick Company Ink jet image drier
US6312123B1 (en) 1998-05-01 2001-11-06 L&P Property Management Company Method and apparatus for UV ink jet printing on fabric and combination printing and quilting thereby
WO2002018142A1 (de) * 2000-08-31 2002-03-07 Textilma Ag Anlage zur kontinuierlichen herstellung bedruckter textilbänder, insbesondere bedruckter etikettenbänder
US6726317B2 (en) 1999-09-03 2004-04-27 L&P Property Management Company Method and apparatus for ink jet printing
CN100449294C (zh) * 2001-03-27 2009-01-07 莱卡生物系统努斯洛赫有限责任公司 用于烘干基于溶剂的墨汁的装置
EP3363635A1 (de) * 2017-02-08 2018-08-22 Ricoh Company, Ltd. Infraroterwärmte luftmesser für trockner
WO2020222806A1 (en) 2019-04-30 2020-11-05 Hp Scitex Ltd. Print agent drying apparatus

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63319152A (ja) * 1987-06-24 1988-12-27 Kondo Unyu Kiko Kk 印刷紙の乾燥装置
JPH0632031U (ja) * 1993-08-06 1994-04-26 近藤運輸機工株式会社 印刷紙の乾燥装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3720002A (en) * 1970-03-19 1973-03-13 Wiggins Teape Res Dev Drying sheet material
CH581813B5 (de) * 1974-11-28 1976-11-15 Lugoj Ind Textila
DE2731075A1 (de) * 1977-07-09 1979-01-25 Eugen Knobel Durchlaufofen fuer warenbahnen

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55124658A (en) * 1979-03-20 1980-09-25 Oak Seisakusho:Kk Drier for ultraviolet curing type printing ink

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3720002A (en) * 1970-03-19 1973-03-13 Wiggins Teape Res Dev Drying sheet material
CH581813B5 (de) * 1974-11-28 1976-11-15 Lugoj Ind Textila
DE2731075A1 (de) * 1977-07-09 1979-01-25 Eugen Knobel Durchlaufofen fuer warenbahnen

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990003888A1 (de) * 1988-10-14 1990-04-19 Platsch Hans G Trocknerelement
US5159763A (en) * 1988-10-14 1992-11-03 Platsch Hans G Drying elements
FR2657421A1 (fr) * 1990-01-19 1991-07-26 David Bernard Appareil de sechage a rayonnement ultra violet.
WO1992007222A2 (en) * 1990-10-11 1992-04-30 Management & Guidance Services Limited Drying apparatus and method
WO1992007222A3 (en) * 1990-10-11 1992-05-29 Management & Guidance Services Drying apparatus and method
US5517214A (en) * 1993-07-20 1996-05-14 A.B. Dick Company Ink jet image drier
US6312123B1 (en) 1998-05-01 2001-11-06 L&P Property Management Company Method and apparatus for UV ink jet printing on fabric and combination printing and quilting thereby
US6467898B2 (en) 1999-09-03 2002-10-22 L&P Property Management Company Method and apparatus for ink jet printing on textiles
US6702438B2 (en) 1999-09-03 2004-03-09 L&P Property Management Company Method and apparatus for ink jet printing on textiles
US6726317B2 (en) 1999-09-03 2004-04-27 L&P Property Management Company Method and apparatus for ink jet printing
WO2002018142A1 (de) * 2000-08-31 2002-03-07 Textilma Ag Anlage zur kontinuierlichen herstellung bedruckter textilbänder, insbesondere bedruckter etikettenbänder
US7029111B2 (en) 2000-08-31 2006-04-18 Textilma Ag Unit for the continuous production of printed textile strips, in particular printed label strips
CN100449294C (zh) * 2001-03-27 2009-01-07 莱卡生物系统努斯洛赫有限责任公司 用于烘干基于溶剂的墨汁的装置
EP3363635A1 (de) * 2017-02-08 2018-08-22 Ricoh Company, Ltd. Infraroterwärmte luftmesser für trockner
US10308010B2 (en) 2017-02-08 2019-06-04 Ricoh Company, Ltd. Infrared-heated air knives for dryers
WO2020222806A1 (en) 2019-04-30 2020-11-05 Hp Scitex Ltd. Print agent drying apparatus

Also Published As

Publication number Publication date
DE3277232D1 (en) 1987-10-15
JPS58134751A (ja) 1983-08-11
EP0080448A3 (en) 1984-11-28
SE8106875L (sv) 1983-05-20
EP0080448B1 (de) 1987-09-09

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