POLYAMIDE MIXTURE

A composition, containing at least 50% by weight of a polyamide fraction which comprises: a) from 50 to 95 parts by weight of a polyamide having as copolymerized units bis(4-aminocyclohexyl)methane (PACM) and a linear dicarboxylic acid having from 8 to 18 C atoms; and b) from 50 to 5 parts by weight of a linear aliphatic polyamide having an average of from 8 to 12 C atoms in the monomer units, where the sum of the parts by weight of a) and b) is 100 is provided. The composition can be processed to give a moulded article having high transparency, high toughness and high resistance to chemicals, to solvents and to stress cracking. 1. A composition , comprising:at least 50% by weight of a polyamide fraction which comprises:a) from 50 to 95 parts by weight of a polyamide having as copolymerized units bis(4-aminocyclohexyl)methane (PACM) and a linear dicarboxylic acid having from 8 to 18 C atoms; andb) from 50 to 5 parts by weight of a linear aliphatic polyamide having an average of from 8 to 12 C atoms in the monomer units,where the sum of the parts by weight of a) and b) is 100.2. The composition of claim 1 , wherein the composition is in a form of a pellet mixture claim 1 , a powder mixture or a blend.3. The composition of claim 1 , wherein the linear dicarboxylic acid is selected from the group consisting of octanedioic acid claim 1 , nonanedioic acid claim 1 , decanedoic acid claim 1 , undecanedoic acid claim 1 , dodecanedoic acid claim 1 , tridecanedoic acid claim 1 , tetradecanedoic acid claim 1 , pentadecanedoic acid claim 1 , hexadecanedoic acid claim 1 , heptadecanedoic acid and octadecanedoic acid.4. The composition of claim 1 , wherein a trans claim 1 ,trans-isomer content of the bis(4-aminocyclohexyl)methane (PACM) is from 30 to 70% by weight of total PACM.5. The composition of claim 1 , wherein an enthalpy of fusion of the polyamide a) claim 1 , measured in accordance with ISO 11357 in the 2nd heating procedure and with a heating and cooling rate of 20° C./ ...

TEMPERATURE-CONTROLLABLE PIPE

A flexible pipe of multilayer structure which comprises the following layers, from the inside to the outside: an interior lining; an inner reinforcement layer; a layer of molded electrically conductive plastic; an outer reinforcement layer; and an exterior sheath. The electrically conductive plastic layer is in electrical contact with the two reinforcement layers, and the two reinforcement layers can be connected to a source of electrical current. It is thus possible to achieve efficient heating of the pipe, and it can therefore be used for conveying oil in cold regions.

Temperature-controllable pipe

A flexible pipe of multilayer structure which comprises the following layers, from the inside to the outside: an interior lining; an inner reinforcement layer; a layer of molded electrically conductive plastic; an outer reinforcement layer; and an exterior sheath. The electrically conductive plastic layer is in electrical contact with the two reinforcement layers, and the two reinforcement layers can be connected to a source of electrical current. It is thus possible to achieve efficient heating of the pipe, and it can therefore be used for conveying oil in cold regions.

Process for producing a metal-plastic hybrid component

The invention provides a process for producing a hybrid component comprising metal and plastic. The process comprises the steps of a) pretreating the metal surface by applying at least one conversion layer, b) applying at least one layer of an adhesion promoter composition and c) bonding the metal to the plastic. The adhesion promoter composition comprises at least one copolyamide-based hotmelt adhesive.

Adhesion promoter compositions and primer compositions for metal-plastic hybrid components

The invention provides an adhesion promoter composition comprising at least one polymer A selected from at least one epoxy resin-phenol resin precondensate, a mixture of at least one epoxy resin-phenol resin precondensate and epoxy resins, a mixture of epoxy resins and phenol resins, polyamide resins and mixtures thereof, and at least one copolyamide-based hotmelt adhesive. Additionally described is a primer composition comprising at least one polymer B selected from saturated polyester resins, epoxy-phenol resin precondensates, mixtures of epoxy resins and phenol resins, and mixtures thereof, at least one crosslinker resin selected from the group consisting of melamine resins, blocked isocyanate resins and mixtures thereof, at least one catalyst, and at least one copolyamide-based hotmelt adhesive.

Device for producing three-dimensional objects layer by layer

A device produces three-dimensional objects layer by layer in a powder bed fusion process. The device includes a building space, at least one energy source, a building area with a building space platform and a building space container laterally confining the building space platform. The building space platform has an upper side, facing a powder, and an underside, facing away from the powder. The upper side of the building space platform includes a material with a thermal conductivity of at least 20 W/(m.K) and the underside of the building space platform includes a material with a thermal conductivity of a maximum of 0.5 W/(m·K), The contact surface of the upper side of the building space platform with respect to the powder or with respect to the cooling medium is raised by at least 20% in comparison with the planar surface of a building space platform. 1. An apparatus for layer-by-layer production of three-dimensional objects in a powder bed fusion method , the apparatus comprising:a construction space,at least one energy source,a construction field having a construction space platform, anda construction space container that laterally bounds the construction space platform,wherein the construction space platform has an upper side facing a powder and a lower side remote from the powder, 'a material having a thermal conductivity of at least 20 W/(m·K), and', 'wherein the upper side comprises'} 'a material having a thermal conductivity of not more than 0.5 W/(m·K), and', 'wherein the lower side comprises'}wherein the contact area of the upper side of the construction space platform with the powder or with a cooling medium is increased by at least 20% compared to a flat surface of the construction space platform.2. The apparatus according to claim 1 , wherein one or more flow machines driven from an outside of the construction space platform are integrated on the lower side.3. The apparatus according to claim 1 , wherein the construction space platform comprisesat ...

TEMPERATURE-CONTROLLABLE PIPE SUITABLE FOR OFFSHORE APPLICATIONS

A flexible pipe which can be heated efficiently, and may therefore be used for conveying oil in cold regions, is provided. The pipe comprises in order from inside to outside: an interior lining; a wound tape; and at least one reinforcement layer. The wound tape contains a first exterior layer of a plastics molding composition that is not electrically conductive; an intermediate layer of an electrically conductive plastics molding composition; and a second exterior layer of a plastics molding composition that is not electrically conductive. A volume resistivity to IEC 60093 of the intermediate layer is in the range from 103 to 1010 m, and the intermediate layer comprises at least two metallic conductors embedded into the plastic molding composition along an entire length of the tape in such a way that, the two conductors do not touch one another.

Metal-plastic hybrid component

The invention relates to a polymer composition, and to a semifinished plastics product, the surface of which has been formed at least to some extent from the polymer composition. The invention further relates to a production process associated therewith for the semifinished plastics product. A feature of the polymer composition is that it comprises from 50 to 99.7% by weight of a polymer and from 0.3 to 20% by weight of one or more adhesion-promoting additives. The invention further relates to plastics-metal hybrid components and production of these.

Temperature-controllable pipe suitable for offshore applications

A flexible pipe which can be heated efficiently, and may therefore be used for conveying oil in cold regions, is provided. The pipe comprises in order from inside to outside: an interior lining; a wound tape; and at least one reinforcement layer. The wound tape contains a first exterior layer of a plastics molding composition that is not electrically conductive; an intermediate layer of an electrically conductive plastics molding composition; and a second exterior layer of a plastics molding composition that is not electrically conductive. A volume resistivity to IEC 60093 of the intermediate layer is in the range from 103 to 1010 m, and the intermediate layer comprises at least two metallic conductors embedded into the plastic molding composition along an entire length of the tape in such a way that, the two conductors do not touch one another.

Adhesion promoter compositions and primer compositions for metal-plastic hybrid components

The invention provides an adhesion promoter composition comprising at least one polymer A selected from at least one epoxy resin-phenol resin precondensate, a mixture of at least one epoxy resin-phenol resin precondensate and epoxy resins, a mixture of epoxy resins and phenol resins, polyamide resins and mixtures thereof, and at least one copolyamide-based hotmelt adhesive. Additionally described is a primer composition comprising at least one polymer B selected from saturated polyester resins, epoxy-phenol resin precondensates, mixtures of epoxy resins and phenol resins, and mixtures thereof, at least one crosslinker resin selected from the group consisting of melamine resins, blocked isocyanate resins and mixtures thereof, at least one catalyst, and at least one copolyamide-based hotmelt adhesive.

Device for producing three-dimensional objects layer by layer

A device produces three-dimensional objects layer by layer in a powder bed fusion process. The device includes a building space, at least one energy source, a building area with a building space platform and a building space container laterally confining the building space platform. The building space platform has an upper side, facing a powder, and an underside, facing away from the powder. The upper side of the building space platform includes a material with a thermal conductivity of at least 20 W/(m·K) and the underside of the building space platform includes a material with a thermal conductivity of a maximum of 0.5 W/(m·K). The contact surface of the upper side of the building space platform with respect to the powder or with respect to the cooling medium is raised by at least 20% in comparison with the planar surface of a building space platform.

Polyamide mixture

A composition, containing at least 50% by weight of a polyamide fraction which comprises: a) from 50 to 95 parts by weight of a polyamide having as copolymerized units bis(4-aminocyclohexyl)methane (PACM) and a linear dicarboxylic acid having from 8 to 18 C atoms; and b) from 50 to 5 parts by weight of a linear aliphatic polyamide having an average of from 8 to 12 C atoms in the monomer units, where the sum of the parts by weight of a) and b) is 100 is provided. The composition can be processed to give a moulded article having high transparency, high toughness and high resistance to chemicals, to solvents and to stress cracking.

ADHESION PROMOTER COMPOSITIONS AND PRIMER COMPOSITIONS FOR METAL-PLASTIC HYBRID COMPONENTS

The invention provides an adhesion promoter composition comprising at least one polymer A selected from at least one epoxy resin-phenol resin precondensate, a mixture of at least one epoxy resin-phenol resin precondensate and epoxy resins, a mixture of epoxy resins and phenol resins, polyamide resins and mixtures thereof, and at least one copolyamide-based hotmelt adhesive. Additionally described is a primer composition comprising at least one polymer B selected from saturated polyester resins, epoxy-phenol resin precondensates, mixtures of epoxy resins and phenol resins, and mixtures thereof, at least one crosslinker resin selected from the group consisting of melamine resins, blocked isocyanate resins and mixtures thereof, at least one catalyst, and at least one copolyamide-based hotmelt adhesive.

Metal-plastic hybrid component

The invention relates to a polymer composition, and to a semifinished plastics product, the surface of which has been formed at least to some extent from the polymer composition. The invention further relates to a production process associated therewith for the semifinished plastics product. A feature of the polymer composition is that it comprises from 50 to 99.7% by weight of a polymer and from 0.3 to 20% by weight of one or more adhesion-promoting additives. The invention further relates to plastics-metal hybrid components and production of these.

SPORTS SHOE COMPRISING STUDS OR STUD RECEIVERS

The invention relates to studded shoes which comprise metal studs and a plastics sole. Studs and sole are connected to one another by a coating of an adhesion promoter composition, wherein the composition comprises at least one copolyamide-based hot-melt adhesive. The studded shoe can be used in the sports sector or hiking sector. 1: A sports shoe comprising:studs or stud receivers,a plastic sole, andan adhesion promoter composition that comprises at least one copolyamide-based hot-melt adhesive;wherein the studs and, respectively, stud receivers and plastic sole are connected to one another at least by a coating of the adhesion promoter composition.2: The sports shoe according to claim 1 , wherein the copolyamide comprises additions of at least one epoxy component and of at least one blocked polyisocyanate claim 1 , as other constituents of the hot-melt adhesive.3: The sports shoe according to claim 1 , that comprises studs claim 1 , wherein the longitudinal direction of the studs is perpendicular claim 1 , almost perpendicular claim 1 , or at an angle claim 1 , to the plane of the sole.4: The sports shoe according to claim 1 , that comprises studs comprising at least one material selected from the group consisting of metal and plastic.5: The sports shoe according to claim 1 , wherein the plastic sole is applied by an injection-moulding process claim 1 , by thermoforming claim 1 , or by hot pressing onto the stud material.6: A plastic shoe sole comprising:a plastic sole,studs or stud receivers, andan adhesion promoter composition that comprises at least one copolyamide-based hot-melt adhesive;wherein the studs and, respectively, stud receivers, and the plastic sole are connected to one another at least by a coating of the adhesion promoter composition.7: A process for producing a sports shoe claim 1 , according to claim 1 , wherein the adhesion promoter composition is applied at least to some extent to the surface of the sole and the sole is then connected to the ...

PROCESS FOR PRODUCING A METAL-PLASTIC HYBRID COMPONENT

The invention provides a process for producing a hybrid component comprising metal and plastic. The process comprises the steps of a) pretreating the metal surface by applying at least one conversion layer, b) applying at least one layer of an adhesion promoter composition and c) bonding the metal to the plastic. The adhesion promoter composition comprises at least one copolyamide-based hotmelt adhesive. 1. Process for producing a hybrid component comprising metal and plastic , comprising the steps ofa. pretreating the metal surface by applying at least one conversion layer,b. applying at least one layer of an adhesion promoter composition andc. bonding the metal to the plastic,characterized in that the adhesion promoter composition comprises at least one copolyamide-based hotmelt adhesive.2. Process according to claim 1 , characterized in that the copolyamide comprises additions of at least one epoxy component and of at least one blocked polyisocyanate claim 1 , as other constituents of the hotmelt adhesive.3. Process according to claim 1 , characterized in that the plastic has been reinforced claim 1 , preferably fibre-reinforced.4. Process according to claim 1 , characterized in that a converting agent is used to produce the conversion layer.5. Process according to claim 4 , characterized in that the converting agent comprises halides.6. Process according to claim 4 , characterized in that the converting agent comprises halide salts claim 4 , complex halides or mixtures of these halides.7. Process according to claim 5 , characterized in that the converting agent comprises fluorides.8. Process according to claim 1 , characterized in that the plastic is applied to the coated metal by injection moulding claim 1 , pressing claim 1 , laminating claim 1 , in-mould coating or (co)extrusion.9. Process according to claim 1 , characterized in that the conversion layer is obtained by a process for treating a surface in which an operating gas is used to produce a plasma jet ...

ADHESION PROMOTER COMPOSITIONS AND PRIMER COMPOSITIONS FOR METAL-PLASTIC HYBRID COMPONENTS

The invention provides an adhesion promoter composition comprising at least one polymer A selected from at least one epoxy resin-phenol resin precondensate, a mixture of at least one epoxy resin-phenol resin precondensate and epoxy resins, a mixture of epoxy resins and phenol resins, polyamide resins and mixtures thereof, and at least one copolyamide-based hotmelt adhesive. Additionally described is a primer composition comprising at least one polymer B selected from saturated polyester resins, epoxy-phenol resin precondensates, mixtures of epoxy resins and phenol resins, and mixtures thereof, at least one crosslinker resin selected from the group consisting of melamine resins, blocked isocyanate resins and mixtures thereof, at least one catalyst, and at least one copolyamide-based hotmelt adhesive. 1. An adhesion promoter composition comprising:a. at least one polymer A selected from the group consisting of at least one epoxy resin-phenol resin precondensate, a mixture of at least one epoxy resin-phenol resin precondensate and epoxy resins, a mixture of epoxy resins and phenol resins, polyamide resins, and mixtures thereof, andb. at least one copolyamide-based hotmelt adhesive.2. The adhesion promoter composition according to claim 1 , wherein the hotmelt adhesive further comprises blocked polyisocyanates and an epoxy component.3. The adhesion promoter composition according to that comprises:a. 5% to 25% by weight of at least one polymer A,b. 5% to 50% by weight of at least one copolyamide-based hotmelt adhesive, and 'based in each case on the total weight of the composition, where the percentages of all the constituents add up to 100% by weight.', 'c. 30% to 80% by weight of at least one organic solvent,'}4. The adhesion promoter composition according to that comprises at least one crosslinker resin selected from the group consisting of melamine resins claim 1 , blocked isocyanate resins and mixtures thereof.5. A primer composition comprising:a. at least one ...

Fibre composite hybrid components

The invention relates to hybrid components comprising at least one fibre composite material as material B and at least one material A. Material A is selected from plastics, metals, ceramic compositions, wood, glass, composite materials, textile fibres and from prefabricated products produced from textile fibres. Material A is bonded to material B by at least one coating of an adhesion promoter composition comprising at least one copolyamide-based hotmelt adhesive.

Device for the layered production of three-dimensional objects and process

Die vorliegende Erfindung betrifft eine Vorrichtung zur schichtweisen Herstellung von dreidimensionalen Objekten in einem Powder Bed Fusion-Verfahren. Die Vorrichtung (20) umfasst einen Bauraum (1), mindestens eine Energiequelle (5), ein Baufeld (4) mit einer Bauraumplattform (6) und einen die Bauraumplattform (6) seitlich einfassenden Bauraumbehälter (9). Die Bauraumplattform (6) weist eine einem Pulver (2) zugewandte Oberseite (12) und eine dem Pulver abgewandte Unterseite (13) auf. Die Oberseite (12) der Bauraumplattform (6) umfasst einen Werkstoff mit einer Wärmeleitfähigkeit von mindestens 20 W/(m·K) und die Unterseite (13) der Bauraumplattform (6) umfasst einen Werkstoff mit einer Wärmeleitfähigkeit von maximal 0,5 W/(m·K). The present invention relates to a device for the layer-by-layer production of three-dimensional objects in a powder bed fusion process. The device (20) comprises a construction space (1), at least one energy source (5), a construction field (4) with a construction space platform (6) and a construction space container (9) enclosing the construction space platform (6) on the side. The installation space platform (6) has an upper side (12) facing a powder (2) and an underside (13) facing away from the powder. The top (12) of the installation space platform (6) comprises a material with a thermal conductivity of at least 20 W / (m · K) and the underside (13) of the installation space platform (6) comprises a material with a thermal conductivity of at most 0.5 W / (m · K).

FLEXIBLE TUBE FOR THE TRANSPORT OF CRUDE OIL OR NATURAL GAS, ITS USE AND ITS HEATING METHOD

TUBULACAO TEMPERAVEL PARA USO NA AREA DE OFFSHORE. A invengao refere-se a um tubo flexfvel que de dentro para fora content as seguintes camadas: - um revestimento interno, bem como; - ao menos uma camada de armapSo; sendo que adicionalmente, entre as duas camadas, encontra-se uma outra camada de uma fita enrolada, contendo esta fita as seguintes camadas: a) uma primeira camada externa de uma massa de moldagem plastics nao condutora de eletricidade, b) uma camada intermediaria de uma massa de moldagem plastica com capacidade condutora eletrica, cuja resistencia de passagem especffica de acordo com a IEC 60093 este na faixa de 10-3 ate 1010 (6mega)m, sendo que na camada intermediaria estao embutidos ao menos dois condutores metalicos ao longo da fita que nao se tocam reciprocamente em toda extensao longitudinal, bem como, c) uma segunda camada externa de uma massa de moldagem plAstica nao condutora de eletricidade, pode ser aquecida de maneira eficiente de maneira que no transporte do petroleo pode ser empregado em regioes frias.

Temperature-controllable pipe for offshore applications

A flexible pipe comprises the following layers, from the inside to the outside: an interior lining, and at least one reinforcement layer. Between two layers, there is also a further layer made of a wound tape. The tape comprises the following layers: a) a first exterior layer made of a plastics moulding composition that is not electrically conductive, b) an intermediate layer made of an electrically conductive plastics moulding composition of which the volume resistivity to IEC 60093 is in the range from 10-3 to 10 10 .OMEGA.m, where at least two metallic conductors have been embedded into the intermediate layer along the tape in such a way that, over the entire length, they do not touch one another, and c) a second exterior layer made of a plastics moulding composition that is not electrically conductive. The flexible pipe can be heated efficiently, and can therefore be used for conveying oil in cold regions.

Hybrid fibre composite material components

Producing a hybrid component comprising metal and plastic, comprises pretreating the metal surface by applying at least one conversion layer, applying at least one layer containing a primer composition, and bonding the metal with the plastic. The primer composition contains at least one hot-melt adhesive based on copolyamide. Independent claims are included for: (1) coating for hybrid devices comprising applying the conversion layer and at least one layer containing hot-melt adhesive composition; and (2) the hybrid device comprising metal and plastic.

Temperable pipe for offshore applications

Ein flexibles Rohr, das von innen nach außen folgende Schichten enthält: - eine innere Auskleidung sowie - mindestens eine Armierungsschicht, wobei sich zusätzlich zwischen zwei Schichten eine weitere Schicht aus einem gewickelten Tape befindet und wobei das Tape folgende Schichten enthält: a) eine erste äußere Schicht (1) aus einer nicht elektrisch leitfähigen Kunststoffformmasse, b) eine Zwischenschicht (2) aus einer elektrisch leitfähigen Kunststoffformmasse, deren spezifischer Durchgangswiderstand gemäß IEC 60093 im Bereich von 10 -3 bis 10 10 Ωm liegt, wobei in die Zwischenschicht (2) mindestens zwei metallische Leiter (4) entlang des Tapes so eingebettet sind, dass sie sich über die gesamte Länge hinweg nicht berühren, sowie c) eine zweite äußere Schicht (3) aus einer nicht elektrisch leitfähigen Kunststoffformmasse, lässt sich effizient beheizen, so dass es bei der Ölförderung in kalten Regionen eingesetzt werden kann. A flexible tube containing the following layers from the inside out: - an inner lining as well at least one reinforcing layer, In addition, there is another layer of a wound tape between two layers and the tape contains the following layers: a) a first outer layer (1) of a non-electrically conductive plastic molding compound, b) an intermediate layer (2) made of an electrically conductive plastic molding compound, the specific volume resistivity according to IEC 60093 in the range of 10 -3 to 10 10 Ωm, wherein in the intermediate layer (2) at least two metallic conductors (4) along the tape so embedded are that they do not touch over the entire length, as well c) a second outer layer (3) of a non-electrically conductive plastic molding compound, Can be heated efficiently, so that it can be used in oil production in cold regions.

Adhesion promoter compositions and primer compositions for metal-plastic hybrid components

Adhesion promoter for metal-plastic hybrid components

The invention relates to a polymer composition and to a plastic semi-finished product whose surface is at least partially formed from said polymer composition. The invention also relates to an associated production method for said plastic semi-finished product. The polymer composition is characterised in that it contains between 50 and 99.7 wt.% of a polymer, and 0.3 to 20 wt.% of one or more adhesion-promoting additives. The invention also relates to plastic-metal hybrid components and to their production.

Sports shoe comprising studs or stud holders

temperable piping for offshore use

tubulação temperavel para uso na área de offshore a invenção refere-se a um tubo flexível que de dentro para fora contém as seguintes camadas: ao menos uma camada de armação; sendo que adicionalmente, entre as duas camadas, encontra-se uma outra camada de uma fita enrolada, contendo esta fita as seguintes camadas: a) uma primeira camada externa de uma massa de moldagem plástica não condutora de eletricidade, b) uma camada intermediária de uma massa de moldagem plástica com capacidade condutora elétrica, cuja resistência de passagem específica de acordo com a iec 60093 está na faixa de 10³ até 1010 qm, sendo que na camada intermediária estão embutidos ao menos dois condutores metálicos ao longo da fita que não se tocam reciprocamente em toda extensão longitudinal, bem como, c) uma segunda camada extérna de urna massa de moldagem plástica não condutora de eletricidade, pode ser aquecida de maneira eficiente de maneira que no transporte do petróleo pode ser empregado em regiões frias

Temperable pipeline for underwater applications

Tubo flexible para el transporte de petróleo crudo o gas natural, que contiene las siguientes capas de dentro hacia fuera: - un revestimiento interno, - al menos una capa de refuerzo, encontrándose adicionalmente entre dos capas una capa adicional constituida por una banda arrollada, caracterizado porque la banda contiene las siguientes capas: a) una primera capa (1) constituida por una masa de moldeo de material sintético no electroconductiva, b) una capa intermedia (2) constituida por una masa de moldeo de material sintético electroconductiva, cuya resistencia de paso específica según IEC 60093 se sitúa en el intervalo de 10-3 a 1010 Ωm, estando alojados en la capa intermedia al menos dos conductores metálicos (4) a lo largo de la banda, de modo que no están en contacto a lo largo de la longitud total, así como c) una segunda capa externa (3) constituida por una masa de moldeo de material sintético no electroconductiva. Flexible tube for the transport of crude oil or natural gas, which contains the following layers from the inside out: - an internal coating, - at least one reinforcement layer, additionally between two layers being an additional layer consisting of a rolled band, characterized because the band contains the following layers: a) a first layer (1) constituted by a molding mass of non-electroconductive synthetic material, b) an intermediate layer (2) constituted by a molding mass of electroconductive synthetic material, whose resistance of specific step according to IEC 60093 is in the range of 10-3 to 1010 Ωm, at least two metal conductors (4) being housed in the intermediate layer, so that they are not in contact along the total length, as well as c) a second outer layer (3) constituted by a molding mass of non-electroconductive synthetic material.

Device for producing three-dimensional objects layer by layer

The present invention relates to a device for producing three-dimensional objects layer by layer in a powder bed fusion process. The device (20) comprises a building space (1), at least one energy source (5), a building area (4) with a building space platform (6) and a building space container (9) laterally confining the building space platform (6). The building space platform (6) has an upper side (12), facing a powder (2), and an underside (13), facing away from the powder. The upper side (12) of the building space platform (6) comprises a material with a thermal conductivity of at least 20 W/(m·K) and the underside (13) of the building space platform (6) comprises a material with a thermal conductivity of a maximum of 0.5 W/(m·K). The contact surface of the upper side (12) of the building space platform (6) with respect to the powder (2) or with respect to the cooling medium is raised by at least 20% in comparison with the planar surface of a building space platform (6).