DE866974C - Device for welding thermoplastic plastic films between metal electrodes in an electrical high-frequency field - Google Patents

Device for welding thermoplastic plastic films between metal electrodes in an electrical high-frequency field

Info

Publication number
DE866974C
DE866974C DEP13677A DEP0013677A DE866974C DE 866974 C DE866974 C DE 866974C DE P13677 A DEP13677 A DE P13677A DE P0013677 A DEP0013677 A DE P0013677A DE 866974 C DE866974 C DE 866974C
Authority
DE
Germany
Prior art keywords
frequency field
metal electrodes
plastic films
electrode
thermoplastic plastic
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
DEP13677A
Other languages
German (de)
Inventor
Arthur Schmidt
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.)
Telefunken AG
Original Assignee
Telefunken AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Telefunken AG filed Critical Telefunken AG
Priority to DEP13677A priority Critical patent/DE866974C/en
Application granted granted Critical
Publication of DE866974C publication Critical patent/DE866974C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/04—Dielectric heating, e.g. high-frequency welding, i.e. radio frequency welding of plastic materials having dielectric properties, e.g. PVC
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/004—Preventing sticking together, e.g. of some areas of the parts to be joined
    • B29C66/0042—Preventing sticking together, e.g. of some areas of the parts to be joined of the joining tool and the parts to be joined
    • B29C66/0044—Preventing sticking together, e.g. of some areas of the parts to be joined of the joining tool and the parts to be joined using a separating sheet, e.g. fixed on the joining tool
    • 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
    • B29C66/73—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
    • B29C66/812—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

Landscapes

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

Description

Die Erfindung betrifft eine Einrichtung zum VerschWeißen- von thermoplastischen Kunststoff-Folien oder mit einem thermoplastischen Kunststoff überzogenen Geweben im elektrischen Hochfrequenzfeld. The invention relates to a device for welding thermoplastics Plastic films or fabrics covered with a thermoplastic material in the high-frequency electric field.

Es ist bekannt, daß man thermoplastische Kunststoffe im elektrischen Hochfrequenzfeld erwärmen urin durch ZuSammenpressen dauerhaft miteinander ~verbinden--kann. Auf diese Weise können aus Kunststoff-Folien oder mit einem Kunststoff überzogenen Geweben Kleidungsstücke, Taschen, Schuhoberteile und andere Gebrauchs- oder Ziergegenstände hergestellt werden. Das Verschweißen geschieht mit Hilfe von Metallelektroden, welche entweder fest oder als Rollen ausgebildet sind und im letzteren Fall längs der Schweißnaht über die Kunststoffteile geführt werden. Infolge der notwendigen Druckanwendung wird die mit den Elektroden in Berührung kommende Oberfläche der Kunststoff-Folie leicht glänzend und hebt sich dadurch von der Nachbarschaft ab. Dies ist in vielen Fällen unerwünscht, insbesondere dann, wenn die Oberfläche der Folie oder des Gewebes genarbt oder mattiert ist. It is known that thermoplastics are used in electrical High-frequency field heats urine by squeezing it together permanently ~ - can - can. In this way, plastic films or coated with a plastic can be used Woven articles of clothing, bags, uppers and other utensils or ornaments getting produced. The welding is done with the help of metal electrodes, which are either fixed or designed as rollers and in the latter case along the weld seam be guided over the plastic parts. As a result of the necessary pressure application becomes the surface of the plastic film that comes into contact with the electrodes slightly shiny and stands out from the neighborhood. This is in many Cases undesirable, especially when the surface of the film or fabric is grained or matted.

Es sind bereits Einrichtungen bekannt, um das Haftenbleiben des zu schweißenden Stoffes an der Elektrode beim Schweißvorgang zu verhindern. There are already devices known to prevent the sticking to to prevent welding material on the electrode during the welding process.

In einer bekannten Vorrichtung dieser Art besitzt die eine Elektrode einen Überzug aus einemIsoliermaterial hohen Widerstandes in Form einer Folie.In a known device of this type, one has an electrode a coating of a high resistance insulating material in the form of a film.

Dieser Überzug besteht aus einem wärmehärtenden Material, beispielsweise einem Harz auf Phenolformaldehydbasis, d. h. einem nichtthermoplastischen Werkstoff. Auch bei einem solchen Gerät wird das Blankwerden des Stoffes beim Schweißen verhindert.This coating consists of a thermosetting material, for example a phenol formaldehyde based resin; d. H. a non-thermoplastic material. Such a device also prevents the material from becoming bare during welding.

Die Erfindung geht von diesem bekannten Stand der Technik aus und besteht im wesentlichen darin, daß sich zwischen Elektrode und Werkstück allein eine Zwischenlage aus ungetränktem Papier, insbesondere transparentem Zeichenpapier; befindet. The invention is based on this known prior art and consists essentially in the fact that there is alone between the electrode and the workpiece an intermediate layer made of unimpregnated paper, in particular transparent drawing paper; is located.

Man hat zwar schon Papier als Zwischenlage zwischenwElektrode und Werkstoff beim Schweißen im Hochfrequenzfeld verwendet. Dieses Papier war aber bisher mit einem thermohärtenden Harz imprägniert, diente also offensichtlich nur als Träger für das nichtthermoplastische Material. You already have paper as an intermediate layer between the electrode and Material used in welding in a high frequency field. This paper was so far Impregnated with a thermosetting resin, so obviously only served as a carrier for the non-thermoplastic material.

Die Einrichtung nach der Erfindung hat demgegenüber den Vorteil der größeren Einfachheit und der Verbilligung des Gerätes. Auch ist die Verwendung einer einzigen Zwischenlage aus ungetränktem Papier bisher nicht bekanntgeworden. The device according to the invention has the advantage of greater simplicity and the cheaper device. Also is the use of a single interlayer made of unimpregnated paper has not yet become known.

Die Zwischenlage aus ungetränktem Papier, insbesondere transparentem Zeichenpapier, verhindert, daß die Stellen des Werkstückes, auf denen die Elektrode aufliegt, einen Druckglanz bekommen. The intermediate layer made of unimpregnated paper, especially transparent Drawing paper, prevents the spots of the workpiece on which the electrode is on, get a print gloss.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung in zwei Rissen schematisch dargestellt. Es handelt sich um die Herstellung einer Schweißnaht zwischen den beiden Lagen I, 2 einer thermoplastischen Kunststoff-Folie. Diese ruhen auf einer unteren flächenhaften Elektrode 3, während die obere Elektrode 4 als Rolle ausgebildet ist, die sich um eine Achse 5 dreht. Die obere Elektrode wird über die Nahtstelle unter Druck hinweggeführt, pder es werden die Stoffbahnen unter ihr hinweggezogen. Zur Verhütung des Entstehens glänzender Druckstellen ist die Rollenelektrode 4 am Umfang mit einer Auflage 6 aus Papier, insbesondere transparentem Zeichenpapier, oder Pergament versehen. Eine solche Auflage kann auch auf einer festen Elektrode, z. B. der unteren Elektrode 3, angebracht werden. Die Verhütung des Druckglanzes ist möglicherweise darauf zurückzuführen, daß die Zwischenlage beim Verdampfen des Feuchtigkeitsgehaltes oder anderer flüchtiger, Stoffe eine aufsaugende Wirkung ausübt. Die Papierzwischenlage kann auch einfach lose auf das Werkstück aufgelegt werden. Sie verhindert gleichzeitig das Kleben der erweichten Kunststoft-Folie I an der Elektrode 4. In the drawing is an embodiment of the invention in two Cracks shown schematically. It is the production of a weld seam between the two layers I, 2 of a thermoplastic plastic film. These rest on a lower planar electrode 3, while the upper electrode 4 as a role which rotates about an axis 5. The top electrode is connected to the Seam led away under pressure, or the fabric webs are pulled away from under it. To prevent glossy pressure points from occurring, the roller electrode 4 is on Scope with an edition 6 made of paper, in particular transparent drawing paper, or parchment. Such a support can also be on a fixed electrode, z. B. the lower electrode 3, are attached. The prevention of print gloss is possibly due to the fact that the liner during evaporation of the Moisture content or other volatile substances has an absorbent effect. The paper interlayer can also simply be placed loosely on the workpiece. At the same time, it prevents the softened plastic film I from sticking to the Electrode 4.

PATENTANSPR(}CEXE: I. Einrichtung zum Verschweißen thermoplastischer Kunststoff-Folien zwischen Metallelektroden im Hochfrequenzfeld, dadurch gekennzeichnet, daß sich zwischen Elektrode und Werkstück allein eine Zwischenlage aus ungetränktem Papier, insbesondere transparentem Zeichenpapier, befindet. PATENT APPLICATION (} CEXE: I. Device for welding thermoplastic Plastic foils between metal electrodes in the high-frequency field, characterized in that between the electrode and the workpiece there is only an intermediate layer of unimpregnated Paper, especially transparent drawing paper, is located.

Claims (1)

2. Einrichtung nach Anspruch I, dadurch gekennzeichnet, daß die Papierzwischenlage an einer Elektrode, insbesondere einer rollenförmigen Elektrode, befestigt ist. 2. Device according to claim I, characterized in that the paper intermediate layer is attached to an electrode, in particular a roller-shaped electrode. Angezogene Druckschriften: Britische Patentschriften Nr. 577 7I9, 577 720; Abridgment der britischen Patentschrift Nr. 577 474; USA.-Patentschriften Nr. I 8o6 846, 2 s33 175 2233 I76; Transactions of the American Society of Mechanical Engineers, Februar I947, 5. 159. References: British Patent Specification No. 577 71 19, 577 720; Abridgment of British Patent No. 577,474; U.S. Patents No. I 8o6 846, 2 s33 175 2233 I76; Transactions of the American Society of Mechanical Engineers, February I947, 5th 159.
DEP13677A 1948-10-02 1948-10-02 Device for welding thermoplastic plastic films between metal electrodes in an electrical high-frequency field Expired DE866974C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP13677A DE866974C (en) 1948-10-02 1948-10-02 Device for welding thermoplastic plastic films between metal electrodes in an electrical high-frequency field

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP13677A DE866974C (en) 1948-10-02 1948-10-02 Device for welding thermoplastic plastic films between metal electrodes in an electrical high-frequency field

Publications (1)

Publication Number Publication Date
DE866974C true DE866974C (en) 1953-02-12

Family

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DEP13677A Expired DE866974C (en) 1948-10-02 1948-10-02 Device for welding thermoplastic plastic films between metal electrodes in an electrical high-frequency field

Country Status (1)

Country Link
DE (1) DE866974C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1006096B (en) * 1953-04-22 1957-04-11 Siemens Ag High frequency welding device for plastic foils

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1806846A (en) * 1931-05-26 Vania
US2233176A (en) * 1940-03-28 1941-02-25 Carborundum Co Manufacture of bonded abrasive articles
US2233175A (en) * 1940-03-28 1941-02-25 Carborundum Co Manufacture of abrasive coated articles
GB577474A (en) * 1944-04-22 1946-05-20 British Insulated Cables Ltd Improvements relating to apparatus for heating insulating material by subjecting it to a high frequency field of electric force
GB577719A (en) * 1944-04-22 1946-05-29 British Insulated Cables Ltd Improvements relating to apparatus for heating insulating material by subjecting it to a high frequency field of electric force
GB577720A (en) * 1944-04-22 1946-05-29 British Insulated Cables Ltd Improvements relating to apparatus for heating insulating material by subjecting it to a high frequency field of electric force

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1806846A (en) * 1931-05-26 Vania
US2233176A (en) * 1940-03-28 1941-02-25 Carborundum Co Manufacture of bonded abrasive articles
US2233175A (en) * 1940-03-28 1941-02-25 Carborundum Co Manufacture of abrasive coated articles
GB577474A (en) * 1944-04-22 1946-05-20 British Insulated Cables Ltd Improvements relating to apparatus for heating insulating material by subjecting it to a high frequency field of electric force
GB577719A (en) * 1944-04-22 1946-05-29 British Insulated Cables Ltd Improvements relating to apparatus for heating insulating material by subjecting it to a high frequency field of electric force
GB577720A (en) * 1944-04-22 1946-05-29 British Insulated Cables Ltd Improvements relating to apparatus for heating insulating material by subjecting it to a high frequency field of electric force

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1006096B (en) * 1953-04-22 1957-04-11 Siemens Ag High frequency welding device for plastic foils

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