DE2759138C3 - Verfahren und Vorrichtung zur Herstellung von insbesondere zylinderformigen Behältern - Google Patents

Verfahren und Vorrichtung zur Herstellung von insbesondere zylinderformigen Behältern

Info

Publication number
DE2759138C3
DE2759138C3 DE2759138A DE2759138A DE2759138C3 DE 2759138 C3 DE2759138 C3 DE 2759138C3 DE 2759138 A DE2759138 A DE 2759138A DE 2759138 A DE2759138 A DE 2759138A DE 2759138 C3 DE2759138 C3 DE 2759138C3
Authority
DE
Germany
Prior art keywords
flange
end wall
sleeve
holder
shrunk
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DE2759138A
Other languages
English (en)
Other versions
DE2759138B2 (de
Inventor
Ingemar Wilhelm Malmoe Ohlsson (Schweden)
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.)
Tetra Laval Holdings and Finance SA
Original Assignee
Tetra Pak Developpement SA
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 Developpement SA filed Critical Tetra Pak Developpement SA
Publication of DE2759138B2 publication Critical patent/DE2759138B2/de
Application granted granted Critical
Publication of DE2759138C3 publication Critical patent/DE2759138C3/de
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
    • B29B13/023—Half-products, e.g. films, plates
    • B29B13/024—Hollow bodies, e.g. tubes or profiles
    • B29B13/025—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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/02—Bending or folding
    • B29C53/04—Bending or folding of plates or sheets
    • B29C53/043—Bending or folding of plates or sheets using rolls or endless belts
    • 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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/36—Bending and joining, e.g. for making hollow articles
    • B29C53/38—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges
    • B29C53/48—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of indefinite length, i.e. bending a strip progressively
    • B29C53/50—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of indefinite length, i.e. bending a strip progressively using internal forming surfaces, e.g. mandrels
    • 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
    • B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
    • 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
    • B29C61/00—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
    • B29C61/02—Thermal shrinking
    • B29C61/025—Thermal shrinking for the production of hollow or tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C65/10—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one 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
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1429—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface
    • B29C65/1454—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface scanning at least one of the parts to be joined
    • B29C65/1458—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface scanning at least one of the parts to be joined once, i.e. contour welding
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1429—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface
    • B29C65/1464—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface making use of several radiators
    • 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
    • B29C66/11—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
    • B29C66/131—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
    • B29C66/20—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
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/49—Internally supporting the, e.g. tubular, article 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
    • B29C66/534—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
    • B29C66/70—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
    • B29C66/727—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 porous, e.g. foam
    • 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
    • B29C66/7371—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
    • B29C66/73715—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 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B29C66/83413—Roller, cylinder or drum types cooperating rollers, cylinders or drums
    • 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
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/851—Bag or container making machines
    • 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
    • B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • 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
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B29C2793/0063—Cutting longitudinally
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
    • B29C35/045—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using gas or flames
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0019—Combinations of extrusion moulding with other shaping operations combined with shaping by flattening, folding or bending
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • 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
    • B29C66/7232—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 comprising a non-plastics layer
    • B29C66/72327—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 comprising a non-plastics layer consisting of natural products or their composites, not provided for in B29C66/72321 - B29C66/72324
    • B29C66/72328—Paper
    • 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
    • B29K2995/0049—Heat shrinkable
    • 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
    • B29L2023/00—Tubular articles
    • B29L2023/22—Tubes or pipes, i.e. rigid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2105/00—Rigid or semi-rigid containers made by assembling separate sheets, blanks or webs
    • B31B2105/002—Making boxes characterised by the shape of the blanks from which they are formed
    • B31B2105/0022—Making boxes from tubular webs or blanks, e.g. with separate bottoms, including tube or bottom forming operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/26—Folding sheets, blanks or webs
    • B31B50/28—Folding sheets, blanks or webs around mandrels, e.g. for forming bottoms
    • B31B50/30—Folding sheets, blanks or webs around mandrels, e.g. for forming bottoms the mandrels moving
    • B31B50/32—Folding sheets, blanks or webs around mandrels, e.g. for forming bottoms the mandrels moving in circular paths
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/60—Uniting opposed surfaces or edges; Taping
    • B31B50/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure, e.g. by welding
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/71—Processes of shaping by shrinking
    • 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
    • Y10T156/1036—Bending of one piece blank and joining edges to form article
    • Y10T156/1038—Hollow cylinder article

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Toxicology (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Making Paper Articles (AREA)
  • Packages (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Description

45
Die Erfindung bezieht sich auf ein Verfahren und eine Vorrichtung der im Oberbegriff der Patentansprüche 1 und 7 genannten Art
Eine solche Vorrichtung und ein solches Verfahren sind bereits bekannt (DE-OS 23 61038). Bei dem bekannten Verfahren wird ein Stück des schrumpffähigen Kunststoffes um einen Formkern so gelegt, daß der untere Rand über diesen hinausragt Diese Kunststoffhülse wird so weit erwärmt, daß sie sich um den Formkern zusammenzieht und in innige Berührung mit diesem kommt, während der untere Rand, der über den Formkern hinausragt, sich radial nach innen einbiegt Anschließend wird dieser eingeschrumpfte Körper vom eo Formkern abgezogen und in ein aus zwei Gegenformen bestehendes Formwerkzeug gebracht Unter Anwendung von Wärme und Druck wird nun im unteren Teil der Flansch gebildet und der Flansch mit einer aus Schaumstoff bestehenden Endwand heiß versiegelt. Es hat sich jedoch gezeigt, daß dieses Verfahren noch verhältnismäßig unproduktiv ist, da eine Vielzahl von Einzelschritten verwendet werden muß.
Der Erfindung liegt die Aufgabe zugrunde, dieses Verfahren und die zur Durchführung des Verfahrens verwendete Vorrichtung zu verbessern, um mit wenig Kosten und in kurzer Zeit Behälter formen zu können.
Die Erfindung hinsichtlich des Verfahrens ist im Patentanspruch 1 und hinsichtlich der Vorrichtung im Patentanspruch 7 gekennzeichnet
Bei der Erfindung wird der Behälter in wesentlich kürzerer Zeit hergestellt, da auf die Verwendung mehrerer zur Formgebung erforderlicher Teile zu unterschiedlichen Zeitpunkten verzichtet wird. Die Hülse wird nämlich, ist sie einmal am Halter befestigt und jedenfalls am unteren Rand genügend plastifiziert, in einem Formgang zum Flansch geformt Die Anwendung des Saugverfahrens begünstigt nicht nur die Formgebung selbst, sondern verkürzt auch die Gesamtzeit zwischen dem Beginn des Erwärmens bzw. Plastifizierens und dem Ende des Verfestigungsvorgangs.
Besonders günstig ist es, wenn das Formgeben zeitlich mit dem Befestigen der Endwand verbunden wird, wie dies gemäß einer weiteren Ausbildung der Erfindung möglich ist
Wird gemäß einer besonderen Ausbildung der Erfindung die am Halter befestigte Hülse gedreht dann findet trotz Verwendung beispielsweise nur eines einzigen örtlich wirkenden Heizelements eine gleichmäßigere Plastifizierung des unteren Hülsenrandes statt, was nicht nur für eine gleichmäßige Formgebung ohne Beeinträchtigung, sondern auch für die erwünschte gute Verbindung mit der Endwand von Bedeutung ist
Bei Verwendung eines Formwerkzeugs, das Löcher im Bereich der Formflächen aufweist, kann das Saugbzw. Vakuumverfahren besonders einfach und konzentriert zur Wirkung gelangen. Hierdurch wird nicht nur die Formgebung selbst erleichtert sondern ist es auch möglich, die Endwand bis zum dichten Verbinden mit dem Flansch der Hülse durch Saugkräfte am Boden des Formwerkzeugs festzuhalten. Gegenwerkzeuge wie beim Stand der Technik sind bei der Erfindung nicht erforderlich.
Weitere Ausbildungen sind in Unteransprüchen beansprucht
Zwei Ausiührungsbeispiele sind im folgenden anhand der Zeichnung näher erläutert Darin zeigt
F i g. 1 eine Vorrichtung zum Schrumpfformen und Endwandverbinden von zirkularzylindrischen Verpakkungsbehältern in drei verschiedenen Verfahrensstufen und
F i g. 2 eine andere Ausbildung der Vorrichtung von Fig.l.
F i g. 1 zeigt eine Anordnung mit einem drehbaren Halter 23, der dazu dient eine zylindrische Hülse 19 festzuhalten und um ihre Symmetrieachse zu drehen. Die Vorrichtung hat ferner Heizelemente 24, 25 zum Erhitzen bzw. Plastifizieren der freien Kantenzone bzw. des unteren Randes 33 der Hülse 19. Ferner weist die Vorrichtung ein Formwerkzeug 26 auf, das durch eine Stange 29 betätigt wird und mit Hilfe dieser Stange 29 relativ zur Hülse 19 bewegt werden kann. Das Formwerkzeug 26 hat eine innere Formungsfläche, deren Größe und Form dem gewünschten Aussehen des gebildeten Flansches der Hülse 19 bzw. des Behälterkörpers entspricht. Das Formwerkzeug 26 kommuniziert längs des Loches 32 mit einem Raum 31, der durch eine Leitung 30 mit einer Vakuumquelle in Verbindung steht.
Die Flanschformung erfolgt dadurch, daß der untere
Rand 33 der Hülse 19 mit Hilfe der Heizelemente 24,25 erhitzt wird, wobei der erwähnte Flanschbereich 33 dazu gebracht wird, zu schrumpfen und sich zur Bildung eines Flansches 34 nach innen einzubiegen. Da die endgültige Form dieses Flansches 34 jedoch schwierig genau eingehalten werden kann, falls man sich nur auf die Schrumpfungsdeformation allein verläßt, wird die Formgebung dadurch verbessert und erleichtert, daB das Formungswerkzeug 26 in der in Fig. Ib und Ic wiedergegebenen Weise mit dem eingeschrumpften Flansch 34 in Kontakt gebracht wird; dabei wird dieser durch Vakuum zur inneren Formungsfläche des Formwerkzeuges 26 angesaugt, so daB der Flansch 34 abkühlt und sich in dem geformten Zustand stabilisiert Das bedeutet, daB der Flansch 34 eine plane untere Flanschfläche bekommt, die sich als Versiegelungsunterlage für eine als Endwand dienende Platte eignet, die mit Hilfe einer Wärmeversiegelung oder eines durch Wärme aktivierbaren Bindemittels, z. E »hot melt«, am Flansch 34 angebracht wird.
Das Ansetzen und Verbinden der Endwand Zl erfolgt zweckmäßigerweise gleichzeitig mit der Flanschformung, wie in Fig. 1 gezeigt wird. Dabei wird eine Endwand 27 in das Formwerkzeug 26 eingeführt, ehe das Formwerkzeug 26 mit dem eingeschrumpften Flansch 34 in Kontakt gebracht wird. Zur Erlangung der vorgesehenen Saugwirkung am Flansch 34 (um diesen in engen Kontakt mit der Endwand 27 zu bringen) ist an der Endwand 27, jedoch innerhalb des Bereiches, der vom Flansch 34 überdeckt werden wird, eine Anzahl kleinerer Locher oder Schlitze im Formwerkzeug 26 angebracht Falls die Endwand 27 solche Löcher oder Schlitze aufweist, kann der eingeschrumpfte Flansch 34 noch besser an das Formwerkzeug 26 angesaugt und in engen Druckkontakt mit der eingeführten Endwand 27 gebracht werden. Man kann also eine gleichzeitige Flanschformung und Endwandversiegelung erzielen.
Um eine gute Versiegelung Endwand zu bringen, kann an der Endwand 27 vorher ein Bindemittelbelag aus beispielsweise hot melt oder ein thermoplastischer Belag angebracht, werden, der durch eines der Heizelemente 24, 25 erhitzt werden kann, das einen Heißluftstrahl an die Endwand 27 abgeben kann.
Die Endwand 27 kann vorzugsweise aus dem gleichen Material wie der Verpackungskörper, nämlich der Hülse 19 bestehen, es ist aber auch möglich, die Endwand 17 aus anderem Material herzustellen, beispielsweise aus Karton oder homogenem Kunststoff.
Wenn das Formwerkzeug 26 in der in Fig. Ic wiedergegebenen Weise an das eingeschrumpfte Ende der zylindrischen Hülse 19 angepreßt worden ist, wird der Flansch 34 geformt; gleichzeitig wird die Endwand 27 zur Bildung eines flüssigkeitsdichten und haltbaren Behälters fest mit dem Flansch 34 verbunden.
In F i g. 1 ist nur gezeigt, wie man eine Endwand 27 anbringt Es ist aber leicht einzusehen, daß die andere Endwand, falls eine solche an der Hülse 19 gewünscht wird, in gleicher Weise angebracht werden kann, auch wenn der Halter 23 selbstverständlich etwas anders gebaut sein muß. Es ist auch möglich, gleichzeitig zwei Endwände 27 an entgegengesetzten Seiten der zylindrischen Hülse 19 anzubringen. Der Halter 23 muß dann aber etwa mittig an der Hülse 19 angebracht werden, und beide Öffnungskantenzonen der Hülse 19 müssen zur oben beschriebenen Erhitzung und Formungsbearbeitung zugängig sein.
Der kombinierte Arbeitsvorgang mit Flanscheinschrumpfung, Flanschformung und Endwandansetzung ist sehr rationell; diese Arbeitsmomente lassen sich vorteilhaft zu ein und demselben Arbeitsvorgang zusammenfassen.
Falls die Endwand 27 nicht gleichzeitig mit der Einschrumpfung des Flansches 34 angesetzt werden soll, kann eine Anordnung gemäß Fig.2 angewendet werden. Dabei wird der gleiche Halter 23 wie in F i g. 1 benutzt Das Heizelement zur Erwärmung des Randes 33 der zylinderförmigen Hülse 19 ist jedoch etwas
ίο anders geformt und besteht aus einer Wannluftvorrichtung 25 mit zwei Düsen 35, die zu beiden Seiten des Kantenteils bzw. Randes 33 hin gerichtet sind.
Das Formwerkzeug 26 ist um eine der Düsen 35 angeordnet und kann mit Hilfe der Betätigungsstange 29 mit dem eingeschrumpften Flansch 34 in Kontakt gebracht werden. Dieser wird in vorstehend beschriebener Weise dadurch geformt. daB der gebildete, aber noch weiche Flansch 34 mit Hilfe eines Vakuums, das durch Löcher 36 zustande gebracht wird, die mit einem Raum 31 im Formwerkzeug 26 kommunizieren, zum genauen Anliegen an die Formungsfläche des Formwerkzeuges 26 angesaugt wird. Der Raum 31 steht durch die Leitung 30 mit einer hier nicht gezeigten Vakuumquelle in Verbindung.
Falls erwünscht, können gleichzeitig beide Kantenzonen der Hülse 19 eingeschrumpft werden, falls der Halter 23 anders geformt wird. Es ist auch möglich, die Flanschformung so auszuführen, daß die Flansche 34 verschieden werden. Beispielsweise kann man in gewissen Fällen einen unteren Flansch 34 wünschen, der zur Bildung des Behälterbodens mit einer planen Endwand bedeckt wird, während die andere Seite der zylindrischen Hülse 19 beispielsweise zur Bildung eines Flaschenhalses oder dergleichen eingeschrumpft wird.
Es hat sich gezeigt, daß mit dem erfindungsgemäßen Verfahren und der Vorrichtung die rationelle und billige Herstellung von Verpackungsbehältern möglich ist; dabei besteht eine große Wahlfreiheit bezüglich der äußeren Form der Verpackungsbehälter. Zum Beispiel kann man gerade zylindrische Verpackungsbehälter mit rechteckigem oder quadratischem Querschnitt aber auch mit abgerundeten Ecken herstellen. Man kann auch rein zirkularzylindrische und sogar elliptische Verpackungsbehälter herstellen, falls erwünscht Am wichtigsten ist es jedoch, daß man durch die Flanschschrumpfung am Boden des Verpackungsbehälters auch eine sehr große Bodendichtheit und große Festigkeit der Versiegelung zwischen dem Boden der Verpackung und dem Verpackungskörper erzielen
so kann, bei der der eingeschrumpfte Flansch einen integrierten Teil bildet In den Fällen, in denen der Verpackungsbehälter aus einem geraden, zylindrischen Behälterkörper (oder Hülse 19) mit Endwänden besteht, kann die eine aufgesetzte Endwand mit Vorteil ein vorbereitetes Entleerungs- und Fülloch aufweisen, durch das das vorgesehene Füllgut in den Verpackungsbehälter eingefüllt wird, wonach das Fülloch mit einem abreißbaren Deckstreifen überdeckt wird, den man abreißt, wenn die Verpackung geöffnet und des Füllgut zugängig gemacht werden soll.
Wie bereits erwähnt, hat man auch bei der Formung des eingeschrumpften Kopfflansches eine solche Wahlfreiheit, daß die Verpackung im großen und ganzen einer Glasflasche ähnelt, beispielsweise einer Weinflasehe traditioneller Art Auch in diesem Falle kann die Form des eingeschrumpften Teiles mit Hilfe einer Formungsvorrichtung kontrolliert werden, die den weich gemachten, eingeschrumpften Kunststoffteil
wieder an die innere Formungsfläche des Formwerkzeuges 26 ansaugt, wonach sich der Kunststoff in der eingesaugten Lage stabilisiert, wodurch eine große Formungsgenauigkeit erreicht wird Die erfindungsgemäße Methode hat somit den großen Vorteil, daß man bei der Wahl der Verpackungsform eine bedeutend größere Freiheit als bei den bisher bekannten Methoden hat Außerdem erzielt man den Vorteil, daß die eingeschrumpften Teile, beispielsweise die Flansche und der Halsteil eines flaschenähnlichen Behälters, dicker und somit steifer werden als der übrige Zylinderkörper.
Hierzu 1 Blatt Zeichnungen

Claims (7)

Patentansprüche:
1. Verfahren zur Herstellung von insbesondere zylinderförmigen Behältern, bei dem eine insbesondere zylinderförmige, von einem Halter gehaltene Hülse aus schrumpffähigem Kunststoff mindestens teilweise durch Wärme zum Schrumpfen gebracht und durch Formwerkzeuge am unteren Rand zu einem Flansch verformt wird, an dem dadurch ein Behälterboden angebracht wird, daß eine Stirn- oder Endwand dicht mit dem Flansch verbunden wird, dadurch gekennzeichnet, daß der untere Rand (33) der Hülse (19) zum Fonngeben des eingeschrumpfen Flansches (34) an die innere Formfläche des Formwerkzeugs (26) angesaugt und ts gekühlt wird.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Endwand (27) während des Ansaugens mit dem Flansch dicht verbunden wird.
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Hülse (19) während des Plastifizierens um ihre Symmetrieachse an einem oder mehreren Heizelementen (24, 25) vorbeigedreht wird.
4. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Endwand (27) zum dichten Verbinden mit einem wärmeaktivierbaren Bindemittel versehen wird.
5. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß auch die Endwand (27) erwärmt wird.
6. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß mittels Heißluftstrahlen erwärmt wird.
7. Vorrichtung zur Durchführung des Verfahrens nach einem der vorhergehenden Ansprüche, mit einem Halter für die Hülse, mit Heizelementen zum Erwärmen der Hülse und mit einem Formwerkzeug zum Flanschformen, dadurch gekennzeichnet, daß das relativ zum Halter (23) bewegbare Formwerkzeug (26) mit Löchern (32; 316) in der Formfläche versehen ist, durch die der Raum an der Formfläche mit einer Saug- bzw. Vakuumquelle verbindbar ist.
DE2759138A 1976-03-31 1977-03-24 Verfahren und Vorrichtung zur Herstellung von insbesondere zylinderformigen Behältern Expired DE2759138C3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH402076A CH611833A5 (de) 1976-03-31 1976-03-31

Publications (2)

Publication Number Publication Date
DE2759138B2 DE2759138B2 (de) 1978-11-16
DE2759138C3 true DE2759138C3 (de) 1979-07-19

Family

ID=4268314

Family Applications (2)

Application Number Title Priority Date Filing Date
DE2759138A Expired DE2759138C3 (de) 1976-03-31 1977-03-24 Verfahren und Vorrichtung zur Herstellung von insbesondere zylinderformigen Behältern
DE2713048A Expired DE2713048C3 (de) 1976-03-31 1977-03-24 Verfahren zum Herstellen einer Hülse als Teil eines insbesondere zu Verpackungszwecken dienenden Behälters und Vorrichtung zur Durchführung des Verfahrens

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE2713048A Expired DE2713048C3 (de) 1976-03-31 1977-03-24 Verfahren zum Herstellen einer Hülse als Teil eines insbesondere zu Verpackungszwecken dienenden Behälters und Vorrichtung zur Durchführung des Verfahrens

Country Status (12)

Country Link
US (1) US4151024A (de)
JP (1) JPS52119685A (de)
AR (1) AR211364A1 (de)
AU (1) AU508062B2 (de)
CA (1) CA1088408A (de)
CH (1) CH611833A5 (de)
DE (2) DE2759138C3 (de)
ES (1) ES457298A1 (de)
GB (1) GB1535462A (de)
IT (1) IT1074684B (de)
NL (1) NL7703402A (de)
SE (1) SE424058B (de)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE409562B (sv) * 1977-12-23 1979-08-27 Tetra Pak Int Sett och anordning vid tillverkning av hylsor av termoplastiskt, vermekrympbart material
AU529919B2 (en) * 1978-04-25 1983-06-23 Maryland Cup Corporation Foam plastic containers
US4229929A (en) * 1978-06-05 1980-10-28 Leslie Vajtay Thermoplastic container
SE429626B (sv) * 1982-01-20 1983-09-19 Tetra Pak Dev Sett att medelst krympformning framstella forpackningsbehallare jemte anordning for settets utforande
DE3306053C2 (de) * 1982-09-07 1994-11-24 Altstaedter Verpack Vertrieb Verfahren zum Herstellen eines Schlauchstückes aus einer flachen Bahn und Vorrichtung zur Durchführung eines solchen Verfahrens
US4691835A (en) * 1982-12-20 1987-09-08 Mueller Martin L Tamper-evident sealed container and tamper-evident tube and bands and apparatus and method of making and using same
JPH0451138Y2 (de) * 1987-06-12 1992-12-02
SE503491C2 (sv) * 1994-10-12 1996-06-24 Tetra Laval Holdings & Finance Metod och anordning för att styra en tunn materialbana vid formning av materialbanan
SE520431C2 (sv) * 1999-09-22 2003-07-08 Tetra Laval Holdings & Finance Sätt att framställa en med öppningsanordning försedd förpackningsbehållare
SE517051C2 (sv) 1999-12-10 2002-04-09 Tetra Laval Holdings & Finance Kontinuerlig anordning vid en distributionsutrustning
ATE256032T1 (de) * 2000-07-03 2003-12-15 Tetra Laval Holdings & Finance Verpackungsmaschine zum kontinuierlichen herstellen von versiegelten verpackungen mit einem fliessfähigen nahrungsmittel und mit programmierbaren photozellen
ITBO20040491A1 (it) * 2004-07-30 2004-10-30 Aetna Group Spa Macchina e metodo per la formazione di spezzoni tubolari di film da imballaggio
US7637733B2 (en) * 2004-12-02 2009-12-29 Graham Packaging Company, L.P. Method and apparatus for reforming a portion of a plastic container to include a three-dimensional feature or transferable element
US20070126152A1 (en) * 2005-12-06 2007-06-07 Graham Packaging Company, L.P. Methods and apparatuses for reforming an upper portion of a blow molded plastic container
CA2720457C (fr) 2008-04-10 2015-12-22 Aisapack Holding S.A. Procede de fabrication de tubes par soudage
US8734709B2 (en) 2009-04-07 2014-05-27 Graham Packaging Company, L.P. Apparatus for reforming a portion of a plastic container
CA2757742C (en) 2009-04-07 2017-09-05 Graham Packaging Company, L.P. Method and apparatus for reforming a portion of a plastic container using induction heating
DE102011013117A1 (de) * 2011-03-04 2012-09-06 Krones Aktiengesellschaft Verpackungsmodul für mit Verpackungs- und/oder unter Erwärmung schrumpfbarer Schrumpffolie zu umhüllende Gebinde oder Artikelgruppen
GB2554850A (en) * 2016-07-12 2018-04-18 Ramfoam Ltd Conduit formation and use
EP3332944B1 (de) * 2016-12-07 2019-04-03 PackSys Global AG Verfahren und vorrichtung zum herstellen von tubenkörpern für verpackungstuben
AU2019207533A1 (en) 2018-01-15 2020-07-02 Auzfresh Holdings Pty Ltd Apparatus for manufacturing a container
CN111805933B (zh) * 2020-07-13 2022-01-04 江西远业环保科技有限公司 一种无纺布环保袋成型加工设备
SE2251115A1 (en) * 2022-09-27 2024-03-28 Pulpac AB Method for dry-forming a cellulose bottle, cellulose bottle forming unit and cellulose bottle

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2138568A (en) * 1936-03-20 1938-11-29 Du Pont Artificial cellulosic tubular structure
JPS4842715B1 (de) * 1964-09-22 1973-12-14
US3414181A (en) * 1965-06-29 1968-12-03 Union Carbide Corp Partial deorientation of segments of bioriented thermoplastic sheet
US3511435A (en) * 1965-10-21 1970-05-12 Continental Can Co Laminated container and method of making a laminated container
US3620896A (en) * 1968-07-31 1971-11-16 Glasgow Products Inc Clamping tape
US3673033A (en) * 1970-02-02 1972-06-27 Sweethart Plastics Inc Method for making disposable plastic bucket
US3899807A (en) * 1971-04-02 1975-08-19 Raychem Corp Heat recoverable articles and method of making same
US3970492A (en) * 1973-04-25 1976-07-20 Owens-Illinois, Inc. Method and apparatus for forming thermoplastic containers
CA1041261A (en) * 1972-12-08 1978-10-31 Ikuya Shimano Method for producing receptacles from thermoplastic resin foam sheet
US3969173A (en) * 1973-11-23 1976-07-13 Owens-Illinois, Inc. Method and apparatus for fabricating thermoplastic containers
US4054474A (en) * 1976-03-18 1977-10-18 Aluminum Company Of America Shrink wrapping

Also Published As

Publication number Publication date
AR211364A1 (es) 1977-11-30
CA1088408A (en) 1980-10-28
DE2759138B2 (de) 1978-11-16
NL7703402A (nl) 1977-10-04
SE7703658L (sv) 1977-10-01
DE2713048A1 (de) 1977-10-13
CH611833A5 (de) 1979-06-29
JPS52119685A (en) 1977-10-07
ES457298A1 (es) 1978-06-16
DE2713048C3 (de) 1979-04-19
IT1074684B (it) 1985-04-20
GB1535462A (en) 1978-12-13
US4151024A (en) 1979-04-24
DE2713048B2 (de) 1978-08-17
AU508062B2 (en) 1980-03-06
SE424058B (sv) 1982-06-28
AU2352277A (en) 1978-09-28

Similar Documents

Publication Publication Date Title
DE2759138C3 (de) Verfahren und Vorrichtung zur Herstellung von insbesondere zylinderformigen Behältern
DE69117425T2 (de) Verfahren zur herstellung einer henkelflasche
DE2559155C3 (de) Einweg-Behälter aus in Wärme schrumpffähigem Schaumkunststoff
DE2362174A1 (de) Verfahren zum einfuegen einer dichtungsfolie oder eines etiketts bei der herstellung von gegenstaenden aus thermoplastischem kunststoff
DE1604653B2 (de) Hohlkoerper aus kunststoff sowie verfahren und vorrichtung zu dessen herstellung
DE10105699A1 (de) Verfahren und Vorrichtung zum Herstellen eines diffusionsdichten Kunststoffbehälters
DE1299406B (de) Verfahren und Vorrichtung zum Herstellen von Flaschen u. dgl. Hohl-koerpern aus warmformbaren Kunststoffen
EP0073356A1 (de) Verfahren zur Herstellung einer Tube aus Kunststoff mit zugehöriger Verschlusskappe
DE4225161A1 (de) Verfahren zum Herstellen eines Kunststofformteils
DE2348607C2 (de) Thermoschweißverfahren zum stirnseitigen Verbinden zweier Kunststoffwände
DE1917889B2 (de) Verpackungsbehälter aus einem dünnwandigen, inneren Hohlkörper aus Kunststoff und einer diesen mindestens teilweise umgebenden Ummantelung sowie Verfahren zu dessen Herstellung
DE1429001B2 (de) Verfahren und vorrichtung zum herstellen eines behaelters aus thermoplastischem material
DE1901473B2 (de) Blasform zum Formen eines Hohlkörpers aus einem thermoplastischen Kunststoff
DE3929664A1 (de) Verfahren und vorrichtung zur herstellung von behaeltern mit einem anschlusselement, wie zum beispiel einem fuell- und/oder entnahmestutzen
DE1479656B2 (de) Verfahren und Vorrichtung zur Herstellung von hohlen Gegenständen aus thermoplastischem Material durch Aufweiten mittels eines Blasmediums
DE1250104B (de)
DE19730798C2 (de) Verfahren zum Herstellen einer bebilderten Wärmflasche und danach hergestellte Wärmflasche
DE2045784A1 (de) Vorrichtung zum Formen eines Be halterteiles
DE1429001C (de) Verfahren und Vorrichtung zum Herstellen eines Behälters aus thermoplastischem Material
DE1479797C (de) Vorrichtung zum Herstellen von Hohl korpern aus thermoplastischem Kunststoff
DE1536099A1 (de) Behaelter zur Aufnahme fluessiger Substanzen
DE102016103207B3 (de) Verfahren zur Herstellung eines T-Korken und nach dem Verfahren hergestellter T-Korken
DE1929277B1 (de) Werkzeug zum Tiefziehen oder Versiegeln von aus einer Kunststoffolie gebildeten Verpackungsbehaeltern
DE1479797B2 (de) Vorrichtung zum herstellen von hohlkoerpern aus thermoplasti schem kunststoff
WO2015158423A1 (de) VERFAHREN ZUM ÜBERFÜHREN VON BODENLABELN UND BANDEROLENLABELN IN EINE SPRITZGIEßFORM UND HIERFÜR GEEIGNETE VORRICHTUNG ZUR HERSTELLUNG VON MIT BODENLABELN UND BANDEROLENLABELN VERSEHENEN SPRITZGUSSTEILEN

Legal Events

Date Code Title Description
OI Miscellaneous see part 1
OI Miscellaneous see part 1
OI Miscellaneous see part 1
OD Request for examination
BI Miscellaneous see part 2
C3 Grant after two publication steps (3rd publication)
8328 Change in the person/name/address of the agent

Free format text: MUELLER, H., DIPL.-ING., PAT.-ANW., 8000 MUENCHEN

8327 Change in the person/name/address of the patent owner

Owner name: TETRA PAK FINANCE & TRADING S.A., PULLY, CH

8328 Change in the person/name/address of the agent

Free format text: MUELLER, H., DIPL.-ING., 8000 MUENCHEN SCHUPFNER, G., DIPL.-CHEM. DR.PHIL.NAT., 2110 BUCHHOLZ GAUGER, H., DIPL.-ING., PAT.-ANW., 8000 MUENCHEN

8339 Ceased/non-payment of the annual fee