A press (10) for manufacturing a sandwich panel comprises a first and second press plate (12; 14) that are movable with respect to one another. The press tools (12; 14) are provided with at least one internal flow channel (16). The press (10) has a fluid circulation loop for heating and for cooling. The press comprises a heater (34) for generating hot pressurized water in communication with the press tools (12, 14), as well as an outlet pressure control valve (58) configured for conversion of hot pressurized water into steam in communication with the press tools (12, 14) during initial fast cooling.
The invention relates to a method of manufacturing a sandwich panel comprises the steps of:
The invention relates to a method of manufacturing a sandwich panel comprises the steps of:
a) providing a plate-shaped assembly of a first cover part and a second cover part and between these cover parts a core part of a thermoplastic material containing a physical blowing agent,
The invention relates to a method of manufacturing a sandwich panel comprises the steps of:
a) providing a plate-shaped assembly of a first cover part and a second cover part and between these cover parts a core part of a thermoplastic material containing a physical blowing agent,
b) heating the assembly resulting from step a) under pressure between press tools in a press to a foaming temperature below the glass transition temperature of the thermoplastic material in the core part, thereby effecting adhesion of the foamed core part to the first and second cover parts
The invention relates to a method of manufacturing a sandwich panel comprises the steps of:
a) providing a plate-shaped assembly of a first cover part and a second cover part and between these cover parts a core part of a thermoplastic material containing a physical blowing agent,
b) heating the assembly resulting from step a) under pressure between press tools in a press to a foaming temperature below the glass transition temperature of the thermoplastic material in the core part, thereby effecting adhesion of the foamed core part to the first and second cover parts
c) foaming the thermoplastic material in the core part under pressure and at the foaming temperature wherein the spacing between the press tools is increased;
The invention relates to a method of manufacturing a sandwich panel comprises the steps of:
a) providing a plate-shaped assembly of a first cover part and a second cover part and between these cover parts a core part of a thermoplastic material containing a physical blowing agent,
b) heating the assembly resulting from step a) under pressure between press tools in a press to a foaming temperature below the glass transition temperature of the thermoplastic material in the core part, thereby effecting adhesion of the foamed core part to the first and second cover parts
c) foaming the thermoplastic material in the core part under pressure and at the foaming temperature wherein the spacing between the press tools is increased;
d) a cooling step of cooling the foamed sandwich panel resulting from step c), while the sandwich panel is maintained under pressure between the press tools;
The invention relates to a method of manufacturing a sandwich panel comprises the steps of:
a) providing a plate-shaped assembly of a first cover part and a second cover part and between these cover parts a core part of a thermoplastic material containing a physical blowing agent,
b) heating the assembly resulting from step a) under pressure between press tools in a press to a foaming temperature below the glass transition temperature of the thermoplastic material in the core part, thereby effecting adhesion of the foamed core part to the first and second cover parts
c) foaming the thermoplastic material in the core part under pressure and at the foaming temperature wherein the spacing between the press tools is increased;
d) a cooling step of cooling the foamed sandwich panel resulting from step c), while the sandwich panel is maintained under pressure between the press tools;
e) removing the thus cooled sandwich panel from the press; and
The invention relates to a method of manufacturing a sandwich panel comprises the steps of:
a) providing a plate-shaped assembly of a first cover part and a second cover part and between these cover parts a core part of a thermoplastic material containing a physical blowing agent,
b) heating the assembly resulting from step a) under pressure between press tools in a press to a foaming temperature below the glass transition temperature of the thermoplastic material in the core part, thereby effecting adhesion of the foamed core part to the first and second cover parts
c) foaming the thermoplastic material in the core part under pressure and at the foaming temperature wherein the spacing between the press tools is increased;
d) a cooling step of cooling the foamed sandwich panel resulting from step c), while the sandwich panel is maintained under pressure between the press tools;
e) removing the thus cooled sandwich panel from the press; and
f) drying the sandwich panel thus obtained;
The invention relates to a method of manufacturing a sandwich panel comprises the steps of:
a) providing a plate-shaped assembly of a first cover part and a second cover part and between these cover parts a core part of a thermoplastic material containing a physical blowing agent,
b) heating the assembly resulting from step a) under pressure between press tools in a press to a foaming temperature below the glass transition temperature of the thermoplastic material in the core part, thereby effecting adhesion of the foamed core part to the first and second cover parts
c) foaming the thermoplastic material in the core part under pressure and at the foaming temperature wherein the spacing between the press tools is increased;
d) a cooling step of cooling the foamed sandwich panel resulting from step c), while the sandwich panel is maintained under pressure between the press tools;
e) removing the thus cooled sandwich panel from the press; and
f) drying the sandwich panel thus obtained;
wherein the cooling step d) comprises a first substep d1) of cooling the foamed assembly from the foaming temperature to an intermediate temperature in the range of 70-100° C. at a first cooling rate and a second substep d2) of cooling the foamed assembly from the intermediate temperature to ambient temperature at a second cooling rate, the second cooling rate is less than the first cooling rate.
B29C 44/34 - Component parts, details or accessoriesAuxiliary operations
B32B 5/20 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by features of a layer containing foamed or specifically porous material foamed in situ
B29C 44/12 - Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
B32B 5/02 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by structural features of a layer comprising fibres or filaments
B32B 5/24 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous one layer being a fibrous or filamentary layer
B32B 15/04 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance
B32B 27/06 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance
B32B 27/20 - Layered products essentially comprising synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
B32B 27/28 - Layered products essentially comprising synthetic resin comprising copolymers of synthetic resins not wholly covered by any one of the following subgroups
4.
Press for in-situ manufacturing a thermoplastic sandwich panel
A press (10) for manufacturing a sandwich panel comprises a first and second press plate (12; 14) that are movable with respect to one another. The press (10) has a fluid circulation loop for heating and cooling the press plates (12; 14). The fluid circulation N loop comprises a heater (22) for generating a hot fluid connected to a fluid supply conduit (24) in fluid communication with an inlet (18) of at least one internal flow channel (16) in each press plate (12; 14) and connected to a fluid return conduit (26) in fluid communication with an outlet (20) of the at least one internal flow channel (16). The fluid circulation loop is also provided with a controlled expansion valve (34) for cooling by conversion of hot pressurized water into steam, and a water source (38) for slow cooling.
B29C 44/10 - Applying counter-pressure during expanding
B29C 44/34 - Component parts, details or accessoriesAuxiliary operations
B29C 44/44 - Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in the form of expandable particles or beads
B32B 5/20 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by features of a layer containing foamed or specifically porous material foamed in situ
B32B 27/06 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance
A press (10) for manufacturing a sandwich panel comprises a first and second press plate (12; 14) that are movable with respect to one another. The press (10) has a fluid circulation loop for heating and cooling the press plates(12; 14). The fluid circulation loop comprises a heater (22) for generating a hot fluid connected to a fluid supply conduit(24)in fluid communication with an inlet(18) of at least one internal flow channel (16) in each press plate (12; 14) and connected to a fluid return conduit(26) in fluid communication with an outlet (20) of the at least one internal flow channel(16). The fluid circulation loop is also provided with a controlled expansion valve (34) for cooling by conversion of hot pressurized water into steam, and a water source (38) for slow cooling.
A press (10) for manufacturing a sandwich panel comprises a first and second press plate (12; 14) that are movable with respect to one another. The press (10) has a fluid circulation loop for heating and cooling the press plates(12; 14). The fluid circulation loop comprises a heater (22) for generating a hot fluid connected to a fluid supply conduit(24)in fluid communication with an inlet(18) of at least one internal flow channel (16) in each press plate (12; 14) and connected to a fluid return conduit(26) in fluid communication with an outlet (20) of the at least one internal flow channel(16). The fluid circulation loop is also provided with a controlled expansion valve (34) for cooling by conversion of hot pressurized water into steam, and a water source (38) for slow cooling.
B29C 33/38 - Moulds or coresDetails thereof or accessories therefor characterised by the material or the manufacturing process
C08J 9/14 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
B29K 71/00 - Use of polyethers as moulding material
B29K 79/00 - Use of other polymers having nitrogen, with or without oxygen or carbon only, in the main chain, as moulding material
B29K 81/00 - Use of polymers having sulfur, with or without nitrogen, oxygen or carbon only, in the main chain, as moulding material
f) drying the sandwich panel thus obtained;
wherein the cooling step d) comprises.a first substep d1) of cooling the foamed assembly from the foaming temperature to an intermediate temperature in the range of 70-100° C. at a first cooling rate and a second substep d2) of cooling the foamed assembly from the intermediate temperature to ambient temperature at a second cooling rate, the second cooling rate is less than the first cooling rate.
B29C 44/34 - Component parts, details or accessoriesAuxiliary operations
B32B 5/20 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by features of a layer containing foamed or specifically porous material foamed in situ
B29C 44/12 - Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
B32B 5/02 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by structural features of a layer comprising fibres or filaments
B32B 5/24 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous one layer being a fibrous or filamentary layer
B32B 15/04 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance
B32B 27/06 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance
B32B 27/20 - Layered products essentially comprising synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
B32B 27/28 - Layered products essentially comprising synthetic resin comprising copolymers of synthetic resins not wholly covered by any one of the following subgroups
B29K 75/00 - Use of polyureas or polyurethanes as moulding material
The invention relates to a method of manufacturing a sandwich panel comprises the steps of: a) providing a plate-shaped assembly of a first cover part and a second cover part and between these cover parts a core part of a thermoplastic material containing a physical blowing agent, b) heating the assembly resulting from step a) under pressure between press tools in a press to a foaming temperature below the glass transition temperature of the thermoplastic material in the core part, thereby effecting adhesion of the foamed core part to the first and second cover parts c) foaming the thermoplastic material in the core part under pressure and at the foaming temperature wherein the spacing between the press tools is increased; d) a cooling step of cooling the foamed sandwich panel resulting from step c), while the sandwich panel is maintained under pressure between the press tools; e) removing the thus cooled sandwich panel from the press; and f) drying the sandwich panel thus obtained; wherein the cooling step d) comprises.a first substep d1) of cooling the foamed assembly from the foaming temperature to an intermediate temperature in the range of 70-100 °C at a first cooling rate and a second substep d2) of cooling the foamed assembly from the intermediate temperature to ambient temperature at a second cooling rate, the second cooling rate is less than the first cooling rate.
B29C 44/12 - Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
B32B 5/20 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by features of a layer containing foamed or specifically porous material foamed in situ
The invention relates to a method of manufacturing a sandwich panel having an asymmetrical configuration in the thickness direction. This method comprises the steps of: a) providing a plate shaped assembly of a first cover part and a second cover part and between a core part of a thermoplastic material containing a suitable blowing agent, wherein the second cover part is not equal to the first cover part regarding heat transfer properties; b) heating the assembly under pressure between press tools in a press,thereby adhering the foamed core part to the first and second cover parts; c) foaming of the thermoplastic material in the core part under pressure between press tools in the press and at a foaming temperature by increasing the spacing between the press tools in a controlled manner; d) cooling the foamed sandwich panel under pressure between the press tools; e) removing the thus cooled sandwich panel from the press; and optionally f) drying the sandwich panel; wherein during step a) a first compensation part conforming to the heat transfer properties of the second cover part is positioned at the side of the first cover part and/or a second compensation part conforming to the heat transfer properties of the first cover part is positioned at the side of the second cover part, and wherein during or after step e) the first and/or second compensation parts are removed from the sandwich panel.
Method and device for manufacturing a thermoplastic sandwich structure comprising a thermoplastic foam layer and fiber-reinforced thermoplastic cover layers
A method and device for manufacturing a sandwich structure comprising at least one foam layer of a first thermoplastic comprising a chemical blowing agent and two fibre-reinforced cover layers of a second thermoplastic. The decomposition temperature of the chemical blowing agent is higher than the melting point or range of the first thermoplastic. The method comprises a series of steps performed on a starting structure including heating under pressure in order to cause decomposition of the blowing agent, cooling, foaming and further cooling in contact with the press tools.
B29C 44/10 - Applying counter-pressure during expanding
B29C 44/12 - Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
B29C 44/32 - Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements
B32B 5/20 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by features of a layer containing foamed or specifically porous material foamed in situ
B29C 44/00 - Shaping by internal pressure generated in the material, e.g. swelling or foaming
A method and device for manufacturing a sandwich structure comprising at least one foam layer of a first thermoplastic comprising a chemical blowing agent and two cover layers. The decomposition temperature of the chemical blowing agent is higher than the melting point or range of the first thermoplastic. The method comprises a series of steps performed on an advancing starting structure including heating under pressure in order to cause decomposition of the blowing agent, intermediate cooling, foaming at a constant volume and further cooling.
B29C 44/12 - Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
B29C 44/34 - Component parts, details or accessoriesAuxiliary operations
B32B 5/20 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by features of a layer containing foamed or specifically porous material foamed in situ
B29C 44/46 - Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
B29C 44/10 - Applying counter-pressure during expanding
B29C 43/30 - Making multilayered or multicoloured articles
B32B 38/00 - Ancillary operations in connection with laminating processes
A method and device (100) for manufacturing a sandwich structure (10) comprising at least one foam layer (12; 12a, 12b) of a first thermoplastic comprising a chemical blowing agent and two cover layers (20, 22). The decomposition temperature of the chemical blowing agent is higher than the melting point or range of the first thermoplastic. The method comprises a series of steps performed on an advancing starting structure (40) including heating under pressure in order to cause decomposition of the blowing agent, intermediate cooling, foaming at a constant volume and further cooling.
B29C 44/10 - Applying counter-pressure during expanding
B29C 44/32 - Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements
14.
METHOD AND DEVICE FOR MANUFACTURING A THERMOPLASTIC SANDWICH STRUCTURE COMPRISING A THERMOPLASTIC FOAM LAYER AND FIBER-REINFORCED THERMOPLASTIC COVER LAYERS
A method and device (100) for manufacturing a sandwich structure (10) comprising at least one foam layer (12; 12a, 12b) of a first thermoplastic comprising a chemical blowing agent and two fibre- reinforced cover layers (20, 22) of a second thermoplastic. The decomposition temperature of the chemical blowing agent is higher than the melting point or range of the first thermoplastic. The method comprises a series of steps performed on a starting structure (40) including heating under pressure in order to cause decomposition of the blowing agent, cooling, foaming and further cooling in contact with the press tools.
An exemplary method for manufacturing and reinforcing a corner in an object made from a sandwich structure, having a thermoplastic core layer (18), which is arranged between two cover layers (16), at least one of which is a plastic cover layer, which method includes the steps of: producing an object including a corner between two object parts; positioning a thermoplastic core part (24) and an additional fiber-reinforced thermoplastic layer (26) in the corner, which thermoplastic core part has a shape adapted to the corner, in such a manner that the additional fiber-reinforced thermoplastic layer (26) substantially covers the exposed surface of the core part (24); and connecting a cover layer (16) of the sandwich structure to the additional fiber-reinforced thermoplastic layer (26).
B32B 1/04 - Layered products essentially having a general shape other than plane characterised by feature of form at particular places, e.g. in edge regions
B32B 3/02 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
B29C 53/36 - Bending and joining, e.g. for making hollow articles
B29C 65/00 - Joining of preformed partsApparatus therefor
16.
Sandwich structure with a high load-bearing capacity, as well as methods for the manufacture thereof
A sandwich structure based on a composite panel made of a thermoplastic core layer connected to at least one fiber-reinforced thermoplastic layer, in particular in-situ manufactured sandwich panels, comprises a thermoplastic core, which is arranged between two cover layers, in which the core is reinforced with fiber-reinforced thermoplastic reinforcing ribs which extend between the cover layers. Preferred methods for the manufacture are also described.
B29C 65/00 - Joining of preformed partsApparatus therefor
B31B 1/60 - Uniting opposed surfaces or edges; Taping
B32B 37/00 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
B32B 5/00 - Layered products characterised by the non-homogeneity or physical structure of a layer
B32B 7/00 - Layered products characterised by the relation between layers Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties Layered products characterised by the interconnection of layers
B32B 3/04 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by a layer folded at the edge, e.g. over another layer
B32B 3/00 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form
B32B 1/00 - Layered products having a non-planar shape
B32B 3/12 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. apertured or formed of separate pieces of material characterised by a layer of regularly-arranged cells whether integral or formed individually or by conjunction of separate strips, e.g. honeycomb structure
B29C 44/56 - After-treatment of articles, e.g. for altering the shape
B29C 67/00 - Shaping techniques not covered by groups , or
B29C 69/00 - Combinations of shaping techniques not provided for in a single one of main groups , e.g. associations of moulding and joining techniquesApparatus therefor
B29D 99/00 - Subject matter not provided for in other groups of this subclass
B32B 5/14 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by a layer differing constitutionally or physically in different parts, e.g. denser near its faces
B32B 5/18 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by features of a layer containing foamed or specifically porous material
B32B 5/20 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by features of a layer containing foamed or specifically porous material foamed in situ
B32B 27/06 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance
B32B 27/28 - Layered products essentially comprising synthetic resin comprising copolymers of synthetic resins not wholly covered by any one of the following subgroups
B32B 3/08 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
B29C 47/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor (extrusion blow-moulding B29C 49/04)
B29C 47/02 - incorporating preformed parts or layers, e.g. extrusion moulding around inserts or for coating articles
B29K 105/04 - Condition, form or state of moulded material cellular or porous
B29K 105/06 - Condition, form or state of moulded material containing reinforcements, fillers or inserts
The invention relates to a method for manufacturing and reinforcing a corner in an object made from a sandwich structure, comprising a thermoplastic core layer (18), which is arranged between two cover layers (16), at least one of which is a plastic cover layer, which method comprises the steps of : Producing an object comprising a corner between two object parts; positioning a thermoplastic core part (24) and an additional fibre-reinforced thermoplastic layer (26) in the corner, which thermoplastic core part has a shape adapted to the corner, in such a manner thta the additional fibre-reinforced thermoplastic layer (26) substantially covers the exposed surface of the core part (24); and connecting a cover layer (16) of the sandwich structure to the additional fibre-reinforced thermoplastic layer (26).
B29C 53/06 - Forming folding lines by pressing or scoring
F16S 1/00 - Sheets, panels, or other members of similar proportionsConstructions comprising assemblies of such members
E04C 2/296 - Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups , , , or of materials covered by one of these groups with a material not specified in one of these groups at least one of the materials being insulating composed of insulating material and non-metallic or unspecified sheet-material
18.
METHOD FOR MANUFACTURING A COMPOSITE CONSTRUCTION ELEMENT
A method for producing a composite construction element (10) comprises the steps of : a) providing a composite construction element (10), which comprises a thermoplastic core layer (12) between two fiber-reinforced thermoplastic cover layers (14, 16); b) providing one or more interruptions (50) in a fiber-reinforced thermoplastic cover layer (14) of the panel (10); c) positioning a fiber-reinforced thermoplastic reinforcing layer (70) over and/or near the interruption (50); d) deforming situated along the interruption (50) and, if desired, the thermoplastic reinforcing layer (70), preferably while simultaneously locally compacting the core layer (12), so that a thermoplastic construction element having a recess which is delimited by fiber-reinforced thermoplastic walls is obtained.
B29C 53/06 - Forming folding lines by pressing or scoring
B29C 59/02 - Surface shaping, e.g. embossingApparatus therefor by mechanical means, e.g. pressing
B29C 69/00 - Combinations of shaping techniques not provided for in a single one of main groups , e.g. associations of moulding and joining techniquesApparatus therefor
19.
SANDWICH STRUCTURE WITH A HIGH LOAD-BEARING CAPACITY, AS WELL AS METHODS FOR THE MANUFACTURE THEREOF
A sandwich structure (40) based on a composite panel (10) made of a thermoplastic core layer (12) connected to at least one fiber-reinforced thermoplastic layer (14, 16), in particular in-situ manufactured sandwich panels (10), comprises a thermoplastic core (42), which is arranged between two cover layers (30), in which the core (42) is reinforced with fiber-reinforced thermoplastic reinforcing ribs (44) which extend between the cover layers (30). Preferred methods for the manufacture are also described.
B29D 99/00 - Subject matter not provided for in other groups of this subclass
B29C 44/56 - After-treatment of articles, e.g. for altering the shape
B29C 67/00 - Shaping techniques not covered by groups , or
B29C 69/00 - Combinations of shaping techniques not provided for in a single one of main groups , e.g. associations of moulding and joining techniquesApparatus therefor
B32B 3/18 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. apertured or formed of separate pieces of material characterised by an internal layer formed of separate pieces of material
E04C 2/296 - Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups , , , or of materials covered by one of these groups with a material not specified in one of these groups at least one of the materials being insulating composed of insulating material and non-metallic or unspecified sheet-material
20.
THERMOPLASTIC CONSTRUCTION ELEMENTS AND METHODS OF COUPLING THEREOF
The invention firstly relates to a method for coupling thermoplastic construction elements, such as sandwich panels, in which a thermoplastic element (10) comprises a thermoplastic core layer (12) between two fiber-reinforced thermoplastic cover layers (14, 16), which method comprises the steps of : 1) providing a first thermoplastic construction element (10a) with a tongue connection piece (100a); 2) providing a second thermoplastic construction element (10b) with a groove connection piece (156); and 3) positioning the tongue connection piece (100a) of the first element (10a) into the groove connection piece (156) of the second element (10b).
B29C 65/56 - Joining of preformed partsApparatus therefor using mechanical means
B29C 67/00 - Shaping techniques not covered by groups , or
E04C 2/296 - Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups , , , or of materials covered by one of these groups with a material not specified in one of these groups at least one of the materials being insulating composed of insulating material and non-metallic or unspecified sheet-material
patents
