DE3940263A1 - Welding machine for waterproof films - has adjustably heated wedge between overlapping edges of films and vibrating heated pressure roller then applied to the overlap - Google Patents

Welding machine for waterproof films - has adjustably heated wedge between overlapping edges of films and vibrating heated pressure roller then applied to the overlap

Info

Publication number
DE3940263A1
DE3940263A1 DE3940263A DE3940263A DE3940263A1 DE 3940263 A1 DE3940263 A1 DE 3940263A1 DE 3940263 A DE3940263 A DE 3940263A DE 3940263 A DE3940263 A DE 3940263A DE 3940263 A1 DE3940263 A1 DE 3940263A1
Authority
DE
Germany
Prior art keywords
films
welding
pressure roller
heated
roller
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.)
Withdrawn
Application number
DE3940263A
Other languages
German (de)
Inventor
Dieter Froehlich
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.)
WAG APPARATETECHNIK GmbH
Original Assignee
WAG APPARATETECHNIK GmbH
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 WAG APPARATETECHNIK GmbH filed Critical WAG APPARATETECHNIK GmbH
Priority to DE3940263A priority Critical patent/DE3940263A1/en
Publication of DE3940263A1 publication Critical patent/DE3940263A1/en
Withdrawn legal-status Critical Current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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • 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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/20—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
    • 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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
    • B29C65/30—Electrical means
    • B29C65/305—Electrical means involving the use of cartridge heaters
    • 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
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • 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
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/822—Transmission mechanisms
    • B29C66/8226—Cam mechanisms; Wedges; Eccentric mechanisms
    • B29C66/82265—Eccentric mechanisms
    • 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
    • B29C66/8362—Rollers, cylinders or drums moving relative to and tangentially to the parts to be joined
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D15/00—Apparatus or tools for roof working
    • E04D15/04—Apparatus or tools for roof working for roof coverings comprising slabs, sheets or flexible material
    • 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
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/10—Building elements, e.g. bricks, blocks, tiles, panels, posts, beams

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

Appts. for welding together overlapping waterproof films heats their areas concerned and presses them together using vibrations to provide the pressure. The equipment seals films for use on a dump or on a flat roof, it inserts a heating wedge between the two overlapping edges of film. The tool contains an adjustable heating element and is set to reach the desired temp. The two films are then drawn under a pressure roller. This roller applies both its own weight and also vibrations produced by a rotating eccentric acting on an outer circumference in the roller. The vibrations are set to the resonance frequency of the appts. so as to have optimum effect. ADVANTAGE - The equipment does not produce corrugations in the welds. It does not simply use the weight of the appts. or the films.

Description

Die Erfindung betrifft eine Vorrichtung zum Schweißen von einander überlappenden Abdichtungsbahnen, wobei die Bahnen an den Schweiß­ flächen erwärmt und nach Plastifizieren der Schweißflächen gegen­ einander gedrückt werden.The invention relates to a device for welding one another overlapping waterproofing membranes, the membranes stick to the sweat heated surfaces and after plasticizing the welding surfaces pressed against each other.

Kunststoffabdichtungsbahnen werden u. a. im Hochbau, Tiefbau und Deponiebau verwendet. Aus Herstellungs- und Transportgründen werden Kunststoffabdichtungen aus einzelnen Bahnen zusammengesetzt. Die Bahnenbreiten liegen zwischen 0,6 m und 2 m im Hochbau und Tiefbau bzw. 1,5 m und 5 m im Deponiebau. Bei größeren Abdichtungsflächen muß die Abdichtung deshalb aus einzelnen Bahnen zusammengesetzt werden. Die Bahnen werden überlappend verlegt und an den Überlappungsrändern verschweißt. Die häufigste Art der Verschweißung ist die thermische Verschweißung, bei der die Schweißflächen durch Wärmeeinwirkung plastifiziert und aneinandergedrückt werden. In früherer Zeit waren die Schweißgeräte so ausgelegt, daß sie den Schweißdruck mit ihrem Gewicht aufbringen konnten. Diese Schweißgeräte wurden jedoch durch solche Geräte abgelöst, die mit einem Schwanenhals - einem S-förmigen Maschinenteil - zwischen den Bahnenrändern hindurch unter den unten­ liegenden Bahnenrand greifen. Das unter den unteren Bahnenrand grei­ fende Ende des Maschinenteils bildet ein Widerlager, das in Grenzen beliebige Anpreßkräfte aufnimmt. Auf diesem Wege konnten annähernd gleichmäßige Schweißnähte erzielt werden. Das Untergreifen des unter­ liegenden Bahnenrandes hat jedoch auch Nachteile. Der Bahnenrand unterliegt dabei erheblichen Verformungen. Dies führt zu unangenehmer Wellenbildung - vor allem bei langen Schweißnähten, wie sie im De­ poniebau vorkommen.Plastic waterproofing membranes are u. a. in building construction, civil engineering and Landfill construction used. For manufacturing and transportation reasons Plastic seals composed of individual sheets. The Web widths are between 0.6 m and 2 m in building construction and civil engineering or 1.5 m and 5 m in landfill construction. With larger sealing surfaces must the seal is therefore composed of individual sheets. The sheets are laid overlapping and at the overlapping edges welded. The most common type of welding is thermal Welding in which the welding surfaces are exposed to heat plasticized and pressed together. In the past were the welding equipment is designed so that the welding pressure with their Could apply weight. However, these welding machines were made by replaced such devices with a gooseneck - an S-shaped Machine part - between the edges of the sheet under the below grab the lying edge of the web. That grabs under the lower edge of the sheet The end of the machine part forms an abutment that is limited absorbs any contact pressure. This way you could get close to uniform welds can be achieved. Reaching in under However, lying web edge also has disadvantages. The web edge is subject to considerable deformation. This leads to more discomfort Wave formation - especially with long weld seams, such as those in De poniebau occur.

Der Erfindung liegt daher die Aufgabe zugrunde, derartige Wellenbil­ dungen zu vermeiden. Die Erfindung greift dazu wieder auf die ältere Lösung zurück, bei der lediglich von oben eine Anpressung der Abdich­ tungsbahnenränder erfolgt. Im Unterschied zu den bekannten Schweiß­ geräten geht die Erfindung jedoch von dem Gedanken aus, daß der notwendige Schweißdruck nicht allein mit dem Gewicht des Gerätes aufzubringen ist, weil derartige Gewichte zu unhandlichen Bauformen der Schweißgeräte führen. Zudem ist das Bauvolumen der bekannten Schweißgeräte so groß, daß Unebenheiten extreme Auswirkungen auf die Schweißnaht haben.The invention is therefore based on the object, such Wellenbil to avoid dangers. To this end, the invention again applies to the older one Solution back, in which the Abdich edges of the track. In contrast to the well-known sweat However, the invention is based on the idea that the  necessary welding pressure not only with the weight of the device is to be applied because such weights to unwieldy designs of the welding equipment. In addition, the construction volume of the known Welders so big that bumps have an extreme impact on the Have a weld.

Nach der Erfindung wird der notwendige Schweißdruck mit Vibration erzeugt. Zweckmäßigerweise erfolgt die Vibration unter Ausnutzung der Resonanzlage des Gerätes. D. h. die Schwingung wird der Resonanzlage des Gerätes angepaßt und/oder die Resonanzlage der Schwingungs­ frequenz.According to the invention, the necessary welding pressure with vibration generated. The vibration expediently takes place using the Resonance of the device. I.e. the vibration becomes the resonance adapted to the device and / or the resonance of the vibration frequency.

Die Schwingung wird wahlweise mechanisch und/oder elektrisch erzeugt. Geeignete elektrische Schwingungserzeuger sind z. B. Elektromagnete. Als mechanische Schwingungserzeuger dienen vorzugsweise Unwucht­ schwinger. Unwuchtschwinger beinhalten rotierende, mit einer Unwucht versehene Teile. Die Unwucht kann verschieden angeordnet sein. Eine vorteilhafte Lösung wird durch eine hohle Andruckrolle gebildet, in der die Unwucht drehbeweglich gelagert ist. Der Antrieb der Unwucht kann über eine ihrerseits auf der Wellenachse drehbeweglich gelagerte Hülse erfolgen, die in die Andruckrolle hineingreift. Wahlweise ist die Unwucht auch neben der Andruckrolle angeordnet. Als Lagerung eignet sich die Rollenachse. Es ist von Vorteil, beiderseits der Andruckrolle jeweils eine Unwucht anzuordnen. Damit wird eine optimale Einwirkung auf die Andruckrolle gesichert.The vibration is optionally generated mechanically and / or electrically. Suitable electrical vibrators are e.g. B. Electromagnets. Imbalance is preferably used as the mechanical vibration generator vibrator. Unbalanced vibrators involve rotating, with an unbalance provided parts. The imbalance can be arranged differently. A advantageous solution is formed by a hollow pressure roller, in the unbalance is rotatably supported. The drive of the unbalance can in turn be rotatably mounted on the shaft axis Made sleeve that engages in the pressure roller. Is optional the unbalance is also arranged next to the pressure roller. As storage the roller axis is suitable. It is an advantage on both sides of the To arrange pressure roller one imbalance. This will be an optimal one Action on the pressure roller secured.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung darge­ stellt.In the drawing, an embodiment of the invention is Darge poses.

Die dargestellte Schweißvorrichtung dient zum Verlegen von Abdich­ tungen sowohl auf einem Deponie-Planum als auch auf einem Flachdach. Das Deponie-Planum ist mit 1 bezeichnet. Auf dem Deponie-Planum sind Abdichtungsbahnen 2 und 3 verlegt worden, die sich an ihren Rändern überlappen. Das mit 4 bezeichnete erfindungsgemäße Schweißgerät greift mit einem Heizkeil 6 zwischen die übereinanderliegenden Bahnenränder. The welding device shown is used to lay seals both on a landfill site and on a flat roof. The landfill planum is labeled 1 . Waterproofing membranes 2 and 3 have been laid on the landfill level, which overlap at their edges. The welding device according to the invention, designated 4 , reaches with a heating wedge 6 between the superimposed web edges.

Der Heizkeil 6 besitzt Heizpatronen 7 und 8, die über Zuleitungen 9 elektrisch beheizt werden. Die Heizkraft des Heizkeiles 6 ist so eingestellt, daß die über dem Heizkeil 6 bzw. unter dem Heizkeil 6 gleitenden Bahnenränder erwärmt und an den Schweißflächen plastifi­ ziert werden. Nach Verlassen des Heizkeiles 6 laufen die Bahnenränder unter eine Andruckrolle 15. Die Andruckrolle 15 des Schweißgerätes 4 bewirkt den notwendigen Schweißdruck, um eine einwandfreie Ver­ schweißung des Kunststoffmaterials - im Ausführungsbeispiel Polyethylen hoher Dichte - sicherzustellen. Das Schweißgerät 4 besitzt neben der Andruckrolle 15 Abstützrollen 5.The heating wedge 6 has heating cartridges 7 and 8 which are electrically heated via feed lines 9 . The heating power of the heating wedge 6 is set such that the web edges sliding over the heating wedge 6 or under the heating wedge 6 are heated and plastifi ed on the welding surfaces. After leaving the heating wedge 6 , the web edges run under a pressure roller 15 . The pressure roller 15 of the welding device 4 brings about the necessary welding pressure in order to ensure a perfect welding of the plastic material - in the exemplary embodiment high-density polyethylene. In addition to the pressure roller 15, the welding device 4 has support rollers 5 .

Das Schweißgerät 4 wird elektrisch betrieben. Die Stromzuführungslei­ tung ist mit 11 bezeichnet. Darüber hinaus ist am Schweißgerät 4 ein Lenker 12 schematisch dargestellt. Des weiteren ist ein Armaturen­ brett 13 mit Armaturen 14 dargestellt, welche die einzelnen Schweiß­ parameter, insbesondere die Temperatur und Schweißgeschwindigkeit anzeigen.The welding device 4 is operated electrically. The Stromzuführungslei device is designated 11 . In addition, a handlebar 12 is shown schematically on the welding device 4 . Furthermore, a dashboard 13 is shown with fittings 14 which show the individual welding parameters, in particular the temperature and welding speed.

Die Andruckkraft der Andruckrolle 15 setzt sich aus dem Gewicht des Schweißgerätes und einer Schwingungsbewegung zusammen. Die Schwin­ gungsbewegung wird mit Hilfe einer rotierenden Unwucht 17 erzeugt. Die Unwucht 17 ist drehbeweglich auf der Rollenachse 16 gelagert und bewegt sich in einer Ausnehmung 18 der Andruckrolle 15.The pressure force of the pressure roller 15 is composed of the weight of the welding device and an oscillating movement. The vibration movement is generated with the help of a rotating unbalance 17 . The unbalance 17 is rotatably mounted on the roller axis 16 and moves in a recess 18 of the pressure roller 15 .

Die Erregerschwingung der Unwucht ist auf die Resonanzlage des Schweißgerätes 4 ausgelegt. Dadurch wird die Erregerkraft optimal ausgenutzt.The excitation vibration of the unbalance is designed for the resonance position of the welding device 4 . As a result, the excitation force is optimally used.

Claims (6)

1. Vorrichtung zum Schweißen von einander überlappenden Abdichtungs­ bahnen, wobei die Bahnen an den Schweißflächen erwärmt und nach Plastifizieren der Schweißflächen gegeneinander gedrückt werden, dadurch gekennzeichnet, daß der Schweißdruck durch Vibration erzeugt wird.1. Device for welding overlapping sealing sheets, the sheets being heated on the welding surfaces and pressed against each other after plasticizing the welding surfaces, characterized in that the welding pressure is generated by vibration. 2. Vorrichtung nach Anspruch 1, gekennzeichnet durch eine Schwingung im Bereich der Resonanzlage des Gerätes.2. Device according to claim 1, characterized by an oscillation in the area of the resonance of the device. 3. Vorrichtung nach Anspruch 1 oder 2, gekennzeichnet durch elek­ trische und/oder mechanische Schwingungserreger.3. Device according to claim 1 or 2, characterized by elek trical and / or mechanical vibration exciters. 4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß die Schwingungserreger als Elektromagnete oder Unwuchtschwinger (17) gebildet werden.4. The device according to claim 3, characterized in that the vibration exciters are formed as electromagnets or unbalanced vibrators ( 17 ). 5. Vorrichtung nach einem oder mehreren der Ansprüche 1 bis 4, gekenn­ zeichnet durch eine Schweißvorrichtung mit zwischen die Bahnen­ ränder wirkende Heizvorrichtung (6) und einem Gewicht, das kleiner als der notwendige Schweißdruck ist.5. The device according to one or more of claims 1 to 4, characterized by a welding device with between the webs acting heating device ( 6 ) and a weight that is less than the necessary welding pressure. 6. Vorrichtung nach einem oder mehreren der Ansprüche 1 bis 5, gekenn­ zeichnet durch eine Andruckrolle (15) mit auf der Rollenachse (16) oder in der Rolle (15) laufender Unwucht (17).6. The device according to one or more of claims 1 to 5, characterized by a pressure roller ( 15 ) with on the roller axis ( 16 ) or in the roller ( 15 ) running unbalance ( 17 ).
DE3940263A 1989-11-09 1989-12-06 Welding machine for waterproof films - has adjustably heated wedge between overlapping edges of films and vibrating heated pressure roller then applied to the overlap Withdrawn DE3940263A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE3940263A DE3940263A1 (en) 1989-11-09 1989-12-06 Welding machine for waterproof films - has adjustably heated wedge between overlapping edges of films and vibrating heated pressure roller then applied to the overlap

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3937309 1989-11-09
DE3940263A DE3940263A1 (en) 1989-11-09 1989-12-06 Welding machine for waterproof films - has adjustably heated wedge between overlapping edges of films and vibrating heated pressure roller then applied to the overlap

Publications (1)

Publication Number Publication Date
DE3940263A1 true DE3940263A1 (en) 1991-05-16

Family

ID=25886899

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3940263A Withdrawn DE3940263A1 (en) 1989-11-09 1989-12-06 Welding machine for waterproof films - has adjustably heated wedge between overlapping edges of films and vibrating heated pressure roller then applied to the overlap

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Country Link
DE (1) DE3940263A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1309551C (en) * 2003-04-04 2007-04-11 莱斯特加工技术公司 Method and device for connecting welding plane plastic material
CN104858601A (en) * 2014-02-25 2015-08-26 莱丹科技股份公司 Hot wedge welding device
EP2724843B1 (en) 2012-10-24 2017-05-03 Jackon Insulation GmbH Manufacture of thick XPS foam panels by means of welding

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1309551C (en) * 2003-04-04 2007-04-11 莱斯特加工技术公司 Method and device for connecting welding plane plastic material
EP2724843B1 (en) 2012-10-24 2017-05-03 Jackon Insulation GmbH Manufacture of thick XPS foam panels by means of welding
CN104858601A (en) * 2014-02-25 2015-08-26 莱丹科技股份公司 Hot wedge welding device

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