GB1570486A - Method and apparatus for making containers - Google Patents

Method and apparatus for making containers Download PDF

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Publication number
GB1570486A
GB1570486A GB34350/75A GB3435075A GB1570486A GB 1570486 A GB1570486 A GB 1570486A GB 34350/75 A GB34350/75 A GB 34350/75A GB 3435075 A GB3435075 A GB 3435075A GB 1570486 A GB1570486 A GB 1570486A
Authority
GB
United Kingdom
Prior art keywords
headpiece
tubular body
sleeve
end portion
tubular
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
GB34350/75A
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.)
Crown Packaging UK Ltd
Original Assignee
Metal Box PLC
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 Metal Box PLC filed Critical Metal Box PLC
Priority to GB34350/75A priority Critical patent/GB1570486A/en
Publication of GB1570486A publication Critical patent/GB1570486A/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • 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
    • B29C65/103—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 direct heating both surfaces 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
    • 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
    • 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
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/567—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using a tamping or a swaging operation, i.e. at least partially deforming the edge or the rim of a first part to be joined to clamp a second part to be joined
    • B29C65/568—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using a tamping or a swaging operation, i.e. at least partially deforming the edge or the rim of a first part to be joined to clamp a second part to be joined using a swaging operation, i.e. totally deforming the edge or the rim of a first part to be joined to clamp a second part 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
    • B29C66/01—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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1224—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a butt joint-segment
    • 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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1226—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least one bevelled joint-segment
    • 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
    • B29C66/50—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
    • B29C66/61—Joining from or joining on the inside
    • B29C66/612—Making circumferential 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/63—Internally supporting the article during joining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81425—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being stepped, e.g. comprising a shoulder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81427—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81431—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single cavity, e.g. a groove
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/816—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8161—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps said pressing elements being supported or backed-up by springs or by resilient material
    • 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
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D23/00—Producing tubular articles
    • B29D23/20—Flexible squeeze tubes, e.g. for cosmetics
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7841—Holding or clamping means for handling purposes
    • B29C65/7847—Holding or clamping means for handling purposes using vacuum to hold 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
    • 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
    • B29C66/72321—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 metals or their alloys
    • 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
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81415—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled
    • 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
    • B29L2023/20—Flexible squeeze tubes, e.g. for cosmetics

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Tubes (AREA)

Description

(54) METHOD AND APPARATUS FOR MAKING CONTAINERS (71) We, METAL BOX LIMITED, of Queens House, Forbury Road, Reading RG1 3JH, Berkshire, England, a British Company, do hereby declare the invention for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: This invention relates to containers and to methods and apparatus for making them.
According to the invention in one aspect, a method of making a container of the kind described includes supporting a tubular body within a sleeve engaging the outer surface of the body, heating an end portion of the supported body to soften said end portion introducing the headpiece into said end portion, and applying axial pressure to the end portion while the latter is still soft so as to form from the end portion while the latter is still soft so as to form from the end portion an inwardly directed lip overlapping the headpiece periphery. The body is so positioned in the sleeve that the whole of the end portion to be softened by heating is in close engagement with the sleeve until said axial pressure is applied.
According to another aspect the invention provides apparatus for making a container, said apparatus comprising a base providing a mount for a tubular body, a sleeve upstanding from the base, which sleeve is arranged to support the tubular body by engagement with an outer surface of the body, means to heat at least a portion of the supported body. means to support a head piece within the supported body, and means movable axially of the sleeve and arranged to apply pressure to the heated portion to form said heated portion into an inwardly directed lip engaging the headpiece.
According to a further aspect the invention provides a container made by the method or by means of the apparatus according to the invention.
Various embodiments of the invention will now be described, by way of example, and with reference to the drawings accompanying the Provisional Specification, in which: Fig. 1 is a sectioned side elevation of the bottom tool apparatus depicted shortly after commencement of operation; Fig. 2 is a part sectioned side elevation of the apparatus of Fig. 1 with a top tool about to be used; Fig. 3 shows the apparatus of Fig. 2 at the end of operation just before the top tool is retracted; Fig. 4 shows diagrammatically an alternative embodiment of the apparatus, having a fixed mandrel; Fig. 5 shows the apparatus of Fig. 4 during heating of the headpiece; and Fig. 6 shows the apparatus of Fig. 4 after forming of an inwardly directed lip.
Referring to Figs. 1 and 2 it will be seen that one embodiment of the apparatus com prises:- means, in the form of a sleeve 3, to support at least an annular end portion of tubular body 10; means, in the form of an annular pipe 9 distributing hot air, to heat at least part of the supported portion of the body; means, in the form of a chuck 5, to support a head piece 11 within the supported portion of the tubular body 10 and axially movable means, in the form of a pressure ring 13, to form the heated and supported portion 1 0A into an inwardly directed lip engaging the head piece 11.
Referring to Fig. 1, the bottom tool 1 comprises a base member 2, a sleeve 3 fixed thereto and a mandrel 4 reciprocable therein. The base member has a vent pipe 18 extending through it. The mandrel 4 has the chuck 5 at an upper end and a travel limiting means, in the form of a nut 6, at the other end. The mandrel 4 is resiliently sup ported by a spring 7 acting between a collar 8 attached to the mandrel and a portion of the base member 2. In this example the chuck 5 has a protruding portion 5A upstanding therefrom, to tenable it to support a headpiece in the form of a pierced disc.
In Fig. 1 a thermoplastic tubular body 10 has been placed on the base member 2 inside the sleeve 3 so that, at least the portion 10A of the body is in close engagement with the sleeve. The headpiece 11, preferably made from thermoplastic material, has been placed on the chuck 5. In this example the headpiece is frustoconical and has a central nozzle, such as are used on tubes for toothpaste.
Referring to Fig. 2, it will be seen that, at the beginning of the operation of the apparatus, the spring 7 holds the mandrel 4, and therefore the chuck 5, a little way above the top of the sleeve 3 so that hot air may be directed from the annular pipe 9 into the tubular sleeve 3 to heat the upper portion 10A of the body 10. The vent pipe 18, in the base member 2, allows the downwardly directed hot air from the bustle pipe 9 to leave the apparatus.
In Fig. 2 the bottom tool is in the same position as in Fig. 1 and a top tool 12 has been brought towards the bottom tool by known means such as the movement of a press.
The top tool comprises an outer pressure ring 13 and an inner holding means 14 reciprocable therein. The holding means 14 comprises a holding portion 15 mounted on the lower end of a shaft 16, a retaining nut 19 being fixed to the other end of the shaft to limit the travel thereof within the outer pressure ring. In Fig. 2 the holding means 14 is urged to a downward position by a spring 17 which operates between the outer pressure ring 12 and the holding portion 15.
In Fig. 3 the top and bottom tools 1 and 12 are shown in engagement, the spring 17 in the top tool 12 and the spring 7 in the bottom tool 1 are compressed, so that the headpiece 11 is held firmly on the chuck 5 and the mandrel 4 is pushed downwards to locate the periphery of the headpiece 11 within that portion 1 0A of the tubular body 10 which was in the path of the hot air emerging from the annular pipe 9.
In operation of the apparatus, a tubular body 10 is inserted to be supported in the sleeve 3 which engages with the outer surface of the body. The sleeve 3 may optionally be provided with orifices through which a vacuum is drawn to hold the tubular body 10 and prevent the upper portion 1 0A of the tubular body 10 belling out when it is softened by heat. Heat is applied by means of hot air directed from the annular pipe 9.
While the tubular body is heated in the sleeve 3, the headpiece 11 is placed on the chuck 5 and may optionally be heated at its periphery by means of hot air from the annular pipe 9.
The top tool 12 is moved axially towards the bottom tool and the holding portion 15, of inner holding means 14, first pushes the headpiece 11 firmly onto the chuck. Continued downward travel of the top tool 12 brings pressure from the holding means to bear on the mandrel 4 so that both spring 17 on the top tool 12 and spring 7 on the bottom tool 1 are compressed and the mandrel 4 travels to carry the chuck 5 and headpiece 11 at least into the heated portion 1 0A of the tubular body 10 so that the heated portion 1 0A of the tubular body 10 is above the periphery of the headpiece 11.
The outer pressure ring 13 is then brought down against the spring pressures so that a peripheral margin thereof engages wth heated, and therefore softened, portion 1 0A of the tubular body 10 to apply axial pressure to the end portion 10A, while it is still soft, so as to form from the end portion an inwardly directed lip 10B, overlapping the headpiece 11 and so bond the headpiece 11 to the tubular body 10.
Although the invention has been described with reference to a resiliently mounted mandrel, a fixed solid mandrel is also within the scope of the invention as shown in Figs. 4, 5 and 6.
Referring to Fig. 4, it will be seen that the apparatus comprises a bottom tool 21 having a base member 22, a sleeve 23 and a rigid mandrel 24 which supports a chuck 25.
A tubular body 10, of thermoplastic material, has been placed within the sleeve 23, so that engagement, between the inside of the sleeve 23 and the outside of the tubular body 10, supports at least an upper portion of the tubular body 10 so that it cannot bell outwards when heated. A headpiece 11, in the form of a nozzle has been positioned on the chuck 25 supported on the rigid mandrel 24, within the tubular body 10, so that an annular portion 1 0A protrudes above the periphery of the headpiece 11.
In Fig. 5, a heating means, in the form of an annular pipe 29, is provided to direct hot air onto the protruding portion 1 0A of the tubular body 10, and the adjacent peripheral portion of the headpiece 11.
In Fig. 6, a top tool 26 is shown in engagement with the bottom tool 21. The top tool has a portion shaped so that it can enter the sleeve 23 and work upon the softened portion 1 0A to form the inwardly directed lip 10B overlapping the headpiece 11 peripherally in like manner to the lip lOB shown in Fig. 3: The apparatus described may either be used to bond the headpiece 11 to the tubular protruding portion 10A or used simply for turning in the portion 10A to make an inturned lip to retain the headpiece. More heat would be applied from the annular pipe 29 to bond than to simply form the inturned lip.
Whereas, in the method described with reference to Figs. 1. 2 and 3, heating of the tubular body portion 10 at least commences before the headpiece 11 is entered therein, in the preferred method of using the apparatus of Figs. 4, 5 and 6 the headpiece 11 is first fitted within the tubular body 10 whereupon heat is applied to both parts.
Although the invention has been described with reference to thermoplastic tubular containers having one end closed by a headpiece in the form of a nozzle (such as those used for toothpaste, cosmetics or food products), it is not limited thereto. Laminated bodies made up from layers of thermoplastic material and for instance aluminium foil or paper are also within the scope of the invention.
Furthermore the headpiece may take a variety of forms such as flat discs or shaped terminal blocks so permitting the manufacture of plastics battery cases, capacitor cases and the like.
It will be noticed that, in the apparatus described, the top tools enter the retaining sleeve and then push initially upon the top of the thermally softened portion of the tubular body. If the tubular body is very thin it could conceivably slide axially past and buckle below the headpiece. However this buckling, of the tubular body 10, can be prevented by introducing air pressure through the vent pipe 18 of Figs. 1, 2 and 3.
Such a vent pipe 18, is indicated by dotted lines in Figs. 4, 5 and 6.
When the top tool is forming the inturned lip. it also interrupts the path of the hot air from the bustle pipe and so economies may be made by shutting off the hot air while the top tool is in use.
WHAT WE CLAIM IS: 1. A method of making a container, including the steps of supporting a tubular body within a sleeve engaging the outer surface of the body, heating an end portion of the supported body to soften said end portion introducing a headpiece into said end portion, and applying axial pressure to the end portion while the latter is still soft so as to form, from the end portion, an inwardly directed lip overlapping the headpiece periphery.
2. A method according to Claim 1 wherein the headpiece is introduced into the body portion before the heating.
3. A method according to Claim 1 or Claim 2 wherein the headpiece is bonded to the tubular portion.
4. A method according to Claim 1 or Claim 2 wherein the headpiece is retained in the body by the inwardly directed lip.
5. Apparatus for making a container, said apparatus comprising a base providing a mount for a tubular body, a sleeve upstanding from the base, which sleeve is arranged to support the tubular body by engagement with an outer surface of the body, means to heat at least a portion of the supported body, means to support a head piece within the supported body, and means movable axially of the sleeve and arranged to apply pressure to the heated portion to form said heated portion into an inwardly directed lip engaging the headpiece.
6. Apparatus according to Claim 5 wherein the means to heat the supported body includes an annular pipe constructed for directing heated air towards said portion of the body, wherein the means to support the head piece comprises a chuck on a mandrel, and wherein the axially movable means comprises a top tool having a portion shaped to form the heated portion of the tubular body into the inwardly directed lip.
7. Apparatus according to Claim 6 wherein the mandrel is resiliently supported in a raised position for placing of the headpiece on the chuck.
8. Apparatus according to Claim 6 or Claim 7 wherein the top tool has holding means for holding the headpiece until located on the chuck.
9. A container manufactured substantially according to the method hereinbefore described.
10. A container manufactured by means of the apparatus hereinbefore described.
11. Apparatus, substantially as hereinbefore described with reference to Figs. 1 to 3 of the drawings accompanying the Provisional Specification.
12. Apparatus, substantially as hereinbefore described with reference to Figs. 4 to 6 of the drawings accompanying the Provisional Specification.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (12)

**WARNING** start of CLMS field may overlap end of DESC **. for turning in the portion 10A to make an inturned lip to retain the headpiece. More heat would be applied from the annular pipe 29 to bond than to simply form the inturned lip. Whereas, in the method described with reference to Figs. 1. 2 and 3, heating of the tubular body portion 10 at least commences before the headpiece 11 is entered therein, in the preferred method of using the apparatus of Figs. 4, 5 and 6 the headpiece 11 is first fitted within the tubular body 10 whereupon heat is applied to both parts. Although the invention has been described with reference to thermoplastic tubular containers having one end closed by a headpiece in the form of a nozzle (such as those used for toothpaste, cosmetics or food products), it is not limited thereto. Laminated bodies made up from layers of thermoplastic material and for instance aluminium foil or paper are also within the scope of the invention. Furthermore the headpiece may take a variety of forms such as flat discs or shaped terminal blocks so permitting the manufacture of plastics battery cases, capacitor cases and the like. It will be noticed that, in the apparatus described, the top tools enter the retaining sleeve and then push initially upon the top of the thermally softened portion of the tubular body. If the tubular body is very thin it could conceivably slide axially past and buckle below the headpiece. However this buckling, of the tubular body 10, can be prevented by introducing air pressure through the vent pipe 18 of Figs. 1, 2 and 3. Such a vent pipe 18, is indicated by dotted lines in Figs. 4, 5 and 6. When the top tool is forming the inturned lip. it also interrupts the path of the hot air from the bustle pipe and so economies may be made by shutting off the hot air while the top tool is in use. WHAT WE CLAIM IS:
1. A method of making a container, including the steps of supporting a tubular body within a sleeve engaging the outer surface of the body, heating an end portion of the supported body to soften said end portion introducing a headpiece into said end portion, and applying axial pressure to the end portion while the latter is still soft so as to form, from the end portion, an inwardly directed lip overlapping the headpiece periphery.
2. A method according to Claim 1 wherein the headpiece is introduced into the body portion before the heating.
3. A method according to Claim 1 or Claim 2 wherein the headpiece is bonded to the tubular portion.
4. A method according to Claim 1 or Claim 2 wherein the headpiece is retained in the body by the inwardly directed lip.
5. Apparatus for making a container, said apparatus comprising a base providing a mount for a tubular body, a sleeve upstanding from the base, which sleeve is arranged to support the tubular body by engagement with an outer surface of the body, means to heat at least a portion of the supported body, means to support a head piece within the supported body, and means movable axially of the sleeve and arranged to apply pressure to the heated portion to form said heated portion into an inwardly directed lip engaging the headpiece.
6. Apparatus according to Claim 5 wherein the means to heat the supported body includes an annular pipe constructed for directing heated air towards said portion of the body, wherein the means to support the head piece comprises a chuck on a mandrel, and wherein the axially movable means comprises a top tool having a portion shaped to form the heated portion of the tubular body into the inwardly directed lip.
7. Apparatus according to Claim 6 wherein the mandrel is resiliently supported in a raised position for placing of the headpiece on the chuck.
8. Apparatus according to Claim 6 or Claim 7 wherein the top tool has holding means for holding the headpiece until located on the chuck.
9. A container manufactured substantially according to the method hereinbefore described.
10. A container manufactured by means of the apparatus hereinbefore described.
11. Apparatus, substantially as hereinbefore described with reference to Figs. 1 to 3 of the drawings accompanying the Provisional Specification.
12. Apparatus, substantially as hereinbefore described with reference to Figs. 4 to 6 of the drawings accompanying the Provisional Specification.
GB34350/75A 1976-11-15 1976-11-15 Method and apparatus for making containers Expired GB1570486A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB34350/75A GB1570486A (en) 1976-11-15 1976-11-15 Method and apparatus for making containers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB34350/75A GB1570486A (en) 1976-11-15 1976-11-15 Method and apparatus for making containers

Publications (1)

Publication Number Publication Date
GB1570486A true GB1570486A (en) 1980-07-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
GB34350/75A Expired GB1570486A (en) 1976-11-15 1976-11-15 Method and apparatus for making containers

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2477465A1 (en) * 1980-03-06 1981-09-11 Sumitomo Bakelite Co METHOD AND MACHINE FOR FIXING A PLASTIC BOTTOM PLATE AT THE END OF A HOLLOW CYLINDER, IN PLASTIC MATERIAL, OPEN AT BOTH ENDS
EP2781341A1 (en) * 2013-03-20 2014-09-24 Pirlo GmbH & Co. KG Method and device for producing laminate tubes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2477465A1 (en) * 1980-03-06 1981-09-11 Sumitomo Bakelite Co METHOD AND MACHINE FOR FIXING A PLASTIC BOTTOM PLATE AT THE END OF A HOLLOW CYLINDER, IN PLASTIC MATERIAL, OPEN AT BOTH ENDS
EP2781341A1 (en) * 2013-03-20 2014-09-24 Pirlo GmbH & Co. KG Method and device for producing laminate tubes

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19921115