DE2015214A1 - Simultaneous cutting and welding of - several thermoplastic film layers - Google Patents

Simultaneous cutting and welding of - several thermoplastic film layers

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Publication number
DE2015214A1
DE2015214A1 DE19702015214 DE2015214A DE2015214A1 DE 2015214 A1 DE2015214 A1 DE 2015214A1 DE 19702015214 DE19702015214 DE 19702015214 DE 2015214 A DE2015214 A DE 2015214A DE 2015214 A1 DE2015214 A1 DE 2015214A1
Authority
DE
Germany
Prior art keywords
welding
pressure
angled
jaw
rubber pad
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.)
Pending
Application number
DE19702015214
Other languages
German (de)
Inventor
Erhard; Heinrich Gerhard Dipl -Ing.; Hahmann Manfred; Dresden ArIt
Original Assignee
VEB Kombinat Nagema, χ 8θ45 Dresden
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 VEB Kombinat Nagema, χ 8θ45 Dresden filed Critical VEB Kombinat Nagema, χ 8θ45 Dresden
Publication of DE2015214A1 publication Critical patent/DE2015214A1/en
Pending legal-status Critical Current

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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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
    • B29C65/221—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip
    • B29C65/224—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip being a resistive ribbon, a resistive band or a resistive strip
    • 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
    • B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
    • B29C65/221—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip
    • B29C65/226—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip characterised by the cross-section of said heated wire, resistive ribbon, resistive band or resistive strip, e.g. being triangular
    • 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
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B29C65/743—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc
    • B29C65/7433—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc the tool being a wire
    • 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
    • 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
    • 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
    • B29C66/812—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 characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8122—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 characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the composition of the material constituting the pressing elements, e.g. constituting 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
    • B29C66/81—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
    • B29C66/814—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 characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—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 characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—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 characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81415—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 characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled
    • B29C66/81417—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 characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled being V-shaped
    • 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
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • 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
    • B29C66/814—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 characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—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 characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81457—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 characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a block or layer of deformable material, e.g. sponge, foam, rubber

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

Cooled welding pressure die has pulse-heated strip against heat-resistant, elastic opposite pressure die. Welding die is a tube of heat conducting material with longitudinal pressure peak in wall thickness, opposite which an angled heating band lies against a silicone rubber overlay on a foam rubber support and tensioned Teflon (RTM) strip. Preferably, a Teflon (RTM) strip is spring-mounted a set distance in front of the angled heated band.

Description

Vorrichtung zum gleichzeitigen Trenn- und Flächenschweißen von mehreren Lagen thermoplastischer Folie Die Erfindung betrifft eine Vorrichtung zurn- gleichzei tigen Trenn- und Flächenschweißen von mehreren Lagen thermoplastischer Folie mit gekühlter Schweißdruckbacke, an deren Wirkstelle ein impulsbheiztes Band gegenüber einer aus hitzebeständigem, elastischem Material ausgebildeten Gegendruckbacke angeordne-t ist. Device for simultaneous separation and surface welding of several Layers of thermoplastic film The invention relates to a device at the same time term separation and surface welding of several layers of thermoplastic film with cooled welding pressure jaw, at the point of action a pulse-heated band opposite a counterpressure jaw made of heat-resistant, elastic material is arranged is.

Es sind Vorrichtungen bekannt, bei denen in jedem Schmeißbackenpaar jevJeils ein oder auch nur in einem Schweißbacken ein impulsbeheizter Draht angeordnet ist. Dazu sind Nuten in die Schweißbacken eingearbeitet, die im geschlossenen Zustand der Schweißbacken eine rammer bilden, Innerhalb dieser Kammer wird die Folie durch den impulsbeheizten Uraht durchschmolzen. Während des Abschmelzens in der Kammer wird die übereinanderliegende Folie durch die Schmelznaht zusammengesohweißt.There are known devices in which each pair of jaws In each case one or only one pulse-heated wire is arranged in one welding jaw is. For this purpose, grooves are incorporated into the welding jaws, which are in the closed state the welding jaws form a rammer, inside this chamber the film is pushed through melted the pulse-heated wire. During the melting in the chamber the overlapping foil is welded together by the fusion seam.

Solche Vorrichtungen haben den Nachteil,daß durch den plötzlichen libergang von der Schmelznaht zur Folie eine versprödung der Folie auftritt, die bei größerer Belastung zum Aufreißen der Schweißnaht führen kann.Such devices have the disadvantage that by the sudden at the transition from the weld seam to the film, the film becomes brittle can lead to the weld seam tearing in the event of greater stress.

Es sind weiter Vorrichtungen bekannt, bei denen die eine Schweißbacke und somit auch das Heizband flach mit einer Spitze ähnlich einer Sicke ausgebildet ist, die die Solide beim Schweißvorgang in eine elastisch ausgebildete Gegenbacke drückt.There are also known devices in which one welding jaw and thus also the heating tape is flat with a tip similar to a bead is that the solid during the welding process in an elastic counter-jaw presses.

Solche Vorrichtungen haben den Nachteil' daß der Schweißdruck beim Schweißen sehr hoch und die elastische Unterlage relativ hart sein muß. Auch hier treten durch die Flachschweißung beim plötzlichen Übergang von der Schweißnaht; zur Folie schädliche Randspannungen und Versprödungen auf. Außerdem ist ein Verschweißen von mehreren Folienlagen, wie es z. B. beim Herstellen von Beuteln mit Zwickeln notwendig ist;, schwer möglich.Such devices have the disadvantage 'that the welding pressure when Welding very high and the elastic base must be relatively hard. Here too occur through the flat weld at the sudden transition from the weld seam; edge stresses and embrittlement that are harmful to the film. In addition, there is welding of several layers of film, as it is, for. B. in the manufacture of bags with gussets is necessary; difficult to do.

Zweck der Erfindung ist es, die Qualität der Schweißnähte, besonders beim Schweißen von mehreren Folienlagen aufeinander, zu verbessern sowie den Bauaufwand für Schweißbacken zu verringern.The purpose of the invention is to improve the quality of the welds, in particular when welding several layers of foil on top of one another, to improve the construction costs for welding jaws to decrease.

Der Brfindung liegt die aufgabe zugrunde, eine Trann. und Flächenschweißbacke zu schaffen, die es ermöglicht, an der Trennstelle die größte Wärmemenge und den höchsten Druck zu@uführen und diese beiden Komponenten gleichmäßig nach den inneren Randzonen der Schweißnähte abzubauen.The finding is based on the task, a Trann. and surface welding jaw to create that allows the greatest amount of heat and the Apply the highest pressure and move these two components evenly towards the inner Remove edge zones of the weld seams.

Erfindungsgemäß wird die Aufgabe dadurch gelöst, daß die Schweißdruckbacke aus einem Rohr aus gut wärmeleitfänigem Material mit einer an seiner äußeren Wandstärke in Längsrichtung angesetzten Druckapitze besteht. Auf der Druckspitze ist ein abgewinkeltes Ileizband gegenüber einer aus Silikongummi mit einer Schaumgumminnterlage und einem Teflonband bespannten Gegendruckbacke angeordnet.According to the invention the object is achieved in that the welding pressure jaw from a tube made of good thermal conductivity Material with one on his outer wall thickness in the longitudinal direction applied pressure tip consists. On the pressure tip is an angled ileiz tape opposite one made of silicone rubber with a foam rubber pad and a counterpressure jaw covered with Teflon tape.

Ein weiteres Teflonband ist in einem bestimmten Abstand vor dem abgewinkelten Heizband federnd angebracht. Another Teflon tape is at a certain distance in front of the angled Resilient heating tape attached.

Vorzugsweise ist das abgeviinlcelte Ileizband unter einem Winkel von 90 bis 1500 abgewinkelt. Preferably the folded iliac tape is at an angle angled from 90 to 1500.

Durch die erfindungsgemäße Anordnung der Vorrichtung ist es möglich, das Schweißen mit vergleichsweise geringem Drücken suszuführen. The inventive arrangement of the device, it is possible to carry out welding with comparatively low pressures.

An einem Ausführungsbeispiel soll die Erfindung näher erläutert werden. In der Zeichnung stellen dar; Fig. 1s eine Vorrichtung zum gleichzeitigen Trenn- und Flächenschweißen; Fig. 2; eine Vorrichtung gemäß Fig. 1 in Schweißstellung. The invention is to be explained in more detail using an exemplary embodiment. In the drawing represent; Fig. 1s a device for simultaneous separation and surface welding; Fig. 2; a device according to FIG. 1 in the welding position.

Die Schweißdruckbacke 1 ist wirkungsseitig so aufgebaut, daß, ihr Querschnitt dem eines Rohres mit verstärkter Druckspitze 2 in, Richtung der Wirkstelle entspricht. Die. The welding pressure jaw 1 is constructed on the action side so that, you Cross-section that of a pipe with a reinforced pressure peak 2 in the direction of the point of action is equivalent to. The.

Druckapitze 2 wird durch zwei an den Rohrquerschnitt 3 angelegte Tangenten gebildst, die vorzugsweise einen Winkel von 90 bis 150° einschließen. Das Material das Rohres 3 besteht aus gut wärmeleitbarem Werkstoff, durch dessen Inneres ein Kühlmittel 4, wie z. B. Leitungsmasser fließt. An der Druckspitze 2 ist ein impulsbelieiztes'in einem Winkel entsprechend der Druckspitze 2 gebogones Heizband 4 aus Kanthslband befestigt. Beim Arbeitstakt der Schweißbacken dringt die Druckspitze 2 mit dem abgevzinkelten Ileizband 5 in die in einer Aussparung 6 mit einer Schaumgummiunterlage 7 und einer in der Wirkungsrichtung vorgeordneten Silikongummiauflage 8 befindliche Gegendruckbacke 9 ein. fieber die Silikongummiauflage 8 ist ein Teflonband 10 gespannte während ein zvieites Peflonband 11 in einem bestimmten Abstand federnd vor dem abgewnkelten Heizband 5 angeordnet ist. Während des Achweißvorganges liest die Folie 12 zviscllen den Teflonbändern 10 und 11 und nicht unittelbar auf dem Heizband 5 und der Silikongummiauflage 8. Die konstruktive Ge-italtiung der Schweißdruckbacke 1 mit der Verstärkung der Druckspitze 2 und dem abgewinkelten Heizband 5 bewirken an der Spitze 13 eine höhere temperatur die zum Brennen der übereinanderliegenden Folien 12 führt. Dabei wird der Druck durch die Silikongummiauflage 8 und Schaumgummiunterlage 2 der Gegendruckbacke 9 von der Spitze 13 zu den äußeren Kanten 14 des'Heizbandes 5 so abgebaut, daß ein Verschweißen von Mehrfachlagen und Doppellagen ohne das Auftreten der schädlichen Kantenpressung an der Ubergangsstelle der verschweißten Folienlagen möglich ist. Pressure tip 2 is applied to the pipe cross-section 3 by two Tangents formed, which preferably include an angle of 90 to 150 °. The material of the tube 3 consists of a highly thermally conductive material through which Interior a coolant 4, such as. B. Line ground flows. At the pressure tip 2 is a impulsbelieiztes'in an angle corresponding to the pressure peak 2 curved heating tape 4 attached from Kanthslband. The pressure peak penetrates during the work cycle of the welding jaws 2 with the angled Ileizband 5 in a recess 6 with a foam rubber pad 7 and a silicone rubber pad 8 arranged upstream in the direction of action Counterpressure jaw 9. fever the silicone rubber pad 8 is a Teflon tape 10 stretched while a zvieites Peflon tape 11 resiliently at a certain distance in front of the angled Heating band 5 is arranged. During the welding process, the film 12 reads zviscllen the Teflon tapes 10 and 11 and not directly on the heating tape 5 and the silicone rubber pad 8. The constructive Ge-italtiung the welding pressure jaw 1 with the reinforcement of the Pressure tip 2 and the angled heating tape 5 cause a higher pressure at tip 13 temperature which leads to the burning of the overlapping foils 12. It will the pressure through the silicone rubber pad 8 and foam rubber pad 2 of the counter-pressure jaw 9 from the tip 13 to the outer edges 14 des'Heizbandes 5 so degraded that a Welding multiple layers and double layers without the occurrence of harmful ones Edge pressure at the transition point of the welded film layers is possible.

Ein geringer Schweißdruck ist möglich, da die an der Gegendruckbacke 9 angeordnete Silikongummiauflage 8 in Kombinstion mit der Schaumgummiunterlage 7 ein Ausgleichen von Druckunterschieden, entstehend durch unterschiedlich mehrfach zu verschweißende Folienlagen sowie das Trennen und gleichzeitige Flächenschweißen unmittelbar neben der Trennstelle, quer und längs zur Schweißnaht gewährleisteht.A low welding pressure is possible because the pressure on the counter pressure jaw 9 arranged silicone rubber pad 8 in combination with the foam rubber pad 7 a balancing of pressure differences caused by different Multiple layers of film to be welded as well as the separation and simultaneous surface welding directly next to the cutting point, across and along the weld seam.

Claims (3)

P a t e n t a n s p r ü c h e :P a t e n t a n s p r ü c h e: 1. Vorrichtung zum gleichzeitigen Trenn- und Flächenschweißen von mehreren Lagen thermoplastischer Folie mit gekühlter Schweißdruckbacke, an deren Wirkstelle ein impulsbeheiztes Band gegenübr einer aus hitzebeständigem, elastischem Material ausgebildeten Gegendruckbacke angeordnet ist, dadurech gekennzeichnet, daß die SChweißdruckbacke (1) aus einem Rohr aus £ut; wärmeleitfähigem Material, mit einer an seiner äuße ren Wandstärke in Längsrichtung angesetzten Druckspitze (2) besteht, auf der ein abgewinkeltes Heizband (5) gegenüber einer Silikongummiauflage (8) mit einer Schaumgummiunterlage (7) und einen Teflonband (10) bespannten Gegendruckbacke (9) angeordnet ist.1. Device for simultaneous cutting and surface welding of several layers of thermoplastic film with cooled welding pressure jaw, on whose The point of action is a pulse-heated belt versus one made of heat-resistant, elastic Material formed counter-pressure jaw is arranged, marked by this, that the welding pressure jaw (1) consists of a tube made of £ ut; thermally conductive material, with a pressure peak attached to its outer wall thickness in the longitudinal direction (2) consists on which an angled heating tape (5) opposite a silicone rubber pad (8) with a foam rubber pad (7) and a Teflon tape (10) covered counter-pressure jaw (9) is arranged. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß ein Teflonband (11) in einem bestimmten Abstand vor dem abgewinkelten Heizband (5) federnd angeordnet ist;0 2. Apparatus according to claim 1, characterized in that a Teflon tape (11) resiliently arranged at a certain distance in front of the angled heating band (5) is; 0 3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Heizband (5), vorzugsweise zwischen einem Winkel von 90 bis 150°, abgewinkelt ist.3. Apparatus according to claim 1, characterized in that the heating band (5), is preferably angled between an angle of 90 to 150 °.
DE19702015214 1969-04-23 1970-03-31 Simultaneous cutting and welding of - several thermoplastic film layers Pending DE2015214A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD13940969 1969-04-23

Publications (1)

Publication Number Publication Date
DE2015214A1 true DE2015214A1 (en) 1970-11-12

Family

ID=5481149

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19702015214 Pending DE2015214A1 (en) 1969-04-23 1970-03-31 Simultaneous cutting and welding of - several thermoplastic film layers

Country Status (3)

Country Link
CH (1) CH503564A (en)
DE (1) DE2015214A1 (en)
NL (1) NL6911175A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2801201A1 (en) * 1978-01-12 1979-07-19 Bosch Siemens Hausgeraete DEVICE FOR HEAT SEALING AND SEPARATION WELDING OF THIN LAYERS OF THERMOPLASTIC PLASTIC, IN PARTICULAR FILM HOSES, FILM SHEETS OR THE DGL.
DE4112346A1 (en) * 1991-04-16 1992-10-22 Franco Toss Heated tool, esp. metal band, for welding of plastic, e.g. polyethylene@ - comprises flexible band which deflects to give reduced pressure at edges, improving weld strength and avoiding penetration and extrusion
DE4311514B4 (en) * 1992-04-22 2008-11-13 Windmöller & Hölscher Kg Device for sealing foil webs of thermoplastic material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2801201A1 (en) * 1978-01-12 1979-07-19 Bosch Siemens Hausgeraete DEVICE FOR HEAT SEALING AND SEPARATION WELDING OF THIN LAYERS OF THERMOPLASTIC PLASTIC, IN PARTICULAR FILM HOSES, FILM SHEETS OR THE DGL.
DE4112346A1 (en) * 1991-04-16 1992-10-22 Franco Toss Heated tool, esp. metal band, for welding of plastic, e.g. polyethylene@ - comprises flexible band which deflects to give reduced pressure at edges, improving weld strength and avoiding penetration and extrusion
DE4311514B4 (en) * 1992-04-22 2008-11-13 Windmöller & Hölscher Kg Device for sealing foil webs of thermoplastic material

Also Published As

Publication number Publication date
CH503564A (en) 1971-02-28
NL6911175A (en) 1971-01-25

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