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WO2011077091A1 - Improvements in or relating to heating devices and methods - Google Patents

Improvements in or relating to heating devices and methods Download PDF

Info

Publication number
WO2011077091A1
WO2011077091A1 PCT/GB2010/002318 GB2010002318W WO2011077091A1 WO 2011077091 A1 WO2011077091 A1 WO 2011077091A1 GB 2010002318 W GB2010002318 W GB 2010002318W WO 2011077091 A1 WO2011077091 A1 WO 2011077091A1
Authority
WO
WIPO (PCT)
Prior art keywords
flange
surface portion
heating
cut
toothed
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.)
Ceased
Application number
PCT/GB2010/002318
Other languages
French (fr)
Inventor
Lars Aksel Thingelstad
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.)
Elopak Systems AG
Original Assignee
Elopak Systems AG
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 Elopak Systems AG filed Critical Elopak Systems AG
Priority to EP10813071A priority Critical patent/EP2516136A1/en
Publication of WO2011077091A1 publication Critical patent/WO2011077091A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/348—Avoiding melting or weakening of the zone directly next to the joint area, e.g. by cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B29C66/5324—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length
    • B29C66/53245—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being hollow
    • B29C66/53246—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being hollow said single elements being spouts, e.g. joining spouts to containers
    • B29C66/53247—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being hollow said single elements being spouts, e.g. joining spouts to containers said spouts comprising flanges
    • 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
    • B29C66/70—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
    • 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
    • B29C66/8167—Quick change joining tools or surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/72—Contents-dispensing means
    • B65D5/74—Spouts
    • B65D5/746—Spouts formed separately from the container
    • B65D5/747—Spouts formed separately from the container with means for piercing or cutting the container wall or a membrane connected to said wall
    • B65D5/748—Spouts formed separately from the container with means for piercing or cutting the container wall or a membrane connected to said wall a major part of the container wall or membrane being left inside the container after the opening
    • 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
    • B29C2035/046—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using gas or flames dried air
    • 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
    • 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
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B29K2023/0608—PE, i.e. polyethylene characterised by its density
    • B29K2023/0633—LDPE, i.e. low density polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/08—Copolymers of ethylene
    • B29K2023/086—EVOH, i.e. ethylene vinyl alcohol copolymer
    • 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
    • B29K2101/00—Use of unspecified macromolecular compounds as moulding material
    • B29K2101/12—Thermoplastic materials
    • 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
    • B29K2711/00—Use of natural products or their composites, not provided for in groups B29K2601/00 - B29K2709/00, for preformed parts, e.g. for inserts
    • B29K2711/12—Paper, e.g. cardboard
    • B29K2711/123—Coated
    • 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
    • B29K2995/0068—Permeability to liquids; Adsorption
    • B29K2995/0069—Permeability to liquids; Adsorption non-permeable
    • 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
    • B29L2009/00—Layered products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7162—Boxes, cartons, cases
    • B29L2031/7166—Cartons of the fruit juice or milk type, i.e. containers of polygonal cross sections formed by folding blanks into a tubular body with end-closing or contents-supporting elements, e.g. gable type containers
    • 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
    • B31B50/74—Auxiliary operations
    • B31B50/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B50/84—Forming or attaching means for filling or dispensing contents, e.g. valves or spouts

Definitions

  • This invention relates to a heating device for heating an outwardly facing surface portion of a flange of a pour spout fitment, or of an external surface of a container, and to a method of heating that surface portion.
  • the fitment in the other case mentioned above, it is also known for the fitment to include a plunger which has a sharp, often toothed, often annular, inner end which pieces through the above-mentioned location to form the hole, upon rotating of a screw cap of the fitment, or upon manual pressing inwards of the plunger.
  • WO2009140744 A1 discloses an apparatus for welding, to the inside surface of a tube body, bottle body, or box body, an axially inner rim of a head incorporating an externally threaded pour spout. During the welding operation, that end zone of the body receiving the head is curved inwards onto an outer annular part of the external surface of the head.
  • the apparatus serves to improve the quality of the weld and gives low reject percentages. It has a mandrel on which the head and the body are placed, as well as a cooling element and a nozzle both coaxial with the mandrel.
  • the nozzle comprises two tubular parts - internal and external - which form between them a channel for feeding heating gas.
  • the channel is co-axial with the mandrel and diverges outwardly in the direction of the mandrel so as to heat the head and foil of the body in an annular recess between the head and the aforementioned end zone of the body before that end zone is curved inwards and applied to the head.
  • the apparatus consists of only one work station.
  • the cooling element serves also as a forming element for that end zone and consists of a cooling metal ring located in a forming metal ring. There is a heat-insulating ring between the latter and the cooling metal ring. In the condition of heating, the heat-insulating ring encircles that end zone.
  • US3783029A discloses an adaptor for a flameless heat tool and comprising a housing defining an outwardly diverging interior chamber and detachably mountable over the exit nozzle of the tool. Supported within the chamber is a baffle member for establishing an annularly shaped outwardly diverging flow of the heated compressed air exiting from the nozzle and the chamber.
  • the baffle includes a part axially extending from the chamber and beyond the housing, which part is adapted to extend into and close a work surface opening whereby the annularly shaped flow of hot air exiting from the housing is directed against an annular portion of the work surface surrounding the opening and heat is excluded from the opening.
  • the adaptor is especially useful in connection with flameless heat tools for applying heat-melt fasteners to laminated panels.
  • Such fastener may comprise an externally flanged, internally threaded, hollow metal tube closely receiving externally a complementary, externally flanged, hollow plastics ring whereby the metal tube is adhered to the panel.
  • a heating device for heating an annular, outwardly facing surface portion of (i) a flange of a pour spout fitment comprising a flanged pour spout whereof the flange is to be sealingly applied to an external surface of a container, and a toothed, tubular plunger whereof a toothed edge extends to substantially radially inwards of said flange, or (ii) an external surface of a container formed with a partial-depth cut encircled by said surface portion, said heating device comprising an annular heat-emitting arrangement for locating substantially co- axially of said flange or said cut and serving to direct heating medium obliquely outwardly to impinge upon said outwardly facing surface portion rather than upon said toothed edge or said cut.
  • a method comprising heating an annular, outwardly facing surface portion of (i) a flange of a pour spout fitment whereof a toothed, tubular plunger has a toothed edge which extends to substantially radially inwards of said flange, or (ii) an external surface of a container formed with a partial-depth cut encircled by said surface portion, said method comprising directing heating medium obliquely outwardly to impinge upon said outwardly facing surface portion rather than upon said toothed edge or said cut.
  • the invention it is possible relatively to reduce heating of the toothed edge of the plunger, which might distort or otherwise damage the same and thereby render it less suited to cutting through the packaging material of a container to which the fitment is to be attached, or, where there is a barrier foil closing the inner end of the pour spout, cutting through that foil. It is also possible relatively to reduce heating of one or more barrier layers beneath the cut, which might otherwise damage the barrier layer(s) and thereby reduce the barrier effect.
  • the cut may be in the form of a closed loop, in particular a circle, but is preferably an open loop.
  • heating devices there may be provided two such heating devices, one for the surface portion of the flange and the other for the surface portion of the container.
  • Figure 1 shows an axial section through a heating device heating an outwardly facing surface of a flange of a pour spout fitment
  • Figure 2 shows an axial section through a heating device heating an external surface of a container
  • Figure 3 is a perspective view of the device of Figure 2.
  • the heating device comprises a supply of hot air (not shown) and a nozzle 2 of circular cross-section with a hot air outlet in the form of a ring of holes 4 co-axial with the nozzle.
  • the holes 4 each extend in an axial plane of the nozzle 2 and are directed obliquely outwardly, so as to emit jets of hot air, as indicated by the arrows 6.
  • Thermoplastics pour spout fitments which are identical to each other and of which one is shown and referenced 8 are presented one after another to the nozzle 2 so as to be located substantially co-axially with the nozzle.
  • Each pour spout fitment consists of three parts, namely a screw cap 10 with a tamper-evident band 12, a pour spout 14 with an annular flange 16, and a tubular plunger 18 with a toothed cutting edge 20 with teeth 22 of which points are located substantially radially inwards of the flange 16.
  • driving projections thereon engage with abutments on the plunger 18 to cause the same to turn about the axis of the fitment 8 and, owing to helical threading 24 between the plunger 18 and the pour spout 14, to cause the plunger to advance helically so that the teeth 22 pierce packaging material of a carton to which the fitment 8 has been applied.
  • the outwardly facing annular surface 26 of the flange 16 is first rendered tacky by application of the hot air jets 6 thereto, as shown in the Figure.
  • the hot air jets 6 tends not to reach the teeth 22, so avoiding heating of the thermoplastics teeth, which would tend to distort them, thus to make them less sharp, with the disadvantage of reducing the cutting performance of the teeth on the packaging material.
  • the heating device again comprises a supply of hot air (not shown), with a nozzle 32 of circular cross-section with a hot air outlet in the form of a ring of holes 34 co-axial with the nozzle.
  • the holes 34 each extend in an axial plane of the nozzle 32 and are directed obliquely outwardly, so as to emit jets of hot air, as indicated by the arrows 36.
  • Substantially rectangular, inclined, roof sub-panels which are identical to each other and of which one is shown fragmentarily and referenced 38 and which belong to respective gable-topped cartons are presented one after another to the nozzle 32 so that respective open-loop-form, partial-depth cuts of which one is seen and referenced 40 are located substantially co-axially with the nozzle 32.
  • the gable-topped carton has been made from a laminate consisting of innermost and outermost, thermoplastics, moisture barrier layers 42 and 44 of, for example, low density polyethylene (LDPE). Sandwiched between those layers is a paperboard substrate 46 and an oxygen barrier layer 48 of, for example, ethylene vinyl alcohol (EVOH).
  • LDPE low density polyethylene
  • the nozzle 32 has a flange 50 formed with through holes 52 whereby the nozzle 32 may be fixed in position.
  • an external annular surface portion of the sub-panel 38 encircling the partial-depth cut 40 is first rendered tacky by application of the hot air jets 7 thereto, as shown in Figure 2.
  • the hot air tends not to reach the partial depth cut 40, so avoiding heating of the parts of the layers 44 and 48 therebeneath, which would tend to damage those parts, if not burn holes therethrough.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Composite Materials (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Package Closures (AREA)
  • Making Paper Articles (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

A heating device for heating an annular, outwardly facing surface portion (26) of (i) a flange (16) of a pour spout fitment (8) comprising a flanged pour spout (14) whereof the flange (16) is to be sealingly applied to an external surface of a container, and a toothed, tubular plunger (18) whereof a toothed edge (20) extends to substantially radially inwards of the flange (16), or (ii) an external surface of a container formed with a partial-depth cut encircled by the surface portion (26), the heating device comprising an annular heat-emitting arrangement of nozzles (4) for locating substantially co-axially of the flange (16) or the cut and serving to direct heating medium (6) obliquely outwardly to impinge upon the outwardly facing surface portion (26) rather than upon the toothed edge (20) or the cut.

Description

IMPROVEMENTS IN OR RELATING TO HEATING DEVICES AND METHODS
This invention relates to a heating device for heating an outwardly facing surface portion of a flange of a pour spout fitment, or of an external surface of a container, and to a method of heating that surface portion.
It is well known to render tacky an axially outwardly facing, annular surface portion of a flange of a plastics pour spout fitment and/or an annular portion of an external surface of an external plastics coating of a wall of a carton, by heating the same in any one of a variety of ways, one of which is by hot air. That annular portion of the external surface of the coating encircles, in one case, a pouring hole, or in another case, the location of an intended pouring hole (which may be bounded by a partial depth cut) through the wall. The subsequent bringing together of the annular surface portion of the flange and the annular portion of the external surface of the coating results in firm sealing of the fitment to the wall. In the other case mentioned above, it is also known for the fitment to include a plunger which has a sharp, often toothed, often annular, inner end which pieces through the above-mentioned location to form the hole, upon rotating of a screw cap of the fitment, or upon manual pressing inwards of the plunger.
WO2009140744 A1 discloses an apparatus for welding, to the inside surface of a tube body, bottle body, or box body, an axially inner rim of a head incorporating an externally threaded pour spout. During the welding operation, that end zone of the body receiving the head is curved inwards onto an outer annular part of the external surface of the head. The apparatus serves to improve the quality of the weld and gives low reject percentages. It has a mandrel on which the head and the body are placed, as well as a cooling element and a nozzle both coaxial with the mandrel. The nozzle comprises two tubular parts - internal and external - which form between them a channel for feeding heating gas. The channel is co-axial with the mandrel and diverges outwardly in the direction of the mandrel so as to heat the head and foil of the body in an annular recess between the head and the aforementioned end zone of the body before that end zone is curved inwards and applied to the head. The apparatus consists of only one work station. The cooling element serves also as a forming element for that end zone and consists of a cooling metal ring located in a forming metal ring. There is a heat-insulating ring between the latter and the cooling metal ring. In the condition of heating, the heat-insulating ring encircles that end zone.
US3783029A discloses an adaptor for a flameless heat tool and comprising a housing defining an outwardly diverging interior chamber and detachably mountable over the exit nozzle of the tool. Supported within the chamber is a baffle member for establishing an annularly shaped outwardly diverging flow of the heated compressed air exiting from the nozzle and the chamber. The baffle includes a part axially extending from the chamber and beyond the housing, which part is adapted to extend into and close a work surface opening whereby the annularly shaped flow of hot air exiting from the housing is directed against an annular portion of the work surface surrounding the opening and heat is excluded from the opening. The adaptor is especially useful in connection with flameless heat tools for applying heat-melt fasteners to laminated panels. Such fastener may comprise an externally flanged, internally threaded, hollow metal tube closely receiving externally a complementary, externally flanged, hollow plastics ring whereby the metal tube is adhered to the panel.
According to one aspect of the present invention, there is provided a heating device for heating an annular, outwardly facing surface portion of (i) a flange of a pour spout fitment comprising a flanged pour spout whereof the flange is to be sealingly applied to an external surface of a container, and a toothed, tubular plunger whereof a toothed edge extends to substantially radially inwards of said flange, or (ii) an external surface of a container formed with a partial-depth cut encircled by said surface portion, said heating device comprising an annular heat-emitting arrangement for locating substantially co- axially of said flange or said cut and serving to direct heating medium obliquely outwardly to impinge upon said outwardly facing surface portion rather than upon said toothed edge or said cut.
According to a second aspect of the present invention, there is provided a method comprising heating an annular, outwardly facing surface portion of (i) a flange of a pour spout fitment whereof a toothed, tubular plunger has a toothed edge which extends to substantially radially inwards of said flange, or (ii) an external surface of a container formed with a partial-depth cut encircled by said surface portion, said method comprising directing heating medium obliquely outwardly to impinge upon said outwardly facing surface portion rather than upon said toothed edge or said cut.
Owing to the invention, it is possible relatively to reduce heating of the toothed edge of the plunger, which might distort or otherwise damage the same and thereby render it less suited to cutting through the packaging material of a container to which the fitment is to be attached, or, where there is a barrier foil closing the inner end of the pour spout, cutting through that foil. It is also possible relatively to reduce heating of one or more barrier layers beneath the cut, which might otherwise damage the barrier layer(s) and thereby reduce the barrier effect. The cut may be in the form of a closed loop, in particular a circle, but is preferably an open loop.
There may be provided two such heating devices, one for the surface portion of the flange and the other for the surface portion of the container.
In order that the invention may be clearly and completely disclosed, reference will now be made, by way of example, to the accompanying drawings, in which:-
Figure 1 shows an axial section through a heating device heating an outwardly facing surface of a flange of a pour spout fitment;
Figure 2 shows an axial section through a heating device heating an external surface of a container; and
Figure 3 is a perspective view of the device of Figure 2.
Referring to Figure 1 , the heating device comprises a supply of hot air (not shown) and a nozzle 2 of circular cross-section with a hot air outlet in the form of a ring of holes 4 co-axial with the nozzle. The holes 4 each extend in an axial plane of the nozzle 2 and are directed obliquely outwardly, so as to emit jets of hot air, as indicated by the arrows 6. Thermoplastics pour spout fitments which are identical to each other and of which one is shown and referenced 8 are presented one after another to the nozzle 2 so as to be located substantially co-axially with the nozzle. Each pour spout fitment consists of three parts, namely a screw cap 10 with a tamper-evident band 12, a pour spout 14 with an annular flange 16, and a tubular plunger 18 with a toothed cutting edge 20 with teeth 22 of which points are located substantially radially inwards of the flange 16. Upon unscrewing of the cap 10, driving projections thereon engage with abutments on the plunger 18 to cause the same to turn about the axis of the fitment 8 and, owing to helical threading 24 between the plunger 18 and the pour spout 14, to cause the plunger to advance helically so that the teeth 22 pierce packaging material of a carton to which the fitment 8 has been applied. In order to attach the fitment 8 to the carton, the outwardly facing annular surface 26 of the flange 16 is first rendered tacky by application of the hot air jets 6 thereto, as shown in the Figure. As can clearly be seen from the Figure, owing to the obliquity of the jets 6, the hot air tends not to reach the teeth 22, so avoiding heating of the thermoplastics teeth, which would tend to distort them, thus to make them less sharp, with the disadvantage of reducing the cutting performance of the teeth on the packaging material.
Referring to Figure 2, the heating device again comprises a supply of hot air (not shown), with a nozzle 32 of circular cross-section with a hot air outlet in the form of a ring of holes 34 co-axial with the nozzle. Again, the holes 34 each extend in an axial plane of the nozzle 32 and are directed obliquely outwardly, so as to emit jets of hot air, as indicated by the arrows 36. Substantially rectangular, inclined, roof sub-panels which are identical to each other and of which one is shown fragmentarily and referenced 38 and which belong to respective gable-topped cartons are presented one after another to the nozzle 32 so that respective open-loop-form, partial-depth cuts of which one is seen and referenced 40 are located substantially co-axially with the nozzle 32. In the instance shown, the gable-topped carton has been made from a laminate consisting of innermost and outermost, thermoplastics, moisture barrier layers 42 and 44 of, for example, low density polyethylene (LDPE). Sandwiched between those layers is a paperboard substrate 46 and an oxygen barrier layer 48 of, for example, ethylene vinyl alcohol (EVOH). The nozzle 32 has a flange 50 formed with through holes 52 whereby the nozzle 32 may be fixed in position. Prior to attaching the fitment 8 to the sub-panel 38, an external annular surface portion of the sub-panel 38 encircling the partial-depth cut 40 is first rendered tacky by application of the hot air jets 7 thereto, as shown in Figure 2. As can clearly be seen from the Figure, owing to the obliquity of the jets 36, the hot air tends not to reach the partial depth cut 40, so avoiding heating of the parts of the layers 44 and 48 therebeneath, which would tend to damage those parts, if not burn holes therethrough.

Claims

A heating device for heating an annular, outwardly facing surface portion of (i) a flange of a pour spout fitment comprising a flanged pour spout whereof the flange is to be sealingly applied to an external surface of a container, and a toothed, tubular plunger whereof a toothed edge extends to substantially radially inwards of said flange, or (ii) an external surface of a container formed with a partial-depth cut encircled by said surface portion, said heating device comprising an annular heat-emitting arrangement for locating substantially co-axially of said flange or said cut and serving to direct heating medium obliquely outwardly to impinge upon said outwardly facing surface portion rather than upon said toothed edge or said cut.
A device according to claim 1 , wherein said arrangement comprises a ring of nozzles for emitting hot gas as said heating medium.
A method comprising heating an annular, outwardly facing surface portion of (i) a flange of a pour spout fitment whereof a toothed, tubular plunger has a toothed edge which extends to substantially radially inwards of said flange, or (ii) an external surface of a container formed with a partial-depth cut encircled by said surface portion, said method comprising directing heating medium obliquely outwardly to impinge upon said outwardly facing surface portion rather than upon said toothed edge or said cut.
A method according to claim 3, wherein said heating medium comprises hot gas.
PCT/GB2010/002318 2009-12-23 2010-12-21 Improvements in or relating to heating devices and methods Ceased WO2011077091A1 (en)

Priority Applications (1)

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GBGB0922490.8A GB0922490D0 (en) 2009-12-23 2009-12-23 Improvements in or relating to heating devices and methods

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CN108602582A (en) * 2016-03-10 2018-09-28 利乐拉瓦尔集团及财务有限公司 Method to be attached to the ducted body of packaging and for producing the ducted body
WO2018172758A3 (en) * 2017-03-20 2018-11-01 Biome Bioplastics Limited Heating apparatus, system and method for producing beverage capsules
US11697898B2 (en) 2017-03-10 2023-07-11 Biome Bioplastics Limited Fabric

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US3783029A (en) 1970-09-21 1974-01-01 Trw Inc Self-erecting and rigidizing deployable panel and panel assembly
US3873029A (en) * 1973-11-12 1975-03-25 Amerace Corp Adaptor for flameless heat tools
DE3442187A1 (en) * 1984-03-16 1986-05-28 Haver & Boecker, 4740 Oelde Device for closing the valve of a bag filled by means of a filling machine
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EP1081054A1 (en) * 1999-08-27 2001-03-07 Tetra Laval Holdings & Finance SA Method of fitting closable opening devices to respective sealed packages for pourable food products, and packages featuring such devices
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WO2009140744A1 (en) 2008-05-23 2009-11-26 Sts Pack Holding Ltd. An assembly for head welding

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CN108602582A (en) * 2016-03-10 2018-09-28 利乐拉瓦尔集团及财务有限公司 Method to be attached to the ducted body of packaging and for producing the ducted body
CN108602582B (en) * 2016-03-10 2021-06-22 利乐拉瓦尔集团及财务有限公司 Hollow body to be attached to packaging and method for producing said hollow body
US11697898B2 (en) 2017-03-10 2023-07-11 Biome Bioplastics Limited Fabric
WO2018172758A3 (en) * 2017-03-20 2018-11-01 Biome Bioplastics Limited Heating apparatus, system and method for producing beverage capsules
US11712821B2 (en) 2017-03-20 2023-08-01 Biome Bioplastics Limited Heating apparatus, system and method for producing beverage capsules

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