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WO2015052267A1 - Injecteur permettant le remplissage d'un moule et procédé permettant de produire des pièces moulées à partir de particules polymères expansées - Google Patents

Injecteur permettant le remplissage d'un moule et procédé permettant de produire des pièces moulées à partir de particules polymères expansées Download PDF

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Publication number
WO2015052267A1
WO2015052267A1 PCT/EP2014/071605 EP2014071605W WO2015052267A1 WO 2015052267 A1 WO2015052267 A1 WO 2015052267A1 EP 2014071605 W EP2014071605 W EP 2014071605W WO 2015052267 A1 WO2015052267 A1 WO 2015052267A1
Authority
WO
WIPO (PCT)
Prior art keywords
polymer particles
foamed polymer
filler neck
gas
injector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2014/071605
Other languages
German (de)
English (en)
Other versions
WO2015052267A9 (fr
Inventor
Markus Buscher
Gerhard Weis
Jürgen Bartl
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.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Publication of WO2015052267A1 publication Critical patent/WO2015052267A1/fr
Anticipated expiration legal-status Critical
Publication of WO2015052267A9 publication Critical patent/WO2015052267A9/fr
Ceased legal-status Critical Current

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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
    • 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
    • B29C31/041—Feeding of the material to be moulded, e.g. into a mould cavity using filling or dispensing heads placed in closed moulds or in contact with mould walls
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/36—Feeding the material to be shaped
    • B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
    • B29C44/44—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in solid form
    • B29C44/445—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in solid form in the form of expandable granules, particles or beads
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/3415—Heating or cooling
    • B29C44/3426—Heating by introducing steam in the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B29K2023/12—PP, i.e. polypropylene
    • 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
    • B29K2025/00—Use of polymers of vinyl-aromatic compounds or derivatives thereof as moulding material
    • B29K2025/04—Polymers of styrene
    • B29K2025/06—PS, i.e. polystyrene
    • 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
    • B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2101/00—Use of unspecified macromolecular compounds as moulding material
    • B29K2101/12—Thermoplastic materials

Definitions

  • Injector for filling a mold and method for producing molded parts from foamed polymer particles
  • the invention relates to an injector for filling a mold for the production of molded parts made of foamed polymer particles, comprising a channel for supplying foamed polymer particles, at least one channel for supplying a gas, a filler neck and an injector, wherein the filler neck to the channel for supplying foamed polymer particles and the channel for supplying the gas in front of the filler neck into the channel for supplying foamed polymer particles opens, and wherein the injector piston at its end facing the mold has a cross-sectional area corresponding to the cross-sectional area of the filler neck, and is guided so that polymer particles from the Filler can be pressed into the mold with the aid of the injector piston. Furthermore, the invention relates to a method for producing a molded part of foamed polymer particles.
  • molded parts made of foamed thermoplastic polymer particles there are many applications. For example, they can be used as load carriers, seat cushions, mattresses or even outsoles in shoes.
  • the foamed polymer particles are introduced into a mold and there, on the basis of the existing technology of currently used molding machines, steam is applied or heated, so that they fuse together on their outer side.
  • injectors are used for filling the mold for the production of molded parts made of foamed thermoplastic polymer particles, through which the foamed polymer particles are injected by means of an air flow into the mold.
  • the injector with a filler neck is connected to the mold.
  • An injector piston is guided into the filler neck, so that the particles contained in the filler neck are pressed into the mold.
  • a disadvantage of the injector according to the prior art is that a quantity of foamed polymer particles collects in the filler neck, which can no longer be pressed into the mold with the injector piston. This creates an undesirable nozzle on the molded part.
  • An injector which can be used for filling a mold for the production of molded parts from foamed thermoplastic polymer particles is described, for example, in EP-A 1 813 409. This has a central channel for supplying the foamed polymer particles and an annular gap for blowing in air. A second annular gap is used to introduce water vapor after filling the mold.
  • the object of the present invention is therefore to provide an injector and a method for the production of molded parts made of foamed thermoplastic polymer particles, can be made with the moldings that have no connection at the junction of the injector.
  • an injector for filling a mold for the production of molded parts from foamed polymer particles comprising a channel for supplying foamed polymer particles, a filler neck and an injector piston, wherein the filler neck adjoins the channel for supplying foamed polymer particles and wherein the Jektorkolben has at its end facing the mold a cross-sectional area corresponding to the cross-sectional area of the filler neck, and is guided so that polymer particles from the filler neck by means of the injector piston can be pressed into the mold, wherein the filler neck has at least one opening, through the compressed gas can be introduced into the filler neck.
  • the object is achieved by a method for producing a molded part from foamed polymer particles, comprising the following steps:
  • the introduction of compressed gas into the filler neck avoids that the filler neck also completely fills after filling the mold.
  • the gas stream thus generated ensures a swirling of the foamed polymer particles in the filler neck and, after complete filling of the molding tool, causes a return flow of the foamed polymer particles into the injector.
  • This avoids so many foamed polymer particles collect in the filler neck, that forms after injection of the foamed polymer particles from the filler neck into the mold with the injector piston a nozzle on the thus formed component. In this way, the injector piston can be flush with the inner wall of the mold, so that a smooth surface of the molded part to be produced can be realized.
  • the injector has at least one channel for supplying a gas, which opens into the channel for supplying foamed polymer particles in front of the filler neck.
  • the channel is included for supplying at least one gas, it is possible to support the filling process by supplying compressed gas through the channel for supplying at least one gas.
  • compressed gas is supplied through the at least one channel for supplying a gas after filling the mold.
  • pressurized gas is introduced into the filler neck only through the openings for the introduction of compressed gas.
  • the introduction of pressurized gas through the openings for the introduction of compressed gas into the filler neck and optionally through the at least one channel for supplying a gas serves to generate a counterflow in the channel for supplying the foamed polymer particles, so that transported no further foamed polymer particles in the direction of the mold and accumulate in the area of the filler neck.
  • the transport of the foamed polymer particles through the channel for the supply of the foamed polymer particles preferably also takes place with the aid of a gas.
  • the foamed polymer particles are hereby blown with the gas through the channel for feeding the foamed polymer particles into the mold.
  • any gas that is inert to the polymer used can be used. Suitable gases are, for example, noble gases, nitrogen, carbon dioxide, water vapor or air. Preference is given to nitrogen, water vapor or air and air is particularly preferred as the gas.
  • the compressed gas, which is injected at the end of the filling process through the openings for introducing a gas into the filler neck and optionally the channel for supplying a gas is preferably the same gas as that which is also used to transport the foamed polymer particles. Particularly preferred here is compressed air.
  • the gas used for transporting the foamed polymer particles and the gas supplied through the openings for introducing compressed gas in the filler neck and optionally through the channel for supplying a gas preferably has a pressure in the range of 0 to 8 bar above the atmospheric pressure.
  • the heating of the foamed polymer particles filled into the mold to join them to the molded article can be accomplished in any suitable manner. It is particularly preferred if for this purpose a hot gas stream is passed through the mold.
  • Suitable gas is any gas which is inert to the polymer used. In particular, water is used as the gas.
  • an injector via which also the gas, in particular water vapor, for the connection of the foamed polymer particles is introduced, as for example with the in
  • the injector piston whose diameter is smaller than that of the foamed polymer particles, so that the steam can flow into the mold through the bores in the injector piston.
  • a separate feed device for the water vapor for this purpose, any, known to those skilled supply device can be used, in particular those as they are already used for water vapor addition in the mold.
  • the opening for introducing compressed gas into the filler neck is oriented so that the supplied compressed gas has a velocity component perpendicular to the axis of the filler neck.
  • the velocity component perpendicular to the axis of the filler neck creates a cross flow through which the foamed polymer particles are fluidized.
  • the opening for introducing compressed gas may be oriented perpendicular to the axis of the filler neck or at any angle greater than 0 ° to the axis of the filler neck.
  • the opening for the introduction of compressed gas at an angle in the range of 30 ° to 90 °, in particular in the range of 75 ° to 90 ° and very particularly aligned at an angle of 90 °, ie perpendicular to the axis of the filler neck.
  • the opening for the introduction of compressed gas is aligned at an angle smaller than 90 ° to the axis of the filler neck, the opening may be inclined in any direction. However, a slope is preferably parallel to the axis of the filling opening and it is particularly preferred if the inclination is formed so that the compressed gas is blown in the direction of the mold.
  • the compressed gas is also supplied via the opening for the introduction of compressed gas in the filler neck during the entire filling process.
  • the opening for the introduction of compressed gas is directed in the direction of the injector, it is advantageous to introduce pressurized gas through the opening for introducing pressurized gas into the filler neck, when the mold is already filled, to avoid that the foamed polymer particles before the full filling of the mold are blown away from the mold again.
  • the pressure of the gas in the injector is then higher, while following the filling process, the pressure of the introduced via the opening for introducing pressurized gas into the filler neck gas is increased so that the particles that no longer fit into the mold be blown back into the injector against the delivery process.
  • the opening for introducing the compressed gas into the filler neck is formed perpendicular to the axis of the filling opening, it is advantageous to inject the compressed gas only then, when the mold is already filled or alternatively to increase the pressure or the volume flow of injected into the filler neck compressed gas as soon as the mold is completely filled, to avoid here that the mold is not completely filled or the filling process too long in Claim takes.
  • each opening In order to supply all openings with compressed gas at several openings for introducing the compressed gas, it is possible to provide each opening with its own supply line for pressurized gas. However, it is preferred to feed all openings with a common feed line. For this purpose, it is possible, for example, to connect the at least two openings for supplying pressurized gas into the filler neck with a gas distribution ring enclosing the filler neck. About the gas distribution ring, the individual openings for supplying compressed gas are then supplied with the compressed gas. In order to supply the gas distribution ring with compressed gas, this has at least one port through which compressed gas can be supplied.
  • the injector In order to avoid that the injector piston disturbs the flow of the foamed polymer particles during filling of the mold, it is advantageous to design the injector so that the injector piston is in a position at rest, that is to say during the filling of the mold with the foamed polymer particles , which is located behind an addition point for the foamed polymer particles.
  • the foamed polymer particles can in this case be supplied, for example, by an addition point provided laterally on the injector.
  • the diameter of the channel for supplying the foamed polymer particles is larger than the diameter of the filler neck, it is also possible for the foamed polymer particles to flow around the injector piston during the filling of the molding tool.
  • it is preferable to select the position of the injector piston so that the foamed polymer particles are supplied in front of the injector piston, so that a flow around the injector piston is not required.
  • the channel for supplying gas which is injected at the end of the filling process to generate a flow opposite to the transport direction of the foamed polymer particles, so that no further foamed polymer particles are transported in the direction of the mold, is formed in one embodiment, that the channel for supplying gas coaxially surrounds the channel for supplying foamed polymer particles.
  • the gas is injected at the end of the channel via an annular gap in the channel for supplying the foamed polymer particles. This will ensure a uniform achieved flow so that no dead spaces can arise in which foamed polymer particles can accumulate.
  • At least two channels for the supply of gas are guided parallel to the channel for supplying foamed polymer particles, wherein the channels for supplying gas evenly distributed around the channel for supplying foamed polymer particles are arranged.
  • the evenly distributed arrangement of the channels for supplying gas around the channel for the supply of the foamed polymer particles a uniform flow is generated here in order to avoid the formation of dead spaces in which foamed polymer particles can accumulate.
  • the foamed polymer particles In order to be able to join the foamed polymer particles in the mold by heating, for example by blowing in steam, to form a molded part, it is preferred for the foamed polymer particles to contain a thermoplastic polymer.
  • the thermoplastic polymer used for the foamed thermoplastic polymer particles may be any thermoplastic.
  • the foamed thermoplastic polymer selected from expanded polypropylene (E-PP), expanded polyethylene (E-PE), expanded polystyrene (E-PS) and expanded thermoplastic polyurethane (E-TPU) and mixtures of these polymers or monomer units of these polymers containing copolymers.
  • the foamed thermoplastic polymer is an expanded thermoplastic polyurethane.
  • the foamed thermoplastic polymer may contain any fillers and additives used to process thermoplastic polymers. Corresponding fillers and additives are known to the person skilled in the art.
  • the foamed thermoplastic polymer may include, for example, lubricants, plasticizers, UV stabilizers, colorants, pigments, and any other additives commonly added to polymers.
  • fillers or reinforcing materials for example fibers, in particular short fibers may be contained.
  • the foamed thermoplastic polymer contains an inner or outer lubricant. This is usually added as an additive in the production of the foamed thermoplastic polymer particles.
  • the inner or outer lubricant adheres to the surface of the individual foamed thermoplastic polymer particles and thus promotes a lubricating effect, whereby caking can be prevented.
  • the individual foamed thermoplastic polymer particles generally have an average diameter in the range of 1 to 10 mm, in particular in the range of 1, 5 to 6 mm.
  • the bulk density of the foamed thermoplastic polymer particles is preferably in the Range of 5 to 600 g / l, more preferably in the range of 10 to 500 g / l and in particular in the range of 15 to 200 g / l.
  • the shape of the foamed thermoplastic polymer particles may be arbitrary, for example, cylindrical or spherical or ellipsoidal. It is particularly preferred if the foamed thermoplastic polymer particles have a spherical shape.
  • FIG. 1 shows a first step of a method for producing a molded part from foamed polymer particles
  • FIG. 2 shows a second step of the method for producing a molded part from foamed polymer particles
  • FIG. 3 shows a third step of the method for producing a molded part from foamed polymer particles
  • FIG. 4 shows a fourth step of the method for producing a molded part of foamed polymer particles.
  • FIG. 1 shows a first step of a method for producing a molded part from foamed polymer particles.
  • the foamed polymer particles 1 are fed by means of a gas stream 3 to a central channel 5 of an injector 7.
  • gas can be used any suitable inert to the polymer gas. Suitable gases are, for example, air, nitrogen or water vapor, in particular air.
  • the injector 7 comprises a filler neck 9, with which the injector 7 is connected to a molding tool 1 1.
  • the foamed polymer particles 1 are blown by means of the gas stream 3 through the filler neck 9 in the mold 1 1.
  • the central channel 5 is enclosed by an annular channel 13 through which additional gas is supplied.
  • the annular channel 13 opens in an annular gap 15 at the end of the central channel 5.
  • the annular channel 13 has in the embodiment shown here at its end in the region of the annular gap 15 has a conical diameter constriction 17, in which the diameter decreases to the diameter of the filler neck 9 ,
  • the diameter constriction 17 shown here it is of course also possible to design the diameter constriction in any other geometry. For example, a gradual narrowing in one or more stages is possible.
  • the diameter constriction can also be formed with a radius concave or convex or elliptical, parabolic or hyperbolic. Also mixed forms are possible.
  • gas which is passed through the annular channel 13 preferably the same gas is used, which is also used to transport the foamed polymer particles 1 through the central channel 5.
  • At least one opening 19 for supplying compressed gas is formed in the filler neck 9.
  • a plurality of openings 19 are provided for the supply of compressed gas, wherein the openings may be arranged at any distance or equidistant from each other.
  • the supply of the compressed gas to the openings 19 is preferably via a gas distribution ring 23.
  • the gas distribution ring 23 encloses an inner wall 15 of the filler neck 9 and the openings 19 each open at one end in the gas distribution ring 23. In this way, all openings 19 evenly with compressed gas provided.
  • the compressed gas which is supplied via the openings 19 is also preferably the same as the gas used to transport the foamed polymer particles.
  • the compressed gas supply of the gas distribution ring 23 is preferably effected via a gas connection 25.
  • a gas connection 25 In addition to only one gas connection 25, as shown here, it is also possible to provide a plurality of gas connections to the gas distribution ring 23. However, only one gas connection 25 is preferred.
  • annular gap 15 and the openings 19 it is possible, for example, to close the annular gap 15 and the openings 19 with a grid whose mesh size is smaller than the minimum diameter of the foamed polymer particles.
  • annular gap it is also possible to produce the annular gap with a gap width which is smaller than the minimum diameter of the foamed polymer particles and the openings 19 with a correspondingly small opening diameter.
  • individual channels instead of the annular channel 13, which open directly in front of the filler neck 9 in the central channel 5.
  • FIG. 2 shows a second step of the method according to the invention.
  • the molding tool 1 1 is completely filled with foamed polymer particles 1. Due to the gas flow through the annular channel 13 and annular gap 15, a back flow in the central channel 5, so that no further foamed polymer particles 1 are transported in the direction of the filler neck 9. In addition, with the aid of the injected through the openings 19 compressed gas foamed polymer particles that no longer fit into the mold 1 1, blown out of the filler neck 9 back into the central channel 5. This prevents that foamed polymer particles 1 collect in the filler neck, which would form a nozzle on the molding in the completion of the molding by welding the individual polymer particles.
  • the openings 19 are designed so that the compressed air injected through the openings 19 has a velocity component perpendicular to the axis 27 of the filler neck 9.
  • the openings 19, which are made generally in the form of bores occupy an angle of more than 0 ° to the central axis 27 of the filler neck 9. It is particularly preferred if the openings 19 are perpendicular to the axis 27 of the filler neck 9, as shown here, so that only a velocity component perpendicular to the axis 27 of the filler neck 9 at the outlet from the opening 19 is realized.
  • a deflection of the gas flow supplied through the openings 19 results, for example, from that used to transport the foamed polymer particles 1 Gas flow or by impact of the gas flows through a plurality of openings 19 on each other or on the opening 19 opposite wall of the filler neck.
  • FIG. 1 A third step of the method according to the invention is shown in FIG.
  • an injector piston 29 is moved in the direction of the mold 1 1 through the central channel 5.
  • the injector piston 29 is in a rest position, not shown here.
  • the rest position is preferably located behind an addition point of the foamed polymer particles 1 into the injector 7, so that the injector piston 29 does not disturb the flow of the foamed polymer particles 1 into the mold 11.
  • the filler neck 9 Due to the pressure gas flow through the openings 19, the filler neck 9 is kept free of foamed polymer particles 1. Furthermore, the pressure gas flow through the openings 19 ensures that no foamed polymer particles 1 from the mold 1 1 back into the filler neck 9 and thus enter the injector 7. The mold 1 1 thereby remains optimally filled. Foamed polymer particles 1, which are still within the central channel 5, are blown back through the openings 19 in the filler neck 9 and the annular gap 15 due to the gas flows. As a result, the central channel 5 can largely be kept free of foamed polymer particles 1, so that the injector piston 29 can be moved undisturbed through foamed polymer particles 1 into the filler neck 9.
  • the injector piston 29 is preferably designed such that the cross-sectional area of the end face 31 corresponds to the cross-sectional area of the mouth 21 of the filler neck 9 in the mold 1 1.
  • the mouth 21 of the filler neck 9 can be closed in the mold 1 1 with the injector piston 29 to form a molded part.
  • the end face 31 of the injector piston is designed so that it continues the inner surface of the mold 1 1, so that no discontinuity in the shape of the molded part is formed at the filling point.
  • the injector piston 29 is moved so far into the injector 7 until it closes the mouth 21 of the filler neck 9 in the mold 1 1. This is shown as a fourth step in FIG.
  • gas is also supplied via the annular channel 13 and the annular gap 15. While the injector piston 29 is in its front end position and the mouth 21 of the filler neck 9 closes in the mold 1 1, this gas flows through the central channel 5 away from the mold tool and thus keeps the central channel 5 substantially free of foamed polymer particles. 1 , so that upon a return movement of the injector piston 29 as soon as the molded part is completed and can be removed from the mold, no foamed polymer particles 1 obstruct the path of the injector piston 29. To complete the molding, as soon as the injector piston 29 has reached its front end position, the foamed polymer particles 1 are heated on their surface so far that they can soften and weld together.
  • a hot gas particularly preferably water vapor
  • the mold 1 1 is opened and the molding can be removed.
  • the injector piston 29 is again moved into its rest position so that the process can be repeated after the removal of the molded part and the subsequent closing.

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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

L'invention concerne un injecteur permettant le remplissage d'un moule (11) destiné à produire des pièces moulées à partir de particules polymères expansées (1). Cet injecteur comprend un canal (5) permettant l'amenée de particules polymères expansées (1), une tubulure de remplissage (9) et un piston d'injecteur (29). La tubulure de remplissage (9) est raccordée au canal (5) pour l'amenée de particules polymères expansées (1) et le piston d'injecteur (29) comprend à son extrémité tournée vers le moule (11) une superficie de section (31) correspondant à la superficie de section sur l'embouchure (21) de la tubulure de remplissage (9) dans le moule (11), et est guidé de sorte que les particules de polymère expansées (1) peuvent être pressées hors de la tubulure de remplissage (9) dans le moule (11) à l'aide du piston d'injecteur (29), la tubulure de remplissage (9) comportant au moins une ouverture (19) à travers laquelle le gaz sous pression peut être introduit dans la tubulure de remplissage (9). L'invention concerne en outre un procédé de production d'une pièce moulée à partir de particules polymères expansées.
PCT/EP2014/071605 2013-10-11 2014-10-09 Injecteur permettant le remplissage d'un moule et procédé permettant de produire des pièces moulées à partir de particules polymères expansées Ceased WO2015052267A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP13188313 2013-10-11
EP13188313.4 2013-10-11

Publications (2)

Publication Number Publication Date
WO2015052267A1 true WO2015052267A1 (fr) 2015-04-16
WO2015052267A9 WO2015052267A9 (fr) 2016-06-09

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TW (1) TW201536507A (fr)
WO (1) WO2015052267A1 (fr)

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USD783264S1 (en) 2015-09-15 2017-04-11 Adidas Ag Shoe
US9781970B2 (en) 2013-02-13 2017-10-10 Adidas Ag Cushioning element for sports apparel
US9781974B2 (en) 2012-04-13 2017-10-10 Adidas Ag Soles for sports shoes
US9930928B2 (en) 2013-02-13 2018-04-03 Adidas Ag Sole for a shoe
US9968157B2 (en) 2013-02-13 2018-05-15 Adidas Ag Sole for a shoe
US10039342B2 (en) 2014-08-13 2018-08-07 Adidas Ag Co-molded 3D elements
USD828991S1 (en) 2013-04-12 2018-09-25 Adidas Ag Shoe
FR3066950A1 (fr) * 2017-06-01 2018-12-07 Peugeot Citroen Automobiles Sa Embout d’injecteur de matiere plastique comportant un canal de fuite d’air
USD840136S1 (en) 2016-08-03 2019-02-12 Adidas Ag Shoe midsole
USD840137S1 (en) 2016-08-03 2019-02-12 Adidas Ag Shoe midsole
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3221366A (en) * 1960-03-28 1965-12-07 David Bloom Molding apparatus
DE1936577A1 (de) * 1969-07-18 1971-02-18 Wilhelm Haecker Kg Vorrichtung zum Einfuellen von kleinteiligen,aufschaeumbaren,thermoplastischen Kunststoffen in Formen mit Hilfe von Druckluft
US6220842B1 (en) * 1997-06-18 2001-04-24 Jsp Corporation Production apparatus of expansion-molded article and auxiliary member for transfer of foamed particles
JP2010149297A (ja) * 2008-12-24 2010-07-08 Sekisui Plastics Co Ltd 発泡樹脂成形用原料充填機及び該原料充填機を用いた金型

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3221366A (en) * 1960-03-28 1965-12-07 David Bloom Molding apparatus
DE1936577A1 (de) * 1969-07-18 1971-02-18 Wilhelm Haecker Kg Vorrichtung zum Einfuellen von kleinteiligen,aufschaeumbaren,thermoplastischen Kunststoffen in Formen mit Hilfe von Druckluft
US6220842B1 (en) * 1997-06-18 2001-04-24 Jsp Corporation Production apparatus of expansion-molded article and auxiliary member for transfer of foamed particles
JP2010149297A (ja) * 2008-12-24 2010-07-08 Sekisui Plastics Co Ltd 発泡樹脂成形用原料充填機及び該原料充填機を用いた金型

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FR3066950A1 (fr) * 2017-06-01 2018-12-07 Peugeot Citroen Automobiles Sa Embout d’injecteur de matiere plastique comportant un canal de fuite d’air
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