ES2287779T3 - Soldeo de un tubo. - Google Patents

Soldeo de un tubo. Download PDF

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Publication number
ES2287779T3
ES2287779T3 ES04790069T ES04790069T ES2287779T3 ES 2287779 T3 ES2287779 T3 ES 2287779T3 ES 04790069 T ES04790069 T ES 04790069T ES 04790069 T ES04790069 T ES 04790069T ES 2287779 T3 ES2287779 T3 ES 2287779T3
Authority
ES
Spain
Prior art keywords
plastic material
welding
tube
films
jaws
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 - Lifetime
Application number
ES04790069T
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English (en)
Inventor
Poul Sorensen
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.)
3L-LUDVIGSEN AS
3L Ludvigsen AS
Original Assignee
3L-LUDVIGSEN AS
3L Ludvigsen AS
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 3L-LUDVIGSEN AS, 3L Ludvigsen AS filed Critical 3L-LUDVIGSEN AS
Application granted granted Critical
Publication of ES2287779T3 publication Critical patent/ES2287779T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • 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
    • 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
    • B29C65/088—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using several cooperating sonotrodes, i.e. interacting with each other, e.g. for realising the same joint
    • 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
    • B29C65/223—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 comprising several heated wires
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
    • B29C65/342—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding
    • 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
    • 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
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/133—Fin-type joints, the parts to be joined being flexible
    • 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
    • B29C66/242—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 closed, i.e. forming closed contours
    • B29C66/2422—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 closed, i.e. forming closed contours being circular, oval or elliptical
    • B29C66/24221—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 closed, i.e. forming closed contours being circular, oval or elliptical being circular
    • 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
    • B29C66/242—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 closed, i.e. forming closed contours
    • B29C66/2422—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 closed, i.e. forming closed contours being circular, oval or elliptical
    • B29C66/24223—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 closed, i.e. forming closed contours being circular, oval or elliptical being oval
    • 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
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/324—Avoiding burr formation
    • 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
    • B29C66/344—Stretching or tensioning the joint area during joining
    • 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B29C66/5326—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially flat
    • B29C66/53261—Enclosing tubular articles between substantially flat elements
    • B29C66/53262—Enclosing spouts between the walls of bags, e.g. of medical bags
    • 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/63—Internally supporting the article during joining
    • B29C66/632—Internally supporting the article during joining using a fluid
    • 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
    • B29C66/735—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 extensive physical properties of the parts to be joined
    • B29C66/7352—Thickness, e.g. very thin
    • 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
    • B29C66/81431—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 comprising a single cavity, e.g. a groove
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
    • A61J1/05—Containers specially adapted for medical or pharmaceutical purposes for collecting, storing or administering blood, plasma or medical fluids ; Infusion or perfusion containers
    • A61J1/10—Bag-type containers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
    • A61J1/14—Details; Accessories therefor
    • A61J1/1475—Inlet or outlet ports
    • 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
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3472—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint
    • B29C65/3476—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being metallic
    • 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
    • B29C66/345—Progressively making the joint, e.g. starting from the middle
    • B29C66/3452—Making complete joints by combining partial 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
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • 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
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    • B29C66/81423—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave being concave
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    • 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
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    • B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B29K2023/12—PP, i.e. polypropylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/06—PVC, i.e. polyvinylchloride
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7148—Blood bags, medical bags
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
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    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1028—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina by bending, drawing or stretch forming sheet to assume shape of configured lamina while in contact therewith
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1028—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina by bending, drawing or stretch forming sheet to assume shape of configured lamina while in contact therewith
    • Y10T156/103—Encasing or enveloping the configured lamina
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1028—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina by bending, drawing or stretch forming sheet to assume shape of configured lamina while in contact therewith
    • Y10T156/1033—Flexible sheet to cylinder lamina

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

Abstract

Método de soldeo de dos paredes de un recipiente de película de material plástico (1, 2) sobre un tubo de material plástico (3) que tiene una sección transversal sustancialmente circular, en donde el tubo de material plástico (3) se dispone entre dos películas de material plástico dispuestas de forma paralela (1, 2), haciendo que las dos películas de material plástico (1, 2) se extiendan a lo largo de la superficie exterior del tubo de material plástico (3) y se unan a tope entre sí a lo largo de una cara de unión (7) entre dos mordazas de soldeo (5, 6) en una zona (8) adyacente al tubo de material plástico (3), y en donde las películas de material plástico (1, 2) son soldadas por medio de las mordazas de soldeo (5, 6) sobre la cara exterior del tubo de material plástico (3) y soldadas de forma conjunta en la zona (8) adyacente al tubo de material plástico (3), en donde el tubo de material plástico (3) se deforma elásticamente durante el soldeo por medio de una fuerza de compresión aplicadapor las mordazas de soldeo (5, 6) para proporcionar la superficie exterior del tubo de material plástico (3) con dos porciones planas diametralmente opuestas (9) que se extienden cada una de ellas sobre ambos lados de la cara de unión (7) y de un modo sustancialmente perpendicular a la misma, en donde se utilizan dos mordazas de soldeo (5, 6) adaptadas para encerrar el tubo de material plástico (3) y las películas de material plástico (1, 2) cuando aquellas son cerradas, teniendo cada mordaza de soldeo (5, 6), según una vista en sección transversal, una zona de soldeo curvada (11), caracterizado porque, en una vista en sección transversal, cada mordaza de soldeo (5, 6) tiene una porción de soldeo sustancialmente lineal (10) que se extiende de un modo sustancialmente perpendicular a la cara de unión (7) entre la cara de unión (7) y cada extremo de la zona de soldeo curvada (11).

Description

Soldeo de un tubo.
Campo técnico
La invención se refiere a un método de acuerdo con el preámbulo de la reivindicación 1 y a un aparato de acuerdo con el preámbulo de la reivindicación 3.
Las bolsas de drenaje tales como bolsas de orina, bolsas de sangre y similares están constituidas normalmente por dos películas superpuestas de material plástico las cuales son soldadas entre sí a lo largo de su periferia. Para proporcionar en la bolsa un canal de salida es usual soldar un tubo de material plástico entre las dos películas de material plástico para aportar comunicación por vía del tubo entre el interior y el exterior de la bolsa. De este modo, una de las películas de material plástico es soldada sobre una mitad de la periferia del tubo de material plástico y la otra película de material plástico es soldada sobre la otra mitad de la periferia del tubo de material plástico. Las dos películas de material plástico son soldadas entre sí sobre ambos lados del tubo. Sin embargo, opcionalmente, las películas pueden ser soldadas únicamente al tubo en las zonas de transición en cada uno de los lados del tubo, siendo depositadas las películas de forma estanca sobre la periferia del tubo para evitar fugas. Opcionalmente, se puede proporcionar un adhesivo entre las películas y la periferia del tubo.
En la práctica, se ha comprobado que resulta difícil obtener una conexión estanca a los líquidos entre la cara exterior del tubo de material plástico y las películas de material plástico en las dos zonas de transición en donde se juntan la cara exterior del tubo de material plástico y las dos películas de material plástico. Incluso aunque se utilicen dos mordazas de soldeo, cada una de las cuales tiene, según una vista en sección transversal, una configuración semi-circular y de forma conjunta, en posición cerrada, definen una abertura circular correspondiente al diámetro externo del tubo, suelen surgir fugas en las zonas mencionadas.
Estado de la técnica
Por la GB 2193485A ya se conoce el hecho de insertar un manguito de refuerzo en el tubo de material plástico en el punto de soldadura para evitar la deformación del tubo de material plástico durante el soldeo. La US 4.126.167 describe el uso de una disposición de boquilla con partes en forma de cuña en lugar de un tubo de material plástico con una sección transversal circular, extendiéndose dichas partes en forma de cuña entre las paredes de la bolsa para impedir una transición brusca entre las películas de material plástico y la disposición de boquilla. Por la EP 0269419 A1 ya se conoce el hecho de disponer una boquilla sobre la cara exterior del tubo de material plástico y las películas de material plástico para asegurar una junta estanca a los líquidos entre el tubo y la bolsa.
La DE 19752648 C1 describe el pre-calentamiento del tubo de material plástico antes de ser soldado junto con las películas de material plástico para probar la soldadura en las zonas de transición críticas. La misma describe un método de acuerdo con el preámbulo de la reivindicación 1 y un aparato de acuerdo con el preámbulo de la reivindicación 3.
Por la EP 0491380 A2 es conocido el hecho de disponer piezas conformadas de un material conductor del calor alrededor del tubo de material plástico y películas de material plástico durante el proceso de soldeo y separar las piezas conformadas del tubo de material plástico y películas de material plástico únicamente después de enfriarse las zonas soldadas.
La US 4.023.607 describe un método de soldeo de dos películas de material plástico sobre un tubo de material plástico que tiene una sección transversal circular por medio de dos mordazas de soldeo que definen una abertura con una sección transversal no circular.
Descripción de la invención
El objeto de la invención consiste en proporcionar un método nuevo y simple de soldeo de un tubo de material plástico entre dos paredes de un recipiente de película de material plástico, con el fin de obtener una soldadura estanca a los líquidos. De acuerdo con la invención, este objeto se consigue por el método establecido en la introducción de esta descripción y que se caracteriza porque, según una vista en sección transversal, cada mordaza de soldeo tiene una porción de soldeo sustancialmente lineal que se extiende de un modo sustancialmente perpendicular a la cara de unión entre la cara de unión y cada extremo de la zona de soldeo curvada. A través de este simple medio ha sido posible, de manera sorprendente, obtener soldaduras muy fiables en las zonas críticas, en donde en lugar de soldar una de las películas de material plástico de forma conjunta con la otra película de material plástico, aquella es soldada sobre el tubo de plástico.
De acuerdo con una modalidad, la zona de soldeo curvada de las mordazas de soldeo se puede proporcionar con un radio de curvatura que excede ligeramente del diámetro exterior del tubo de material plástico y además presenta unas dimensiones tales que, durante el cierre de las mordazas de soldeo, las porciones del tubo de material plástico son presionadas hacia el exterior contra las porciones de soldeo lineales de las mordazas de soldeo. Como resultado, se obtiene así una conexión de soldeo fiable en las zonas críticas, comprimiéndose adicionalmente las películas de material plástico y el tubo de material plástico durante el soldeo.
La invención se refiere además a un aparato como se ha establecido en la parte introductoria de la descripción. El aparato de acuerdo con la invención se caracteriza porque, según una vista en sección transversal, cada mordaza de soldeo presenta una zona de soldeo curvada y una porción de soldeo sustancialmente lineal que se extiende de un modo sustancialmente perpendicular a la cara de unión de las mordazas de soldeo entre la cara de unión y uno de los extremos de la zona de soldeo curvada.
Incluso aunque normalmente es preferible disponer el tubo de material plástico entre dos paredes del recipiente de película de material plástico de manera que se extiende una costura de sellado entre las dos capas de material plástico en ambos lados del tubo de material plástico, el tubo de material plástico puede también, sin embargo, disponerse en un borde del recipiente, de modo que la misma película de material plástico se extiende en 360º alrededor del tubo de material plástico y de modo que únicamente se extiende una costura de sellado entre las dos capas de película de material plástico en uno de los lados del tubo de material plástico.
De acuerdo con una modalidad, las mordazas de soldeo incluyen cada una de ellas un hilo de resistencia que define la zona de soldeo curvada y la porción o porciones de soldeo lineales, estando adaptados dichos hilos de resistencia para unir entre sí el tubo de material plástico y las películas de material plástico mediante soldeo térmico por impulsos o soldeo térmico constante.
De acuerdo con una modalidad opcional, las mordazas de soldeo están configuradas como mordazas de soldeo ultrasónico o como mordazas de soldeo térmico constante.
Breve descripción de los dibujos
La invención se explicará con mayor detalle a continuación por medio de modalidades preferidas ilustradas en los dibujos, en donde:
La figura 1 es una vista en sección a través de una porción de una bolsa de drenaje en donde un tubo de material plástico está soldado entre dos paredes de la bolsa de película de material plástico.
La figura 2 es una vista esquemática en sección de un aparato para llevar a cabo el método según la invención.
La figura 3 muestra el aparato según la figura 2 durante el soldeo entre sí de dos paredes de la bolsa y un tubo de material plástico.
La figura 4 muestra una segunda modalidad de un aparato para llevar a cabo el método según la invención.
Mejores modos de llevar a cabo la invención
La figura 1 es una vista en sección transversal a través de una porción de una bolsa de drenaje, por ejemplo una bolsa de orina, en donde un tubo de material plástico 3 está soldado entre dos películas de material plástico 1, 2, cada una de las cuales forma una pared de la bolsa y están selladas entre sí a lo largo de la periferia del exterior de la bolsa del tubo de material plástico 3.
En el método según la invención, las películas de material plástico 1, 2 son soldadas a por lo menos una porción de la periferia exterior del tubo de material plástico 3 y unidas en las zonas 8 que se unen a tope con el tubo de material plástico 3. Tradicionalmente, las zonas representadas por el número de referencia 4 en la figura 1 resultan particularmente críticas dado que surgen cavidades triangulares en las mismas, cuando las películas de material plástico 1, 2 se colocan alrededor del tubo de material plástico 3, cuyas cavidades han de ser rellenadas mediante material fundido para evitar fugas. Incluso aunque el soldeo se efectúe cuidadosamente para que no se presenten fugas en los puntos 4, dichas fugas pueden presentarse en una fase posterior. Esto último puede ocurrir, por ejemplo, en el caso de que la bolsa se manipule y se someta a tensión mecánica antes de que la soldadura se haya enfriado lo suficiente o en el caso de que las películas de material plástico sean forzadas en un alto grado, con lo que surgen concentraciones de tensión en los puntos 4, de manera que las películas de material plástico 1, 2 pueden llegar a soltarse del tubo de material plástico 3, surgiendo así fugas.
La figura 2 ilustra un primer aparato para llevar a cabo el método según la invención. El aparato es un aparato de soldeo ultrasónico con dos mordazas de soldeo 5, 6 que se unen a tope entre sí en una cara de unión 7 en el estado cerrado ilustrado. En una vista en sección transversal, cada mordaza de soldeo 5, 6 tiene una zona curvada 11 y dos porciones sustancialmente lineales 10 que se extienden entre los extremos de la zona curvada 11 y la cara de unión 7. Las zonas curvadas 11 corresponden sustancialmente a la periferia del tubo de material plástico 3, que ha de ser soldado junto con las películas de material plástico 1, 2. Sin embargo, las zonas curvadas pueden tener un radio de curvatura que excede ligeramente de aquel del tubo de material plástico 3 por motivos que se explicarán a continuación con mayor detalle.
La figura 3 ilustra el aparato mostrado en la figura 2 durante un proceso de soldeo, en donde un tubo de material plástico 3 es soldado junto con dos películas de material plástico 1, 2 y en donde las películas de material plástico 1, 2 son soldadas entre sí en la zona situada en el exterior del tubo de material plástico 3. Como puede apreciarse en la figura 3, el tubo de material plástico 3 se deforma cuando queda encerrado por las mordazas de soldeo 5, 6, con lo que el tubo de material plástico 3 se proporciona con dos porciones planas 9 que se extienden en una corta distancia en cada lado de la cara de unión 7 y perpendicularmente a la misma. Cuando las mordazas de soldeo 5, 6 son cerradas alrededor del tubo de material plástico 3 y películas de material plástico 1, 2, como se ilustra en la figura 3, el material plástico es sometido a ondas de presión por vía de las mordazas de soldeo 5, 6, de manera que se presenta un calentamiento en las uniones entre las películas de material plástico 1, 2 y el tubo de material plástico 3 y entre las dos películas de material plástico 1, 2, con lo cual se obtiene así una soldadura. Sin embargo, las mordazas de soldeo 5, 6 mostradas en las figuras 2 y 3 pueden estar configuradas también como mordazas de soldeo que sueldan con calor constante.
Mediante la deformación mostrada en la figura 3 del tubo de material plástico 3 con dos porciones planas 9 que se extienden de un modo sustancialmente perpendicular a la cara de unión 7, se obtiene, de manera sorprendente, una unión extremadamente estanca y fiable en las zonas críticas 4.
Después del soldeo, el tubo de material plástico 3 adopta su configuración circular original.
Como se ha mencionado anteriormente, las zonas curvadas 11 de las mordazas de soldeo pueden estar configuradas como arcos circulares con un radio ligeramente más grande que el radio exterior del tubo de material plástico 3. Se obtiene así una ligera compresión que proporciona una carga hacia el exterior sobre las porciones 9 del tubo de material plástico 3 situadas cerca de la cara de unión 7, lo cual a su vez asegura y mejora la soldadura en las zonas críticas 4.
La figura 4 ilustra una modalidad alternativa de un aparato según la invención. Por medio del aparato mostrado en la figura 4, las películas de material plástico 1, 2 son soldadas sobre la cara exterior del tubo de material plástico 3 mediante soldeo térmico por impulsos o soldeo térmico constante, comprendiendo cada una de las mordazas de soldeo 5, 6 un hilo de resistencia.
Los detalles ilustrados en las figuras son esquemáticos y han sido exageradas ciertas geometrías para exponer más claramente los principios de la invención. En la práctica, la sección transversal interior de las mordazas de soldeo 5, 6 de las figuras 2-4 presentan una configuración más "aplanada" para ejercer una fuerza ascendente y descendente sobre el tubo de material plástico, cuya fuerza presiona la superficie del tubo de material plástico 3 contra las porciones de soldeo lineales 10 de las mordazas de soldeo 5, 6.
El método y aparato según la invención hacen posible efectuar un soldeo completo entre las películas de material plástico 1, 2 y el tubo de material plástico 3 y entre las películas de material plástico 1, 2 en las zonas 8 que se unen a tope con el tubo de material plástico 3. En la práctica, sin embargo, es conveniente efectuar un soldeo previo, en donde las películas de material plástico se adhieren entre sí y al tubo de material plástico 3 para facilitar la manipulación del mismo antes del soldeo final.
Con el fin de no deteriorar las soldaduras previstas, el material plástico deberá dejarse enfriar antes de someterse a tensiones mecánicas.
También es posible extender una sola película de material plástico en 360º alrededor del tubo de material plástico y soldarla sobre sí misma. Como resultado, se obtiene una bolsa con el tubo de salida en una esquina. Se pueden emplear varios materiales plásticos para el tubo de material plástico 3 y películas de material plástico 1, 2, por ejemplo, PVC, polietileno o polipropileno.
Como película de material plástico, habitualmente se emplea PVC de un grosor de 0,1-0,3 mm. El tubo de material plástico 3 puede producirse normalmente a partir de PVC y tiene un diámetro exterior de 6-20 mm y un grosor de pared de 0,5-1 mm.

Claims (6)

1. Método de soldeo de dos paredes de un recipiente de película de material plástico (1, 2) sobre un tubo de material plástico (3) que tiene una sección transversal sustancialmente circular, en donde el tubo de material plástico (3) se dispone entre dos películas de material plástico dispuestas de forma paralela (1, 2), haciendo que las dos películas de material plástico (1, 2) se extiendan a lo largo de la superficie exterior del tubo de material plástico (3) y se unan a tope entre sí a lo largo de una cara de unión (7) entre dos mordazas de soldeo (5, 6) en una zona (8) adyacente al tubo de material plástico (3), y en donde las películas de material plástico (1, 2) son soldadas por medio de las mordazas de soldeo (5, 6) sobre la cara exterior del tubo de material plástico (3) y soldadas de forma conjunta en la zona (8) adyacente al tubo de material plástico (3), en donde el tubo de material plástico (3) se deforma elásticamente durante el soldeo por medio de una fuerza de compresión aplicada por las mordazas de soldeo (5, 6) para proporcionar la superficie exterior del tubo de material plástico (3) con dos porciones planas diametralmente opuestas (9) que se extienden cada una de ellas sobre ambos lados de la cara de unión (7) y de un modo sustancialmente perpendicular a la misma, en donde se utilizan dos mordazas de soldeo (5, 6) adaptadas para encerrar el tubo de material plástico (3) y las películas de material plástico (1, 2) cuando aquellas son cerradas, teniendo cada mordaza de soldeo (5, 6), según una vista en sección transversal, una zona de soldeo curvada (11), caracterizado porque, en una vista en sección transversal, cada mordaza de soldeo (5, 6) tiene una porción de soldeo sustancialmente lineal (10) que se extiende de un modo sustancialmente perpendicular a la cara de unión (7) entre la cara de unión (7) y cada extremo de la zona de soldeo curvada (11).
2. Método según la reivindicación 1, caracterizado porque la zona de soldeo curvada (11) de las mordazas de soldeo (5, 6) presenta un radio de curvatura que excede ligeramente del diámetro exterior del tubo de material plástico (3), estando además dimensionada para permitir que las porciones (9) del tubo de material plástico (3) sean presionadas hacia el exterior contra las porciones de soldeo lineales (10) de las mordazas de soldeo (5, 6) durante el cierre de las mordazas de soldeo (5, 6).
3. Aparato para soldar dos paredes de un recipiente de película de material plástico (1, 2) sobre un tubo de material plástico (3) que tiene una sección transversal sustancialmente circular, incluyendo dicho aparato dos mordazas de soldeo (5, 6) adaptadas para cerrarse alrededor del tubo de material plástico (3) y películas de material plástico (1, 2), con lo que se hace que las dos películas de material plástico (1, 2) se unan a tope entre sí a lo largo de una cara de unión (7) de las mordazas de soldeo (5, 6) en una zona (8) adyacente al tubo de material plástico (3), y en donde las mordazas de soldeo (5, 6) están adaptadas para soldar las películas de material plástico (1, 2) a la superficie exterior del tubo de material plástico (3) y para soldar entre sí las películas de material plástico (1, 2) en la zona (8) adyacente al tubo de material plástico (3), en donde, según una vista en sección transversal, cada mordaza de soldeo (5, 6) tiene una zona de soldeo curvada (11), caracterizado porque, en una vista en sección transversal, cada mordaza de soldeo (5, 6) tiene una porción de soldeo sustancialmente lineal (10) que se extiende de un modo sustancialmente perpendicular a la cara de unión (7) de las mordazas de soldeo (5, 6) entre la cara de unión (7) y un extremo de la zona de soldeo curvada (11).
4. Aparato según la reivindicación 3, caracterizado porque cada mordaza de soldeo (5, 6) tiene una porción de soldeo sustancialmente lineal (10) entre cada extremo de la zona de soldeo curvada (11) y la cara de unión (7).
5. Aparato según la reivindicación 3 o 4, caracterizado porque las mordazas de soldeo (5, 6) comprenden cada una de ellas un hilo de resistencia (12) que define la zona de soldeo curvada (11) y la porción o porciones de soldeo lineales (10), estando adaptado dicho hilo de resistencia (12) para soldar entre sí el tubo de material plástico (3) y las películas de material plástico (1, 2) con un soldeo térmico por impulsos o soldeo térmico constante.
6. Aparato según la reivindicación 3 o 4, caracterizado porque las mordazas de soldeo (5, 6) están configuradas como mordazas de soldeo ultrasónico o mordazas de soldeo térmico constante.
ES04790069T 2003-10-30 2004-10-29 Soldeo de un tubo. Expired - Lifetime ES2287779T3 (es)

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Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007253177A (ja) * 2006-03-22 2007-10-04 Denso Corp 超音波接合方法、超音波接合装置および超音波接合された接合管
EP2331184B1 (en) * 2008-09-05 2016-12-14 Cardiopolymers, Inc Apparatus for capsule formation in tissue
ES2362070B1 (es) * 2008-11-18 2012-07-24 Volpak, S.A.U "procedimiento y mordaza para el sellado por termosoldadura de los bordes extremos de dos paredes de laterales de un envase contenedor flexible a un cuerpo de soporte de una espita"
JP5537823B2 (ja) * 2009-03-24 2014-07-02 株式会社細川洋行 フィルムバッグの製造方法
EP2263860A1 (en) 2009-06-17 2010-12-22 3L-Ludvigsen A/S Ultrasonic sealing jaw and method for ultrasonic sealing
DE102011004629A1 (de) * 2011-02-24 2012-08-30 Robert Bosch Gmbh Wischblatt zum Reinigen von Scheiben insbesondere von Kraftfahrzeugen
US9267011B2 (en) 2012-03-20 2016-02-23 Frito-Lay North America, Inc. Composition and method for making a cavitated bio-based film
BR112014029751A2 (pt) 2012-06-23 2017-06-27 Frito Lay North America Inc deposição de revestimentos de óxidos inorgânicos ultrafinos em empacotamento
US9090021B2 (en) 2012-08-02 2015-07-28 Frito-Lay North America, Inc. Ultrasonic sealing of packages
US9149980B2 (en) * 2012-08-02 2015-10-06 Frito-Lay North America, Inc. Ultrasonic sealing of packages
CN103950195B (zh) * 2014-04-21 2016-02-24 四川科伦药业股份有限公司 一种输液袋软管与膜材的焊接方法及该方法制备的输液袋
TWI688524B (zh) 2015-03-17 2020-03-21 美商陶氏全球科技有限責任公司 用於撓性容器之撓性配件
CN108697575A (zh) * 2016-02-25 2018-10-23 泰尔茂株式会社 医疗用袋单元及其制造方法
CN108372670A (zh) * 2018-02-09 2018-08-07 佛山市顺德区瑞良塑料制品有限公司 一种塑料瓶子的生产方法及生产装置
AU2019348469B2 (en) * 2018-09-25 2025-03-27 Fresenius Kabi Deutschland Gmbh Contour-forming welding tool for pulse welding and contour-forming pulse welding method for a medical pack formed as a bag

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1479663A (en) * 1974-06-07 1977-07-13 Automaticon As Bag especially urine bag and the method for the production thereof
US4126167A (en) * 1976-12-06 1978-11-21 Patient Care Products, Inc. Gastric tube drainage bag
GB8619492D0 (en) 1986-08-09 1986-09-17 Smiths Industries Plc Medico-surgical bag assemblies
ES2020281B3 (es) 1986-11-28 1991-08-01 Squibb & Sons Inc Fabricacion de bolsas.
US5300162A (en) * 1990-11-29 1994-04-05 Hoechst Aktiengesellschaft Process for the production of an optical coupler for polymeric optical fibers
DE4040687C1 (es) * 1990-12-19 1992-05-27 Paul Kiefel Hochfrequenz-Anlagen Gmbh, 8228 Freilassing, De
JP3759749B2 (ja) * 1994-05-17 2006-03-29 セルパック・アーゲー バックを製造するための方法、装置および前成型器。
ATE218433T1 (de) * 1996-07-03 2002-06-15 Baxter Int Verfahren zum einschweissen eines rohrförmigen einsatzes in einen behälter
DE19752648C1 (de) 1997-11-27 1999-03-18 Kiefel Gmbh Paul Verfahren zum Einschweißen eines Anschlußelements
SE513561C2 (sv) * 1998-02-17 2000-10-02 Eco Lean Ab Behållare, sätt och anordning för att framställa en behållare samt sätt och anordning för att fylla en behållare
AU764318B2 (en) 1999-01-22 2003-08-14 Baxter International Inc. Method of sealing a tube in a container

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DE602004007026T2 (de) 2008-02-14
ATE364492T1 (de) 2007-07-15
WO2005042232A1 (en) 2005-05-12
CN100491109C (zh) 2009-05-27
DE602004007026D1 (de) 2007-07-26
US7344616B2 (en) 2008-03-18
DK200301608A (da) 2005-05-01
DK1677966T3 (da) 2007-10-15
US20070023123A1 (en) 2007-02-01
CN1874882A (zh) 2006-12-06
EP1677966A1 (en) 2006-07-12

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