CH637893A5 - Verfahren zur herstellung eines behaelters. - Google Patents

Verfahren zur herstellung eines behaelters. Download PDF

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Publication number
CH637893A5
CH637893A5 CH414679A CH414679A CH637893A5 CH 637893 A5 CH637893 A5 CH 637893A5 CH 414679 A CH414679 A CH 414679A CH 414679 A CH414679 A CH 414679A CH 637893 A5 CH637893 A5 CH 637893A5
Authority
CH
Switzerland
Prior art keywords
flanges
container
amorphous polyester
hollow body
blank
Prior art date
Application number
CH414679A
Other languages
English (en)
Inventor
Peter Petersen Hoj
Erling Ingvar Nilsson
Original Assignee
Tetra Pak Dev
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 Tetra Pak Dev filed Critical Tetra Pak Dev
Priority to CH414679A priority Critical patent/CH637893A5/de
Priority to EP80200377A priority patent/EP0019316A1/de
Priority to JP5802380A priority patent/JPS5613124A/ja
Priority to AU58031/80A priority patent/AU530759B2/en
Publication of CH637893A5 publication Critical patent/CH637893A5/de

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
    • 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
    • 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
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • 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
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • B29C66/1312—Single flange to flange joints, the parts to be joined being rigid
    • 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
    • B29C66/50—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
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5344—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially annular, i.e. of finite length, e.g. joining flanges to tube ends
    • 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
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5346—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat
    • B29C66/53461—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat joining substantially flat covers and/or substantially flat bottoms to open ends of container bodies
    • 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
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/542—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining hollow covers or hollow bottoms to open ends of container bodies
    • 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
    • B29C66/72—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 structure of the material of the parts to be joined
    • B29C66/723—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 structure of the material of the parts to be joined being multi-layered
    • 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
    • B29C66/731—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 intensive physical properties of the material of the parts to be joined
    • B29C66/7311—Thermal properties
    • B29C66/73111—Thermal expansion coefficient
    • 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
    • B29C66/737—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 state of the material of the parts to be joined
    • B29C66/7371—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 state of the material of the parts to be joined oriented or heat-shrinkable
    • 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
    • B29C66/737—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 state of the material of the parts to be joined
    • B29C66/7371—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 state of the material of the parts to be joined oriented or heat-shrinkable
    • B29C66/73711—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 state of the material of the parts to be joined oriented or heat-shrinkable oriented
    • 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
    • B29C66/737—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 state of the material of the parts to be joined
    • B29C66/7377—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 state of the material of the parts to be joined amorphous, semi-crystalline or crystalline
    • B29C66/73771—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 state of the material of the parts to be joined amorphous, semi-crystalline or crystalline the to-be-joined area of at least one of the parts to be joined being amorphous
    • B29C66/73772—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 state of the material of the parts to be joined amorphous, semi-crystalline or crystalline the to-be-joined area of at least one of the parts to be joined being amorphous the to-be-joined areas of both parts to be joined being amorphous
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • 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
    • 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
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
    • 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
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0039—Amorphous
    • 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
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/005—Oriented
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)

Description

Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung eines Behälters aus Rohlingen aus amorphem Polyester oder einem Schichtstoff, der Schichten aus amorphem Polyester enthält, wobei die Rohlinge zu Hohlkörpern geformt und im Bereich angeformter Flanschen miteinander verschweisst bzw. versiegelt werden.
Bei der Herstellung von Behältern für Flüssigkeiten, insbesondere für unter Druck stehende Flüssigkeiten wie Bier, Erfrischungsgetränke etc., können die Behälter bekanntlich aus zwei im Tiefziehverfahren hergestellten Hohlkörpern erstellt werden, wobei jeder Hohlkörper im Öffnungsbereich einen Ringflansch aufweist. Die beiden Hohlkörper, welche den Behälter bilden, werden längs der aufeinandergelegten Flansche miteinander verbunden, indem sie oberflächlich miteinander verschweisst bzw. verschmolzen werden. Diese bekannten Behälter bestehen vorzugsweise aus napfförmigen Hälften, wobei eine Behälterhälfte eine Füll- und Entleerungsöffnung aufweist, die mit einer entsprechenden Kappe versehen ist, während die gegenüberliegende Hälfte von einem starren Gehäuse umgeben ist, das die zweifache Funktion ausübt, den vom Behälterinhalt ausgeübten Druck aufzunehmen und ferner als Abstützfläche für den Behälter zu dienen.
Bisher hat man für die Herstellung von Behältern dieser Art Polyvinylchlorid oder Acrylnitril verwendet, das unter dem Namen Barex auf dem Markt ist. Diese Kunststoffmaterialien können Zugbeanspruchungen nur in sehr geringem Masse aufnehmen, so dass das Material einerseits relativ dick sein musste, und andererseits durch das Aussgenhäuse abgestützt wurde. Es ist bekannt, dass orientiertes Polyestermaterial eine sehr gute Zugfestigkeit aufweist, so dass sich dieses Material sehr gut für die Herstellung von Behältern für kohlensäurehaltige Getränke eignet. Es ist ferner bekannt, dass man im Blasformverfahren Flaschen aus Polyester herstellen kann, wobei das Blasformverfahren bei einer derartigen Temperatur durchgeführt wird, dass im Material eine Molekülorientierung stattfindet. Polyestermaterial kann in Form einer Folie hergestellt werden, indem man das Material durch einen Schlitz oder eine ringförmige Matrize extrudiert, wobei das praktisch amorphe Material sehr gut verschweisst und verschmolzen werden kann. Leider gehen diese Verschweiss-eigenschaften verloren, wenn das Material molekülorientiert wird, da das Material dann kristallisiert. Es hat sich daher als schwierig erwiesen, zunächst tiefgezogene Hohlkörper aus Polyester herzustellen und anschliessend diese Hohlkörper miteinander zu verbinden, da das Material während dem Formvorgang kristallisiert und dann sehr schlechte Schweis-seigenschaften besitzt.
Da der Tiefziehvorgang viel schneller vorsieh geht, als das Blasformverfahren, können die Behälter rascher und billiger hergestellt werden, indem zwei Behälterhälften tiefgezogen und dann durch die beschriebene Methode miteinander verbunden werden. Dieses Verfahren war jedoch bis jetzt für Polyestermaterial nicht zugänglich, da die Behälterhälften kristallisieren und ihre Schweisseigenschaften im Zusammenhang mit der Streckoperation, bei welcher eine Molekülorientierung stattfindet, verlieren.
Es ist die Aufgabe der vorliegenden Erfindung, dieses technische Problem zu lösen. Das erfindungsgemässe Verfahren ist im Patentanspruch 1 definiert. Bevorzugte Varianten dieses Verfahrens ergeben sich aus den abhängigen Ansprüchen.
Nachstehend wird das erfindungsgemässe Verfahren anhand eines Ausführungsbeispiels unter Bezugnahme auf die beiliegende Zeichnung beschrieben.
Fig. 1 zeigt teils perspektivisch, teils im Schnitt eine kreisförmige Ronde, die längs ihrer Randzone zwischen zwei Kreisringen eingeklemmt ist, die einen Klemmrahmen bilden,
Fig. 2 zeigt, wie die Ronde zu einem Hohlkörper umgeformt wird, wobei deren Randpartie in dem Klemmrahmen eingeklemmt bleibt und
Fig. 3 ist eine Schnittdarstellung eines Behälters, der aus zwei Hohlkörpern besteht, die längs ihrer Ringflansche miteinander verbunden wurden.
Wie bereits erwähnt wurde, erhält das Polyestermaterial nach dem Extrudieren, wobei das geschmolzene Polyester zur Bildung einer Folie durch einen schmalen Schlitz gepresst wird, eine praktisch amorphe Struktur. Eine Ronde 1 eines solchen praktisch amorphen Polyestermaterials, oder auch ein Schichtstoff, welcher derartiges amorphes Polyestermaterial enthält, wird längs ihrer Randzone 5 zwischen zwei Klemmringen 2 eingeklemmt, so dass die Randzone 5 zwischen den Klemmringen 2, welche einen Klemmrahmen bilden, festgehalten wird.
Der von den Klemmringen 2 umschlossene Teil der Ronde 1 wird entweder nach dem Einklemmen oder unmittelbar davor beheizt, worauf dieser Teil gemäss Fig. 2 gestreckt bzw. gezogen wird, bis der napfförmige Hohlkörper 3 entsteht.
Der Zieh- oder Streckvorgang kann mit Hilfe eines Druckmediums oder unter Vakuum erfolgen, und es kann sogar ein mechanisch wirkender Stempel dazu verwendet werden. Vorzugsweise wird der Ziehvorgang in einer äusseren Form 4 vorgenommen, so dass das gestreckte bzw. gezogene Material an der Innenfläche der äusseren Form 4 anliegt und in dieser Form erstarrt.
Wenn der Ziehvorgang bei einer zweckentsprechenden Temperatur vorgenommen wird, d.h. einer Temperatur, welche über dem Erweichungspunkt des Materials, jedoch unterhalb dem Schmelzpunkt liegt, so können (je nach Temperatur) verschiedene Grade molekularer Orientierung erzielt werden. Dank der Molekülorientierung erhält das Material eine gute Zugfestigkeit, selbst wenn die Wand des Hohlkörpers bei der Ziehoperation sehr dünn ausgezogen wird. Ausserdem findet im Material im Zusammenhang mit der Molekülorientierung eine Kristallbildung statt, so dass das
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ursprünglich amorphe Polyestermaterial kristalliner wird.
Der auf diese Weise gebildete Hohlkörper 3 wird der Form 4 entnommen, indem die beiden Ringe 2 voneinander getrennt werden und der Hohlkörper 3 aus der Form 4 herausgezogen wird. Da der eingeklemmte Ringabschnitt 5 der Ronde 1 dem Streck- bzw. Ziehvorgang nicht unterzogen wurde, behielt das Polyestermaterial in der Klemmzone seine amorphe Struktur und ist hier ausserdem dicker.
Gemäss Fig. 3 kann der auf diese Weise gebildete Hohlkörper 3 mit einem Deckel aus amorphem Polyestermaterial versehen oder mit einem ähnlichen, ebenfalls tiefgezogenen Hohlkörper 6 verbunden werden, der ebenfalls einen Ringflansch 7 aus amorphem Polyestermaterial besitzt. Der Hohlkörper 6 kann eine Ausgussöffnung 8 aufweisen, die in bekannter Weise mit einer Kappe versehen sein kann.
Die aufeinanderliegenden Flanschen 5 und 7 der beiden Hohlkörper 3 und 6, die aus amorphem Polyestermaterial bestehen, werden durch Wärmezufuhr miteinander verschweisst und gleichzeitig zusammengepresst, so dass sich eine dichte und dauerhafte Verbindung ergibt. Die für den Verschweissvorgang erforderliche Wärme kann beispielsweise durch ein elektromagnetisches hochfrequentes Feld zugeführt werden, das auf die beiden Flanschen 5 und 7 einwirkt.
Der aus den beiden Hohlkörpern 3 und 6 gebildete Behälter sollte vorzugsweise mit einem gewölbten Boden 12
versehen sein, wie dies Fig. 3 zeigt; wenn der Innendruck des Behälters nicht zu gross ist, kann der Behälter jedoch auch mit einer nach innen ragenden Einbuchtung 10 versehen sein, die das Abstellen des Behälters auf einer ebenen Unterlage 5 gestattet. Will man dagegen den gewölbten Boden 12 beibehalten, so kann der Behälter mit einer aufgepressten oder aufgeleimten ringförmigen Stütze 9 versehen sein.
Die tiefgezogenen Hohlkörper bzw. Behälterhälften können, wie der Behälter selbst, im Rahmen der vorliegenden 10 Erfindung verschiedene Formen und Abmessungen aufweisen. In jedem Falle wird der zentrale Teil der Polyester-ronde unter Zugeinwirkung deformiert und einer Molekülorientierung unterworfen, während gleichzeitig ein Ringflansch, der mit dem geformten Hohlkörper ein einziges Teil 15 bildet, dieser Zugverformung nicht unterworfen wird und deshalb seine amorphe Struktur beibehält. Dieser ringförmige Teil aus amorphem Polyestermaterial wird zwecks Zusammenfügung zweier Hohlkörper bzw. eines Hohlkörpers und eines Deckelteils mit einem ähnlichen ringförmigen 20 Flansch aus amorphem Polyestermaterial verbunden.
Dank dem beschriebenen Verfahren ist es möglich, die hervorragenden Zugfestigkeitseigenschaften des molekülorientierten Polyestermaterials in einfacher Weise auszunutzen, 25 während gleichzeitig geformte Behälterteile wirksam und dauerhaft miteinander verbunden werden können.
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Claims (3)

637893
1. Verfahren zur Herstellung eines Behälters aus Rohlingen aus amorphem Polyester oder einem Schichtstoff, der Schichten aus amorphem Polyester enthält, wobei die Rohlinge zu Hohlkörpern geformt und im Bereich angeformter Flanschen miteinander verschweisst bzw. versiegelt werden, dadurch gekennzeichnet, dass ein Rohling (1) vor dem Umformvorgang in einen Klemmrahmen (2) längs einer Randzone (5) eingespannt wird, die den genannten Flanschen entspricht, und dass innerhalb des Klemmrahmens (2) liegende Teile des Rohlings unter gleichzeitiger Molekül orientierung und Kristallbildung zu dem Hohlkörper (3) umgeformt werden, worauf ein derartiger Hohlkörper (3) mit einem Deckel (6) verschweisst wird, indem der aus praktisch amorphem Polyester bestehende Bereich der Flansche (5,7) gleichzeitig beheizt und zusammengepresst wird.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Flansche (5,7) ringförmig sind.
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PATENTANSPRÜCHE
3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Umformung bei einer Temperatur ausgeführt wird, die unter dem Schmelzpunkt des Polyesters liegt, wobei der im Klemmrahmen (2) eingespannte Teil (5) des Rohlings nicht gestreckt und damit auch nicht zur Kristallbildung gebracht wird.
CH414679A 1979-05-03 1979-05-03 Verfahren zur herstellung eines behaelters. CH637893A5 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CH414679A CH637893A5 (de) 1979-05-03 1979-05-03 Verfahren zur herstellung eines behaelters.
EP80200377A EP0019316A1 (de) 1979-05-03 1980-04-25 Verfahren zur Herstellung von Behältern durch Tiefziehen von Hohlteilen von Platten aus amorphem Polyestermaterial
JP5802380A JPS5613124A (en) 1979-05-03 1980-05-02 Manufacture of vessel by deeppsqeezing
AU58031/80A AU530759B2 (en) 1979-05-03 1980-05-02 Deep drawn polyester containers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH414679A CH637893A5 (de) 1979-05-03 1979-05-03 Verfahren zur herstellung eines behaelters.

Publications (1)

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CH637893A5 true CH637893A5 (de) 1983-08-31

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CH414679A CH637893A5 (de) 1979-05-03 1979-05-03 Verfahren zur herstellung eines behaelters.

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JP (1) JPS5613124A (de)
AU (1) AU530759B2 (de)
CH (1) CH637893A5 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58128810A (ja) * 1982-01-28 1983-08-01 Mitsubishi Rayon Co Ltd 耐衝撃性に優れたポリエステル製深絞り成形容器の製造方法
DE3347681A1 (de) * 1983-01-06 1984-07-12 Cosden Technology, Inc., Wilmington, Del. Verfahren zur herstellung eines behaelters
JPS61115710U (de) * 1984-12-31 1986-07-22

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1130412A (en) * 1965-10-08 1968-10-16 Rausing Anders Ruben Improvements in and relating to the manufacture of containers
FR1478293A (fr) * 1966-05-04 1967-04-21 Illinois Tool Works Objet soudé par la chaleur et son procédé de fabrication
NL6712321A (de) * 1967-09-08 1967-11-27

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AU530759B2 (en) 1983-07-28
JPS5613124A (en) 1981-02-09
EP0019316A1 (de) 1980-11-26
AU5803180A (en) 1980-11-06

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