US3690803A - Apparatus for closing a filled synthetic material container - Google Patents

Apparatus for closing a filled synthetic material container Download PDF

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Publication number
US3690803A
US3690803A US48376A US3690803DA US3690803A US 3690803 A US3690803 A US 3690803A US 48376 A US48376 A US 48376A US 3690803D A US3690803D A US 3690803DA US 3690803 A US3690803 A US 3690803A
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United States
Prior art keywords
closing
head
clamping
segments
container
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Expired - Lifetime
Application number
US48376A
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English (en)
Inventor
Heinz Pechtold
Gerhard Gold
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.)
PMD Entwicklungswerk fur Kunststoff Maschinen GmbH and Co KG
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PMD Entwicklungswerk fur Kunststoff Maschinen GmbH and Co KG
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    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • B29C49/4802—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity
    • B29C49/4817—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity with means for closing off parison ends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/04—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied
    • B65B31/06—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied the nozzle being arranged for insertion into, and withdrawal from, the mouth of a filled container and operating in conjunction with means for sealing the container mouth

Definitions

  • the upper contain r s tion is formed to a head 51 Int. Cl ..B29c 17/07 y means of a head mold i h ping edges in i clos- [58] Field of Search ..53/39-43,140;- ing Position An additional Pressure medium is fed 18/5 B, 5 F, 5 BE, 5 BZ, 5 BB, 5 BM, 42 D, 42 J, 42 RR; 425/326, 387
  • the present invention relates to a method of and an apparatus for closing a filled container of synthetic material, which is produced of a form piece widened in the formable state in a' forming tool and filled, whereupon a segmented head mold, movable into an openor closing position, with pinge edges in its closed position forms the upper container-section to a head and closes the container airtight.
  • the head section of the container and of the form piece, respectively, while still in its formable state is formed and welded to a head by application of vacuum in the head mold.
  • This has the drawback, that depending upon the type of the filling material and correspondingly at the time of the welding process mostly pressure below atmospheric pressure, at its best, however, atmospheric pressure, occurs, because the worked and heated filling material admixes itself during cooling with the air enclosed in the container.
  • the forming of the container head does not take place in a perfect manner. It is to be added, that the apparatus required therefor, in particular its vacuum pump and vacuum molds, is very expenslve.
  • lt is another object of the present invention to provide a method of and an apparatus for closing a filled container of synthetic material, wherein between the pressure filling process and the airtight closing of the container a predetermined pressure above atmospheric pressure is produced in the container by addition of impressing of a pressure medium, by example air, carbonic acid and the like.
  • a pressure medium by example air, carbonic acid and the like.
  • the pressure in the container more or less balanced out with the atmosphere can be brought once more to a predetermined height prior to its closing during the filling process.
  • the method step according to the present invention takes place in such manner, that after the pressure filling process the upper container section, which is still in its own heat, within the range of the pinch edges of the head mild, which are at first partly still open are clamped together safe for an inlet channel, whereupon the pressure medium is pressed into the container through this channel and thereafter the container is closed by complete closing of the head mold.
  • FIG. 1 is an elevation, partly in section, of the essential parts of the forming tools for the production and closing of a bottle-like container from a hose-shaped form piece and a driving device for the head mold segments:
  • FIG. 2 is a top planview of the head mold with three clamping claws in the open position
  • FIG. 3 is a top plan view onto the head mold as shown in FIG. 2, yet theclampingclaws being in their clamping position;
  • FIGS. 4-7 are a fragmentary elevation, partly in section, of the showing of FIG. 1 with the head mold and the clamping claws in different working positions.
  • thermoplastic hose material which in the formable state is widened in a forming tool in the so-called pressure filling process and filled with liquid filling material, whereupon a head mold consisting of two compressible segments force the upper hose section to a bottle-head and which welds airtight by pinging together the hose wall, is known per se and for this reason not shown in the drawing.
  • the previously mentioned machine has a forming tool 10, in which in known manner a hose-shaped forming piece inserted in known manner from an extruder (not shown) is formed to a container 11 and simultaneously filled with a liquid filling material.
  • a head mold l2 sits on this forming tool 10, which head mold 12 consistsof two segments 12a and 12b, which are movable from an open position, shown in FIG. 2, relatively into a closing position, shown in FIG. 1. Both segments have pinch edges 12c and 12d surrounding a head mold-hollow chamber 13, which pinch edges are disposed tightly toward each other in the closing position of the head mold segments (FIG. 1) in the vertical center plane M of the forming tools. They have the task, to pinch together and to weld together above the formed container head, the wall of the forming piece which still has its own heat.
  • Two clamping claws l4 and 15 are mounted for movement towards each other on the segments 12a and 12b in guides 12e and 12f. On the longitudinal edges 14a and 15a of both clamping claws pointing away from the vertical center plane M of the forming tools,
  • pressure springs 16 anchored in the head mold-segments obtain a grip, which pressure springs 16 have the tendency to retain the clamping claws with a spring force directed towards each other in a position, in which the longitudinal edges 14b and 15b of the clamping claws which point to the vertical center plane M of the forming tools stand beyond the pinch edges 12c and 12d of the head mold-segments. From the head moldsegments extend abutment pins 17 and 18 in slots 14c and 15c of the clamping claws and limit their movement, influenced by the described pressure springs 16, in the direction toward the vertical center axis M.
  • the longitudinal edges 14b and 15b of the clamping jaws 14 and 15 pointing towards each other are formed to clamping edges and have in the center thereof semi circular cutouts 14d and 15d, corresponding with each other, which in case of engaging clamping edges form a vertical extending passage hole.
  • the movement of the head mold-segments 12a and 12b from their open position into their closed position and vice versa is performed from a schematically shown hydraulic driving device (FIG. 1), indicating only its essential parts.
  • a pressure cylinder 19 To each of both segments is coordinated a pressure cylinder 19 with two pistons 20 and 21 shiftable into a plurality of positions, and the piston rods 20a and 21a of the pistons 20 and 21 project towards one of the opposite disposed end sides of the pressure cylinder.
  • the one piston rod 20a projecting from the pressure cylinder on the side remote from the head mold 12 is immovably secured by screwing in of the threaded part of the piston rod into a threaded bore of an immovable part 22 of the machine, while the pressure cylinder 19 itself and the second piston rod 210 connected with the corresponding head mold-segment are displaceable in the longitudinal direction.
  • the pressure conduits for the pressure liquid are only partly shown in FIG. 1, of which the pressure conduits 23 and 24 are coordinated to one piston 20 and the pressure conduits 25 and 26 are coordinated to the other piston 21.
  • the piston rod 20a secured to the machine parts 22 is adjustable in longitudinal direction and is secured by a lock nut 27. With this piston rod 20a the pressure cylinder 19 and by means of the second piston rod 21a, the head mold-segment is fixed in its position convenient for the closing position.
  • the driving device for head mold-segments 12a and 12b can be operated hydraulically, as well as pneumatically and also mechanically.
  • the operation of the apparatus of the present invention takes place in the following manner:
  • FIG. 4 shows the working position of the forming tools, after a hose shaped forming piece is formed in the closed forming tool under pressure to a bottleshaped container 11 and has been filled with a liquid filling material.
  • Vacuum half-dishes 28 are disposed above the head mold 12, which vacuum half-dishes 28 keep strictly open the upper, still unformed section of the container.
  • both pistons 20 and 21 are pushed up to the separating wall 19a of the two pressure cylinders 19.
  • pressure fluid is pressed into the pressure cylinders 19 by means of the pressure conduits 23 and 26, so that both pistons 20 and 21 are pressed again in the direction towards the cylinder-separation wall 19a, and thereby the head mold-segments are moved in the direction of the arrows shown in FIG. 7.
  • the vacuum-dishes 28 and the forming tool 10 is opened in the direction of the arrows, whereupon the filled and airtight closed container 11 can be removed from the mold.
  • An apparatus for closing a filled container of synthetic material comprising a forming tool
  • a head mold disposed on said forming tool, and comprising two segments
  • said segments having pinch edges surrounding a chamber defined by said head mold
  • said clamping claws having in their clamping position engaging clamping edges with at least one passage hole cut-out perpendicularly to their longitudinal plane, and are movable such, that they arrive at their clamping position timely before said pinch edges of said head molds arrive at their closing position,
  • a driving device moving said head mold in at least two steps from the open position into the closing position, and including an abutment means
  • said abutment means limiting the first movement step after the partly closing of said head mold
  • said driving device comprising at least one pressure cylinder with two pistons reciprocating therein and movable into a plurality of positions
  • one of said pistons driving said first movement step and being adjustable relative to an immovable part of the apparatus in the direction of the closing movement'of said head mold.
  • An apparatus for closing a filled container of synthetic material produced from a forming piece expanded in its deformable state by pressure and filled up in a forming tool comprising a forming tool, including means for forming a head and for air-tight closing of said container, comprising, segments of a head form with pinch edges,
  • a separated driving means for moving said segments of a head form, independently from said forming tool, into an open position or closed position, respectively,
  • said driving means for said segments of said head form moving said clamping claws relative to each other into a clamping position closing said filled container, and 5 said clamping claws having clamping edges engaging in said clamping position, and extending in a direction toward a vertical center plane of said head form and over said pinch edges of said segments and closing said container having a still open head form up to a narrow inlet channel, the latter being formed by a passage hole cut out in said clamping edges, respectively, of said clamping claws.
  • the apparatus as set forth in claim 2, further comprising spring means for maintaining said clamping claws, in said open position of said head form, projecting beyond said pinch edges, said driving means moving said segments of said head form in at least a first and second moving step from said open position into said closed position, and said driving means including operative abutments for limiting said first moving step after a partial closing of said head form and said clamping edges engaging at the same time.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Basic Packing Technique (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
US48376A 1969-06-23 1970-06-22 Apparatus for closing a filled synthetic material container Expired - Lifetime US3690803A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691931710 DE1931710A1 (de) 1969-06-23 1969-06-23 Verfahren und Vorrichtung zum Verschliessen eines abgefuellten Kunststoff-Behaelters

Publications (1)

Publication Number Publication Date
US3690803A true US3690803A (en) 1972-09-12

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Family Applications (1)

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US48376A Expired - Lifetime US3690803A (en) 1969-06-23 1970-06-22 Apparatus for closing a filled synthetic material container

Country Status (7)

Country Link
US (1) US3690803A (enrdf_load_stackoverflow)
JP (1) JPS4929268B1 (enrdf_load_stackoverflow)
CA (1) CA921002A (enrdf_load_stackoverflow)
CH (1) CH502229A (enrdf_load_stackoverflow)
DE (1) DE1931710A1 (enrdf_load_stackoverflow)
FR (1) FR2047027B1 (enrdf_load_stackoverflow)
GB (1) GB1252879A (enrdf_load_stackoverflow)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3728063A (en) * 1971-04-23 1973-04-17 E Langecker Blowing machine for producing hollow bodies, particularly bottles
US3861846A (en) * 1972-09-21 1975-01-21 Remy & Cie E P Moulds for manufacturing through extrusion-blowing of sealed containers made from plastics material
US3911071A (en) * 1972-11-20 1975-10-07 Pmd Entwicklungswerk Method of production of a bottle-shaped container, filled, sealed and ready for shipment
US4027726A (en) * 1974-06-10 1977-06-07 Fritz Hodler Pressure die-casting block with a venting valve
US4054017A (en) * 1972-11-20 1977-10-18 Pmd Entwicklungswerk Fur Kunststoff-Maschinen Gmbh & Co. Kg. Apparatus for production of a bottle-shaped container, filled, sealed and ready for shipment
US4560341A (en) * 1982-02-16 1985-12-24 Hoover Universal, Inc. Apparatus for transporting sectional molds
US4596110A (en) * 1981-08-26 1986-06-24 Automatic Liquid Packaging, Inc. Container with insert having a fully or partially encapsulating seal with a frangible web formed against said insert
US4699748A (en) * 1982-08-03 1987-10-13 Automatic Liquid Packaging, Inc. Container with insert having a fully or partially encapsulating seal with a frangible web formed against said insert
US4707966A (en) * 1981-08-26 1987-11-24 Automatic Liquid Packaging, Inc. Container with an encapsulated top insert and method and apparatus for making same
US4757907A (en) * 1980-09-09 1988-07-19 Gerhard Hansen Process for producing a heat-sealable container and product thereof
US4821897A (en) * 1981-08-26 1989-04-18 Automatic Liquid Packaging, Inc. Container with insert having a fully or partially encapsulating seal with a frangible web formed against said insert
US4901873A (en) * 1982-08-03 1990-02-20 Automatic Liquid Packaging, Inc. Container with insert having a fully or partially encapsulating seal with a frangible web formed against said insert
US4905450A (en) * 1987-06-27 1990-03-06 Hansen Gerhard Process and apparatus for filling and sealing a container, and a container made thereby
US4926613A (en) * 1988-10-07 1990-05-22 Bernd Hansen Process for filling and subsequent fusion welding of receptacles
US5054267A (en) * 1990-08-06 1991-10-08 Graham Engineering Corporation Apparatus sealing blow molded bottle
US5054272A (en) * 1990-08-06 1991-10-08 Graham Engineering Corporation Method for sealing blow molded bottle
US5481853A (en) * 1993-12-23 1996-01-09 Kraft Foods, Inc. Beverage container with bottom cavity
WO1997048313A1 (en) * 1996-06-19 1997-12-24 Jan Dranger Method for producing a furniture element and such an element
US9447610B2 (en) 2013-09-16 2016-09-20 Hampton Products International Corporation Lockset operable by pivoting actuator about a first axis or a second axis

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54142372A (en) * 1978-04-26 1979-11-06 Teijin Ltd Summer carpet
DE2912923C2 (de) * 1979-03-31 1984-07-26 Roland Prof. Dr. 4400 Münster Szostak Gerät zur modellmäßigen Darstellung der jahreszeitlichen Wirkung der Sonnenbestrahlung auf der Erde
DE3228332A1 (de) * 1981-08-13 1983-03-03 Automa S.p.A., Crespellano, Bologna Verfahren zur herstellung eines duennwandigen kunstharzbehaelters und danach hergestellter kunstharzbehaelter
DE4035635C1 (en) * 1990-11-09 1992-05-07 Juergen Dr. 2302 Flintbek De Newig Planetarium mechanism with arm rotatable about socket - has circular disc and gnomon insertable at any globe point
GB2446383A (en) * 2007-02-12 2008-08-13 Inbev Sa Blow moulded thermoplastics containers

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA627018A (en) * 1961-09-05 Owens-Illinois Glass Company Guiding means for plastic tubing
US3079631A (en) * 1960-03-30 1963-03-05 Owens Illinois Glass Co Method and apparatus for forming hollow plastic articles
US3538543A (en) * 1965-03-24 1970-11-10 Paul Nataf Shell mould for manufacturing hollow plastic mouldings

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA627018A (en) * 1961-09-05 Owens-Illinois Glass Company Guiding means for plastic tubing
US3079631A (en) * 1960-03-30 1963-03-05 Owens Illinois Glass Co Method and apparatus for forming hollow plastic articles
US3538543A (en) * 1965-03-24 1970-11-10 Paul Nataf Shell mould for manufacturing hollow plastic mouldings

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3728063A (en) * 1971-04-23 1973-04-17 E Langecker Blowing machine for producing hollow bodies, particularly bottles
US3861846A (en) * 1972-09-21 1975-01-21 Remy & Cie E P Moulds for manufacturing through extrusion-blowing of sealed containers made from plastics material
US3911071A (en) * 1972-11-20 1975-10-07 Pmd Entwicklungswerk Method of production of a bottle-shaped container, filled, sealed and ready for shipment
US4054017A (en) * 1972-11-20 1977-10-18 Pmd Entwicklungswerk Fur Kunststoff-Maschinen Gmbh & Co. Kg. Apparatus for production of a bottle-shaped container, filled, sealed and ready for shipment
US4027726A (en) * 1974-06-10 1977-06-07 Fritz Hodler Pressure die-casting block with a venting valve
US4790117A (en) * 1980-09-09 1988-12-13 Gerhard Hansen Method of molding, filling and sealing a container
US4757907A (en) * 1980-09-09 1988-07-19 Gerhard Hansen Process for producing a heat-sealable container and product thereof
US4596110A (en) * 1981-08-26 1986-06-24 Automatic Liquid Packaging, Inc. Container with insert having a fully or partially encapsulating seal with a frangible web formed against said insert
US4821897A (en) * 1981-08-26 1989-04-18 Automatic Liquid Packaging, Inc. Container with insert having a fully or partially encapsulating seal with a frangible web formed against said insert
US4707966A (en) * 1981-08-26 1987-11-24 Automatic Liquid Packaging, Inc. Container with an encapsulated top insert and method and apparatus for making same
US4560341A (en) * 1982-02-16 1985-12-24 Hoover Universal, Inc. Apparatus for transporting sectional molds
US4699748A (en) * 1982-08-03 1987-10-13 Automatic Liquid Packaging, Inc. Container with insert having a fully or partially encapsulating seal with a frangible web formed against said insert
US4901873A (en) * 1982-08-03 1990-02-20 Automatic Liquid Packaging, Inc. Container with insert having a fully or partially encapsulating seal with a frangible web formed against said insert
US4905450A (en) * 1987-06-27 1990-03-06 Hansen Gerhard Process and apparatus for filling and sealing a container, and a container made thereby
US4926613A (en) * 1988-10-07 1990-05-22 Bernd Hansen Process for filling and subsequent fusion welding of receptacles
US5054267A (en) * 1990-08-06 1991-10-08 Graham Engineering Corporation Apparatus sealing blow molded bottle
US5054272A (en) * 1990-08-06 1991-10-08 Graham Engineering Corporation Method for sealing blow molded bottle
AU634899B2 (en) * 1990-08-06 1993-03-04 Graham Engineering Corporation Apparatus for sealing blow molded bottle
US5481853A (en) * 1993-12-23 1996-01-09 Kraft Foods, Inc. Beverage container with bottom cavity
WO1997048313A1 (en) * 1996-06-19 1997-12-24 Jan Dranger Method for producing a furniture element and such an element
US6399015B1 (en) 1996-06-19 2002-06-04 Jan Dranger Method for producing a furniture element and such an element
US9447610B2 (en) 2013-09-16 2016-09-20 Hampton Products International Corporation Lockset operable by pivoting actuator about a first axis or a second axis

Also Published As

Publication number Publication date
FR2047027B1 (enrdf_load_stackoverflow) 1973-01-12
CA921002A (en) 1973-02-13
JPS4929268B1 (enrdf_load_stackoverflow) 1974-08-02
DE1931710A1 (de) 1971-01-21
CH502229A (de) 1971-01-31
GB1252879A (enrdf_load_stackoverflow) 1971-11-10
FR2047027A1 (enrdf_load_stackoverflow) 1971-03-12

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