FR2482898A1 - Ductile wire electrodes for laminating polyolefin film - to produce non:linear or endless welds using induction heating - Google Patents

Ductile wire electrodes for laminating polyolefin film - to produce non:linear or endless welds using induction heating Download PDF

Info

Publication number
FR2482898A1
FR2482898A1 FR8011535A FR8011535A FR2482898A1 FR 2482898 A1 FR2482898 A1 FR 2482898A1 FR 8011535 A FR8011535 A FR 8011535A FR 8011535 A FR8011535 A FR 8011535A FR 2482898 A1 FR2482898 A1 FR 2482898A1
Authority
FR
France
Prior art keywords
electrode assembly
electrode
welding
support
wire
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.)
Granted
Application number
FR8011535A
Other languages
French (fr)
Other versions
FR2482898B1 (en
Inventor
Claude Leger
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.)
DISPOVET
Original Assignee
DISPOVET
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 DISPOVET filed Critical DISPOVET
Priority to FR8011535A priority Critical patent/FR2482898A1/en
Publication of FR2482898A1 publication Critical patent/FR2482898A1/en
Application granted granted Critical
Publication of FR2482898B1 publication Critical patent/FR2482898B1/fr
Granted 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
    • B29C65/18—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
    • B29C65/222—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip comprising at least a single heated 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
    • 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
    • B29C65/228—Heated wire resistive ribbon, resistive band or resistive strip characterised by the means for electrically connecting the ends of said heated wire, resistive ribbon, resistive band or 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
    • B29C65/78—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
    • B29C65/7888—Means for handling of moving sheets or webs
    • B29C65/7891—Means for handling of moving sheets or webs of discontinuously moving sheets or webs
    • 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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/24—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight
    • B29C66/244—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being non-straight, e.g. forming non-closed contours
    • 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
    • B29C66/8145—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
    • 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
    • B29C66/818—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
    • B29C66/8187—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the electrical insulating constructional aspects
    • B29C66/81871—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the electrical insulating constructional aspects of the welding jaws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/824—Actuating mechanisms
    • B29C66/8242—Pneumatic or hydraulic drives
    • 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
    • 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
    • B29C65/38—Impulse heating
    • 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
    • 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
    • B29C65/7441—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 for making welds and cuts of other than simple rectilinear form
    • 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
    • B29C66/80—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
    • B29C66/83—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
    • B29C66/8351—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws
    • B29C66/83511—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws jaws mounted on rollers, cylinders or drums
    • 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
    • B29L2031/48—Wearing apparel
    • B29L2031/4842—Outerwear
    • B29L2031/4864—Gloves

Landscapes

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

Abstract

A wire electrode covered with a non-stick sheath or film is mounted on a rigid panel of non-conductive material using mobile clamps to secure the wire as a profile against which layers of fusible material may be laminated under pressure from an ancillary platen. The wire is maintained at an intermediate temp. by electrical resistance operating at a constant load, and rapidly heated to fusion temps., as required by addition short term inductance heating. Electrode is used esp. for producing non-linear welds in sheets of material which cannot be laminated by high frequency heating techniques, e.g. polyethylene film (16).

Description

La présente invention concerne d'une façon générale le soudage des matières plastiques en feuilles et elle est plus particulièrement relative à une électrode perfectionnée pour le soudage thermique des feuilles de matière thermoplastique
On utilise actuellement pour le soudage des feuilles de matière plastique thermosoudable deux principaux procédés différents , savoir : le soudage par haute fréquence et le soudage sous pression et chaleur au moyen d'électrodes chauffées par un courant électrique, soit de façon continue, soit par impulsions.The present invention relates generally to the welding of plastics in sheets and it relates more particularly to an improved electrode for the thermal welding of sheets of thermoplastic material.
Two main different processes are currently used for welding sheets of heat-sealable plastic, namely: high frequency welding and pressure and heat welding by means of electrodes heated by an electric current, either continuously or by pulses. .

Parmi les différentes matières plastiques thermosoudables, certaines telles que par exemple le polyéthylène ne peuvent pas être soudées au moyen du procédé par haute fréquence, leur soudage ne pouvant être effectué que par le second de ces procédés. Among the various heat-sealable plastics, some such as for example polyethylene cannot be welded by means of the high frequency process, their welding being able to be carried out only by the second of these processes.

Les machines utilisées actuellement pour le soudage thermique des matières plastiques par impulsions utilisent des électrodes présentant une certaine résistivité électrique qui sont maintenues sous tension afin de conserver une température moyenne et dans lesquelles on envoie une impulsion de tension afin de les porter brusquement à la température élevée nécessaire pour assurer le soudage, la température moyenne à laquelle est maintenue l'électrode entre deux opérations-de soudage étant destinée à faciliter la brusque montée en température de l'électrode sans nécessiter une trop grande consommation d'énergie électrique. The machines currently used for the thermal welding of plastics by pulses use electrodes having a certain electrical resistivity which are kept under tension in order to maintain an average temperature and in which a voltage pulse is sent in order to bring them suddenly to the high temperature necessary for welding, the average temperature at which the electrode is maintained between two welding operations being intended to facilitate the sudden rise in temperature of the electrode without requiring too great a consumption of electrical energy.

Lors du passage de l'impulsion de tension la brusque augmentation de température de l'électrode provoque une dilatation importante de celle-ci et cette dila -tation doit être absorbée pour éviter une déformation de l'électrode à chaque opération de soudage. During the passage of the voltage pulse, the sudden increase in temperature of the electrode causes it to expand considerably and this expansion must be absorbed to avoid deformation of the electrode during each welding operation.

En conséquence il n'a été possible d'utiliser jusqu'à présent que des électrodes rectilignes fixées par une extrémité et dont l'autre extrémité est reliée à un dispositif tendeur qui absorbe élastiquement la dilatation de l'électrode dans le sens longitudinal lors du passage de l'impulsion et permet sa rétraction lorsque l'électrode retombe à sa température initiale. Consequently, it has hitherto been possible to use only rectilinear electrodes fixed by one end and the other end of which is connected to a tensioning device which elastically absorbs the expansion of the electrode in the longitudinal direction during the passage of the pulse and allows its retraction when the electrode drops back to its initial temperature.

Il en résulte que ce procédé n'est utilisable que pour la fabrication d'articles formés de feuilles de matière plastique soudées à chaud suivant des lignes de soudage rectilignes. As a result, this method can only be used for the manufacture of articles formed from sheets of plastic material heat-welded along rectilinear welding lines.

Lorsqu'on désire réaliser des objets au moyen de feuilles de matière plastique soudées ensemble et dont la périphérie présente au moins une courbe on doit utiliser le procédé de soudage par haute fréquence dans lequel le chauffage est obtenu par pertes diélectriques dans l'intervalle entre deux électrodes qui ne sont pas en contact, et qui permet d'obtenir une ligne de soudage sinueuse au moyen d'électrodes de forme correspondante sans que ces électrodes se déforment. When it is desired to produce objects by means of sheets of plastic material welded together and whose periphery has at least one curve, the high frequency welding process must be used in which the heating is obtained by dielectric losses in the interval between two electrodes which are not in contact, and which makes it possible to obtain a sinuous welding line by means of electrodes of corresponding shape without these electrodes being deformed.

Il en résulte que le polyéthylène, ne pouvant être soudé par le procédé à haute fréquence, ne peut être utilisé pour la fabrication d'articles constitués d'au moins deux feuilles soudées ensemble suivant une ligne de soudage comportant des courbes, ces articles devant être réalisés en chlorure de polyvinyle soudé par haute fréquence. As a result, polyethylene, which cannot be welded by the high-frequency process, cannot be used for the manufacture of articles made up of at least two sheets welded together along a welding line comprising curves, these articles having to be made of polyvinyl chloride welded by high frequency.

Il serait cependant avantageux dans certains cas de pouvoir fabriquer de tels articles en feuilles de polyéthylene.  It would however be advantageous in certain cases to be able to manufacture such articles from polyethylene sheets.

L'invention a pour but de remédier à cet inconvénient en fournissant une électrode nouvelle et perfectionnée pouvant avoir toute forme comprenant des courbes pour le thermosoudage par impulsions de toutes les matières plastiques thermosoudables en feuilles. The object of the invention is to remedy this drawback by providing a new and improved electrode which may have any shape including curves for the pulse heat sealing of all heat sealable plastics in sheets.

Un autre but de l'invention est de réaliser une telle électrode dont la configuration puisse être facilement et instantanément modifiée sans qu'il soit nécessaire d'utiliser d'outils spéciaux. Another object of the invention is to produce such an electrode, the configuration of which can be easily and instantly modified without the need to use special tools.

L'invention a pour objet à cet effet unensemble d'électrode pour le thermosoudage par impulsions de matières thermoplastiques en feuilles, caractérisé en ce qu'il comprend une plaque plane de support, rigide, non élastique et non conductrice de l'électricité, et un fil de métal de section circulaire conformé de façon à présenter une configuration quelconque non rectiligne, posé sur ladite plaque et maintenu sur celle-ci par des moyens dé retenue déformables et amovibles. The subject of the invention is therefore an electrode assembly for the pulse heat sealing of thermoplastic sheet materials, characterized in that it comprises a flat support plate, rigid, non-elastic and non-conductive of electricity, and a metal wire of circular section shaped so as to have any non-rectilinear configuration, placed on said plate and held thereon by deformable and removable retaining means.

Suivant une autre caractéristique de l'invention les extrémités du fil de métal sont reliées à des organes de contact fixés sur ladite plaque de support et adaptés pour coopérer avec des moyens complémentaires prévus sur le plateau d'une machine à souder
Suivant encore une autre caractéristique de l'invention lesdits moyens de retenue déformables sont constitués par des morceaux de ruban adhésif en un tissu imprégné de teflon et résistant à la température de soudage.According to another characteristic of the invention, the ends of the metal wire are connected to contact members fixed on said support plate and adapted to cooperate with complementary means provided on the plate of a welding machine.
According to yet another characteristic of the invention, said deformable retaining means consist of pieces of adhesive tape made of a fabric impregnated with teflon and resistant to the welding temperature.

De préférence et comme connu en soi l'ensem- ble d'électrodes est recouvert au moyen d'une feuille de tissu imprégnée de teflon résistant à la température de soudage pour empêcher l'adhérence de la soudure sur l'électrode. Preferably and as known per se, the set of electrodes is covered by means of a sheet of fabric impregnated with Teflon resistant to the welding temperature to prevent the adhesion of the weld to the electrode.

D'autres caractéristiques et avantages de l'invention apparaîtront au cours de la description qui va suivre, faite en se référant au dessin annexé donné uniquement à titre d'exemple et dans lequel
- la Fig. 1 est une vue en perspective d'un ensemble d'électrode suivant l'invention pour la fabrication d'articles formés d'une matière thermoplastique en feuilles soudées et prédécoupées qui, suivant l'exemple représenté sont des moufles de protection;
- la Fig. 2 est une vue en coupe suivant la ligne 2-2 de la Fig. 1;
- la Fig. 3 est une vue schématique d'une machine de thermosoudage pour la fabrication d'articles formés de deux feuilles de matière thermoplastique soudées ensemble;
- la Fig. 4 est une vue partielle à plus grande échelle d'une partie du plateau supérieur de la machine représentée à la Fig. 3.Other characteristics and advantages of the invention will emerge during the description which follows, made with reference to the appended drawing given solely by way of example and in which
- Fig. 1 is a perspective view of an electrode assembly according to the invention for the manufacture of articles formed from a thermoplastic material in welded and precut sheets which, according to the example shown, are protective mittens;
- Fig. 2 is a sectional view along line 2-2 of FIG. 1;
- Fig. 3 is a schematic view of a heat-sealing machine for the manufacture of articles formed from two sheets of thermoplastic material welded together;
- Fig. 4 is a partial view on a larger scale of a part of the upper plate of the machine shown in FIG. 3.

En se référant au dessin, l'ensemble d'électrode suivant l'invention comprend une plaque de support 2, plane et rigide, en une matière électriquement isolante et résistante à la température de soudage, par exemple en fibrociment ou toute autre matière analogue et présentant de préférence une surface à peu près lisse. Referring to the drawing, the electrode assembly according to the invention comprises a support plate 2, flat and rigid, made of an electrically insulating material and resistant to the welding temperature, for example in fiber cement or any other similar material and preferably having an approximately smooth surface.

On a tracé sur cette plaque la ligne de soudure qui correspond à l'article que l'on désire réaliser et on dispose sur ce tracé un fil métallique 3 de préférence de section circulaire ayant un diamètre d'environ 1,5 à 2 mm et on le maintient appliqué sur le tracé de la plaque de support 2 au moyen de morceaux 4 d'un ruban adhésif en un tissu imprégnédeteflon et résistant à la chaleur. We have drawn on this plate the weld line that corresponds to the item we want to make and we have on this route a metal wire 3 preferably of circular section having a diameter of about 1.5 to 2 mm and it is kept applied on the trace of the support plate 2 by means of pieces 4 of an adhesive tape made of a fabric impregnated with Teflon and heat resistant.

Ces morceaux de ruban adhésif peuvent être espacés d'environ dix à vingt centimètres et sont disposés transversalement au fil de métal 3. These pieces of adhesive tape can be spaced about ten to twenty centimeters apart and are arranged transversely to the metal wire 3.

De préférence la plaque de support 2 comporte au voisinage de l'un de ses bords latéraux deux trous 5 et des-broches de connexion 6 sont fixées dans les trous 5 et font saillie sur la face inférieure de la plaque 2, les extrémités 7 du fil de métal 3 s'étendant à travers la plaque dans les trous 5 et étant reliées aux broches 6. Preferably, the support plate 2 has, in the vicinity of one of its lateral edges, two holes 5 and connection pins 6 are fixed in the holes 5 and protrude from the underside of the plate 2, the ends 7 of the metal wire 3 extending through the plate into the holes 5 and being connected to the pins 6.

Une feuille 8 d'un tissu imprégné de teflon résistant à la chaleur est disposée par-dessus l'ensemble de la plaque de support 2 et recouvre le fil métallique 3 constituant l'électrode de soudage afin d'empêcher toute adhérence de la matière plastique sur l'électrode. La feuille 8 est de préférence fixée de façon amovible sur deux bords latéraux parallèles opposés de la plaque 2 par rapport aux broches de connexion 6. A sheet 8 of a fabric impregnated with heat-resistant teflon is placed over the assembly of the support plate 2 and covers the metal wire 3 constituting the welding electrode in order to prevent any adhesion of the plastic material. on the electrode. The sheet 8 is preferably removably fixed on two opposite parallel lateral edges of the plate 2 with respect to the connection pins 6.

La Fig. 2 qui est une vue partielle en coupe suivant la ligne 2-2 de la Fig. 1 montre clairement l'agencement du fil de métal constituant l'électrode 3 maintenu sur la plaque de support 2 au moyen des bandes adhésives 4. Fig. 2 which is a partial sectional view along line 2-2 of FIG. 1 clearly shows the arrangement of the metal wire constituting the electrode 3 held on the support plate 2 by means of the adhesive strips 4.

L'ensemble d'électrode décrit ci-dessus peut être facilement adapté sur une machine de thermosoudage du type connu représenté schématiquement à la Fig. 3, comprenant un bâti 9 portant une table 10 sur laquelle on dispose l'ensemble d'électrodes suivant l'invention. The electrode assembly described above can be easily adapted on a heat-sealing machine of the known type shown diagrammatically in FIG. 3, comprising a frame 9 carrying a table 10 on which the set of electrodes according to the invention is placed.

La table 10 peut être facilement modifiée pour recevoir l'ensemble 1 d'électrode en disposant sur sa face inférieure une boite ou douille de connexion 11 adaptée pour recevoir les broches 6 de la plaque de support 2. The table 10 can be easily modified to receive the electrode assembly 1 by arranging on its underside a connection box or socket 11 adapted to receive the pins 6 of the support plate 2.

La machine porte sur une traverse supérieure des vérins pneumatiques 12 dont les tiges portent un plateau supérieur 13 dont la face inférieure est avantageusement revêtue d'une garniture 14 en une matière relativement élastique résistant à la chaleur et qui est ellemême de préférence recouverte d'une feuille 15 d'un tissu imprégné de teflon analogue à la feuille de tissu 8 afin d'éviter toute adhérence de la feuille de matière plastique sur la garniture 14 par sa ligne de soudure. The machine has pneumatic cylinders 12 on an upper cross member, the rods of which carry an upper plate 13, the lower face of which is advantageously coated with a lining 14 made of a relatively elastic material resistant to heat and which is itself preferably covered with a sheet 15 of a fabric impregnated with teflon similar to fabric sheet 8 in order to avoid any adhesion of the plastic sheet on the lining 14 by its weld line.

Un interrupteur de fin de course monté sur l'un des montants du bâti est adapté pour déclencher l'impulsion de courant dans l'électrode 3 lorsque les vérins 12 ont abaissé et appliqué le plateau supérieur sur l'électrode, tandis que deux feuilles superposées 15 de matière plastique thermosoudable se trouvent disposées entre l'ensemble d'électrode et le plateau supérieur 13 avec une pression suffisante pour assurer en conjugaison avec une température appropriée du fil 3 une ligne de soudure sans solution de continuité.A limit switch mounted on one of the uprights of the frame is adapted to trigger the current pulse in the electrode 3 when the jacks 12 have lowered and applied the upper plate to the electrode, while two overlapping sheets 15 of heat-sealable plastic material are placed between the electrode assembly and the upper plate 13 with sufficient pressure to ensure, in conjunction with an appropriate temperature of the wire 3, a weld line without a solution of continuity.

La machine comporte également de façon classique une ou deux bobines d'alimentation 16 disposées sur un côté du bâti et une bobine réceptrice 17 sur le côté opposé du bâti, sur laquelle est enroulée la bande de ma tolère plastique dans laquelle sont formées et prédécoupées par le soudage les empreintes correspondant à la configuration de l'électrode 3. Cette bobine réceptrice 17 est entraînée par un moteur pas à pas qui fait avancer les feuilles de matière plastique de la distance voulue pour chaque opération de soudage effectuée à chaque application du plateau sur l'ensemble d'électrode. The machine also conventionally comprises one or two supply coils 16 arranged on one side of the frame and a take-up reel 17 on the opposite side of the frame, on which is wound the strip of my plastic tolerant in which are formed and precut by welding the fingerprints corresponding to the configuration of the electrode 3. This take-up reel 17 is driven by a stepping motor which advances the plastic sheets by the desired distance for each welding operation carried out each time the plate is applied to the electrode assembly.

La section circulaire du fil de métal constituant l'électrode 3 agissant en combinaison avec l'élas- ticité relative de la garniture 14 du plateau supérieur 13 assure sous une faible pression de l'ordre de 0,6
kg l'obtention d'une ligne de soudure continue ainsi qu'un amincissement de la matière suivant la ligne de soudure réalisant ainsi un prédécoupage des articles soudés.The circular section of the metal wire constituting the electrode 3 acting in combination with the relative elasticity of the lining 14 of the upper plate 13 ensures under a low pressure of the order of 0.6
kg obtaining a continuous weld line as well as a thinning of the material along the weld line thus achieving a precut of the welded articles.

lies morceaux de ruban adhésif 4 ne sont en contact qu'avec une surface très réduite du fil 3 de l'électrode, principalement sur sa partie supérieure, un espace vide 18 subsistant de part et d'autre du fil 3, entre la plaque 2 et le ruban 4, comme on le voit à la
Fig. 2. the pieces of adhesive tape 4 are in contact only with a very small surface of the wire 3 of the electrode, mainly on its upper part, an empty space 18 remaining on either side of the wire 3, between the plate 2 and ribbon 4, as seen in
Fig. 2.

En raison d'une part de l'étroitesse de la zone de#contact et de l'affaiblissement de l'adhérence due à la chaleur, le fil 3 peut se déplacer axialement par rapport aux rubans 4, la plus grande dilatation se manifestant dans le sens longitudinal, et les espaces 18 permettent égaleme#nt un déplacement latéral du fil 3 qui reste cependant maintenu appliqué contre la surface de la plaque 2 du fait que la quasi totalité de la surface de chaque ruban 4 adhère solidement a la plaque. On comprend bien entendu que le fil 3 peut reprendre aussi facilement sa position initiale lorsqu'il se rétracte. On the one hand, due to the narrowness of the #contact area and the weakening of the adhesion due to heat, the wire 3 can move axially relative to the tapes 4, the greatest expansion occurring in the longitudinal direction, and the spaces 18 also allow lateral movement of the wire 3 which remains however maintained applied against the surface of the plate 2 because almost the entire surface of each strip 4 adheres securely to the plate. It is understood of course that the wire 3 can return as easily to its initial position when it retracts.

Il est facile dans ces conditions de prévoir en traçant le trajet de l'électrode des dimensions#légère- ment inférieures à celles de l'article fini désiré comte tenu du déplacement possible de l'électrode au moment du passage de l'impulsion. In these conditions, it is easy to predict by tracing the path of the electrode of the dimensions slightly smaller than those of the desired finished article, taking into account the possible displacement of the electrode at the moment of the passage of the pulse.

On comprend également que le mode de fixation du fil de métal 3 par les bandes adhésives 4 permet une modification simple et rapide du tracé du trajet de l'électrode en décollant les bandes, en modifiant la configuration du fil de métal et en recollant ensuite les bandes 4 pour maintenir le fil suivant la nouvelle forme donnée. It is also understood that the method of fixing the metal wire 3 by the adhesive strips 4 allows a simple and rapid modification of the layout of the path of the electrode by peeling off the strips, by modifying the configuration of the metal wire and then gluing the bands 4 to maintain the wire according to the new given shape.

On peut donc soit changer ltensemble de la table de la machine lorsqu'une série d'articles est terminée soit utiliser le même ensemble avec le même fil 3 pour réaliser un article de forme totalement différente. We can therefore either change the entire machine table when a series of articles is finished or use the same set with the same wire 3 to produce an article of a completely different shape.

On remarquera enfin que bien que l'invention ait été décrite en référence à un support plan, destiné à être utilisé sur une machine de thermosoudage à plat, elle peut également être appliquée à un support non plan, par exemple cylindrique, tel qu'un tambour rotatif sur la surface duquel est agencé le fil et tournant en contact avec un cylindre antagoniste ayant une surface élastique analogue à celle du plateau 13.  Finally, it will be noted that although the invention has been described with reference to a flat support, intended to be used on a flat heat sealing machine, it can also be applied to a non-planar support, for example cylindrical, such as a rotary drum on the surface of which the wire is arranged and rotating in contact with an opposing cylinder having an elastic surface similar to that of the plate 13.

Claims (8)

REVENDICATIONS 1 - Ensemble d'électrode pour le thermosoudage par impulsions de matières thermoplastiques en feuilles, caractérisé en ce qu'il comprend un support rigide (2) non élastique et non conducteur de l'électricité et un fil de métal (3) agencé sur la surface dudit support (2) de façon à présenter une configuration quelconque non rectiligne et maintenu en place sur ledit support par des moyens de retenue (4) déformables et amovibles. 1 - electrode assembly for the pulse heat sealing of thermoplastic sheet materials, characterized in that it comprises a rigid support (2) which is non-elastic and non-conductive of electricity and a metal wire (3) arranged on the surface of said support (2) so as to have any non-rectilinear configuration and held in place on said support by deformable and removable retaining means (4). 2 - Ensemble d'électrode suivant la revendication 1, caractérisé en ce que ledit support (2) est une plaque plane, le fil (3)- ayant une section circulaire et étant en un métal déformable ne reprenant pas sa forme par élasticité. 2 - electrode assembly according to claim 1, characterized in that said support (2) is a flat plate, the wire (3) - having a circular section and being of a deformable metal not resuming its shape by elasticity. 3 - Ensemble d'électrode suivant l'une quelconque des revendications 1 et 2, caractérisé en ce que lesdits moyens de retenue déformables et amovibles (4) sont constitués par des morceaux d'un ruban adhésif en un tissu imprégné ou revêtu de teflon et résistant aux températures de soudage. 3 - electrode assembly according to any one of claims 1 and 2, characterized in that said deformable and removable retaining means (4) consist of pieces of adhesive tape made of a fabric impregnated or coated with teflon and resistant to welding temperatures. 4 - Ensemble d'électrode suivant la revendication 2, caractérisé en ce que les extrémités (7) dudit fil de métal (3) sont reliées à des organes de contact (6) fixés sur ladite plaque de support (2) et adaptés pour coopérer avec des moyens complémentaires (11) prévus sur un plateau (10) ou autre organe analogue d'une machine à souder. 4 - electrode assembly according to claim 2, characterized in that the ends (7) of said metal wire (3) are connected to contact members (6) fixed on said support plate (2) and adapted to cooperate with complementary means (11) provided on a plate (10) or other similar member of a welding machine. 5 - Ensemble d'électrode suivant l'une quelconque des revendications 1 à 4, caractérisé en ce qu'il est recouvert d'une feuille (8) d'un tissu imprégné ou recouvert de teflon ou autre matière analogue résistant aux températures de soudage pour empêcher la soudure d'adhérer à I'électrode=(3).  5 - electrode assembly according to any one of claims 1 to 4, characterized in that it is covered with a sheet (8) of a fabric impregnated or covered with teflon or other similar material resistant to welding temperatures to prevent the weld from sticking to the electrode = (3). 6 - Ensemble d'électrode suivant l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend un élément antagoniste (13) ayant une surface revêtue d'une garniture (14) élastique et anti-adhésive et adapte pour appliquer la matière à souder (15) avec pression sur le support (2) de L'électrode. 6 - electrode assembly according to any one of the preceding claims, characterized in that it comprises an antagonistic element (13) having a surface coated with a lining (14) elastic and non-stick and suitable for applying the material to be welded (15) with pressure on the support (2) of the electrode. 7 - Machine pour le thermosoudage de matières thermoplastiques, caractérisée en ce qu'elle comporte un ensemble d'électrode et d'#lément antagoniste tels que définis suivant l'une quelconque des revendications précédentes. 7 - Machine for heat sealing thermoplastic materials, characterized in that it comprises an electrode assembly and # antagonist element as defined according to any one of the preceding claims. 8 - Article constitué de feuilles de matière thermoplastique soudées, ayant une périphérie sinueuse, caractérisé en ce que ladite soudure est réalisée au moyen d'un ensemble d'électrode tel que défini suivant l'une quelconque des revendications 1 à 6.  8 - Article consisting of sheets of welded thermoplastic material, having a sinuous periphery, characterized in that said welding is carried out by means of an electrode assembly as defined according to any one of claims 1 to 6.
FR8011535A 1980-05-23 1980-05-23 Ductile wire electrodes for laminating polyolefin film - to produce non:linear or endless welds using induction heating Granted FR2482898A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8011535A FR2482898A1 (en) 1980-05-23 1980-05-23 Ductile wire electrodes for laminating polyolefin film - to produce non:linear or endless welds using induction heating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8011535A FR2482898A1 (en) 1980-05-23 1980-05-23 Ductile wire electrodes for laminating polyolefin film - to produce non:linear or endless welds using induction heating

Publications (2)

Publication Number Publication Date
FR2482898A1 true FR2482898A1 (en) 1981-11-27
FR2482898B1 FR2482898B1 (en) 1983-02-25

Family

ID=9242276

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8011535A Granted FR2482898A1 (en) 1980-05-23 1980-05-23 Ductile wire electrodes for laminating polyolefin film - to produce non:linear or endless welds using induction heating

Country Status (1)

Country Link
FR (1) FR2482898A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0200726A1 (en) * 1984-11-07 1986-11-12 Robert C French Method and apparatus for thermobonding seams in thermoplastic material.
EP0552407A2 (en) * 1992-01-08 1993-07-28 Viskase Corporation Heat sealing member for making contoured heat seals
WO1998034776A1 (en) * 1997-02-06 1998-08-13 Dupont Canada Inc. Easy-mount sealing element for packaging machines
EP1240995A2 (en) * 2001-03-16 2002-09-18 Wilson Greatbatch Limited Thermo-encapsulating system and method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB906697A (en) * 1958-06-02 1962-09-26 Joseph Caldwell Gerard Method and apparatus for making thin plastic gloves
FR1326937A (en) * 1962-04-09 1963-05-10 Weldotron Corp Electric pulse heat sealer
FR1412429A (en) * 1964-05-11 1965-10-01 Heating device for pulse welding of thermoplastic plastics
AU5378965A (en) * 1965-01-12 1966-07-14 Thermoplastic Industries In. C Apparatus for welding thermoplastic sheets
FR1535248A (en) * 1966-11-16 1968-08-02 Menschner Textil Johannes Method and device for producing a separating weld line
US4053671A (en) * 1973-01-24 1977-10-11 Carlisle Richard S Article having edge-sealed films

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB906697A (en) * 1958-06-02 1962-09-26 Joseph Caldwell Gerard Method and apparatus for making thin plastic gloves
FR1326937A (en) * 1962-04-09 1963-05-10 Weldotron Corp Electric pulse heat sealer
FR1412429A (en) * 1964-05-11 1965-10-01 Heating device for pulse welding of thermoplastic plastics
AU5378965A (en) * 1965-01-12 1966-07-14 Thermoplastic Industries In. C Apparatus for welding thermoplastic sheets
FR1535248A (en) * 1966-11-16 1968-08-02 Menschner Textil Johannes Method and device for producing a separating weld line
US4053671A (en) * 1973-01-24 1977-10-11 Carlisle Richard S Article having edge-sealed films

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0200726A1 (en) * 1984-11-07 1986-11-12 Robert C French Method and apparatus for thermobonding seams in thermoplastic material.
EP0200726A4 (en) * 1984-11-07 1987-09-02 Robert C French Method and apparatus for thermobonding seams in thermoplastic material.
EP0552407A2 (en) * 1992-01-08 1993-07-28 Viskase Corporation Heat sealing member for making contoured heat seals
EP0552407A3 (en) * 1992-01-08 1993-09-15 Viskase Corporation Heat sealing member for making contoured heat seals
WO1998034776A1 (en) * 1997-02-06 1998-08-13 Dupont Canada Inc. Easy-mount sealing element for packaging machines
EP1240995A2 (en) * 2001-03-16 2002-09-18 Wilson Greatbatch Limited Thermo-encapsulating system and method
EP1240995A3 (en) * 2001-03-16 2003-08-27 Wilson Greatbatch Limited Thermo-encapsulating system and method

Also Published As

Publication number Publication date
FR2482898B1 (en) 1983-02-25

Similar Documents

Publication Publication Date Title
EP1340060B1 (en) Method for making thermo-electric converters
FR2532337A1 (en) Article comprising an elastic gathered strip, method and device for its manufacture.
FR2575964A1 (en) DEVICE FOR MANUFACTURING A PAINT ROLLER AND ROLL THUS OBTAINED
FR2557018A1 (en) METHOD FOR MANUFACTURING ELASTIC LAYERS, APPARATUS FOR CARRYING OUT SAID METHOD, AND PRODUCT OBTAINED
CH528989A (en) Improving surface adhesion properties - by rapid frictional motion
EP2459360B1 (en) Method and device for sealing tubular plastic packaging, and resulting packaging
FR2629755A1 (en) METHOD AND APPARATUS FOR CUTTING AND SOLDERING MULTIPLE PLATES OF THERMOPLASTIC MATERIAL HAVING TOUGH SECTIONS
FR2598963A1 (en) DEVICE FOR WELDING A TIP ON A THERMOPLASTIC FILM
FR2482898A1 (en) Ductile wire electrodes for laminating polyolefin film - to produce non:linear or endless welds using induction heating
FR2590202A1 (en) METHOD AND APPARATUS FOR CONTINUOUS WELDING OF SHEET SURFACES, PLATES, BARS AND / OR TUBES OF THERMOPLASTIC SYNTHETIC MATERIAL
FR2526706A1 (en) APPARATUS FOR MANUFACTURING TUBULAR SHEATHES OF PLASTIC MATERIAL FOR APPLICATION TO CONTAINERS
FR2676623A1 (en) Apparatus for joining pieces of fabric in the form of sheets
EP0566338A1 (en) Method for sealing the edge of fluted plastic boards
EP3087020A1 (en) Method for joining together the ends of two hot-melt items in the form of strips or plies, and end-joining module for implementing said method
FR2501104A1 (en) METHOD AND APPARATUS FOR WELDING THERMOPLASTIC MATERIALS
BE1001900A3 (en) Conveyor belts and manufacturing.
EP0249526A1 (en) Machine for coating a flat element by applying and fusing a thermoplastic film
FR2763015A1 (en) PROCESS FOR WELDING THERMOFORMED SHEETS OF PLASTIC MATERIAL AND MACHINE FOR CARRYING OUT SAID METHOD
FR2527587A1 (en) METHOD AND DEVICE FOR SEALING GLASS PANELS
EP0891862A1 (en) Method for producing composite panels and assembly for implementing the method
BE560830A (en)
CA2742646A1 (en) Method and device for making a bag
CH347422A (en) Process for manufacturing plastic bags, machine for carrying out the process and bag or series of bags obtained by this process
CH308338A (en) Process for cutting thermoplastic material, in particular into strips, and apparatus for implementing this process.
FR2711354A1 (en) Device for welding films making it possible to weld according to complex shapes

Legal Events

Date Code Title Description
ST Notification of lapse
ST Notification of lapse