DE2930883A1 - Capacitive HF gluing device for corrugated paper mfr. - uses different air pressure either side of web to provide contact pressure between web layers - Google Patents

Capacitive HF gluing device for corrugated paper mfr. - uses different air pressure either side of web to provide contact pressure between web layers

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Publication number
DE2930883A1
DE2930883A1 DE19792930883 DE2930883A DE2930883A1 DE 2930883 A1 DE2930883 A1 DE 2930883A1 DE 19792930883 DE19792930883 DE 19792930883 DE 2930883 A DE2930883 A DE 2930883A DE 2930883 A1 DE2930883 A1 DE 2930883A1
Authority
DE
Germany
Prior art keywords
web
pressure
capacitive
corrugated
contact pressure
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
DE19792930883
Other languages
German (de)
Other versions
DE2930883C2 (en
Inventor
Hans-Christian Dipl Grassmann
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to DE2930883A priority Critical patent/DE2930883C2/en
Publication of DE2930883A1 publication Critical patent/DE2930883A1/en
Application granted granted Critical
Publication of DE2930883C2 publication Critical patent/DE2930883C2/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/04—Dielectric heating, e.g. high-frequency welding, i.e. radio frequency welding of plastic materials having dielectric properties, e.g. PVC
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/836—Moving relative to and tangentially to the parts to be joined, e.g. transversely to the displacement of the parts to be joined, e.g. using a X-Y table
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/60—Uniting opposed surfaces or edges; Taping
    • B31B50/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure, e.g. by welding
    • B31B50/66—Uniting opposed surfaces or edges; Taping by applying heat or pressure, e.g. by welding by high-frequency electric heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/20—Corrugating; Corrugating combined with laminating to other layers
    • B31F1/24—Making webs in which the channel of each corrugation is transverse to the web feed
    • B31F1/26—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions
    • B31F1/28—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions combined with uniting the corrugated webs to flat webs ; Making double-faced corrugated cardboard
    • B31F1/2845—Details, e.g. provisions for drying, moistening, pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/20—Corrugating; Corrugating combined with laminating to other layers
    • B31F1/24—Making webs in which the channel of each corrugation is transverse to the web feed
    • B31F1/26—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions
    • B31F1/28—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions combined with uniting the corrugated webs to flat webs ; Making double-faced corrugated cardboard
    • B31F1/2845—Details, e.g. provisions for drying, moistening, pressing
    • B31F1/285—Heating or drying equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/826—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps without using a separate pressure application tool, e.g. the own weight of the parts to be joined
    • B29C66/8266—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps without using a separate pressure application tool, e.g. the own weight of the parts to be joined using fluid pressure directly acting on the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/60—Uniting opposed surfaces or edges; Taping
    • B31B50/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure, e.g. by welding

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Paper (AREA)

Abstract

The device is used to glue a second cover layer (23) to the internal corrugated layer (21) of a corrugated paper web (2) which already has one smooth cover layer (22) applied on the opposite side. Strips of glue are applied across the crests (25) of the corrugations, before forwarding the corrugated web (2) with both cover layers (22,23) through a grid of capacitive field electrodes (1). The contact pressure for gluing the cover layer (23) to the corrugated web (2) and that for pressing the web (2) against the electrode grid is obtained by different air pressures (p1,p2) on opposite sides of the web (2). Pref. the electrode grid is positioned within an air tight housing divided into two chambers (43,44) by the web (2), each supplied with heated air at a different pressure. The pressure ratio between the two chambers ensures that the friction between the web (2) and the electrode grid is a min.

Description

Vorrichtung zur kapazitiven Hochfrequenzverleimung anDevice for capacitive high-frequency gluing

einer laufenden Wellpappebahn Die Erfindung bezieht sich auf eine Vorrichtung zur kapazitiven Hochfrequenzverleimung an einer laufenden Wellpappebann, deren gewellte Innenschicht bereits einseitig mit einer glatten Deckschicht verleimt ist und deren andere Deckschicht unter Druck auf die mit Klebstofflinien versehenen Kämme der Innenschicht aufzuleimen ist, wobei die Wellpappenbahn mit ihrer Deckschicht auf einem Rost aus kapazitivem Streufeldelektroden geführt ist.of a moving web of corrugated board The invention relates to a Device for capacitive high-frequency gluing on a moving corrugated board sheet, whose corrugated inner layer is already glued on one side with a smooth top layer and its other top layer under pressure on the lines provided with adhesive Combs of the inner layer are to be glued on, the corrugated cardboard web with its cover layer is guided on a grid of capacitive stray field electrodes.

Mit diesem Oberbegriff wird auf eine Anordnung Bezug genommen, wie sie beispielsweise aus der deutschen Auslegeschrift 12 85 857 bekannt ist. Bei dieser Vorrichtung zum Herstellen von Wellpappe mit doppelseitiger glatter Deckbahn und quer zur Förderrichtung liegenden ~#ellungen, deren Kämme mit Klebstofflinien versehen sind, sind im Abstand von und parallel zueinander angeordnete Streufeldelektroden zur Erzeugung eines Hochfrequenzfeldes vorgesehen, die zusammen mit den Oberseiten der Elektroden die gemeinsame Auflagefläche für die Deckbahn bilden.This generic term refers to an arrangement such as it is known, for example, from the German Auslegeschrift 12 85 857. At this Device for the production of corrugated cardboard with double-sided smooth cover sheet and Elongations lying transversely to the conveying direction, the crests of which are provided with adhesive lines are stray field electrodes arranged at a distance from and parallel to one another for generating a high frequency field provided together with the tops of the electrodes form the common support surface for the cover sheet.

Um eine möglichst gleichmäßige Erwärmung zu erreichen, sind außerdem die Elektroden der Länge nach in einem von 900 geringfügig abweichenden S'inkel zu den quer zur Förderrichtung liegenden Wellungen angeordnet.In order to achieve as even heating as possible, are also the length of the electrodes at an angle slightly different from 900 arranged to the corrugations lying transversely to the conveying direction.

Die Aufgabe der vorliegenden Erfindung besteht darin, auf einfache Leise die Bahn definiert auf dem Elektrodenrost zu führen und gleichzeitig für den erforderlichen Preßdruck zum Verleimen zu sorgen.The object of the present invention is to provide simple To quietly guide the path defined on the electrode grid and at the same time for the to ensure the necessary pressure for gluing.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Preßdruck für die Verleimung und der Auflagedruck der Bahn auf dem Rost durch unterschiedliche Luftdrücke auf beiden Seiten der Bahn einstellbar ist. Auf diese Weise kann je nach dem Differenzdruck ein ausreichender Preßdruck erzeugt werden, also auch der Auflagedruck der Bahn auf dem Rost so gewählt werden, daß die Reibung ein Minimum wird.This object is achieved according to the invention in that the pressing pressure for the gluing and the contact pressure of the web on the grate by different Air pressures on both sides of the web is adjustable. In this way, depending on the differential pressure a sufficient compression pressure can be generated, including the contact pressure the path on the grate can be chosen so that the friction is a minimum.

Konstruktiv wird die Anordnung vorteilhafterweise so aufgebaut, daß der Rost in einem durch die Bahn in zwei Räume unterteilten Luftkasten angeordnet wird und in beide Räume Heißluft unter unterschiedlichem Druck einführbar ist. Auf diese Weise können auch die entstehenden Dampfschwaden beseitigt werden.Structurally, the arrangement is advantageously built up so that the grate is arranged in an air box divided into two rooms by the track and hot air can be introduced into both rooms at different pressures. on In this way, the resulting vapor clouds can also be eliminated.

Anhand eines in der Zeichnung dargestellten Ausführungsbeispiels sei die Erfindung näher erläutert; es zeigen: Figur 1 eine ansicht der Vorrichtung von unten mit Wellenpappenbahn und Streufeldelektroden, Figur 2 einen Querschnitt längs der Linie II-II in Figur 1 und Figur 3 einen Querschnitt längs der Linie III-III in #igur 1.Based on an embodiment shown in the drawing the invention explained in more detail; They show: FIG. 1 a view of the device from FIG below with corrugated cardboard web and stray field electrodes, Figure 2 is a longitudinal cross-section the line II-II in Figure 1 and Figure 3 shows a cross section along the line III-III in #igur 1.

Figur 1» Die zu verleimende Wellpappenbahn 2 wird in Richtung des Pfeiles 3 über stabförmigen Streufeldelektroden 1 unterschiedlicher Polarität hinwegbewegt. Die ~wellungen 21 der Wellpappenbahn 2 liegen dabei senkrecht zur orschubrichtung 3. Die Elektroden 1 sind unter einem klei-0 nen Winkel von z.B.#= 5 gegenüber der Bahnlängsrichtung geneigt, um eine möglichst gleichmäßige Durchwärmung der einzelnen Klebelinien zu erreichen. Figure 1 »The corrugated cardboard web 2 to be glued is in the direction of the Arrow 3 moved over rod-shaped stray field electrodes 1 of different polarity. The corrugations 21 of the corrugated cardboard web 2 are perpendicular to the direction of advance 3. The electrodes 1 are at a small angle of e.g. # = 5 with respect to the The length of the web is inclined to ensure that the individual parts are heated as evenly as possible Reach glue lines.

Wie aus figur 2 näher ersichtlich, besteht die Wellpappenbahn 2 aus der unteren Deckelschicht 22, dem Innenteil 24 mit ;wellungen 21 und der oberen glatten Deckschicht 23, die noch aufzuleimen ist. Zu diesem Zweck sind die Kämme 25 der Wellungen 21 mit Klebelinien versehen. An diesen Klebelinien ist die Deckschicht 23 mit den Wellungen zu verbinden. Die Bahn 2 wird hierzu über die kapazitiven Streufeldelektroden 1 geführt, die in einem Luftkasten 4 angeordnet sind. Durch die Bahn 2 ist der Luftkasten in zwei Räume 43 und 44 unterteilt, in die die über Zuleitungen 41 und 42 Heißluft unterschiedlichen Druckes p1, p2 eingeblasen wird. Durch die unterschiedlichen Drücke ist sowohl der für die Verleimung erforderliche preßdruck zwischen den Kämmen 25 und der Deckschicht 23 als auch die zur sicheren Führung erforderliche Anpreßkraft der Bahn 2 auf den aus Elektroden 1 bestehenden Rost gesichert. Durch Dichtungen 45 zwischen Bahn 2 und Kasten 4 kann dafür gesorgt werden, daß nur ein definierter Anteil der in die beiden Räume 43, 44 eingeblasenen Heißluft entweichen kann, so daß immer definierte Druckverhältnisse gewährleistet sind. Als Uberdruck im oberen Raum kann z.B. ein nert von 200 bis 400 nun Wassersäule gewählt werden, als ueberdruck im unteren Raum etwa ein Druck von 400 bis 600 mm Wassersäule.As can be seen in more detail from Figure 2, the corrugated cardboard web 2 consists of the lower cover layer 22, the inner part 24 with; corrugations 21 and the upper smooth cover layer 23, which is still to be glued. For this purpose are the combs 25 of the corrugations 21 provided with glue lines. The top layer is on these glue lines 23 to connect with the corrugations. The web 2 is for this purpose via the capacitive stray field electrodes 1, which are arranged in an air box 4. The air box is through the path 2 divided into two rooms 43 and 44, into which the hot air via supply lines 41 and 42 different pressure p1, p2 is blown. Because of the different pressures is both the pressure required for gluing between the combs 25 and the cover layer 23 as well as the contact pressure required for safe guidance the web 2 secured on the grid consisting of electrodes 1. Through seals 45 between track 2 and box 4, it can be ensured that only one defined Share of the hot air blown into the two rooms 43, 44 can escape, so that defined pressure conditions are always guaranteed. As overpressure in the upper Room, for example, a value of 200 to 400 water column can now be selected as overpressure in the lower room a pressure of about 400 to 600 mm water column.

3 Patentansprflche 3 Elguren3 Claims 3 Elgurs

Claims (3)

Patentansprüche Vorrichtung zur kapazitiven Hochfrequenzverleimung einer laufenden Wellpappebahn, deren gewellte Innenschicht bereits einseitig mit einer glatten Deckschicht verleimt ist und deren andere Deckschicht unter Druck auf die mit Klebstofflinien versehenen Kämme der Innenschicht aufzuleimen ist, wobei die Wellpappebahn mit ihrer Deckschicht auf einem Rost aus kapazitiven Streufeldelektroden geführt ist, d a d u r c h g e k e n nz e i c h n e t, daß der Preßdruck für die Verleimung und der Auflagedruck der Bahn (2) auf dem Rost aus Streufeldelektroden (1) durch unterschiedliche Luftdruck (p1, p2) auf beiden Seiten der Bahn (2) einstellbar ist.Claims device for capacitive high-frequency gluing a running web of corrugated cardboard, the corrugated inner layer of which is already one-sided a smooth top layer is glued and the other top layer under pressure is to be glued onto the ridges of the inner layer provided with adhesive lines, wherein the sheet of corrugated cardboard with its cover layer on a grid made of capacitive stray field electrodes is out that the pressure for the Gluing and the contact pressure of the web (2) on the grate from stray field electrodes (1) adjustable by different air pressures (p1, p2) on both sides of the web (2) is. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Druckverhältnisse so gewählt sind, daß die Reibung der Bahn (2) auf dem Rost ein Ninimurn ist.2. Apparatus according to claim 1, characterized in that the pressure conditions are chosen so that the friction of the web (2) on the grate is a ninimurn. 3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Rost aus lektroden (1) in einem durch die Bahn (2) in zwei Räume (43, 44) unterteilten Luftkasten (4) angeordnet ist und in beide Räume Heißluft unterschiedlichen Druckes einführbar ist.3. Apparatus according to claim 1, characterized in that the grate of electrodes (1) in one divided by the web (2) into two rooms (43, 44) Air box (4) is arranged and hot air of different pressure in both rooms is insertable.
DE2930883A 1979-07-30 1979-07-30 Device for capacitive high-frequency gluing on a moving corrugated cardboard web Expired DE2930883C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2930883A DE2930883C2 (en) 1979-07-30 1979-07-30 Device for capacitive high-frequency gluing on a moving corrugated cardboard web

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2930883A DE2930883C2 (en) 1979-07-30 1979-07-30 Device for capacitive high-frequency gluing on a moving corrugated cardboard web

Publications (2)

Publication Number Publication Date
DE2930883A1 true DE2930883A1 (en) 1981-02-05
DE2930883C2 DE2930883C2 (en) 1982-10-28

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Application Number Title Priority Date Filing Date
DE2930883A Expired DE2930883C2 (en) 1979-07-30 1979-07-30 Device for capacitive high-frequency gluing on a moving corrugated cardboard web

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998028127A1 (en) * 1996-12-20 1998-07-02 Molins Plc Manufacture of corrugated board
EP0909634A2 (en) * 1997-03-26 1999-04-21 Scm Container Machinery Limited Corrugating apparatus
US20160185033A1 (en) * 2013-07-08 2016-06-30 Korea Institute Of Machinery & Materials Apparatus for manufacturing of micro-channel and method for manufacturing of micro-channel using the same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3319353A (en) * 1964-03-30 1967-05-16 Niwa Machinery Company Ltd Pressing and drying devices for corrugated board manufacturing equipment
US3340125A (en) * 1964-12-18 1967-09-05 Koppers Co Inc Adhesive bonding method and apparatus
DE1285857B (en) * 1966-05-04 1968-12-19 Koppers Co Inc Device for the production of corrugated cardboard
DE2201742A1 (en) * 1972-01-14 1973-07-19 Bhs Bayerische Berg METHOD AND DEVICE FOR DRYING AND TRANSPORTING A CORRUGATED CARDBOARD WINDOW COMPOSED OF GLUED CARDBOARD Web

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3319353A (en) * 1964-03-30 1967-05-16 Niwa Machinery Company Ltd Pressing and drying devices for corrugated board manufacturing equipment
US3340125A (en) * 1964-12-18 1967-09-05 Koppers Co Inc Adhesive bonding method and apparatus
DE1285857B (en) * 1966-05-04 1968-12-19 Koppers Co Inc Device for the production of corrugated cardboard
DE2201742A1 (en) * 1972-01-14 1973-07-19 Bhs Bayerische Berg METHOD AND DEVICE FOR DRYING AND TRANSPORTING A CORRUGATED CARDBOARD WINDOW COMPOSED OF GLUED CARDBOARD Web

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998028127A1 (en) * 1996-12-20 1998-07-02 Molins Plc Manufacture of corrugated board
EP0909634A2 (en) * 1997-03-26 1999-04-21 Scm Container Machinery Limited Corrugating apparatus
EP0909634A3 (en) * 1997-03-26 2000-12-27 Scm Container Machinery Limited Corrugating apparatus
US20160185033A1 (en) * 2013-07-08 2016-06-30 Korea Institute Of Machinery & Materials Apparatus for manufacturing of micro-channel and method for manufacturing of micro-channel using the same
US10987854B2 (en) * 2013-07-08 2021-04-27 Korea Institute Of Machinery & Materials Apparatus for manufacturing of micro-channel and method for manufacturing of micro-channel using the same

Also Published As

Publication number Publication date
DE2930883C2 (en) 1982-10-28

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