USRE39769E1 - Blow molding device for producing thermoplastic containers - Google Patents

Blow molding device for producing thermoplastic containers Download PDF

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Publication number
USRE39769E1
USRE39769E1 US09/553,413 US55341396A USRE39769E US RE39769 E1 USRE39769 E1 US RE39769E1 US 55341396 A US55341396 A US 55341396A US RE39769 E USRE39769 E US RE39769E
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US
United States
Prior art keywords
mold
shell
quick
holder
locking member
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 - Lifetime
Application number
US09/553,413
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English (en)
Inventor
Dominique Briere
Léon Coisy
Paul La Barre
Pascal Santais
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.)
Sidel SA
Original Assignee
Sidel SA
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Filing date
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Application filed by Sidel SA filed Critical Sidel SA
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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
    • 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
    • B29C49/4823—Moulds with incorporated heating or cooling means
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/30—Mounting, exchanging or centering
    • B29C33/305—Mounting of moulds or mould support plates
    • 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
    • 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
    • B29C2049/4856—Mounting, exchanging or centering moulds or 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
    • 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
    • B29C2049/4856—Mounting, exchanging or centering moulds or parts thereof
    • B29C2049/4864—Fixed by a special construction to the mould half carriers, e.g. using insulating material between the mould and the mould half carrier
    • 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
    • B29C2049/4879—Moulds characterised by mould configurations
    • B29C2049/4892—Mould halves consisting of an independent main and bottom part
    • 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
    • B29C49/56—Opening, closing or clamping means
    • B29C2049/566—Locking means
    • B29C2049/5661—Mechanical
    • B29C2049/5664—Translating locking pin
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/20—Opening, closing or clamping
    • B29C33/26—Opening, closing or clamping by pivotal movement
    • 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
    • B29C49/08—Biaxial stretching during blow-moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material

Definitions

  • the present invention relates to improvements made to devices making it possible to manufacture containers, in particular bottles, made of a thermoplastic by blow molding or stretch-blow molding of a preheated preform, the said device including at least one mold consisting of two half-molds respectively supported by two mold carriers which can move one with respect to the other.
  • half-molds It is common practice for the half-molds to be removably fixed to the respective mold carriers so that the said half-molds can be replaced or changed should they become damaged and/or worn and, above all, should containers of different shapes and/or sizes be manufactured, without it being necessary to replace the entire molding device.
  • each half-mold is heavy (for example about 25 to 30 kg for a steel mold): the fixing means must be able to support this weight and comprise many nut-and-bolt and/or screw connections; furthermore, each half-mold must be handled by several people and/or by means of a hoist, thereby requiring a suitable installation above the manufacturing device.
  • Each half-mold is equipped with means for the circulation of one or more fluids for the cooling and/or heating of the walls of the impression: replacing each half-mold is accompanied by disconnecting, followed by reconnecting, of the corresponding fluid connections, all operations requiring time.
  • each half-mold It is also necessary to add an economic consideration regarding the actual construction of each half-mold.
  • the impression serving for pressure molding the final container must have a perfectly polished surface finish, to which, furthermore, the hot thermoplastic must not adhere: it is therefore necessary for the impression to be made of a suitable metallic material (for example stainless steel) which, moreover, may differ depending on the thermoplastic employed.
  • a suitable metallic material for example stainless steel
  • the object of the invention is therefore essentially to remedy, as far as is possible, the drawbacks of the currently known manufacturing devices and to provide an improved device which allows quick and simple changing of the molding impressions in order to make it easier to adapt the device to the manufacture of various containers, and the improved structure of which device is, at the end of the day, less expensive than that of the current devices while still maintaining the same strength and non-deformability properties.
  • each half-mold comprises a shell holder supported by the respective mold carrier and a shell which is provided with a half-impression of the container to be obtained and which can be removably fastened to its shell holder by quick-fixing means, the shell and the shell holder being of complementary shapes in order to be in at least partial mutual contact, with thermal conduction, while the pipes and connections for the circulation of cooling and/or heating fluids, and optionally the members for guiding the half-molds in order to close the mold, as well as the pressure-compensating means for maintaining the sealed closure of the mold during blow molding, are provided exclusively in the shell holder.
  • the part of the half-mold corresponding to the impression which may be economically made of a suitable and relatively expensive material
  • the rear part of the half-mold which provides rigidity and mechanical strength and which may be made of a more ordinary and less expensive material (for example a standard aluminum alloy)
  • this rear part has less inertia, thereby contributing to facilitating the rotational movements of the half-molds.
  • the mutually contacting mating faces of the shell and of the shell holder are approximately semicylindrical surfaces of revolution with an axis approximately parallel to the axis of the impression of the container to be manufactured; it is thus easier to produce mutually-contacting mating faces which ensure heat transfer as close as possible to that of a monobloc structure, something which may furthermore be obtained by providing for the shell and the shell holder to be in total thermal-conduction contact.
  • the arrangement according to the invention also provides the possibility of ensuring, when this proves to be desirable, that the shell and the shell holder are in partial thermal-conduction contact by leaving regions of limited thermal conduction, which also constitutes another means of creating, in the wall of the impression, regions with differentiated temperature settings.
  • the said axial mutual-positioning means comprise a system of one or more mating ribs and grooves extending circumferentially, which arrangement, in combination with the aforementioned semicylindrical configuration of the said mating faces of the Shell and of the shell holder, allows very simple assembly, with very precise positioning of the shell, using simplified fixing means.
  • the means for quickly fixing the shell to the shell holder are provided on their respective parting faces.
  • the said fixing means are located on the respective edges of the shell and of the half-shell, these being parallel to the axis of the impression; it is then desirable for the quick-fixing means to comprise, on one side, at least one stop for positioning the parting face of the shell with respect to the parting face of the shell holder and, on the other side, quick-screwing means on the parting face of the shell holder with a clamping surface projecting from the parting face of the shell, by virtue of which the shell is put into place on and locked onto the shell holder by curvilinear sliding of the shell, guided by the rib(s)/groove(s) system, in the cradle formed by the shell holder.
  • the time to replace a pair of shells is about 8 minutes while the time to replace a pair of half-shells in a prior device is about 20 minutes, using appropriate handling equipment.
  • FIG. 1 is a diagrammatic view from above of part of a molding device designed in accordance with the invention
  • FIG. 2 is a front view of a two-piece half-mold of the device in FIG. 1 ;
  • FIG. 3 is a view from below of a half-mold in FIG. 2 .
  • FIG. 4 is a view from left, partially cutaway, of the device of FIG. 1 .
  • FIG. 1 shows part of a device for manufacturing containers, in particular bottles, made of a thermoplastic such as polyethylene terephthalate PET, polyethylene apththalate PEN or another material, as well as alloys or blends thereof, by blow molding or stretch-blow molding a preheated preform.
  • a thermoplastic such as polyethylene terephthalate PET, polyethylene apththalate PEN or another material, as well as alloys or blends thereof, by blow molding or stretch-blow molding a preheated preform.
  • This device includes at least one mold 1 consisting of two half-molds 2 respectively supported by two mold carriers 3 which can move one with respect to the other.
  • the two mold carriers 3 are made in the form of two enveloping structures pivotally mounted on a common rotation axis 4 in such a way that the two half-molds can move apart by pivoting (a socalled “jackknife” structure).
  • the mold carriers may be driven, in order to open and close the mold, in a conventional manner using a system of traction arms pivoted at 5 to the respective mold carriers a certain distance from the axis 4 of the latter.
  • Locking means denoted in their entirety by 6 , lock the two half-molds in the closed, molding position.
  • each half-mold is made in the form of two subassemblies, namely a shell 7 provided with a half-impression 8 of the container to be manufactured and a shell holder 9 which supports the shell 7 and which is itself fastened to the corresponding mold carrier 2 .
  • Each shell holder 9 may be considered as corresponding externally, in shape and size, to the mold carrier of the previous structures and it may therefore be fastened to the respective mold carrier 3 in the same manner, for example by a nut-and-bolt connection 10 , it being possible for the number and disposition of the holes and internal threads to be identical to those of the previous arrangements.
  • each shell holder is provided with internal pipes 11 and with fittings 12 which are necessary for the circulation of at least one fluid for cooling or heating the wall of the impression.
  • Any number of these pipes and fittings may be provided and they may, for example, be independent of each other so as subsequently to allow them complete freedom, by externally connecting them appropriately, to constitute circuits of various and/or independent configurations depending on the type of containers to be produced and the type of material employed.
  • the shell holder 9 Because of the fact that the impression 8 is physically separated from the shell holder 9 , it is possible to make the latter from a less special material, for example an ordinary aluminum alloy, even when the shell is made of steel, thereby making it possible, here too, to reduce its cost; in addition, the shell holder 9 thus produced is lighter than a steel shell holder, which desirably decreases its inertia and has a favorable effect on the dynamic operation of the mold.
  • Each shell 7 has a half-impression 8 of the final container, hollowed out in its parting face 13 .
  • the external face 14 of each shell 7 has the general shape of a semicylinder of revolution, the axis of which is approximately parallel to the axis of the impression 8 of the container; in practice, the impression is coaxial with the semicylinder.
  • the shell 7 rests in a cradle 15 of complementary shape cut out in the shell holder 9 .
  • the shapes of the shell and shell holder are perfectly matched and they are thus in as close a contact as possible.
  • the said mating faces 14 and 15 are only partially in thermal-conduction contact, with provision of regions of limited thermal conduction; it is thus possible to produce differentiated temperature settings in the wall of the impression.
  • the shells are made from a suitable material, for example stainless steel.
  • the shapes of the mating parts of the shell holder 9 and the shell 7 it is necessary to choose materials exhibiting thermal expansion coefficients which are substantially identical.
  • the container to be produced has a bottom of complex shape (petaloid bottom) and the requirements for demolding the container after it has been formed result in the provision of a separate mold bottom 25 , distinct from the half-molds 2 , which includes the impression of the bottom of the container.
  • FIG. 3 is a view from below of the half-mold in FIG. 2 , the mold bottom 25 not being shown.
  • the axial mutual positioning of the shell holder 9 and of the shell 7 is achieved by a rib(s)/groove(s) set of mating elements which fit together, one in the other.
  • the shell 7 is provided with two grooves 17 , hollowed out circumferentially in its external face 14 axially separated from each other; likewise, the cradle-shaped face 15 of the shell holder 9 has two ribs 16 which fit together without any clearance in the two respective grooves 17 .
  • quick-fixing means are provided in the parting face 13 of the shell and in the parting face 18 of the shell holder.
  • respective housings 19 and 20 hollowed out in the facing edges of the afore-mentioned parting faces 13 and 18 , respectively, are provided.
  • the bottoms of the housings 19 of the shell 7 constitute flat bearing surfaces on which may bear members for locking the shell holder 9 .
  • These locking members may be formed in many ways known to those skilled in the art. In the example shown in FIG.
  • these are projecting lugs 21 drilled with an elongate hole 22 and retained by a screw 23 fixed to the bottom of the corresponding housing 20 of the parting face 18 of the shell holder 9 ;
  • this arrangement has the advantage that the shell is released as soon as the lugs 21 are unlocked and pushed back toward the outside, without it being necessary to remove the screws 23 completely.
  • the shell could also be locked onto the shell holder by using wide-head screws overlapping the flats of the housings 19 , or else by using quick-face eccentric-head screws, etc.
  • each shell holder 9 is designed in the same way as a previous half-mold, which includes the elements necessary for correct operation of the molding device, and in particular the means 10 for fixing it to the corresponding mold carrier 3 , the guiding fingers 24 (and the respective housings in the other shell holder) for closing the mold, the rear face provided with a chamber 26 and with an O-ring seal 27 for compensation as shown in FIG. 4 . It is therefore possible, in a preexisting installation, to replace the conventional monobloc half-molds with two-element half-molds according to the invention.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)
US09/553,413 1995-04-19 1996-04-16 Blow molding device for producing thermoplastic containers Expired - Lifetime USRE39769E1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9504651A FR2733176B1 (fr) 1995-04-19 1995-04-19 Dispositif pour fabriquer des recipients en une matiere thermoplastique par soufflage ou etirage-soufflage
PCT/FR1996/000576 WO1996033059A1 (fr) 1995-04-19 1996-04-16 Dispositif pour fabriquer des recipients en une matiere thermoplastique par soufflage ou etirage-soufflage

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US08/945,089 Reissue US5968560A (en) 1995-04-19 1996-04-16 Blow molding device for producing thermoplastic containers

Publications (1)

Publication Number Publication Date
USRE39769E1 true USRE39769E1 (en) 2007-08-14

Family

ID=9478234

Family Applications (3)

Application Number Title Priority Date Filing Date
US09/553,413 Expired - Lifetime USRE39769E1 (en) 1995-04-19 1996-04-16 Blow molding device for producing thermoplastic containers
US08/945,089 Ceased US5968560A (en) 1995-04-19 1996-04-16 Blow molding device for producing thermoplastic containers
US12/902,475 Expired - Lifetime USRE41572E1 (en) 1995-04-19 2001-07-09 Blow molding device for producing thermoplastic containers

Family Applications After (2)

Application Number Title Priority Date Filing Date
US08/945,089 Ceased US5968560A (en) 1995-04-19 1996-04-16 Blow molding device for producing thermoplastic containers
US12/902,475 Expired - Lifetime USRE41572E1 (en) 1995-04-19 2001-07-09 Blow molding device for producing thermoplastic containers

Country Status (17)

Country Link
US (3) USRE39769E1 (el)
EP (1) EP0821641B1 (el)
JP (1) JP3500153B2 (el)
KR (1) KR100356307B1 (el)
CN (1) CN1061586C (el)
AT (1) ATE195094T1 (el)
AU (1) AU707275B2 (el)
BR (1) BR9604899A (el)
CA (1) CA2218397C (el)
DE (1) DE69609605T2 (el)
DK (1) DK0821641T3 (el)
ES (1) ES2149470T3 (el)
FR (1) FR2733176B1 (el)
GR (1) GR3034540T3 (el)
HK (1) HK1010513A1 (el)
PT (1) PT821641E (el)
WO (1) WO1996033059A1 (el)

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US20120103976A1 (en) * 2010-11-02 2012-05-03 Microwine S.r.l. Apparatus for heating containers
US8287270B2 (en) 2009-09-30 2012-10-16 Printpack Illinois Inc. Methods and systems for thermoforming with billets
US8894404B2 (en) 2009-05-06 2014-11-25 Krones Ag Blowing mold array, stretch blow molding machine and method

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AUPN496195A0 (en) * 1995-08-22 1995-09-14 Aci Operations Pty. Limited Improved process for mould replacement
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US6447281B1 (en) 1998-09-11 2002-09-10 Sidel, Inc. Blow mold shell and shell holder assembly for blow-molding machine
US6648623B2 (en) 1999-02-05 2003-11-18 Sidel, Inc. Quick change blow mold shell assembly
US6444159B2 (en) 1999-05-04 2002-09-03 Sidel, Inc. Blow mold shell and shell assembly
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FR2796588B1 (fr) * 1999-07-23 2001-10-12 Sidel Sa Machine de soufflage de recipients a poignee rapportee comportant un bras de transfert perfectionne
FR2796591B1 (fr) * 1999-07-23 2001-10-12 Sidel Sa Machine de soufflage de recipients comportant des moyens perfectionnes pour rapporter une poignee
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US6994542B2 (en) * 2003-12-30 2006-02-07 Wentworth Mold Inc. Air flow compensation for mold carrier
JP4479509B2 (ja) 2005-01-17 2010-06-09 エプソンイメージングデバイス株式会社 フレキシブル配線基板の接続装置
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KR100613658B1 (ko) 2005-04-28 2006-08-22 (주)피스코엔지니어링 페트병용 지지기구
DE102005035233A1 (de) * 2005-07-25 2007-04-12 Sig Technology Ag Vorrichtung zur Halterung von Blasformsegmenten
US20070042070A1 (en) * 2005-07-28 2007-02-22 Mark Hallink Shell Attachment Means For Blow Molding Machines
US7338272B2 (en) * 2005-09-15 2008-03-04 Uniloy Milacron Inc. Apparatus for blow molding
FR2903933B1 (fr) * 2006-07-21 2008-10-03 Sidel Participations Dispositif de moulage pour la fabrication de recipients thermoplastiques
BRPI0604823C1 (pt) * 2006-11-21 2008-08-12 Leonardo Arcuri Neto molde de sopro
US8454343B2 (en) * 2007-01-31 2013-06-04 Amcor Limited Blow mold design
US7887315B2 (en) * 2007-01-31 2011-02-15 Amcor Limited Blow mold design
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US20090155400A1 (en) * 2007-12-17 2009-06-18 Paul Alan Miller Apparatus for Blow Molding
FR2930189B1 (fr) * 2008-04-21 2013-02-01 Sidel Participations Dispositif de moulage de recipients comprenant des moyens de reglage des dimensions volumiques de la cavite de moulage
US9067254B2 (en) * 2008-10-16 2015-06-30 The Coca-Cola Company Method of configuring a production line to mass customize shaped vessels
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JP6701131B2 (ja) * 2017-07-07 2020-05-27 ユニプラス株式会社 金型取り付け用の背板、及び成形機
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US8894404B2 (en) 2009-05-06 2014-11-25 Krones Ag Blowing mold array, stretch blow molding machine and method
US10155337B2 (en) 2009-05-06 2018-12-18 Krones Ag Blow mold array, stretch blow molding machine and method
US11052595B2 (en) 2009-05-06 2021-07-06 Krones Ag Blow mold array, stretch blow molding machine and method
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US20120103976A1 (en) * 2010-11-02 2012-05-03 Microwine S.r.l. Apparatus for heating containers

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AU5652996A (en) 1996-11-07
DE69609605T2 (de) 2001-04-12
CN1182384A (zh) 1998-05-20
ES2149470T3 (es) 2000-11-01
DK0821641T3 (da) 2000-12-11
JP3500153B2 (ja) 2004-02-23
FR2733176B1 (fr) 1997-06-27
CN1061586C (zh) 2001-02-07
CA2218397C (fr) 2001-12-25
CA2218397A1 (fr) 1996-10-24
HK1010513A1 (en) 1999-06-25
PT821641E (pt) 2001-01-31
AU707275B2 (en) 1999-07-08
BR9604899A (pt) 1998-07-14
EP0821641B1 (fr) 2000-08-02
JPH11504580A (ja) 1999-04-27
DE69609605D1 (de) 2000-09-07
KR19990007797A (ko) 1999-01-25
USRE41572E1 (en) 2010-08-24
GR3034540T3 (en) 2001-01-31
WO1996033059A1 (fr) 1996-10-24
ATE195094T1 (de) 2000-08-15
EP0821641A1 (fr) 1998-02-04
US5968560A (en) 1999-10-19
FR2733176A1 (fr) 1996-10-25
KR100356307B1 (ko) 2003-01-15
MX9708042A (es) 1997-11-29

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