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EP0295427B1 - Verfahren und Vorrichtung zum Aufbringen einer Flächenpressung auf pressbandgetriebene Werkstücke - Google Patents

Verfahren und Vorrichtung zum Aufbringen einer Flächenpressung auf pressbandgetriebene Werkstücke Download PDF

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Publication number
EP0295427B1
EP0295427B1 EP88107536A EP88107536A EP0295427B1 EP 0295427 B1 EP0295427 B1 EP 0295427B1 EP 88107536 A EP88107536 A EP 88107536A EP 88107536 A EP88107536 A EP 88107536A EP 0295427 B1 EP0295427 B1 EP 0295427B1
Authority
EP
European Patent Office
Prior art keywords
pressure
belt
forced movement
medium
pressure medium
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
EP88107536A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0295427A1 (de
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.)
Theodor Hymmen KG
Original Assignee
Theodor Hymmen KG
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 Theodor Hymmen KG filed Critical Theodor Hymmen KG
Priority to AT88107536T priority Critical patent/ATE69579T1/de
Publication of EP0295427A1 publication Critical patent/EP0295427A1/de
Application granted granted Critical
Publication of EP0295427B1 publication Critical patent/EP0295427B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B5/00—Presses characterised by the use of pressing means other than those mentioned in the preceding groups
    • B30B5/04—Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of an endless band
    • B30B5/06—Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of an endless band co-operating with another endless band
    • B30B5/062—Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of an endless band co-operating with another endless band urged by directly-acting fluid pressure

Definitions

  • the invention relates to a method and to an apparatus for applying a surface pressure to workpieces driven by a press belt, in which or in which is sealed in a circumferential manner, on one side by a pressure and heating or cooling plate and on the other side by one Press belt limited pressure chamber the pressure is generated by a fluid pressure medium.
  • the surface pressure is generated by the pressure of a gaseous or liquid pressure medium in a sealed effective zone defined on one side by the press belt.
  • the pressure chamber can be delimited by a circumferential, generally square-shaped seal.
  • the pressure chamber itself is limited on the one hand by the rotating press belt and on the back by a pressure plate, which is also a heating plate, so that the pressure medium in the effective zone can also be heated, since usually the belt presses equipped with such pressure chambers, for example double belt presses, also require heating and / or cooling of the leading workpieces.
  • fluid pressure media such as air or oil
  • fluid pressure media are easy to handle, manageable and sensitive the setting is particularly suitable.
  • the problem remains that the pressure medium located in the effective zone between the rear of the heating plate and the endless press belt has an insulating effect on the heat transfer in the pressure chamber.
  • Attempts have been made (DE-A-24 21 296) to replace gaseous pressure media which are even more insulating with a liquid, in particular oil or liquid metals. While liquid metals have proven technically difficult to control for this purpose and in this area of application, the use of oil has not brought about any drastic improvement, since the thermal conductivity of oil only reaches a maximum of three times the thermal conductivity of air and, in addition, considerable pollution problems may occur.
  • the radiation heating devices arranged in the pressure chamber have a longer reheating time, so that when the press belts are at a standstill, special measures must be taken for cooling the press belts.
  • air channels are provided in the walls of the pressure plates that delimit the pressure chamber on the inside in the belt running direction, which are laterally covered on the pressure chamber side, whereby inlet and outlet openings are made possible in the vicinity of the belt to allow cooling air to flow transversely to the belt running direction.
  • This reference therefore essentially deals with the cooling of the press belt during the period of an interruption in operation.
  • the invention has for its object to improve the heat transfer from the heated pressure plate to the press belt or during cooling from the press belt to the cooled pressure plate during the operating time of the press and the heat transfer capacity between the pressure plate and the workpiece can be controlled at an operating pressure specified for the pressure chamber close.
  • This object is achieved in the method of the type mentioned in that the heat transfer from the heating plate to the press belt or from the press belt to the cooling plate by a forced movement of the Pressure medium is increased in the pressure chamber, the pressure medium being moved at flow rates of 2 to 50 m / sec, preferably 20 to 40 m / sec for gaseous and 4 to 5 m / sec for liquid pressure media, the extent of the heat transfer capacity of the pressure medium over the Operating pressure and the flow rate is controlled, and that the forced movement of the pressure medium is terminated when the press belt is at a standstill.
  • the pressure medium acts only as a mediator or as an intermediate layer with a very high heat transfer value due to the forced movement.
  • the pressure medium acts as an insulation layer between the heating plate and the press belt in the effective zone by switching off the forced movement.
  • Movement speeds of 10 to 50, preferably 20 to 40 m / sec have proven to be very useful for gaseous pressure media and those of 2 to 5, preferably 4 to 5 m / sec have proven to be very useful for liquid pressure media.
  • a rotating press belt 1 which runs over deflection rollers 2 and continuously moves workpieces 3, such as material webs, also in the form of laminates , namely along an active zone 4, which in the exemplary embodiment shown is formed by a pressure chamber which is delimited on one side by the press belt 1 and on the opposite side by a pressure and heating plate 5 and also known circumferential special seals 6.
  • workpieces 3 such as material webs, also in the form of laminates , namely along an active zone 4, which in the exemplary embodiment shown is formed by a pressure chamber which is delimited on one side by the press belt 1 and on the opposite side by a pressure and heating plate 5 and also known circumferential special seals 6.
  • the required surface pressure in a known manner by a z. B. gaseous, under the operating pressure pressure medium.
  • the pressure chamber is connected in the usual way to a compressor (not shown), which also continuously compensates for any leakage losses.
  • a heating device 7 is located in the pressure and heating plate.
  • a forced movement device is now provided for the pressurized gaseous medium in the active zone.
  • the pressure and heating plate 5 is dimensioned relatively large and a fan 8 is integrated in it, which is connected to the active zone 4 via an integrated pressure and suction line 9 and the pressurized gaseous pressure medium in the active chamber 4 violently forced, preferably like this strong that a turbulent flow occurs here, which leads to an extremely high heat transfer between the pressure and heating plate 5 and the press belt 1.
  • the extent of the heat transfer can be regulated very sensitively both via the operating pressure and in particular via the flow rate.
  • care is taken, for example, in a very simple manner for greater heating on a first section of the active zone 4, as seen in the direction of passage of the workpiece 3, that here the active zone 4 or the pressure chamber is protruding from a rear section Shoulder in the pressure and heating plate 5 has a narrowed cross-section, so that an increased flow rate occurs in this first work zone section 4a.
  • a pressure and heating plate 5a is provided with basically the same device structure, which, depending on the length of the active zone 4, is assigned one or more, in the exemplary embodiment shown 2, forced movement devices in the form of fans 8a, the rotating blades 8b of which are flat blades are formed and extend at least partially into the active zone 4.
  • FIG. 3 which also has the same basic structure, a front pressure and heating plate 5b is shown, in which for reasons of space, inlets and outlets 10 from the active zone 4 under the pressure and heating plate 5b are brought out.
  • the fan 8 is switched on in the lines 10 and the compressor 11 is also connected, with which leakage losses can also be continuously supplemented.
  • the operating pressure z. B. gaseous pressure medium is also directly heated in the active zone 4 and its violent forced movement in this active zone 4 also causes the extraordinary increase in heat transfer capacity.
  • an effective zone 4a can be connected to the effective zone 4 by heating the press belt 1 and thus the workpiece 3, which zone basically has exactly the same structure, only the direction of heat transfer being reversed here, i.e. one Cooling zone is formed, in which the pressure and cooling plate 5c is provided with a cooling device 7a.
  • the gaseous medium under pressure is forcefully moved in the active zone 4a for an extraordinary increase in the cooling capacity, for which purpose a fan 8 is again provided.
  • a compressor 11 is also provided here.
  • a rotary piston blower or a compressor can also be used as the forced movement device.
  • the method according to the invention consists in that, in the sealed active zone 4, 4a, the surface pressure is generated by the pressure of a fluid pressure medium and the active zone 4, 4a is heated or cooled to apply a surface pressure and to transfer heat to the press belt-driven workpieces and that in addition the pressure medium under operating pressure is forced to move violently in the effective zone, the expedient movement being carried out so violently in an expedient embodiment that there is pressure in the effective zone for the under operating pressure standing pressure medium result in turbulent flows.
  • Flow velocities of approx. 20 to 40 m / sec for gaseous pressure media and 4 to 5 m / sec for liquid pressure media have proven to be very useful.
  • the violent forced movement can only take place on site in the effective zone.
  • a forced circulation can also be provided in a closed circuit, including the active zone.
  • the degree of heat transfer can be sensitively regulated by changing the flow rate and / or the pressure of the pressure medium.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Laminated Bodies (AREA)
  • Saccharide Compounds (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Paper (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Coating Apparatus (AREA)
  • Labeling Devices (AREA)
EP88107536A 1987-06-15 1988-05-11 Verfahren und Vorrichtung zum Aufbringen einer Flächenpressung auf pressbandgetriebene Werkstücke Expired - Lifetime EP0295427B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88107536T ATE69579T1 (de) 1987-06-15 1988-05-11 Verfahren und vorrichtung zum aufbringen einer flaechenpressung auf pressbandgetriebene werkstuecke.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873719976 DE3719976A1 (de) 1987-06-15 1987-06-15 Verfahren und vorrichtung zum aufbringen einer flaechenpressung auf pressbandgetriebene werkstuecke
DE3719976 1987-06-15

Publications (2)

Publication Number Publication Date
EP0295427A1 EP0295427A1 (de) 1988-12-21
EP0295427B1 true EP0295427B1 (de) 1991-11-21

Family

ID=6329757

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88107536A Expired - Lifetime EP0295427B1 (de) 1987-06-15 1988-05-11 Verfahren und Vorrichtung zum Aufbringen einer Flächenpressung auf pressbandgetriebene Werkstücke

Country Status (13)

Country Link
US (2) US5558016A (fi)
EP (1) EP0295427B1 (fi)
JP (2) JPH0191998A (fi)
CN (1) CN1015528B (fi)
AT (1) ATE69579T1 (fi)
DE (2) DE3719976A1 (fi)
ES (1) ES2026599T3 (fi)
FI (1) FI88894C (fi)
IN (1) IN171921B (fi)
LV (1) LV11139B (fi)
RU (1) RU1828438C (fi)
UA (1) UA9999A (fi)
ZA (1) ZA884234B (fi)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3913555A1 (de) * 1989-04-25 1990-10-31 Hymmen Theodor Gmbh Verfahren und vorrichtung zum beheizen des pressbandes einer presse
DE4041850A1 (de) * 1990-12-24 1992-06-25 Held Kurt Kontinuierlich arbeitende doppelbandpresse
EP0550782B1 (de) * 1990-12-24 1995-10-18 Kurt Held Kontinuierlich arbeitende Doppelbandpresse
DE4202920A1 (de) * 1992-02-01 1993-08-05 U S P Transfers Ind Farbuebert Verfahren und vorrichtung zur durchlauf-laminierung von folienmaterial
DE4209683C2 (de) * 1992-03-25 1994-06-01 Anger Electronic Gmbh Verfahren und Vorrichtung zur Durchlauf-Laminierung von Folienmaterial
ATA185093A (de) * 1993-09-14 2000-06-15 Danubia Petrochem Polymere Doppelbandpresse mit hydrostatischer bandstütze
DE4335749A1 (de) * 1993-10-20 1995-04-27 Danubia Petrochem Deutschland Doppelbandpresse mit hydrostatischer Bandstütze
KR19980703773A (ko) * 1995-04-10 1998-12-05 클리브랜드 데이비드 알. 2단계 적층장치
DE19615771A1 (de) * 1996-04-20 1997-10-23 Hymmen Theodor Gmbh Doppelbandpresse zum Herstellen und/oder zum Beschichten von bahn- oder plattenförmigen Werkstücken aller Art
DE19718857A1 (de) * 1997-05-03 1998-11-05 Dieffenbacher Gmbh Maschf Preß-/Heizplatte für hydraulische Kurztakt-und Beschichtungspressen
ATE223304T1 (de) * 1998-03-10 2002-09-15 Metso Panelboard Gmbh Verfahren und doppelbandpresse zur kontinuierlichen herstellung von plattenwerkstoffen
US7056403B2 (en) * 1999-01-12 2006-06-06 Hunter Douglas Inc. Apparatus for producing non-woven fabric
KR100694366B1 (ko) 1999-01-12 2007-03-12 헌터 더글라스 인더스트리즈 비 브이 부직물 및 이의 제조방법과 장치
US6883213B2 (en) * 1999-01-12 2005-04-26 Hunter Douglas Inc. Apparatus for producing non-woven fabric
US6805771B1 (en) 1999-09-20 2004-10-19 Hunter Douglas Industries B.V. Pressure laminator apparatus and non woven fabric formed thereby
US7090743B2 (en) * 1999-09-20 2006-08-15 Hunter Douglas Inc. Pressure laminator apparatus
US6926055B1 (en) 1999-09-20 2005-08-09 Hunter Douglas Inc. Non-woven composite fabric and method and apparatus for manufacturing same
CA2384370C (en) * 1999-09-20 2009-03-10 Hunter Douglas Inc. Pressure laminator apparatus and non-woven fabric formed thereby
US6908295B2 (en) * 2000-06-16 2005-06-21 Avery Dennison Corporation Process and apparatus for embossing precise microstructures and embossing tool for making same
US7017244B2 (en) * 2002-06-03 2006-03-28 Hunter Douglas Inc. Beam winding apparatus
US7695486B2 (en) * 2002-10-02 2010-04-13 Linda Dixon Intradermal color introducing needle device, and apparatus and method involving the same
DE102007028822A1 (de) 2007-06-20 2008-12-24 Theodor Hymmen Holding Gmbh Verfahren und Vorrichtung zur dekorativen Beschichtung einer Platte
CN102773903B (zh) * 2012-07-23 2014-05-07 青岛国森机械有限公司 一种专用于连续压制竹木集成材方料的单向折合履带
DE102013112275B4 (de) 2013-11-07 2019-12-12 Hymmen GmbH Maschinen- und Anlagenbau Verfahren zur Herstellung eines dekorativen Laminates
US10421305B2 (en) * 2015-05-21 2019-09-24 Chums, Inc. Feed-through thermal pressing system and associated components
JP7058852B1 (ja) * 2021-12-28 2022-04-25 株式会社Sgic ダブルベルトプレス

Family Cites Families (26)

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Publication number Priority date Publication date Assignee Title
US2135763A (en) * 1935-11-13 1938-11-08 Frederick A Nicholson Endless traveling platen fluid pressure press
US2459295A (en) * 1944-05-06 1949-01-18 Per F Skoog Apparatus for the flow manufacture of sheet material
US2437680A (en) * 1945-01-11 1948-03-16 Armstrong Cork Co Moisture control device
US2800162A (en) * 1953-11-18 1957-07-23 Howard A Rohdin Continuous band heat sealing machine
US2909804A (en) * 1955-09-16 1959-10-27 Perry G Means Continuous hot pressing machine for the manufacture of compressed boards
CH376658A (de) * 1959-12-14 1964-04-15 Lonza Ag Verfahren und Einrichtung zur Herstellung von Verbundplatten
US3185604A (en) * 1962-04-12 1965-05-25 Gen Foods Corp Method of forming a scouring article
US3580795A (en) * 1966-10-05 1971-05-25 John E Eichenlaub Apparatus for welding heat sealable sheet material
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DE1953816A1 (de) * 1969-10-25 1971-07-01 Hwm Weh Maschf Hermann Verfahren und Einrichtung zur Herstellung von ein- und mehrschichtigen Spanplatten und zu deren Beschichtung
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US3791162A (en) * 1972-07-13 1974-02-12 Npi Corp Double belt freezing machine
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DE2923036A1 (de) * 1979-06-07 1980-12-11 Sandvik Conveyor Gmbh Doppelbandpresse mit zwei umlaufenden endlosen stahlbaendern o.dgl.
DE2937410A1 (de) * 1979-09-15 1981-04-02 Into Solymar Benalmadena Costa Malaga Kerttula Kontinuierlich arbeitende plattenpresse
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Also Published As

Publication number Publication date
FI88894C (fi) 1993-07-26
DE3719976C2 (fi) 1989-10-19
IN171921B (fi) 1993-02-06
LV11139A (lv) 1996-04-20
CN1015528B (zh) 1992-02-19
JPH0191998A (ja) 1989-04-11
ZA884234B (en) 1989-03-29
EP0295427A1 (de) 1988-12-21
US5558016A (en) 1996-09-24
FI88894B (fi) 1993-04-15
FI882843A0 (fi) 1988-06-14
JPH04113195U (ja) 1992-10-02
ATE69579T1 (de) 1991-12-15
CN1030045A (zh) 1989-01-04
DE3719976A1 (de) 1988-12-29
FI882843A (fi) 1988-12-16
UA9999A (uk) 1996-09-30
US5713271A (en) 1998-02-03
DE3866289D1 (de) 1992-01-02
JP2500929Y2 (ja) 1996-06-12
RU1828438C (ru) 1993-07-15
LV11139B (en) 1996-08-20
ES2026599T3 (es) 1992-05-01

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