DE2551503C3 - Schweißmaschine für Kunststoffsäcke und -Bänder - Google Patents

Schweißmaschine für Kunststoffsäcke und -Bänder

Info

Publication number
DE2551503C3
DE2551503C3 DE2551503A DE2551503A DE2551503C3 DE 2551503 C3 DE2551503 C3 DE 2551503C3 DE 2551503 A DE2551503 A DE 2551503A DE 2551503 A DE2551503 A DE 2551503A DE 2551503 C3 DE2551503 C3 DE 2551503C3
Authority
DE
Germany
Prior art keywords
pair
welding
plastic bags
welding machine
air
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
Application number
DE2551503A
Other languages
English (en)
Other versions
DE2551503A1 (de
DE2551503B2 (de
Inventor
Dumitru Craiova Stanca
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.)
COMBINATUL CHIMIC CRAIOVA CRAIOVA RO
Original Assignee
COMBINATUL CHIMIC CRAIOVA CRAIOVA RO
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 COMBINATUL CHIMIC CRAIOVA CRAIOVA RO filed Critical COMBINATUL CHIMIC CRAIOVA CRAIOVA RO
Priority to DE2551503A priority Critical patent/DE2551503C3/de
Publication of DE2551503A1 publication Critical patent/DE2551503A1/de
Publication of DE2551503B2 publication Critical patent/DE2551503B2/de
Application granted granted Critical
Publication of DE2551503C3 publication Critical patent/DE2551503C3/de
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/32—Cooling, or cooling and pressing, package closures after heat-sealing
    • 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
    • B29C65/10—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined
    • 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
    • B29C66/03—After-treatments in the joint area
    • B29C66/034—Thermal after-treatments
    • B29C66/0342—Cooling, e.g. transporting through welding and cooling zone
    • 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
    • B29C66/70—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
    • 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
    • B29C66/73—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • 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
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B29C66/83413—Roller, cylinder or drum types cooperating rollers, cylinders or drums
    • 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
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83421—Roller, cylinder or drum types; Band or belt types; Ball types band or belt types
    • B29C66/83423—Roller, cylinder or drum types; Band or belt types; Ball types band or belt types cooperating bands or belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/20—Applying or generating heat or pressure or combinations thereof by fluid pressure acting directly on folds or on opposed surfaces, e.g. using hot-air jets
    • 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
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7858—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus characterised by the feeding movement of the parts to be joined
    • B29C65/7861—In-line machines, i.e. feeding, joining and discharging are in one production line
    • B29C65/787—In-line machines, i.e. feeding, joining and discharging are in one production line using conveyor belts or conveyor chains
    • B29C65/7873—In-line machines, i.e. feeding, joining and discharging are in one production line using conveyor belts or conveyor chains using cooperating conveyor belts or cooperating conveyor chains
    • 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
    • B29C66/81463—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 plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single joint
    • B29C66/81465—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 plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single joint one placed behind the other in a single row in the feed direction
    • 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
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/841—Machines or tools adaptable for making articles of different dimensions or shapes or for making joints of different dimensions
    • B29C66/8412—Machines or tools adaptable for making articles of different dimensions or shapes or for making joints of different dimensions of different length, width or height
    • B29C66/84123—Machines or tools adaptable for making articles of different dimensions or shapes or for making joints of different dimensions of different length, width or height of different height
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • 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
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7128—Bags, sacks, sachets

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Making Paper Articles (AREA)

Description

Die Erfindung betrifft eine Schweißmaschine für Kunststoffsäcke und -bänder, bestehend aus einer mit Heißluft betriebenen Schweißvorrichtung mit einem dahinter angeordneten Andruckrollenpaar, aus einer Kühlvorrichtung und aus einem Förderbandpaar für den Transport der zu verschweißenden Gegenstände.
Derartige Schweißmaschinen sind in mehrfacher Ausführung, z.B. durch die DE-PS 16 79 978 oder die US-PS 34 88 244, bekannt geworden. Die Verschweißung von mittels einer Fördervorrichtung transportierten Kunststoffsäcken erfolgt hier dadurch, daß Warmluft aus zwei gegenüberliegenden Backen auf die zu verschweißende Stelle geblasen wird, die den Kunststoff so hoch erwärmt, daß die aufeinanderliegenden Kunststoffteile sich miteinander verschweißen, worauf die Schweißstelle noch ein Andruckrollenpaar zur Sicherung der Verschweißung durchläuft, bevor die Schweißstelle gekühlt wird. Dieses Andruckrollenpaar weist keinen Antrieb auf und ist auch nur mit geringem Druck beaufschlagt.
Es ist die Aufgabe der Erfindung, mit geringerer Erwärmung bei der Verschweißung auszukommen. Die Erfindung löst diese Aufgabe dadurch, daß der Antrieb des Andruckrollenpaares ebenso wie weiterer Transportrollenpaare im Bereich der Schweißvorrichtung und der Kühlvorrichtung durch tangentiale Reibung an Keilriemen abgeleitet ist, die von den Antriebsrollenpaaren der Förderbänder angetrieben sind.
Hierdurch wird das Andruckrollenpaar zu einem Paar von Schweißrollen, die — da ihr Antrieb mit dem Antrieb des Förderbandes synchronisiert ist — hohen Druck aufweisen können und dabei auch bei niedrigerer Erhitzung des Kunststoffes eine exakte Verschweißung gewährleisten. Das erbringt den Vorteil einwandfreier Schweißstellen.
Die Erfindung wird anhand eines in der Zeichnung schematisch dargestellten Ausführungsbeispieles näher erläutert. Es zeigt
F i g. 1 eine Gesamtansicht der Schweißmaschine,
Fig.2 eine Ansicht der Schweißvorrichtung mit Luftzuführung,
F i g. 3 ein Detail mit der Anordnung der Öffnungen auf der Oberfläche der Heizbacken,
F i g. 4 ein Schnitt durch die Lufterwärmungsvorrichtung,
F i g. 5 eine Ansicht mit Schnitt durch die Druckrolle.
Die Schweißmaschine für Kunststoffsäcke und
-bänder besteht aus einer Transportvorrichtung A, einem Maschinenständer B als Rahmen der gesamten Maschine, einem Luftpuffergefäß Q einer elektrischen Anlage D, einer Hebe- und Niederführungsvorrichtung
E, einer Erwärmungsvorrichtung F und einer Steuerungstafel G.
Das zum Verschweißen bestimmte Material 1 wird durch ein Förderbandpaar A in Pfeilnchtung transportiert. Mit Hilfe eines Antriebsrollenpaares 2, welches zwei Keilriemenpaare 3 antreibt, die tangential die Transportrollen 4, die Andruckrollenpaare 5 und die Transportrollenpaare 6 antreiben, wird das Material zwischen zwei Heizbacken 7 geführt, die mit warmer Luft gespeist sind. Die warme Luft strömt durch in den Heizbackenoberflächen vorgesehene öffnungen 8 heraus und plastifiziert das Material, welches dann durch die Druckrollen 5 zusammengedrückt und somit verschweißt wird.
Dahinter gelangt das Material in die Kühlzone zwischen zwei Kühlbacken 9, die identisch mit den Heizbacken 7 sind, aber mit kalter Luft gespeist sind und weiter zwischen zwei Andruckrollen 5 in eine weitere Kühlzone zwischen zwei Kühlbacken 10, die ebenfalls mit kalter Luft gespeist sind. Das geschweißte Material verläßt die Verschweißeinrichtung mit der Temperatur der Umgebungsluft.
Der Wärmeträger — die Luft — ist aus der Betriebsluftanlage entnommen, durch einen Druckausgleicher Cgeleitet und tritt dann in die Heizvorrichtung
F, in der die Luft wegen der Öffnungsanordnung einen zickzackförmigen Weg (F i g. 4) zurücklegen muß. Die Durchmesser der Rohre 12 sind so gewählt worden, daß sie eins in das andere eindringen und einen freien Raum zwischen ihnen lassen, durch den die Luft strömen kann, bis sie in diü Zentralzone gelangt, von wo sie nach der Erwärmung durch die elektrischen Widerstände 13 und 14 zur Schweißstelle geleitet wird.
Der Antrieb des Transportsystems wird durch handelsübliche Transmissionsriemen mit trapezförmigem Querschnitt aus Gummi mit Textileinlage durchgeführt.
Der Ersatz der Transmissionsriemen ist leicht und in kurzer Zeit durchzuführen.
Die Heizvorrichtung sichert eine abgestufte Erwärmung der Luft mit maximalem Wirkungsgrad, da die Zwischenwände und die Heizwiderstände so angeordnet sind, daß die Luft durch die Zentralzone mit der gewünschten Temperatur austritt und damit ungewünschte technologische Unterbrechungen vermeidet.
Jeder Bestandteil der Schweißvorrichtung kann rasch ersetzt werden.
Hierzu 4 Blatt Zeichnungen

Claims (1)

  1. Patentanspruch:
    Schweißmaschine für Kunststoffsäcke und -bänder, bestehend aus einer mit Heißluft betriebenen Schweißvorrichtung mit einem dahinter angeordneten Andruckrollenpaar, aus einer Kühlvorrichtung und aus einem Förderbandpaar für den Transport der zu verschweißenden Gegenstände, dadurch gekennzeichnet, daß der Antrieb des Andruckrollenpaares (5) ebenso wie weiterer Transportrollenpaare (4, 6) im Bereich der Schweißvorrichtung (7) und der Kühlvorrichtung (10) durch tangentiale Reibung an Keilriemen (3) abgeleitet ist, die von den Antriebsrollenpaaren der Förderbänder angetrieben sind.
DE2551503A 1975-11-17 1975-11-17 Schweißmaschine für Kunststoffsäcke und -Bänder Expired DE2551503C3 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2551503A DE2551503C3 (de) 1975-11-17 1975-11-17 Schweißmaschine für Kunststoffsäcke und -Bänder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2551503A DE2551503C3 (de) 1975-11-17 1975-11-17 Schweißmaschine für Kunststoffsäcke und -Bänder

Publications (3)

Publication Number Publication Date
DE2551503A1 DE2551503A1 (de) 1977-10-06
DE2551503B2 DE2551503B2 (de) 1981-03-12
DE2551503C3 true DE2551503C3 (de) 1981-10-22

Family

ID=5961914

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2551503A Expired DE2551503C3 (de) 1975-11-17 1975-11-17 Schweißmaschine für Kunststoffsäcke und -Bänder

Country Status (1)

Country Link
DE (1) DE2551503C3 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10034910C2 (de) * 2000-07-18 2002-08-14 Windmoeller & Hoelscher Vorrichtung zum Heißsiegeln

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD73632A (de) *
CH323684A (de) * 1956-04-13 1957-08-15 Studer Fritz Schweissvorrichtung für thermoplastische Kunststoffe
GB1042415A (en) * 1964-05-11 1966-09-14 Basf Ag Apparatus for continuous heat sealing of plastics sheeting
US3488244A (en) * 1965-01-21 1970-01-06 Albemarle Paper Mfg Co Heat sealing apparatus
GB1200302A (en) * 1966-10-25 1970-07-29 Comitex Ltd Improvements to heat sealing machines

Also Published As

Publication number Publication date
DE2551503A1 (de) 1977-10-06
DE2551503B2 (de) 1981-03-12

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