WO1997049509A1 - Formation de boites - Google Patents

Formation de boites Download PDF

Info

Publication number
WO1997049509A1
WO1997049509A1 PCT/GB1997/001647 GB9701647W WO9749509A1 WO 1997049509 A1 WO1997049509 A1 WO 1997049509A1 GB 9701647 W GB9701647 W GB 9701647W WO 9749509 A1 WO9749509 A1 WO 9749509A1
Authority
WO
WIPO (PCT)
Prior art keywords
side wall
chuck
shaping
push ring
lifter pad
Prior art date
Application number
PCT/GB1997/001647
Other languages
English (en)
Inventor
Timothy Clark
Original Assignee
Carnaudmetalbox Plc
Carnaudmetalbox S.A.
Carnaudmetalbox N.V.
Carnaudmetalbox (Holdings) Usa Inc.
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 Carnaudmetalbox Plc, Carnaudmetalbox S.A., Carnaudmetalbox N.V., Carnaudmetalbox (Holdings) Usa Inc. filed Critical Carnaudmetalbox Plc
Priority to AU31815/97A priority Critical patent/AU3181597A/en
Publication of WO1997049509A1 publication Critical patent/WO1997049509A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • B21D51/2646—Of particular non cylindrical shape, e.g. conical, rectangular, polygonal, bulged

Definitions

  • This invention relates to a method and apparatus for shaping a can.
  • it relates to the shaping of metal cans, made of aluminium or tinplate (or of laminates of aluminium or steel with polymer materials) for example, by diametrically reducing the can in one or more positions along the can.
  • This shaping is hereinafter referred to as forming one or more "waists" in the can side wall and the positioning of such diametrical reductions is not considered as being limited in any way by the use of this terminology.
  • a drawn and wall ironed (DWI) can body typically comprises a base and an upstanding side wall terminating in an upper cylindrical portion which is thicker than the main part of the side wall for forming a shoulder, neck and flange on the can body.
  • a spin necking process is described for a DWI can body which is typically of the one-piece type, comprising an integral base and cylindrical side wall with an open end.
  • the base of the can is held by air pressure against a support and a chuck with a primary tool edge is engaged within the open end.
  • the edge of the open end is restrained from any radial movement, which would lead to deformation of the side wall, by positioning within a rebate in a control or limit ring.
  • one or more rollers apply a radial force to the thicker upper cylindrical portion of the side wall whilst the open end is moved axially past the primary tool edge of the chuck to form the neck.
  • the control ring exerts only a limited axial pressure on the open end, whereas in a subsequent combined necking and flanging operation, axial and inward radial forces are applied simultaneously so as to provide an axial shortening force, thus reforming the neck and forming a flange in free space.
  • an apparatus for shaping a can body having at least a cylindrical side wall comprising: a chuck for receiving and rotating the can body; a lifter pad for supporting one end of the can body; means for holding the can body against the lifter pad; at least one external forming roll which, in use, engages the can side wall adjacent to the chuck; means for axially moving the at least one forming roll and can body one with respect to the other such that material of the can side wall is drawn around the chuck to form one or more regions of reduced diameter on the can body; and an axial member for carrying the chuck, having a smaller diameter than that of the chuck, whereby the end of the can body remote from the lifter pad is free to flex radially and/or assume
  • the means for holding the can body against the lifter pad may be a pressurised fluid, usually air.
  • the can body comprises a simple cylinder, other mechanical holding means for gripping, pulling or pushing the cylinder onto the lifter pad are required. This holding means may also serve to support the can internally as shaping is taking place.
  • the apparatus includes a push ring which is different from the control ring used for necking in that there is no groove on the ring.
  • the end of the can body remote from the lifter pad contacts a smooth face of the push ring, thus enabling the said end to flex freely.
  • the push ring may therefore be used to apply an axial load to the can body.
  • An axial load acts as a height limiter by controlling wall thinning during shaping, which would normally cause a height increase.
  • the axial load may also be varied during the shaping of the can side wall, conveniently by varying the distance between the push ring and the lifter pad.
  • the push ring and the lifter pad are axially movable so as to move the can body with respect to the at least one forming roll, and also with respect to the chuck.
  • the clearance between the chuck and the can body may be up to 0.5mm.
  • the forming roll or rolls firstly move in, pushing the material of the can wall ahead of the roll. This displaced material collects ahead of the roll and is only dissipated when the roll begins to move out once more.
  • an axial load to the can during shaping, thinning as the material is drawn around the chuck in this way is minimised.
  • the combination of the load applied by the push ring and air pressure within the can which tends to pull material down from the waist towards the lifter pad, helps to distribute material along the side wall throughout the shaping process.
  • the axial member which carries the chuck preferably has a radius of at least 1mm less than the chuck radius, advantageously at least 2mm less, although shaping with smaller differences between these radii may be possible where only a small reduction in diameter is required.
  • this axial member may simply comprise a spindle. It will be appreciated that it is essential for the upper edge of the can body to be free to assume a non- circular shape during shaping. Whilst this is preferably achieved by allowing the edge to flex freely, other solutions are considered possible within the scope of the present invention. For example, where two forming rolls are used, the upper edge will seek to assume an elliptical shape. This shape could be automatically imposed on the upper edge by an elliptical push ring or by stepped rollers connected to the lower surface of the push ring so as to enable the eccentricity to be precisely controlled.
  • the push ring and support pad may be driven for axial movement together or independently. Separate drives are preferred to optimise control of the can height during waist formation.
  • a method of shaping a can body having at least a cylindrical side wall comprising: rotating the can body on a chuck; engaging the can side wall with one or more external forming rolls adjacent to the chuck; axially moving the one or more external forming rolls and the can body one with respect to the other so as to draw the material of the can side wall around the chuck to form one or more regions of reduced diameter on the can body; and allowing the unshaped portion of the can body to flex radially and/or assume a non-circular configuration during shaping of the can side wall.
  • a method of shaping a can body having at least a cylindrical side wall comprising: rotating the can body on a chuck; engaging the can side wall with one or more external forming rolls adjacent to the chuck; axially moving the one or more external forming rolls and the can body one with respect to the other so as to draw the material of the can side wall around the chuck to form one or more regions of reduced diameter on the can body; and superimposing a preselected pattern of mechanical deformations having an axial component on to the shaped can side wall.
  • a drawn and wall ironed can body comprising a base and an upstanding side wall, in which the side wall is shaped by one or more diametrical reductions of up to 20%.
  • Figure 1 is a partial side section of a drawn and wall ironed can body
  • Figure 2 is a schematic side view of a shaped can body
  • Figure 3 is a partial side section of a prior art apparatus for providing a neck on a can body
  • Figure 4 is a schematic side view of a first apparatus for can body shaping
  • Figure 5 is a schematic side view of a second apparatus for can body shaping
  • Figure 6 is a schematic side view of the apparatus of figure 5, after shaping has taken place
  • Figure 7 is a schematic side view of the apparatus of figures 5 and 6, during shaping of a second waist
  • Figure 8 is a schematic partial side view of the apparatus of figures 5 to 7, showing movement of a shaping roll
  • Figure 9 is a graph of push ring and roll profiles
  • Figure 10 is a first can profile manufactured in accordance with the teaching of the present invention
  • Figure 11 is a second can profile manufactured in accordance with the teaching of the present invention
  • Figure 12 is a third can profile manufactured in accordance with the teaching of the present invention
  • Figure 13 is a graph of push ring, lifter pad and forming roll displacement for the profile of figure 10
  • Figure 14 is a graph of push ring, lifter pad and forming roll displacement for the profile of figure 11
  • Figure 15 is a graph of push ring, lifter pad and forming roll displacement for the profile of figure 12.
  • Figure 1 shows a can body 1 comprising a base 2 and a substantially cylindrical side wall 3.
  • the can body is made by drawing sheet metal to a cup, which may or may not be redrawn to a reduced diameter, after which the drawn cup is pushed by a profiled punch through at least one ironing die to create a longer side wall, which is thinner than the base.
  • the can body shown in figure 1 is typically 66mm diameter by about 120mm tall.
  • the base is about 0.3mm thick and the wall ironed side wall 3 changes in thickness along its length.
  • the side wall comprises several distinct parts as follows: (i) a first cylindrical portion 4 adjacent the periphery of the base, (ii) a first annular zone 5 which reduces in thickness in a direction away from the base, (iii) a thin cylindrical wall portion 6 which constitutes the majority of the height and extends away from the first annular zone to (iv) a second annular zone 7 which increases upwardly in thickness, and (v) a second cylindrical wall portion 3 which is thicker than the cylindrical portion 6 but thinner than the base 2.
  • the second cylindrical wall portion 8 defines the mouth of the wall ironed can body and is provided with the less thinned metal in order to avoid cracking of the work hardened metal around the mouth when a shoulder, neck and flange are formed on the container.
  • the thin work hardened metal of the cylindrical side wall 6 that is to be provided with one or more waists in the shaping of the present invention. Because of the work hardening and thinness of this region, different problems are encountered in forming waists from those inherent in necking and flanging operations.
  • FIG. 2 shows a can body 10 in which a single waist 20 has been formed.
  • the waist represents a diametrical reduction 21 and has an entry wall angle 22. These parameters are specific to the desired waist shape formed in direction 23.
  • the necking apparatus comprises a lifter pad 30 aligned with and directly below a necking head assembly 31, both of these being carried by a main frame.
  • the lifter pad 30 is rotatable and mounted for axial movement.
  • the necking head assembly 31 comprises a chuck 32 which is rotatable but not axially movable with respect to the main frame.
  • the chuck 32 has primary and secondary tools 33 and 34 respectively which define working space 35.
  • An annular control ring 36 has a groove 37 which is essential to prevent radial deformation of any part of the end portion of the can body side wall around the primary tool 33 by engaging the edge of the mouth of the can body. This feature is better seen in the enlarged inset to figure 3.
  • the control ring 36 is axially movable.
  • a forming roll 40 is rotatably mounted in a forming roll carrier (not shown) and radially movable towards and away from the central axis and enter the working space 35 when rolling a neck, as shown in the figure.
  • FIG 4 A first embodiment of an apparatus for forming a waist in a can, together with a can body positioned on a chuck 60 is shown in figure 4.
  • the can body is lifted onto the chuck 60 by a lifter pad 50 in the same way as in the necking apparatus of figure 3, there is no grooved control ring to prevent radial movement of the top of the can.
  • the chuck 60 is carried by a spindle 65, with a substantial gap between the spindle and the can side wall. Flexing of the can is represented by the dotted line.
  • Pressurised air is introduced through a duct along the central axis of the spindle into the space 70 below the chuck. This pressurised air holds the can against the lifter pad and draws the material of the can side wall between the chuck and one or more forming rolls (not shown) in order to form a waist in the can side wall as will be described in detail with reference to figures 5 and 6 below.
  • Drives are provided for rotation of the chuck assembly 60, 65 and lifter pad 50, as well as axial movement of either the chuck or the lifter pad.
  • the air pressure is adjustable for maintaining contact between the can base and the lifter pad during axial movement of the lifter pad.
  • Figures 5 and 6 show a second embodiment of can shaping apparatus which includes the same features as those of figure 4 but in which a push ring 80 is also provided.
  • This push ring differs in one fundamental respect from the control ring used in the necking apparatus of figure 3, namely that there is no groove to restrain movement of the top of the can body.
  • spindle 65 is larger in diameter than that of figure 4, the gap 68 is sufficient to allow the maximum flexing of the can side wall which was experienced in practice using the apparatus of figure 4. Typically, this would be at least 1mm, most preferably 2mm or more. In order to save material costs, clearly the diameter of the spindle 65 may be smaller, as in figure
  • the chuck 60 contacts the can body 100 in a tight fit (less than 0.2mm clearance) .
  • the chuck 60 extends axially along the can body 100 a minimum of 5mm, but preferably not more than 25mm.
  • Pressurised air is introduced through a central duct in the spindle 65 into the space 70. This serves to hold the can body against the lifter pad, to provide internal support and also to assist in obtaining optimum distribution of forces in the can side wall during shaping.
  • axial drives are again provided for rotation of the chuck assembly 60,65 and lifter pad 50, as well as axial movement of the push ring 80 and the lifter pad 50.
  • the axial drives are independent of each other.
  • Three independent cams may be used to control movement of the lifter pad, push ring and rolls respectively, each cam being driven by a constant speed motor.
  • Alternative control methods such as electronic cams are also possible within the scope of the invention.
  • chuck and rolls are arranged so that there is no relative axial movement, generally also being immovable axially.
  • two or three rolls are usually provided, equispaced around the common axis 95 of the lifter pad 50, chuck assembly 60,65 and push ring 80. These are rotatably mounted in a carrier, for example, and are radially movable towards and away from the can body.
  • a waist is formed on a metal can body 100 in the following manner.
  • the lifter pad 50 and push ring 80 are first retracted axially away from the chuck and the roll or rolls 90 are moved radially outwards.
  • the can body is delivered to the lifter pad 50 so that its central axis coincides with the central axis 95 of the tooling.
  • the lifter pad is then driven towards the chuck until the push ring 80 contacts the edge of the mouth 108 of the can body and the chuck 60 fully enters the can body as shown in figure 5.
  • the chuck assembly 60,65, can body 100 and lifter pad 50 are continuously rotated during formation of a waist.
  • the roll 90 is advanced radially towards the chuck until the side wall 106 of the can body is located in a forming gap 25 between the roll and the chuck. As the push ring and the lifter pad are driven axially downwards, the side wall 106 moves progressively though the forming gap 25. The air pressure within space 70 will ensure that contact between the base 102 and the lifter pad 50 is maintained and may also be varied if necessary. Radial drive to the roll 90 is controlled so as to move the roll inwards, to maintain its radial position or to roll outwards, according to the desired profile of the side wall. At the position shown in figure 6, a single waist 110 has been formed in the side wall 106, the push ring is fully advanced and lifter pad 50 is fully retracted.
  • a margin which in the case of a DWI can comprises the thicker upper side wall, remains so that the can body may be removed and a neck, shoulder and flange formed in conventional manner.
  • Figure 7 shows the apparatus of figures 5 and 6 during formation of a second waist in the can side wall. Where complex shapes or shapes requiring sharp entry angles are desired, for example, the number of forming revolutions per inch may be varied accordingly.
  • Figure 8a shows the roll moving radially inwards to form a waist. As the roll moves in, it pushes metal ahead of it, the metal collecting in the area above the roll. At sharp entry angles as shown in figure 8a, this has the effect of reducing the overall height of the can body.
  • the top half of the graph represents displacement of the push ring (upper trace) and roll (lower trace) .
  • the bottom half of the graph indicates the differential load applied by the push ring due to its moving at a different speed from that of the lifter pad and as dictated by the desired shape. Firstly this load is shown for a straight walled can, without forming rolls, indicated by the solid trace, and secondly on a can during formation of a single waist, indicated by the crossed solid trace.
  • the vertical dashed line in the centre of the graph indicates the point at which the required diametrical reduction is achieved and the rolls change direction. It can be seen that the trace for the straight walled can is much more variable than that for the waisted profile.
  • Example 1 The use of a push ring as in the second embodiment has also been found to affect the variation in can growth.
  • the average can growth using the apparatus of figure 4, that is without a push ring was 1.742mm, representing a standard deviation (SD) of 0.152.
  • SD standard deviation
  • the use of a push ring as in figures 5 to 7, resulted in a can growth of only 0.7mm on average (SD 0.028) .
  • SD standard deviation
  • the unrestrained growth per unit diametrical reduction is much greater for aluminium than it is for tin plated steel.
  • SD 0.075
  • the tightest control over can height variation is achieved with a solid push ring rather than spring loaded, which introduces a degree of positional variability.
  • the forming limits are shown in table 1.
  • 50 cans per minute per head can be shaped.
  • Figures 10 to 12 show three different can profiles formed in accordance with the teaching of the present invention. Different profiles may be achieved by using different forming revolutions per inch, the number of forming revolutions being selected according to the shape required.
  • the complete profile of figure 10 used a total of 150 forming revolutions at an air pressure of 50 psi.
  • the more angular features of the profile of figure 11 was formed using a varying number of forming revolutions since certain features of the profile required a greater number of revolutions per inch to produce.
  • the total number of forming revolutions for this profile was 120.
  • An air pressure of 40 psi was used.
  • the taller and less angular profile of figure 12 used a total of 120 forming revolutions at an air pressure of 40 psi.
  • Graphs of push ring, lifter pad and forming roll displacement (as viewed from top to bottom of the figures) for one rotation of their individual cam controls are given in figures 13 to 15 for each of the respective can profiles.
  • the can body may be further enhanced by the addition of mechanical deformations having an axial component, such as flutes, ribs etc.
  • the deformation may be added by means of apparatus in accordance with our published European Patent No. EPO492860 and/or our published PCT Patent application No. W095/15227, the contents of which are herein incorporated by reference.
  • an internal roll may be provided to allow both expansion and reduction in diameter.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

Procédé et dispositif pour former une boîte (100) en faisant tourner la boîte sur un mandrin (65) tout en appliquant des rouleaux sur l'extérieur de la paroi latérale de manière à pousser cette paroi vers l'intérieur pour former un ou plusieurs resserrements. Généralement, la boîte est maintenue contre un élément porteur (50) par la pression d'air entre le mandrin et le fond de la boîte. Un anneau de propulsion peut être utilisé pour charger la paroi latérale de la boîte dans la direction axiale tout en permettant à cette paroi de plier librement pendant le processus de formation. A cette fin, le mandrin est supporté par un axe dont le rayon est inférieur à celui du mandrin.
PCT/GB1997/001647 1996-06-21 1997-06-19 Formation de boites WO1997049509A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU31815/97A AU3181597A (en) 1996-06-21 1997-06-19 Can shaping

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9613102.4A GB9613102D0 (en) 1996-06-21 1996-06-21 Can shaping
GB9613102.4 1996-06-21

Publications (1)

Publication Number Publication Date
WO1997049509A1 true WO1997049509A1 (fr) 1997-12-31

Family

ID=10795715

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1997/001647 WO1997049509A1 (fr) 1996-06-21 1997-06-19 Formation de boites

Country Status (3)

Country Link
AU (1) AU3181597A (fr)
GB (1) GB9613102D0 (fr)
WO (1) WO1997049509A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6442988B1 (en) 2001-05-01 2002-09-03 Alcan International Limited Methods of spin forming initially cylindrical containers and the like
EP1279446A1 (fr) * 2001-07-25 2003-01-29 Crown Cork & Seal Technologies Corporation Procédé et dispositif pour la réalisation des cannelures dans une boîte
WO2003095126A1 (fr) 2002-05-10 2003-11-20 Hokkai Can Co.,Ltd. Procede et dispositif de formation du pourtour d'une canette
WO2007123714A1 (fr) * 2006-03-31 2007-11-01 Belvac Production Machinery, Inc. Appareil d'élargissement de canettes
US7818987B2 (en) 2006-03-31 2010-10-26 Belvac Production Machinery, Inc. Method and apparatus for trimming a can
US7886894B2 (en) 2006-03-31 2011-02-15 Belvac Production Machinery, Inc. Method and apparatus for bottle recirculation
US7905130B2 (en) 2006-03-31 2011-03-15 Belvac Production Machinery, Inc. Apparatus for threading cans
US9290329B2 (en) 2008-04-24 2016-03-22 Crown Packaging Technology, Inc. Adjustable transfer assembly for container manufacturing process
US9308570B2 (en) 2008-04-24 2016-04-12 Crown Packaging Technology, Inc. High speed necking configuration
CN109746341A (zh) * 2019-01-15 2019-05-14 上海佳田药用包装有限公司 一种可制作微型可乐瓶状收口模

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0113248A2 (fr) * 1982-12-30 1984-07-11 Mb Group Plc Façonnage d'embouchures de corps de boîtes
EP0140469A1 (fr) * 1983-10-14 1985-05-08 Ball Corporation Dispositif et méthode pour former une contraction dans le corps d'un récipient
EP0245050A2 (fr) * 1986-05-02 1987-11-11 Ball Corporation Appareil et procédé pour l'emboutissage au tour réglé de boîtes
EP0492860A1 (fr) * 1990-12-21 1992-07-01 CarnaudMetalbox plc Récipients
EP0520693A1 (fr) * 1991-06-26 1992-12-30 Toyo Seikan Kaisha Limited Méthode de formage l'ouverture de boîte métallique
FR2710569A1 (fr) * 1993-09-30 1995-04-07 Metal Box Plc Machine de moulurage annulaire sur un élément tubulaire métallique.
WO1995015227A1 (fr) * 1993-12-04 1995-06-08 Carnaudmetalbox Plc Recipients

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0113248A2 (fr) * 1982-12-30 1984-07-11 Mb Group Plc Façonnage d'embouchures de corps de boîtes
EP0140469A1 (fr) * 1983-10-14 1985-05-08 Ball Corporation Dispositif et méthode pour former une contraction dans le corps d'un récipient
EP0245050A2 (fr) * 1986-05-02 1987-11-11 Ball Corporation Appareil et procédé pour l'emboutissage au tour réglé de boîtes
EP0492860A1 (fr) * 1990-12-21 1992-07-01 CarnaudMetalbox plc Récipients
EP0520693A1 (fr) * 1991-06-26 1992-12-30 Toyo Seikan Kaisha Limited Méthode de formage l'ouverture de boîte métallique
FR2710569A1 (fr) * 1993-09-30 1995-04-07 Metal Box Plc Machine de moulurage annulaire sur un élément tubulaire métallique.
WO1995015227A1 (fr) * 1993-12-04 1995-06-08 Carnaudmetalbox Plc Recipients

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6442988B1 (en) 2001-05-01 2002-09-03 Alcan International Limited Methods of spin forming initially cylindrical containers and the like
EP1279446A1 (fr) * 2001-07-25 2003-01-29 Crown Cork & Seal Technologies Corporation Procédé et dispositif pour la réalisation des cannelures dans une boîte
WO2003009952A1 (fr) * 2001-07-25 2003-02-06 Crown Cork & Seal Technologies Corporation Moulurage de recipients
US7024900B2 (en) 2001-07-25 2006-04-11 Crown Cork & Seal Technologies Corporation Container beading
WO2003095126A1 (fr) 2002-05-10 2003-11-20 Hokkai Can Co.,Ltd. Procede et dispositif de formation du pourtour d'une canette
EP1506824A1 (fr) * 2002-05-10 2005-02-16 Hokkai Can Co., Ltd Procede et dispositif de formation du pourtour d'une canette
EP1506824A4 (fr) * 2002-05-10 2007-04-04 Hokkai Can Procede et dispositif de formation du pourtour d'une canette
US7905130B2 (en) 2006-03-31 2011-03-15 Belvac Production Machinery, Inc. Apparatus for threading cans
US7818987B2 (en) 2006-03-31 2010-10-26 Belvac Production Machinery, Inc. Method and apparatus for trimming a can
US7886894B2 (en) 2006-03-31 2011-02-15 Belvac Production Machinery, Inc. Method and apparatus for bottle recirculation
WO2007123714A1 (fr) * 2006-03-31 2007-11-01 Belvac Production Machinery, Inc. Appareil d'élargissement de canettes
US7918328B2 (en) 2006-03-31 2011-04-05 Belvac Production Machinery, Inc. Method and apparatus for bottle recirculation
US7950259B2 (en) 2006-03-31 2011-05-31 Belvac Production Machinery, Inc. Method and apparatus for trimming a can
US7963139B2 (en) 2006-03-31 2011-06-21 Belvac Production Machinery, Inc. Apparatus for can expansion
US8505350B2 (en) 2006-03-31 2013-08-13 Belvac Production Machinery, Inc. Apparatus for threading cans
US9290329B2 (en) 2008-04-24 2016-03-22 Crown Packaging Technology, Inc. Adjustable transfer assembly for container manufacturing process
US9308570B2 (en) 2008-04-24 2016-04-12 Crown Packaging Technology, Inc. High speed necking configuration
US9968982B2 (en) 2008-04-24 2018-05-15 Crown Packaging Technology, Inc. High speed necking configuration
US10751784B2 (en) 2008-04-24 2020-08-25 Crown Packaging Technology, Inc. High speed necking configuration
CN109746341A (zh) * 2019-01-15 2019-05-14 上海佳田药用包装有限公司 一种可制作微型可乐瓶状收口模

Also Published As

Publication number Publication date
AU3181597A (en) 1998-01-14
GB9613102D0 (en) 1996-08-28

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