DE1279320B - Ultrasonic welding device for welding thermoplastics - Google Patents

Ultrasonic welding device for welding thermoplastics

Info

Publication number
DE1279320B
DE1279320B DEH50809A DEH0050809A DE1279320B DE 1279320 B DE1279320 B DE 1279320B DE H50809 A DEH50809 A DE H50809A DE H0050809 A DEH0050809 A DE H0050809A DE 1279320 B DE1279320 B DE 1279320B
Authority
DE
Germany
Prior art keywords
welding
anvil
hammer
thermoplastics
welding device
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
DEH50809A
Other languages
German (de)
Inventor
Rolf Herfurth
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.)
Herfurth GmbH
Original Assignee
Herfurth 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 Herfurth GmbH filed Critical Herfurth GmbH
Priority to DEH50809A priority Critical patent/DE1279320B/en
Publication of DE1279320B publication Critical patent/DE1279320B/en
Pending 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
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B29C65/083—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil
    • B29C65/086—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil using a rotary anvil
    • 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
    • B29C66/40—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
    • B29C66/45—Joining of substantially the whole surface of the 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
    • B29C66/73—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
    • 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
    • B29C66/81433—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 being toothed, i.e. comprising several teeth or pins, or being patterned
    • B29C66/81435—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 being toothed, i.e. comprising several teeth or pins, or being patterned comprising several parallel ridges, e.g. for crimping
    • 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
    • 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
    • B29L2009/00—Layered products

Description

Uitraschall-Schweißvorrichtung zum Schweißen von thermoplastischen Kunststoffen Die Erfindung betrifft eine Ultraschall-Schweißvorrichtung zum Schweißen von thermoplastischen Kunststoffen oder damit beschichteten Gegenständen mit einem Hammer und einem Amboß zwischen deren Schweißflächen der Kunststoff unter Druck mittels Ultraschall erhitzt und geschmolzen wird.Ultrasonic welding device for welding thermoplastics Plastics The invention relates to an ultrasonic welding device for welding of thermoplastics or objects coated therewith with a Hammer and an anvil between the welding surfaces of the plastic under pressure is heated and melted using ultrasound.

Es ist bekannt, thermoplastische Kunststoffe durch periodische Druckschwingungen hoher Frequenz zu verschweißen. Dafür wird bei einer bekannten Vorrichtung von einem Hochfrequenzgenerator erzeugte elektrische Energie in mechanische Schwingungen umgesetzt, die auf einen Schalleiter übertragen werden, der das zu verschweißende Material auf Schweißtemperatur erwärmt. It is known that thermoplastic plastics are produced by periodic pressure oscillations weld at high frequency. For this is in a known device of a Electrical energy generated by the high-frequency generator converted into mechanical vibrations, which are transferred to a sound conductor that carries the material to be welded heated to welding temperature.

Um eine notwendige Schweißtemperatur für die Plastifizierung des Schweißgutes zu erreichen, muß ein erheblicher Anpreßdruck zwischen Hammer und Amboß ausgeübt werden. Dies ist mit dem Nachteil verbunden, daß besonders bei stärkeren Materialschichten plastifizierter Kunststoff aus den Werkzeugen seitlich herausgedrückt wird, bevor die eigentliche Schweißtemperatur erreicht ist. Dadurch tritt eine unregelmäßige Schwächung der zu erzeugenden Schweißnaht ein. In order to achieve a necessary welding temperature for the plasticization of the To achieve weld metal, there must be considerable contact pressure between the hammer and anvil be exercised. This is associated with the disadvantage that especially with stronger Layers of plasticized plastic material pressed out of the side of the tools before the actual welding temperature is reached. This causes an irregular Weakening of the weld to be produced.

Man hat versucht, dem durch eine Verringerung des Anpreßdruckes abzuhelfen. Diese Maßnahme ist aber nicht ausreichend, denn dabei hebt sich der Schalleiter von der Materialoberfläche so weit ab, daß keine ausreichende Wärme erzeugt, sondern das Material von dem Schalleiter zerstört wird. Attempts have been made to remedy this by reducing the contact pressure. However, this measure is not sufficient, because the sound conductor is lifted from the material surface so far that no sufficient heat is generated, but the material is destroyed by the sound conductor.

Aufgabe der Erfindung ist es, eine Ultraschall-Schweißvorrichtung zu schaffen, mit der eine regelmäßige Schweißnaht auch bei Anwendung hoher Anpreßdrucke herzustellen ist. Eine Lösung dieser Aufgabe wurde darin gefunden, daß die Schweißfläche des Hammers und/oder des Ambosses mit einer Profilierung für die Aufnahme des geschmolzenen Schweißgutes während des Schweißvorganges versehen ist. The object of the invention is to provide an ultrasonic welding device to create a regular weld seam even when high pressure is applied is to be established. A solution to this problem has been found in that the welding surface the hammer and / or the anvil with a profile for receiving the molten Weld metal is provided during the welding process.

Beim Betrieb einer derartigen Schweißvorrichtung wird vorzugsweise der zu Beginn der Erwärmung vorhandene, auf das Schweißgut spezifisch einwirkende Druck mit ansteigender Temperatur abgebaut, bis er bei Erreichen der Schweißtemperatur demjenigen Preßdruck entspricht, der für das jeweilige Schweißgut kennzeichnend ist. Zu Beginn der Erwärmung wirkt der Gesamtdruck lediglich auf eine geringe Teilfläche des Schweißgutes bei einem hohen spezifischen Druck, und das Schweißgut kann die periodischen Druckschwingungen in Biege- und Schubbewegungen umwandeln, weil es zunächst frei in die Hohlräume der Profilierung schwingen kann, wodurch sich größere Amplituden ergeben. Sobald das Schweißgut zunehmend erweicht, sinkt der Hammer oder Amboß tiefer in das Material ein, und der spezifische Druck nimmt ab, bis schließlich die Hohlräume ausgefüllt sind und der Preßdruck auf die gesamte Fläche wirkt. Dabei ist es von Vorteil, daß der erweichte Kunststoff durch sein Eindringen in die Profilierung nicht an den Seiten der Werkzeuge herausgequetscht wird. Eine dabei zweckmäßige Wärmeabfuhr läßt sich gemäß einer Ausgestaltung der Erfindung dadurch erreichen, daß der profilierte Amboß als Drehförderer ausgebildet ist. When operating such a welding device is preferred that which is present at the beginning of the heating and has a specific effect on the weld metal Pressure is reduced with increasing temperature until it has reached the welding temperature corresponds to that pressure which is characteristic of the respective weld metal is. At the beginning of the heating, the total pressure only acts on a small sub-area of the weld metal at a high specific pressure, and the weld metal can die convert periodic pressure oscillations into bending and shear movements because it can initially swing freely into the cavities of the profiling, making bigger Result in amplitudes. As soon as the weld metal increasingly softens, the hammer or sinks The anvil goes deeper into the material, and the specific pressure decreases until finally the cavities are filled and the pressure acts on the entire surface. Included it is advantageous that the softened plastic penetrates the profiling is not squeezed out on the sides of the tools. An expedient one According to one embodiment of the invention, heat dissipation can be achieved by that the profiled anvil is designed as a rotary conveyor.

Zwei in einer Zeichnung schematisch dargestellte Ausführungsbeispiele der Erfindung sind nachstehend unter Bezugnahme auf die Zeichnung erläutert. In dieser zeigt Fig. 1 Hammer und Amboß einer Schweißvorrichtung mit zwei zwischen ihnen liegenden Folien, F i g. 2 die geschweißten Folien, Fig. 3 eine Schweißvorrichtung mit profiliertem Amboß als Drehförderer. Two exemplary embodiments shown schematically in a drawing of the invention are explained below with reference to the drawing. In this shows Fig. 1 hammer and anvil of a welding device with two between foils lying on them, F i g. 2 the welded foils, FIG. 3 a welding device with a profiled anvil as a rotary conveyor.

Bei der Anordnung nach Fig. 1 liegen zwischen einem Hammer 1 und dem Amboß 2 als Gegenwerkzeug zwei zu verschweißende Folien3 und 4. Die dem Schweißgut zugekehrte Oberfläche des Hammers 1 als Schalleiter und die entsprechende Oberfläche des Ambosses 2 als Gegenwerkzeug weisen eine Profilierung 5 auf. Die Profilierung 5 kann von verschiedener Form sein. Von Bedeutung ist, daß sie zu einer wesentlich größeren Oberfläche führt. In the arrangement of FIG. 1 lie between a hammer 1 and the anvil 2 as a counter tool two foils 3 and 4 to be welded facing surface of the hammer 1 as a sound conductor and the corresponding surface of the anvil 2 as a counter tool have a profile 5. The profiling 5 can be of various forms. What matters is that they become an essential larger surface leads.

Sobald der nicht dargestellte Wandler seine Frequenz an den Schalleiter 1 abgibt, beginnen beide Werkzeuge, nämlich der Schalleiter bzw. Hammer 1 und das Gegenwerkzeug bzw. der Amboß 2 mit ihren profilierten Oberflächen unter hoher Frequenz gegeneinander zu schwingen, so daß die Folien. 3 und 4 im Rhythmus dieser Frequenz zusammengepreßt und entspannt werden, wodurch zunächstReibungswärme entsteht und schließlich die zum Plastifizieren erforderliche Temperatur. As soon as the converter, not shown, transfers its frequency to the sound conductor 1 emits, both tools begin, namely the sound conductor or hammer 1 and the Counter tool or the anvil 2 with their profiled surfaces at high frequency to vibrate against each other, so that the foils. 3 and 4 in the rhythm of this frequency are compressed and relaxed, which initially creates frictional heat and finally the temperature required for plasticizing.

In F i g. 2 ist die Schweißzone der beiden miteinander nach der Erfindung verschweißten Folien 3 und 4 dargestellt. Es ist erkennbar, daß das bis zur Schweißtemperatur erwärmte Schweißgut nicht etwa seitlich aus der Schweißzone herausgedrückt wurde, sondern durch die Profilierung der Oberflächen des hammers i lundAmbosses 2 im Bereich der Schweißzone verblieben ist.-Bei der Anordnung nach Fig. 3 ist das Gegenwerkzeug 6 als - Dreliförderer in der Art einer Treibt rolle ausgebildet, die mit einer Profilierung 5 versehen ist und die Folien 3 und 4 kontinuierlich. unter den eine glatte Oberfläche aufweisenden Schalleiter 1 fördert. In Fig. 2 is the welding zone of the two together according to the invention welded foils 3 and 4 shown. It can be seen that this is up to welding temperature heated weld metal has not been pushed out of the weld zone to the side, but by the profiling of the surfaces of the hammer i lund anvil 2 in the area the welding zone has remained. In the arrangement according to FIG. 3, the counter-tool is 6 as - Dreli conveyor in the manner of a drive roller designed with a profiling 5 is provided and the foils 3 and 4 are continuous. under which a smooth surface having sound conductor 1 promotes.

Die Vorrichtungen eignen sich insbesondere zum Schweißen~von mit Fiillgut versehenen Behältnissen, da die ausstrahlende Schweißtemperatur durch die Werkzeuge 1 und 2 abgeführt wird, so daß die Schweißzone innen heißer als außen bleibt. The devices are particularly suitable for welding with Filled containers, since the radiating welding temperature by the Tools 1 and 2 is removed so that the weld zone is hotter inside than outside remain.

Claims (2)

Patentansprüche: 1. Ultraschall-Schweißvorrichtung zum Schweißen von thermoplastischen Kunststoffen mit einem Hammer und einem Amboß, zwischen deren Schweißflächen der Kunststoff unter Druck mittels Ultraschall erhitzt und geschmolzen wird, dadurch gekennzeichnet, daß die Schweißfläche des Hammers (1) und/oder des Ambosses (2) mit einer Profilierung (5) für die Aufnahme des geschmolzenen Schweißgutes während des SAchweißvorganges versehen ist. Claims: 1. Ultrasonic welding device for welding of thermoplastics with a hammer and an anvil, between their Welding surfaces of the plastic are heated and melted under pressure by means of ultrasound is, characterized in that the welding surface of the hammer (1) and / or the Anvil (2) with a profile (5) for receiving the molten weld metal is provided during the S welding process. 2. Ultraschall-Schweißvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der profilierte Amboß (2> als Drehförd'e'rer ausgebildet ist. 2. Ultrasonic welding device according to claim 1, characterized in that that the profiled anvil (2> is designed as a rotary conveyor. In Betracht gezogene Druckschriften: Deutsche Patentschriften Nr. 980 064, 844 063, 834 899. Considered publications: German Patent Specifications No. 980 064, 844 063, 834 899.
DEH50809A 1963-11-12 1963-11-12 Ultrasonic welding device for welding thermoplastics Pending DE1279320B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEH50809A DE1279320B (en) 1963-11-12 1963-11-12 Ultrasonic welding device for welding thermoplastics

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH50809A DE1279320B (en) 1963-11-12 1963-11-12 Ultrasonic welding device for welding thermoplastics

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DE1279320B true DE1279320B (en) 1968-10-03

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DEH50809A Pending DE1279320B (en) 1963-11-12 1963-11-12 Ultrasonic welding device for welding thermoplastics

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0008362A1 (en) * 1978-07-27 1980-03-05 Agfa-Gevaert AG Method and apparatus for continously thickening and roughening the sides of a thermoplastic web
US4767492A (en) * 1986-04-18 1988-08-30 Pola Chemical Industries, Inc. Ultrasonic fuse-bonding sealing apparatus with improved contact surfaces
EP0340334A2 (en) * 1988-05-05 1989-11-08 Drescher Geschäftsdrucke Gmbh Apparatus for joining two or multilayered paper articles together
DE3941015A1 (en) * 1988-12-13 1990-06-21 Tetra Pak Holdings & Finance Welding of two overlapping thermoplastic sheets - in which welding cheek with relief pattern formed of raised bars and recesses retains majority of polymer during welding phase
EP0435638A1 (en) * 1989-12-25 1991-07-03 Sumitomo Bakelite Company Limited Easily openable sealed container and process for producing the same
DE9317104U1 (en) * 1993-11-09 1994-02-10 Kaminski Renald Device for welding film edges
WO1996014201A1 (en) * 1994-11-04 1996-05-17 Tetra Laval Holdings & Finance S.A. Device for sealing plastic foam sheets
EP0979723A2 (en) * 1998-08-10 2000-02-16 Shikoku Kakoki Co., Ltd. Heat-sealing apparatus
EP1088760A3 (en) * 1999-09-30 2002-02-13 Shikoku Kakoki Co., Ltd. Ultrasonic sealing apparatus
EP2113371A1 (en) * 2008-04-29 2009-11-04 Tetra Laval Holdings & Finance SA Sealing jaw for producing sealed packages of a food product
NL2007491C2 (en) * 2011-09-28 2013-04-02 Plastifran B V METHOD FOR CONNECTING EAR BRANDS.
CN109895403A (en) * 2017-12-11 2019-06-18 青岛海尔洗衣机有限公司 A kind of welding method of electric appliance display device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE834899C (en) * 1948-04-21 1952-03-24 Raytheon Mfg Co Method and device for welding thermoplastics
DE844063C (en) * 1943-08-29 1952-07-17 Bayer Ag Welding of plastics
DE880064C (en) * 1951-12-25 1953-06-18 Lehfeldt & Co G M B H Dr Method for heating thermoplastics

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE844063C (en) * 1943-08-29 1952-07-17 Bayer Ag Welding of plastics
DE834899C (en) * 1948-04-21 1952-03-24 Raytheon Mfg Co Method and device for welding thermoplastics
DE880064C (en) * 1951-12-25 1953-06-18 Lehfeldt & Co G M B H Dr Method for heating thermoplastics

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0008362A1 (en) * 1978-07-27 1980-03-05 Agfa-Gevaert AG Method and apparatus for continously thickening and roughening the sides of a thermoplastic web
US4767492A (en) * 1986-04-18 1988-08-30 Pola Chemical Industries, Inc. Ultrasonic fuse-bonding sealing apparatus with improved contact surfaces
EP0340334A2 (en) * 1988-05-05 1989-11-08 Drescher Geschäftsdrucke Gmbh Apparatus for joining two or multilayered paper articles together
EP0340334A3 (en) * 1988-05-05 1991-03-06 Drescher Geschäftsdrucke Gmbh Apparatus for joining two or multilayered paper articles together
DE3941015C2 (en) * 1988-12-13 1998-04-02 Tetra Laval Holdings & Finance Device for permanently connecting web material zones by thermal welding
DE3941015A1 (en) * 1988-12-13 1990-06-21 Tetra Pak Holdings & Finance Welding of two overlapping thermoplastic sheets - in which welding cheek with relief pattern formed of raised bars and recesses retains majority of polymer during welding phase
EP0435638A1 (en) * 1989-12-25 1991-07-03 Sumitomo Bakelite Company Limited Easily openable sealed container and process for producing the same
US5316603A (en) * 1989-12-25 1994-05-31 Taiwan Semiconductor Manufacturing Company Easily openable sealed container and process for producing the same
DE9317104U1 (en) * 1993-11-09 1994-02-10 Kaminski Renald Device for welding film edges
US5490626A (en) * 1993-11-09 1996-02-13 Kaminski; Renald Device for welding foil edges
WO1996014201A1 (en) * 1994-11-04 1996-05-17 Tetra Laval Holdings & Finance S.A. Device for sealing plastic foam sheets
EP0979723A2 (en) * 1998-08-10 2000-02-16 Shikoku Kakoki Co., Ltd. Heat-sealing apparatus
EP0979723A3 (en) * 1998-08-10 2002-03-13 Shikoku Kakoki Co., Ltd. Heat-sealing apparatus
EP1088760A3 (en) * 1999-09-30 2002-02-13 Shikoku Kakoki Co., Ltd. Ultrasonic sealing apparatus
US7178316B2 (en) 1999-09-30 2007-02-20 Shikoku Kakoki Co., Ltd. Ultrasonic sealing apparatus
EP2113371A1 (en) * 2008-04-29 2009-11-04 Tetra Laval Holdings & Finance SA Sealing jaw for producing sealed packages of a food product
WO2009133075A1 (en) * 2008-04-29 2009-11-05 Tetra Laval Holdings & Finance S.A. Sealing jaw for producing sealed packages of a food product
CN102015254A (en) * 2008-04-29 2011-04-13 利乐拉瓦尔集团及财务有限公司 Sealing jaw for producing sealed packages of a food product
RU2490129C2 (en) * 2008-04-29 2013-08-20 Тетра Лаваль Холдингз Энд Файнэнс С.А. Sealing clamp for making sealed food product packs
US8572936B2 (en) 2008-04-29 2013-11-05 Tetra Laval Holdings & Financne S.A. Sealing jaw for producing sealed packages of a food product
CN105667898A (en) * 2008-04-29 2016-06-15 利乐拉瓦尔集团及财务有限公司 Sealing jaw for producing sealed packages of a food product
NL2007491C2 (en) * 2011-09-28 2013-04-02 Plastifran B V METHOD FOR CONNECTING EAR BRANDS.
CN109895403A (en) * 2017-12-11 2019-06-18 青岛海尔洗衣机有限公司 A kind of welding method of electric appliance display device
CN109895403B (en) * 2017-12-11 2022-04-26 合肥海尔滚筒洗衣机有限公司 Welding method of electric appliance display device

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