WO2011134973A1 - Procédé de production d'un jet de pulvérisation contenant une charge - Google Patents

Procédé de production d'un jet de pulvérisation contenant une charge Download PDF

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Publication number
WO2011134973A1
WO2011134973A1 PCT/EP2011/056608 EP2011056608W WO2011134973A1 WO 2011134973 A1 WO2011134973 A1 WO 2011134973A1 EP 2011056608 W EP2011056608 W EP 2011056608W WO 2011134973 A1 WO2011134973 A1 WO 2011134973A1
Authority
WO
WIPO (PCT)
Prior art keywords
gas
filler
flow channel
channel
reactive
Prior art date
Application number
PCT/EP2011/056608
Other languages
German (de)
English (en)
Inventor
Hans-Guido Wirtz
Stephan Schleiermacher
Roger Scholz
Frank Grimberg
Achim Symannek
Heike Niederelz
Original Assignee
Bayer Materialscience Ag
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 Bayer Materialscience Ag filed Critical Bayer Materialscience Ag
Priority to MX2012012603A priority Critical patent/MX2012012603A/es
Priority to KR1020127028261A priority patent/KR20130067260A/ko
Publication of WO2011134973A1 publication Critical patent/WO2011134973A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/76—Mixers with stream-impingement mixing head
    • B29B7/7663—Mixers with stream-impingement mixing head the mixing head having an outlet tube with a reciprocating plunger, e.g. with the jets impinging in the tube
    • B29B7/7668—Mixers with stream-impingement mixing head the mixing head having an outlet tube with a reciprocating plunger, e.g. with the jets impinging in the tube having a second tube intersecting the first one with the jets impinging in the second tube
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/76—Mixers with stream-impingement mixing head
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/40—Mixers using gas or liquid agitation, e.g. with air supply tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/40—Mixers using gas or liquid agitation, e.g. with air supply tubes
    • B01F33/404—Mixers using gas or liquid agitation, e.g. with air supply tubes for mixing material moving continuously therethrough, e.g. using impinging jets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B29B7/88—Adding charges, i.e. additives
    • B29B7/90—Fillers or reinforcements, e.g. fibres

Definitions

  • the present invention relates to a process for producing a filler-containing spray jet for producing layers and / or moldings from a reactive resin in the weft operation.
  • the mixing of the liquid reactive components takes place in a mixing head, wherein basically between high pressure (HD) and low pressure (LP) mixture can be distinguished.
  • high pressure (HD) and low pressure (LP) mixture can be distinguished.
  • the components are mixed in a pressure range up to 40 bar.
  • the reactive components are released in the desired ratio in the mixing chamber.
  • this mixing then takes place by stirring, for example with an intensive mixer, or static mixer instead.
  • the reactive components circulate in a pressure range up to 250 bar. Upon initiation of a shot, the individual reactive components meet with the corresponding high pressure in the mixing chamber and thereby mix.
  • the spray application is realized both in the HD and in the ND process via downstream atomizer systems.
  • the additives used herein are dispersed in the polyol component of the polyurethane.
  • the problem here is that the additives are not soluble in the corresponding component.
  • the dispersion must therefore be stirred constantly to avoid sedimentation of the solid in the reservoir.
  • melamine in a Polyoldispersion also shows that after sedimentation, the melamine cakes quickly, which makes redispersing much harder, sometimes even impossible.
  • Hollow glass spheres may, for example, float in the reactive component, swelling in the case of wood flour.
  • the physical properties, for example the viscosity, of the corresponding liquid reactive component are also changed by the presence of an additive, as a result of which the miscibility of the reactive components is usually adversely affected.
  • shear forces act on the additives. As a result, they are crushed, which can change their effect in the resin uncontrolled. Sometimes chemical side reactions of the additives with the reactive components can not be excluded.
  • An alternative to the production of filler-containing layers or moldings from a reactive resin is the injection process, in which a filler-containing gas stream is passed into a stream of the reactive components.
  • a spray jet is also understood to mean a jet which consists essentially of fine particles (droplets) of a reactive mixture dispersed in a gas stream, ie, at least two reactive components ,
  • High solids contents with small particle sizes provide the reaction mixture with a large surface area which, due to the short residence time in the mixing zone, can not be sufficiently mixed and wetted with the reaction mixture.
  • solid particles with a high specific weight concentrate due to centrifugal forces on the wall region of the flow channel and can only to a limited extent be mixed with the reaction mixture due to the compression.
  • DE 10 2007 016 785 A1 relates to a method and an apparatus for producing molded parts, comprising a layer of polyurethane in the weft operation, in which a gas stream is introduced into the flow channel of the spraying device at at least two positions.
  • DE 44 17 596 A1 describes a process for producing a mixture consisting of reactive plastic components and fillers.
  • the plastic components are mixed under high pressure in a mixing chamber and get out of this as a plastic component mixture in a arranged at an angle to the mixing chamber outlet pipe, in which the fillers are registered and wetted intensively with the plastic component mixture.
  • the inlet opening for the solid in the flow channel faces the inlet opening for the plastic mixture. H here, however, only fine-grained and free-flowing solids can be processed, which do not tend to clump.
  • EP 0 771 259 B1 comprises an apparatus for producing plastic parts penetrated with long reinforcing fibers. Here a wetting of the solid and liquid components takes place at the discharge itself, but it is not a spray.
  • the object of the invention is therefore a process for the production of layers and / or moldings from a reactive resin in the weft operation, with which different fillers are also present in a high proportion relative to the Amount of reactive resin in both the high pressure (HD) - and in the low pressure (ND) method can be sprayed processed.
  • a uniform wetting of the filler (s) and also a homogeneous distribution of the filler (s) in the final product must be ensured.
  • Another object of the present invention is that the self-cleaning of a flow channel containing at least filler and transport gas is ensured.
  • the object underlying the present invention is achieved by a method for producing a filler-containing resin spray jet, which is characterized in that a. at least one filler and at least one transport gas are passed via at least one inlet 1 into a filler I ka na I 6 and the filler-gas mixture from the Ful Istoff ka na I 6 is passed into a flow channel 9,
  • step d according to the invention comprises the cleaning of the mixing chamber 5 in a manner known per se by means of a liquid cleaning agent and / or compressed air.
  • Fig. 1 shows schematically a device which is suitable for carrying out the method according to the invention.
  • the ejector 2 and the ejector 8 are moved from the firing position into their cleaning position one after the other for cleaning the device according to the invention.
  • the firing position means that the ejector 2 is in the Si n ne the flow direction in front of the at least two inlet openings 4, so that these and the mixing chamber 5 are not obscured by the ejector 2.
  • the ejector 8 is in the firing position in the direction of the flow direction before the at least one Inlet 1.
  • flow channel 9 and filler channel 6 can thus take place a transport and mixing of the components.
  • the mixture can pass freely to the outlet opening 7 and the reactive resin filler mixture are discharged in the shot mode.
  • the mixing chamber 5 After firing the ejector 2 and the ejector 8 are moved successively in the cleaning position in the HD process. As a result, the mixing chamber 5, the Fül Istoff ka na I 6 and the flow channel 9 are mechanically cleaned, the mixing chamber 5 are cleaned by the ejector 2 and the filler channel 6 and the flow channel 9 through the ejector 8.
  • the mixing chamber 5 is cleaned as described above by means of a liquid cleaning agent and / or compressed air.
  • the filler channel 6 and the flow channel 9 are also cleaned in the LP method by the ejector 8, as previously described in the HD method. The movement of the ejector 8 in its cleaning position takes place after the mixing chamber 5 has been cleaned.
  • the process of the present invention is characterized in that a gas stream containing solids passes over the filler channel 6 is introduced into the flow channel 9.
  • the reactive mixture is introduced from the mixing chamber 5 in this stream of filler and transport gas. This results in a mixing of the at least one filler with the reactive mixture, whereby this (r) is wetted by the reactive mixture uniformly / are.
  • a reactive mixture is understood according to the invention to mean a mixture of at least two, in particular liquid, reactive components which are mixed with one another in the region of a mixing chamber in the HD or LP process.
  • a reactive mixture is not in the form of finely dispersed reaction droplets, but is a liquid viscous jet.
  • one or more fillers in the filler channel 6 are transported with the aid of the at least one transport gas.
  • a filler is understood as meaning those substances which impart desired properties, such as mechanical stability or resistance to UV radiation, to the reactive resin layers or moldings to be produced.
  • Corresponding fillers are well described in the prior art.
  • the fillers may be used singly or in combination.
  • the fillers may have the same or different physical properties, such as density, and / or the same or different geometric configuration. If a filler-containing reactive mixture is described below, this includes reactive mixtures which contain one or more fillers.
  • Fig. 1 shows schematically a device with which a method according to the invention can be carried out.
  • Figs. 2a and 2b show an alternative embodiment of a corresponding device.
  • Fig. Figure 1 shows an apparatus comprising a resin spray containing filler
  • mixing chamber 5 and the Fül Istoff ka na I 6 include an angle which is not equal to 180 °, while the Fül Istoff channel 6 and the flow channel 9 form an angle of 180 °.
  • the reactive mixture is formed from the corresponding reactive components.
  • the reactive mixture is a reactive resin, for example a polyurethane or epoxy resin, in particular it is a polyurethane resin. If n subsequently polyurethane resins and polyurethane reactive mixtures are described, this also applies as a synonym for polyester and epoxy resin.
  • At least one polyol is introduced via the at least two inlet openings 4 as a reactive component and at least one isocyanate is introduced into the mixing chamber 5 as a further reactive component.
  • any of the polyols and isocyanates known from the prior art can be used, with which polyurethanes can be prepared.
  • the reactive components of any reactive resin are introduced into the mixing chamber 5 in HD or ND. Here is a thorough mixing of the individual reactive components.
  • the reactive mixture thus produced is introduced into the flow from the filler-gas mixture into the flow channel 9.
  • filler-gas mixture is passed into the flow channel 9.
  • fillings Iko ka na I 6 and flow channel 9 form an angle of 180 °.
  • the filler (s) can / have, for example, a particle size of up to 2 mm, preferably up to 1 mm, particularly preferably up to 600 ⁇ m. They can be introduced into the filler channel 6 individually or in combination with the aid of the transport gas.
  • the filler is preferably fibers, for example glass fibers or mineral fibers, in particular wollastonite, through which the resulting product has improved mechanical stability.
  • a flame retardant material may be used, such as expanded graphite, melamine or aluminum hydroxide.
  • the transport gas for the fuel (s) is inert gas, air, nitrogen and / or carbon dioxide.
  • air is used as a transport gas.
  • the transport gas flows with a volumetric flow rate of up to 700 nl / min, in particular with a volumetric flow rate of up to 500 nl / min, into the filling material ka na I 6 one.
  • the degree of loading of the transport gas defined as the mass of filler in kilograms per kilogram of transport gas, can be up to 30 kg of filler per 1 kg of transport gas, preferably up to 15 kg of filler per 1 kg of transport gas, more preferably up to 12 kg of filler per 1 kg of transport gas ,
  • the device which is suitable for carrying out the method according to the invention, furthermore has at least one gas channel 3, preferably a plurality of gas channels 3, which open into the flow channel 9 in at least one plane.
  • a mixed gas is introduced into the flow channel 9 via this at least one gas channel 3.
  • the filler-reactive mixture and the mineral gas meet. Due to their different flow directions, a further thorough mixing of the reactive mixture with the filler takes place.
  • the at least one gas channel 3 may be arranged such that the flow direction of the gas stream of the mixed gas extends into the flow channel 9 at the inlet of the flow channel 9 at the entry into the flow channel 9.
  • the mixed gas is therefore introduced into the flow channel 9 in such a way that the flow direction of the flow of the mixed gas, when entering the flow channel 9, is outside the center of the flow channel 9.
  • a radial flow in one direction is impressed on the axial flow of the filler-containing reactive gas mixture.
  • a plurality of gas channels 3 are present at different levels and these are arranged so that the flow direction of the gas stream of the mixed gas on entry into the flow channel 9 outside the center of the flow channel 9, this radial flow component preferably in a plane in a direction of rotation and in the following Plane in the opposite direction of rotation.
  • Such a tangential arrangement of the at least one gas channel 3 leads to a turbulence of the filler-containing reactive mixture, whereby a homogeneous wetting of the filler (s) is ensured with the reactive mixture.
  • the at least one gas channel 3 in a plane axially.
  • the mixed gas can then be in the flow channel 9 via the at least two lying on the same plane Gas channels 3 are introduced, that the flow direction of the flow of the mixed gas at entry into the flow channel 9 in the center of the flow channel 9 extends.
  • the inlet openings of the at least two lying on the same plane gas channels 3 are not opposed to each other in the flow channel 9.
  • the mixed gas can then be introduced into the flow channel 9 via the at least two gas passages 3 lying on the same plane so that the flow direction of the flow of the mixed gas passes outside the center of the flow channel 9 when entering the flow channel 9.
  • the at least one gas channel 3 and the flow channel 9 enclose an angle in the range of 0 to 180 °.
  • the choice of the angle can be used to optimize the mixing between the filler and the reactive mixture.
  • a mixed gas can be introduced into the flow channel 9 via the at least one gas channel 3.
  • Inertgas, air, nitrogen and / or carbon dioxide are used as mixed gas, in particular air is used as mixed gas.
  • the mixing chamber 5 and the filler channel 6 and the flow channel 9 after firing in the case of the HD process by the ejector 2 and the ejector 8 or in the LP method by the ejector 8 cleaned.
  • the ejector 2 and the ejector 8 are in the firing position.
  • the length of the ejector 2 according to the invention corresponds to the length of the mixing chamber. 5 up to the inlet in the flow channel 9, so that in the cleaning position of the ejector 2, the mixing chamber 5 completely cleans, but does not extend into the filler channel 6 and the flow channel 9.
  • the abutting surface of the ejector 2 is concave. In particular, it is provided with such a curvature, which corresponds to the cylindrical shape of the Strömu ngskanals 9.
  • the ejector 8 is also in the firing position. After firing, the ejector 8 is brought into the cleaning position in the H D process after the ejector 2, in the N D-process after cleaning the mixing chamber 5, wherein the ejector 8 is at least as long as the filler chamber 6 and the flow channel 9 up to the outlet opening. 7
  • the ejector 8 comprises a sleeve 11 and a core 10 movable therealong.
  • a method according to the invention is characterized in that a pusher 8 designed in two parts as core 10 and sleeve 11 is used, the sleeve 11 in the firing position at the level of the at least one inlet 1 has at least one opening through which the filler-gas mixture is introduced into the filler channel 6 and ends in the direction of flow in front of the junction of the mixing chamber 5 in the flow channel 9, and the core 10th in the firing position in the direction of the flow direction above the at least one opening ends.
  • the mixing chamber 5, the filler material ka na I 6 and the flow channel 9 have a different diameter from one another, wherein preferably the inner diameter of the filler I ka nax Is 6 is smaller than the inner diameter of the flow channel 9 now introduced via the at least one inlet 1, a filler-gas mixture in the filler channel 6, so it comes at the lower end of the sleeve 11 to a turbulence of the filler-gas mixture due to the increase in the diameter.
  • This turbulence leads to an improvement of the mixing of the filler (s) with the reactive mixture flowing out of the mixing chamber 5 and thus to a uniform wetting of the filler (s) with the reactive mixture.
  • the resulting filler-containing reactive gas mixture leaves via an outlet opening 7, the flow channel 9.
  • the flow channel 9 may also have at least one, in particular a plurality of gas channels 3, which are located on the same or different levels.
  • the mixed gas flowing in via the at least one gas channel 3 further agglomerates the filler-containing reactive gas mixture.
  • At the outlet opening 7 then exits a mixture in which the / the filler (s) is completely and evenly wetted with the reactive mixture / are.
  • the outlet opening 7 of a corresponding device can taper in the flow direction.
  • the sleeve 11 is completely inserted into the flow channel 9 at least to the outlet opening 7 for cleaning, so that at least one opening of the sleeve 11 is at the level of the at least one first gas channel 3 in the direction of flow. This allows the cleaning of the inside of the sleeve and the lower surface of the core 10 with a gas flow introduced from the at least one gas channel 3 into the sleeve 11.
  • the core 10 is inserted into the sleeve 11 far enough that the sleeve 11 and the core 10 terminate flat in the flow channel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

La présente invention concerne un procédé de production d'un jet de pulvérisation contenant une charge, permettant de produire des couches et/ou des pièces moulées à partir d'une résine réactive lors de l'injection. Selon un procédé de cette invention, les charges sont uniformément imprégnées de la résine.
PCT/EP2011/056608 2010-04-30 2011-04-27 Procédé de production d'un jet de pulvérisation contenant une charge WO2011134973A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
MX2012012603A MX2012012603A (es) 2010-04-30 2011-04-27 Procedimiento para producir un chorro de pulverizacion que contiene un agente de carga.
KR1020127028261A KR20130067260A (ko) 2010-04-30 2011-04-27 충전제-함유 분사 제트의 제조 방법

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010018946.4 2010-04-30
DE102010018946A DE102010018946A1 (de) 2010-04-30 2010-04-30 Verfahren zur Herstellung eines Feststoff enthaltenden Sprühstrahls

Publications (1)

Publication Number Publication Date
WO2011134973A1 true WO2011134973A1 (fr) 2011-11-03

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/056608 WO2011134973A1 (fr) 2010-04-30 2011-04-27 Procédé de production d'un jet de pulvérisation contenant une charge

Country Status (4)

Country Link
KR (1) KR20130067260A (fr)
DE (1) DE102010018946A1 (fr)
MX (1) MX2012012603A (fr)
WO (1) WO2011134973A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012110407A1 (fr) * 2011-02-15 2012-08-23 Bayer Materialscience Ag Dispositif de pulvérisation pour une résine réactive et procédé de production d'une résine réactive

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3302891A (en) 1961-07-19 1967-02-07 Flintkote Co Apparatus for spraying plastic materials
DE2517864A1 (de) 1974-04-29 1975-11-06 Ransburg Corp Verfahren und vorrichtung zum formen von mehrkomponenten-verbundkoerpern
DE2645937A1 (de) * 1976-10-12 1978-04-13 Elastogran Gmbh Hochdruck-injektionsmischkopf fuer mehrkomponentenkunststoffe, insbesondere polyurethan
DE3909017C1 (fr) 1989-03-18 1990-04-12 Metzeler Schaum Gmbh, 8940 Memmingen, De
DE4010752A1 (de) 1990-04-03 1991-10-10 Metzeler Schaum Gmbh Verfahren zur herstellung eines flammwidrigen, elastischen polyurethan-weichschaumstoffes
DE4417596A1 (de) 1994-05-19 1995-11-23 Krauss Maffei Ag Verfahren und Vorrichtung zum Mischen reaktiver Kunststoffkomponenten mit Füllstoffen
EP0895815A1 (fr) * 1997-08-05 1999-02-10 Afros S.P.A. Procédé et appareil pour la production de polyuréthane
EP0771259B1 (fr) 1995-05-08 2003-08-06 Krauss-Maffei Kunststofftechnik GmbH Dispositif de fabrication de pieces en plastique a fibres de renforcement incorporees
US20070128372A1 (en) * 2005-12-07 2007-06-07 Hennecke Gmbh Process and device for producing coated moldings
EP1458494B1 (fr) 2001-12-14 2008-07-09 Stankiewicz GmbH Procede d'application de couches plastiques par pulverisation
DE102007016785A1 (de) 2007-04-05 2008-10-09 Hennecke Gmbh Verfahren zur Herstellung von Formteilen mit einer Schicht aus Polyurethan
WO2009052990A1 (fr) 2007-10-24 2009-04-30 Bayer Materialscience Ag Dispositif et procédé pour produire des matériaux composites renforcés à base de polyuréthane
WO2009143979A1 (fr) 2008-05-28 2009-12-03 Bayer Materialscience Ag Fabrication d'un jet de projection de pur contenant des solides

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2823189A1 (de) * 1978-05-27 1979-11-29 Desma Werke Gmbh Mischkopf, insbesondere fuer die formschaeumung von polyurethanen

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3302891A (en) 1961-07-19 1967-02-07 Flintkote Co Apparatus for spraying plastic materials
DE2517864A1 (de) 1974-04-29 1975-11-06 Ransburg Corp Verfahren und vorrichtung zum formen von mehrkomponenten-verbundkoerpern
DE2645937A1 (de) * 1976-10-12 1978-04-13 Elastogran Gmbh Hochdruck-injektionsmischkopf fuer mehrkomponentenkunststoffe, insbesondere polyurethan
DE3909017C1 (fr) 1989-03-18 1990-04-12 Metzeler Schaum Gmbh, 8940 Memmingen, De
DE4010752A1 (de) 1990-04-03 1991-10-10 Metzeler Schaum Gmbh Verfahren zur herstellung eines flammwidrigen, elastischen polyurethan-weichschaumstoffes
DE4417596A1 (de) 1994-05-19 1995-11-23 Krauss Maffei Ag Verfahren und Vorrichtung zum Mischen reaktiver Kunststoffkomponenten mit Füllstoffen
EP0771259B1 (fr) 1995-05-08 2003-08-06 Krauss-Maffei Kunststofftechnik GmbH Dispositif de fabrication de pieces en plastique a fibres de renforcement incorporees
EP0895815A1 (fr) * 1997-08-05 1999-02-10 Afros S.P.A. Procédé et appareil pour la production de polyuréthane
EP1458494B1 (fr) 2001-12-14 2008-07-09 Stankiewicz GmbH Procede d'application de couches plastiques par pulverisation
US20070128372A1 (en) * 2005-12-07 2007-06-07 Hennecke Gmbh Process and device for producing coated moldings
DE102007016785A1 (de) 2007-04-05 2008-10-09 Hennecke Gmbh Verfahren zur Herstellung von Formteilen mit einer Schicht aus Polyurethan
WO2009052990A1 (fr) 2007-10-24 2009-04-30 Bayer Materialscience Ag Dispositif et procédé pour produire des matériaux composites renforcés à base de polyuréthane
WO2009143979A1 (fr) 2008-05-28 2009-12-03 Bayer Materialscience Ag Fabrication d'un jet de projection de pur contenant des solides

Also Published As

Publication number Publication date
DE102010018946A1 (de) 2011-11-03
MX2012012603A (es) 2012-12-17
KR20130067260A (ko) 2013-06-21

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