WO2003047831A1 - Device et procede de remplissage de moules - Google Patents

Device et procede de remplissage de moules Download PDF

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Publication number
WO2003047831A1
WO2003047831A1 PCT/EP2002/013776 EP0213776W WO03047831A1 WO 2003047831 A1 WO2003047831 A1 WO 2003047831A1 EP 0213776 W EP0213776 W EP 0213776W WO 03047831 A1 WO03047831 A1 WO 03047831A1
Authority
WO
WIPO (PCT)
Prior art keywords
plastic material
filling
dose
chamber
sliding surface
Prior art date
Application number
PCT/EP2002/013776
Other languages
English (en)
Inventor
Matteo Zoppas
Original Assignee
S.I.P.A. Societa Industrializzazione Progettazione Automazione S.P.A.
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 S.I.P.A. Societa Industrializzazione Progettazione Automazione S.P.A. filed Critical S.I.P.A. Societa Industrializzazione Progettazione Automazione S.P.A.
Priority to AU2002358094A priority Critical patent/AU2002358094A1/en
Publication of WO2003047831A1 publication Critical patent/WO2003047831A1/fr

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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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/04—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles using movable moulds
    • B29C43/06—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles using movable moulds continuously movable in one direction, e.g. mounted on chains, belts
    • B29C43/08—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles using movable moulds continuously movable in one direction, e.g. mounted on chains, belts with circular movement, e.g. mounted on rolls, turntables
    • 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
    • B29C31/00—Handling, e.g. feeding of the material to be shaped, storage of plastics material before moulding; Automation, i.e. automated handling lines in plastics processing plants, e.g. using manipulators or robots
    • B29C31/04—Feeding of the material to be moulded, e.g. into a mould cavity
    • B29C31/042—Feeding of the material to be moulded, e.g. into a mould cavity using dispensing heads, e.g. extruders, placed over or apart from the moulds
    • B29C31/047—Feeding of the material to be moulded, e.g. into a mould cavity using dispensing heads, e.g. extruders, placed over or apart from the moulds combined with moving 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
    • B29C31/00—Handling, e.g. feeding of the material to be shaped, storage of plastics material before moulding; Automation, i.e. automated handling lines in plastics processing plants, e.g. using manipulators or robots
    • B29C31/04—Feeding of the material to be moulded, e.g. into a mould cavity
    • B29C31/06—Feeding of the material to be moulded, e.g. into a mould cavity in measured doses, e.g. by weighting
    • B29C31/065—Feeding of the material to be moulded, e.g. into a mould cavity in measured doses, e.g. by weighting using volumetric measuring chambers moving between a charging station and a discharge station
    • B29C31/068—Feeding of the material to be moulded, e.g. into a mould cavity in measured doses, e.g. by weighting using volumetric measuring chambers moving between a charging station and a discharge station of the piston type
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/34—Feeding the material to the mould or the compression 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/34—Feeding the material to the mould or the compression means
    • B29C2043/3466—Feeding the material to the mould or the compression means using rotating supports, e.g. turntables or drums
    • 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
    • B29C33/34—Moulds or cores; Details thereof or accessories therefor movable, e.g. to or from the moulding station
    • B29C33/36—Moulds or cores; Details thereof or accessories therefor movable, e.g. to or from the moulding station continuously movable in one direction, e.g. in a closed circuit
    • 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
    • B29K2067/003—PET, i.e. poylethylene terephthalate

Definitions

  • the present invention relates to a device and a method for filling moulds for the moulding of objects made of plastic material and, in particular, a device and a method for filling a mould (or a number of moulding cavities for compression moulding of plastic materials, amongst which, in particular, PET, PS, PE, PP,
  • the invention may be applied, for example, in the moulding of parisons that are to be used for blow moulding of containers for foodstuffs.
  • Prior art
  • compression-moulding of parisons that are to be used for the blow moulding of bottles, jars or containers made of polyethylene terephthalate (PET) for mineral water, beverages or other foodstuffs would potentially offer various advantages over the more widespread injection-moulding technique: - lower moulding temperatures and pressures and hence a lower rate of residual acetaldehyde in the finished bottle.
  • Acetaldehyde is frequently a cause of an unpleasant taste of apple, for example in mineral-water bottles kept in warehouses where temperatures are very hot over long periods of time;
  • This system presents various drawbacks: the difficulty of uniform dosing of the amount of plastic material in the various cavities; the need to have moulds with a large number of moulding impressions, and hence the need to employ large-sized moulds, which can only be used with sequential machines; and the presence of non-uniform temperatures in the various moulding cavities.
  • a device for filling moulds for the moulding of objects made of plastic material which comprises one or more dispensing devices designed to pick up a pre-set dose of plastic material in the fluid state and to expel said dose into a mould, characterised in that it comprises thermal conditioning means, designed to keep the temperature of the surface or surfaces of the dispensing device, with which the pre-set dose of plastic material comes into contact, below a pre-set maximum value, and in that said surface or surfaces have a surface roughness not greater than an appropriate limit.
  • the aforesaid limit of surface roughness and the pre-set maximum temperature of the surface or surfaces of the dosing means, with which the preset dose of fluid plastic material comes into contact, are determined, in correlation with one another, in such a way as to facilitate detachment or release of the predetermined dose of plastic material from said surface or surfaces during the operation of expulsion.
  • the problems described above are solved by a method for filling mould cavities for moulding objects made of plastic material using a device as described above, and comprising the following operations: - introducing, through an opening, a pre-determined dose of plastic material in the fluid state into a dispensing device; and
  • a number of dispensing devices as described above are supplied simultaneously by getting them to slide sequentially along a channel fed by a plastication screw according to a path that describes the arc of a circle.
  • the dispensing devices drop the dose of fluid plastic into the cavity of a mould to be filled.
  • the process of filling and emptying the dispensing devices is thus performed in a continuous way and, thanks to the speed at which the dispensing devices are able to carry out filling of the moulding cavities, a device according to the present invention can advantageously and conveniently be used to feed a compression- moulding press operating according to a continuous cycle.
  • FIG. 1 is a schematic exploded and partially sectioned three-dimensional view of a filling device according to the present invention
  • - Figures 2 and 3 are schematic cross-sectional views on a longitudinal plane of a detail of the device of Figure 1 , with a dispensing device, prior to and during the filling step, respectively;
  • Figure 4 is a schematic cross-sectional view of the detail of Figure 2, with the dispensing device in the emptying step.
  • Figures 1 to 3 are schematic illustrations of a preferred embodiment of a device for filling one or more moulds for the production of plastic objects moulded by means of compression moulding according to the invention.
  • This embodiment relates, in particular, to the moulding of parisons made of PET for the production of bottles, jars, containers for foodstuffs or hollow objects, but it is obvious to a person skilled in the branch that the present invention can easily be applied to the moulding of a much greater range of objects made of plastic, as well as ones made of materials other than polyethylene terephthalate, such as, for example, PS, PE, PP, PVC, PEN and PBT.
  • the above preferred example of embodiment comprises a plate support 3, fixed with respect to the frame of the machine, and a turntable 4, which can rotate about the vertical axis of rotation A.
  • a plate support 3 Fixed with respect to the frame of the machine, and a turntable 4, which can rotate about the vertical axis of rotation A.
  • a turntable 4 Positioned underneath the fixed plate support 3 and moved by means of appropriate mould-positioning means (not illustrated) is one or more half-moulds 2 for compression moulding, in each of which is made one or more moulding cavities 5 (the preferred example illustrated in Figure 1 shows a plurality of single-cavity moulds 2).
  • the top half of said swivel joint 7 is fixed on the bottom side of the turntable 4.
  • the swivel joint 7, as is explained in greater detail in what follows, enables a plurality of dispensing devices 8 mounted on the periphery of the turntable 4 to be filled with fluid plastic material.
  • Each dispensing device advantageously comprises a variable-volume cylindrical chamber 9 ( Figure 3) designed to contain a pre-determined dose of fluid plastic material and within which the piston 10 can slide vertically.
  • the piston system contributes to ensuring precision in dosing.
  • the chambers 9 and the pistons 10 are mounted on the turntable 4, with axes that are vertical and equidistant from the axis A-A.
  • the filling device comprises appropriate means of thermal conditioning, which are designed to keep the temperature of the surface or surfaces of the dispensing device 8, with which the pre-set dose of plastic material comes into contact, below a pre-determined maximum value, and the said surfaces have a surface roughness not greater than an appropriate limit.
  • the said limit of surface roughness and the aforesaid predetermined maximum temperature of the surface or of the surfaces of the dispensing means 8, with which the pre-set dose of fluid plastic material comes into contact, are determined, in correlation with one another, so as to facilitate, during expulsion, detachment of the pre-set dose of plastic material from said surface or surfaces, in particular, preventing or limiting the formation of strings or other residue of fluid plastic material adhering to the surfaces of the chamber 9 after expulsion of the dose.
  • the thermal-conditioning means are obtained, in the example illustrated in Figures 2 and 3, with cooling circuits with thermostatted water that cools, and controls the temperature of, the cylindrical walls of the chamber 9 and of the head of the piston 10.
  • the surface roughness of the walls of the chamber 9 and of the head of the piston 10 is determined experimentally as required in each case according to the type of plastic material that is to be moulded, as well as according to the operating temperatures, and can be obtained, for example, with processes of smoothing, polishing, lapping, or honing.
  • the maximum temperature that the walls of the chamber 9 and of the piston 10, with which the fluid plastic material comes into contact, can reach is appropriately fixed.
  • the temperature of the dose of fluid plastic material to be introduced into the dispensing device 8 is controlled with an appropriate system for controlling the temperature of the fluid plastic in the channel 6 (the said system is not represented in the figures).
  • the temperature of the dose of PET to be introduced into the dispensing device 8 was kept approximately between 250°C and 260°C, whilst the temperature of the walls of the chamber 9 and of the head of the piston 10 did not exceed approximately 60°C.
  • the surface finish of the walls of the cylindrical chamber 9 and of the head of the piston 10 was the one obtained by polishing.
  • the swivel joint 7 is obtained by setting, under pressure, one against another, the two halves, i.e., the top one and the bottom one, on which there are respectively made a first sliding surface 7a and a second sliding surface 7b, the said sliding surfaces 7a and 7b being made of an appropriate anti-friction material, for example, a ceramic material, which is resistant to wear and which preferably presents quite a good degree of thermal insulation. Obtained in the first sliding surface 7a is the filling channel 12 ( Figures 1 and
  • the second sliding surface 7b slides on the surface 7a, closing the feed channel 12 at the top, except for an area corresponding to the various dispensing devices 8.
  • Each of the latter faces a bottom opening 15 (see Figure 4) - which is made on the second sliding surface 7b - on the first sliding surface 7a and on the filling channel 12 and, as it slides along the channel 6 following upon rotation of the turntable 4 with respect to the fixed plate 3, is filled with a pre-determined dose of fluid plastic material.
  • the bottom opening coincides, as regards its shape and dimensions, with the cross section of the cylindrical chamber 9 itself, and advantageously the filling channel has a length such that a number of bottom openings 15 can be simultaneously set over it so that a number of dispensing devices can traverse together, one after another, the filling channel 12 and thus be filled.
  • the pressure, shape and surface finish of the two surfaces 7a, 7b of the swivel joint set against one another must be such as to ensure a sufficient seal of the fluid plastic, which (see Figure 3) from the channels 6 traverses the swivel joint 7 and is injected into the chamber 9, preferably raising, with its pressure, the piston 10.
  • the two halves of the swivel joint 7 are the sectors of two solids of revolution having the generating circumferences with equal radius of curvature, so as to be able to be substantially set on top of one another and facing one another in each of their cross sections.
  • the two halves 7a and 7b preferably come into contact on a flat surface.
  • the head of the piston 10 which can slide until it arrives flush with the bottom face of the half 7b of the swivel joint, so reducing the internal volume of the chamber 9 to zero.
  • the stroke of the piston 10 is limited by a suitable stroke limiter, either a mechanical one or one of another type, so as to determine with precision and constancy the amount of plastic material introduced into each chamber 9 at each filling step.
  • the stroke of the piston 10 is detected by one or more end- of-travel sensors, which are in themselves known and are not represented in the figures, for example, microswitches, photoelectric cells or other electrical or electromechanical sensors, so as to communicate to a logic unit (not represented either) the correct completion or otherwise of the filling process of each chamber 9.
  • the said diffusion, of heat is also contained by cooling the two sliding surfaces 7a, 7b, by providing appropriate cooling channels, respectively, the channels 70, made in the fixed plate 3, and the channels 70', made in the turntable 4.
  • the parts of the filling device that have a higher temperature are separated thermally in a clear way from the turntable 4 and from the dispensing devices 8, which, particularly when the cylindrical chamber 9 and the piston 10 are cooled with water or other coolant, constitute the part of the filling device that has a lower temperature, i.e., the so-called "cold" part.
  • the fixed plate 3 is shaped so that the various dispensing devices 8, after being filled as they slide along the filling channel 12 and after sliding over a more or less short stretch of surface 7a without filling channel 12, as the rotation of the turntable 4 about the axis A proceeds, pass over an undercut area 13 of the fixed plate 3 or, alternatively, traverse a stretch of the circular path of the dispensing devices 8 in which the underlying fixed plate 3 is absent.
  • Figure 4 is a schematic illustration of a cross section of a dispensing device 8 in an area corresponding to the area of undercut 13 and on the vertical axis of the open cavity 5 of a mould 2, which is appropriately positioned by the aforesaid mould-positioning means.
  • the bottom aperture 15 of the chamber 9 is opened, and the piston 10 can be lowered by means of appropriate actuators - for example, fluid cylinders, mechanical cam-actuating mechanisms, etc. - so as to expel the pre-determined amount of fluid plastic material completely from the chamber 9, dropping it, in the form of a globular mass, into the cavity 5 of the half-mould 2.
  • actuators for example, fluid cylinders, mechanical cam-actuating mechanisms, etc.
  • the top cross section (or mouth) of the moulding cavity 5 is equal to or greater than the cross section of the bottom opening 15 of the chamber 9, so as to facilitate introduction, by dropping, of the plastic material expelled from the dispensing devices 8 into the moulding cavities 5.
  • a pre-determined dispensing device enters the angle of the swivel joint 7 and, more in particular, starts to move over the groove or channel 12 that describes the arc of a circle (see Figure 2).
  • the plasticated material which is injected through the channels 6 and through the bottom opening 15 of the cylindrical chamber 9, starts to raise the piston 10 on account of the pressure that is formed in the channel 12, as it flows into the cylindrical chamber 9 ( Figure 3), whilst the dispensing device 8 in question continues to rotate along the groove 12.
  • the walls of the chamber 9 and the head of the piston 10 are cooled so as to keep their temperature below a determined maximum value, as explained previously, in correlation with the roughness of the walls of the chamber 9 and of the piston 10.
  • the speed of rotation of the top turntable 4, the pressure in the groove 12, and the calibration of the stroke limiters of the pistons are chosen so that the dispensing device 8 will be filled with the desired amount of plastic material - the said amount depending upon the mass of the object that is to be moulded - when it arrives at the end of the groove 12.
  • the dispensing device proceeds in its rotation over an angular area in which the bottom half 7a of the swivel joint is absent or is undercut, the cylindrical chamber 9 remains opened at the bottom, and the piston 10 is lowered - by means of an appropriate device- a cam mechanism, a piston, or some other mechanism -, so dropping the dose of fluid plastic through the undercut area 13 of the fixed support 3 into the cavity 5 of a half-mould 2, which had previously been positioned under the opening of the cylindrical chamber 9 ( Figure 4) by the aforesaid mould- positioning means (not shown).
  • the half-mould 2 is then ready for the subsequent operation of closing of the mould and for completion of the compression-moulding cycle.
  • the molten plastic material is preferably contained inside the chamber 9 as a result of the external atmospheric pressure.
  • the layer of insulating material 14, which thermally insulates the hot part and the cold part of the fixed plate 3 (and, respectively, separates the higher temperatures of the plastication and injection part from the lower temperatures of the second turntable 4 and the dispensing devices 8) facilitates release and expulsion, without any localised problems of adherence of the dose of plastic, so contributing to maintaining, thanks to the water-cooling circuit, the clear difference of temperature described above, between the hotter fluid plastic (250 -280°C) and the cooler walls of the chamber 9 (50-60°C) along the entire wall of the chamber 9 itself.
  • a number of dispensing devices simultaneously travel, one after the other (as illustrated in Figure 1 ) along the filling channel 12, so that one dispensing device 8 has already started to fill when the filling of the dispensing device in front of it has not yet terminated, according to' a continuous operation of the set of dispensing devices 8.
  • a continuous operation a plurality of half-moulds 2 is filled and can readily be sent on to a compression-moulding machine, which is also operating according to a continuous cycle.
  • the amount of plastic material deposited at each dose in the moulds may even be considerable and even reach 50-100 grams.
  • the example of embodiment described above may undergo various modifications and may, in particular, be applied to the moulding of objects that are not necessarily parisons for blow moulding of bottles made of plastic materials,
  • the half-moulds 2 may even be moulds with a number of moulding cavities 5.
  • the dispensing devices 8, the mobile top plate 4, and the filling channel 12 may be adapted to carry out filling with a sequential mode of operation, i.e., by lots , instead of continuous.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Robotics (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

Dans un dispositif de remplissage de moules pour le moulage par compression d'objets en plastique, des doses prédéterminées de matière plastique fluide sont introduites dans des dispositifs de distribution (8) qui coulissent sur un canal de remplissage (12). La dose prédéterminée est expulsée de la chambre (9) d'un moule (2) par abaissement d'un piston (10). Le détachement d'une dose de matière plastique chaude des parois de la chambre (9) est facilité par le refroidissement des parois elles-mêmes, lesquelles sont lissées en conséquence. Un procédé de réalisation du remplissage de moules au moyen du dispositif de l'invention est également décrit.
PCT/EP2002/013776 2001-12-07 2002-12-05 Device et procede de remplissage de moules WO2003047831A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002358094A AU2002358094A1 (en) 2001-12-07 2002-12-05 Device and method for filling moulds

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2001RM000724A ITRM20010724A1 (it) 2001-12-07 2001-12-07 Dispositivo e metodo per il riempimento di stampi.
ITRM2001A000724 2001-12-07

Publications (1)

Publication Number Publication Date
WO2003047831A1 true WO2003047831A1 (fr) 2003-06-12

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PCT/EP2002/013776 WO2003047831A1 (fr) 2001-12-07 2002-12-05 Device et procede de remplissage de moules

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AU (1) AU2002358094A1 (fr)
IT (1) ITRM20010724A1 (fr)
WO (1) WO2003047831A1 (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003090990A1 (fr) * 2002-04-23 2003-11-06 Sacmi Cooperativa Meccanici Imola S.C.R.L. Appareil de moulage par compression d'articles en plastique
WO2005014254A1 (fr) * 2003-08-05 2005-02-17 Graham Packaging Pet Technologies Inc. Production continue d'ebauches de contenants
WO2005102642A1 (fr) * 2004-04-23 2005-11-03 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Methode et equipement pour transferer des corps de matiere polymere fondue dans des cavites formant des d'une machine de moulage
EP1652645A1 (fr) * 2003-07-14 2006-05-03 Toyo Seikan Kaisya, Ltd. Procede et dispositif pour inserer de force une goutte dans une machine de moulage par compression et procede et dispositif de type a alimentation en gouttes avec suivi du deplacement de matrice de moulage
WO2007045577A2 (fr) * 2005-10-21 2007-04-26 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Appareils et procede de formage d'objets
FR2899836A1 (fr) * 2006-04-14 2007-10-19 Olilab Llc Procede de production en continu par injection-compression de preformes pour la fabrication d'emballages et installation de mise-en-oeuvre
EP1849573A1 (fr) * 2005-01-21 2007-10-31 Toyo Seikan Kaisha, Ltd. Procede et dispositif d' alimentation de resine fondue et procede de fabrication de piece moulee au moyen de ladite resine fondue
EP1985430A1 (fr) * 2006-02-17 2008-10-29 Toyo Seikan Kaisya, Ltd. Procédé et appareil permettant d'injecter une masse de résine fondue
EP2206592A1 (fr) * 2007-10-24 2010-07-14 Toyo Seikan Kaisya, Ltd. Appareil de moulage par compression et procédé de moulage par compression
US8007266B2 (en) 2004-04-23 2011-08-30 Sacmi Cooperative Meccanici Imola Societa' Cooperativa Compression moulding apparatus
EP2436497A1 (fr) * 2004-04-23 2012-04-04 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Appareil de moulage par compression d'articles en matiére plastique
ITMO20110198A1 (it) * 2011-08-02 2013-02-03 Sacmi Dispositivo per separare dosi di materiale plastico
CN103862590A (zh) * 2012-12-18 2014-06-18 克朗斯公司 用热塑性塑料材料生产塑料材料预成型件的设备和方法

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US4979282A (en) * 1985-06-24 1990-12-25 Tredegar Molder Products Company Apparatus for the application of a gasket inside closures comprising a cup, such as screw-on and crown caps
US5643620A (en) * 1995-08-09 1997-07-01 Electra Form, Inc. Continuous injection molding system
US5807592A (en) * 1994-05-23 1998-09-15 Sacmi Cooperative Meccanici Imola S.C.R.L. Apparatus for pressure-molding items made of plastics, such as caps for closing containers
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Publication number Priority date Publication date Assignee Title
GB805022A (en) * 1956-12-18 1958-11-26 Continental Can Co Crown cap lining machine
US3360827A (en) * 1965-05-10 1968-01-02 Ernest O. Aichele Plastic dispensing means
US4336011A (en) * 1978-05-18 1982-06-22 National Can Corporation Apparatus for applying liners to closures
US4643581A (en) * 1983-10-04 1987-02-17 Krauss-Maffei, A.G. Piston metering apparatus of a reaction injection molding machine
US4979282A (en) * 1985-06-24 1990-12-25 Tredegar Molder Products Company Apparatus for the application of a gasket inside closures comprising a cup, such as screw-on and crown caps
US5807592A (en) * 1994-05-23 1998-09-15 Sacmi Cooperative Meccanici Imola S.C.R.L. Apparatus for pressure-molding items made of plastics, such as caps for closing containers
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Cited By (30)

* Cited by examiner, † Cited by third party
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WO2003090990A1 (fr) * 2002-04-23 2003-11-06 Sacmi Cooperativa Meccanici Imola S.C.R.L. Appareil de moulage par compression d'articles en plastique
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EP1849573A1 (fr) * 2005-01-21 2007-10-31 Toyo Seikan Kaisha, Ltd. Procede et dispositif d' alimentation de resine fondue et procede de fabrication de piece moulee au moyen de ladite resine fondue
EP1849573A4 (fr) * 2005-01-21 2010-05-19 Toyo Seikan Kaisha Ltd Procede et dispositif d' alimentation de resine fondue et procede de fabrication de piece moulee au moyen de ladite resine fondue
WO2007045577A2 (fr) * 2005-10-21 2007-04-26 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Appareils et procede de formage d'objets
WO2007045577A3 (fr) * 2005-10-21 2007-10-18 Sacmi Appareils et procede de formage d'objets
EP1985430A1 (fr) * 2006-02-17 2008-10-29 Toyo Seikan Kaisya, Ltd. Procédé et appareil permettant d'injecter une masse de résine fondue
EP1985430A4 (fr) * 2006-02-17 2010-06-02 Toyo Seikan Kaisha Ltd Procédé et appareil permettant d'injecter une masse de résine fondue
FR2899836A1 (fr) * 2006-04-14 2007-10-19 Olilab Llc Procede de production en continu par injection-compression de preformes pour la fabrication d'emballages et installation de mise-en-oeuvre
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US7993564B2 (en) 2006-04-14 2011-08-09 Olilab Ltd. Method and installation producing preforms
US8911225B2 (en) 2007-10-24 2014-12-16 Toyo Seikan Kaisha, Ltd. Compression-molding apparatus and compression-molding method
EP2206592A1 (fr) * 2007-10-24 2010-07-14 Toyo Seikan Kaisya, Ltd. Appareil de moulage par compression et procédé de moulage par compression
EP2206592A4 (fr) * 2007-10-24 2011-04-20 Toyo Seikan Kaisha Ltd Appareil de moulage par compression et procédé de moulage par compression
ITMO20110198A1 (it) * 2011-08-02 2013-02-03 Sacmi Dispositivo per separare dosi di materiale plastico
WO2013017968A3 (fr) * 2011-08-02 2013-05-02 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Dispositif pour séparer des doses de matières plastiques
CN103842139A (zh) * 2011-08-02 2014-06-04 萨克米伊莫拉机械合作社合作公司 用于分离塑料材料剂量的装置
US9434092B2 (en) 2011-08-02 2016-09-06 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Device for separating doses of plastics material
CN103862590A (zh) * 2012-12-18 2014-06-18 克朗斯公司 用热塑性塑料材料生产塑料材料预成型件的设备和方法
DE102012112491A1 (de) * 2012-12-18 2014-06-18 Krones Ag Vorrichtung und Verfahren zum Herstellen von Kunststoffvorformlingen aus einem thermoplastischen Kunststoff
EP2746026A3 (fr) * 2012-12-18 2015-07-08 Krones AG Dispositif et procédé de fabrication de préformes en matière synthétique à partir d'une matière synthétique thermoplastique
US9381674B2 (en) 2012-12-18 2016-07-05 Krones Ag Apparatus and method for producing plastics material pre-forms from a thermoplastic plastics material

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ITRM20010724A1 (it) 2003-06-09

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