A thermoplastic sandwich panel comprising a core layer arranged between a first and a second face sheet, wherein the core layer is a thermoplastic foam made of a polymer having a glass transition temperature (core Tg) wherein the face sheets comprise a thermoplastic based matrix polymer (TBMP) and reinforcing fibres; wherein the thermoplastic based matrix polymer has a glass transition temperature (TBMP Tg) equal to or lower than the core Tg.
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 27/04 - Layered products essentially comprising synthetic resin as impregnant, bonding, or embedding substance
B32B 27/08 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of synthetic resin of a different kind
B32B 27/28 - Layered products essentially comprising synthetic resin comprising copolymers of synthetic resins not wholly covered by any one of the following subgroups
Methods of manufacturing composite sandwich components (100) and composite sandwich components overcome drawbacks in the prior art. For example, the large number of resin filled perforations that are unavoidable when manufacturing prior art composite sandwich components is avoided.
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
B29C 70/48 - Shaping or impregnating by compression for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs and impregnating the reinforcements in the closed mould, e.g. resin transfer moulding [RTM]
B29C 70/54 - Component parts, details or accessoriesAuxiliary operations
B32B 3/30 - 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 particular shape of the outline of the cross-section of a continuous layerLayered 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 layer with cavities or internal voids characterised by a layer formed with recesses or projections, e.g. grooved, ribbed
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 5/18 - 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 21/04 - Layered products essentially comprising wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, next to another layer of a specific substance
Methods of manufacturing composite sandwich components (100) and composite sandwich components overcome drawbacks in the prior art. For example, the large number of resin filled perforations that are unavoidable when manufacturing prior art composite sandwich components is avoided.
B29C 70/54 - Component parts, details or accessoriesAuxiliary operations
B29C 70/68 - Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers
B29C 70/76 - Moulding on edges or extremities of the preformed part
B29C 70/84 - Moulding material on preformed parts to be joined
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
B29C 70/02 - Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising combinations of reinforcements and fillers incorporated in matrix material, forming one or more layers, with or without non-reinforced or non-filled layers
A rigid polymer foam having specific characteristics in terms of resin absorption, and a structural element made from such rigid polymer foam and adapted to be used as a core layer in a multilayer structural element.
A process for the production of a polymeric agglomerate obtained from expanded sulfone polymer recovered from extrusion or injection molding processes of sulfone polymer, the agglomeration of said expanded sulfone polymer being effected in said process. With respect to the known art for the production of expanded sulfone polymers that use starting virgin sulfone polymers, the present invention offers the advantage of providing a recovered expanded sulfone polymer which can be used as starting material together with the corresponding virgin sulfone polymer.
C08J 9/33 - Agglomerating foam fragments, e.g. waste foam
B29B 9/08 - Making granules by agglomerating smaller particles
B01J 2/20 - Processes or devices for granulating materials, in generalRendering particulate materials free flowing in general, e.g. making them hydrophobic by expressing the material, e.g. through sieves and fragmenting the extruded length
B29K 81/00 - Use of polymers having sulfur, with or without nitrogen, oxygen or carbon only, in the main chain, as moulding material
A process for the production of expanded material based on sulfone polymers includes an extrusion step in an extruder of virgin sulfone polymer with the injection of at least one expanding agent and in the presence of at least one nucleating agent, and a recycling step of part of the expanded material, which provides a recycled product used as raw material fed to the extruder in combination with the virgin sulfone polymer.
C08J 9/04 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof using blowing gases generated by a previously added blowing agent
B29C 44/34 - Component parts, details or accessoriesAuxiliary operations
C08J 9/00 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof
B29C 44/50 - Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying
B29K 81/00 - Use of polymers having sulfur, with or without nitrogen, oxygen or carbon only, in the main chain, as moulding material
B29K 105/04 - Condition, form or state of moulded material cellular or porous
17 - Rubber and plastic; packing and insulating materials
Goods & Services
Structural cellular foam for sandwich panel construction of wind power apparatus, boats, trains, buses, air crafts and spacecraft; Semi-manufactured foamed plastics for use in construction of wind power apparatus, boats, trains, buses, aircraft, spacecraft, subsea buoyancy and portable housing
8.
Formulation of polymeric mixtures for the production of cross-linked expanded PVC foams and process for producing said foams
A formulation of polymeric mixtures for the production of cross-linked expanded PVC foams, of the type comprising PVC, isocyanates, anhydrides and one or more nucleating agents, wherein the nucleating agents are composed of nucleating materials having a porosity of 1-100 nm, preferably 2-50 nm. With respect to known formulations for the production of cross-linked PVC foams, a formulation according to the invention offers the advantage of obtaining the desired degrees of stabilization, nucleation and expansion, even without the use of diazocompounds.
C08J 9/00 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof
C08J 9/02 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof using blowing gases generated by the reacting monomers or modifying agents during the preparation or modification of macromolecules
C08J 9/08 - 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 chemical blowing agent developing carbon dioxide
9.
PROCESS FOR THE PRODUCTION OF A SULFONE POLYMER AGGLOMERATE FROM THE RECOVERY OF EXPANDED SULFONE POLYMER
A process for the production of a polymeric agglomerate obtained from expanded sulfone polymer recovered from extrusion or injection moulding processes of sulfone polymer, the agglomeration of said expanded sulfone polymer being effected in said process. With respect to the known art for the production of expanded sulfone polymers that use starting virgin sulfone polymers, the present invention offers the advantage of providing a recovered expanded sulfone polymer which can be used as starting material together with the corresponding virgin sulfone polymer.
The invention relates to a process for the production of expanded material based on sulfone polymers, of the type that comprises an extrusion step in an extruder (2) of virgin sulfone polymer (1) with the injection of at least one expanding agent (3) and in the presence of at least one nucleating agent. According to the invention, a recycling step is provided of part of said expanded material (4), which provides a recycled product (9,11) used as raw material to the extruder (2) in combination with said virgin sulfone polymer (1).
17 - Rubber and plastic; packing and insulating materials
Goods & Services
Cellular plastic materials for use in manufacture of
sandwich constructions and structures, in particular for
wind power, boats, trains, buses, aeroplanes and space
rockets.
17 - Rubber and plastic; packing and insulating materials
19 - Non-metallic building materials
37 - Construction and mining; installation and repair services
Goods & Services
Rubber (raw or partly prepared), gutta-percha, gum (raw or partly prepared), asbestos, mica (raw or partly prepared), and goods made from these materials and not included in other classes; plastics in extruded form for use in manufacture; packing, stopping and insulating materials; flexible pipes, not of metal. Non-metallic building materials, especially sandwich constructions. Construction using building materials in the form of sandwich constructions.
13.
FORMULATION OF POLYMERIC MIXTURES FOR THE PRODUCTION OF CROSS-LINKED EXPANDED PVC FOAMS AND PROCESS FOR PRODUCING SAID FOAMS
A formulation of polymeric mixtures for the production of cross-linked expanded PVC foams, of the type comprising PVC, isocyanates, anhydrides and one or more nucleating agents, wherein said nucleating agents are composed of nucleating materials having a porosity of 1-100 nm, preferably 2-50 nm. With respect to known formulations for the production of cross-linked PVC foams, the formulation according to the invention offers the advantage of obtaining the desired stabilization, nucleation and expansion degrees, even without the use of diazocompounds.
C08J 9/00 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof
C08J 9/02 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof using blowing gases generated by the reacting monomers or modifying agents during the preparation or modification of macromolecules
C08J 9/08 - 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 chemical blowing agent developing carbon dioxide
12 - Land, air and water vehicles; parts of land vehicles
17 - Rubber and plastic; packing and insulating materials
42 - Scientific, technological and industrial services, research and design
Goods & Services
Bodies for land vehicles and replacement parts for such vehicle bodies; Chassis for vehicles, spare parts and fittings for commercial vehicles; Cargo compartments including floors for vehicles. Structural cellular plastic intended for sandwich constructions and structures, in particular for vehicles, lorries, cars, wind power, boats, trains, buses, aeroplanes and space rockets; Rubber (unprocessed and semi-processed), gutta-percha, gum (unprocessed and semi-processed), asbestos, mica (unprocessed and semi-processed); Plastics in extruded form for use in manufacture; Packing, stopping and insulating materials; Flexible tubes, not of metal. Engineering services; Calculation, construction and design of sandwich constructions; Development of processes.
17 - Rubber and plastic; packing and insulating materials
Goods & Services
Structural cellular plastic intended for sandwich constructions and structures, in particular intended for wind power, boats, trains, buses, aeroplanes and space rockets.
16.
Apparatus and method for the production of expanded foam embryos
The present invention relates to an injection molded product, an expanded foam product, a method of injection molding a plastisol an expandable plastic embryo during which the foaming of the plastic embryo is suppressed throughout the molding operation. The invention further relates to a mold and an injection molding device.
C08J 9/30 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof by mixing gases into liquid compositions or plastisols, e.g. frothing with air
C08J 9/00 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof
C08J 9/04 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof using blowing gases generated by a previously added blowing agent
B29C 44/10 - Applying counter-pressure during expanding
B29K 33/00 - Use of polymers of unsaturated acids or derivatives thereof, as moulding material
B29K 67/00 - Use of polyesters as moulding material
B29K 77/00 - Use of polyamides, e.g. polyesteramides, as moulding material
B29C 44/42 - Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by vacuum
B29K 105/00 - Condition, form or state of moulded material
B29K 105/04 - Condition, form or state of moulded material cellular or porous
17 - Rubber and plastic; packing and insulating materials
19 - Non-metallic building materials
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Gum (raw or partly processed), gutta-percha, rubber (raw or partly processed), asbestos, mica (raw or partly processed) and goods made from these materials and not included in other classes; Plastics in extruded form for use in manufacture; Packing, stopping and insulating materials; Flexible pipes, not of metal. Building materials (non-metallic); Non-metallic transportable buildings. Construction using building materials in the form of sandwich constructions. Engineering services; Calculation and design of building materials in the form of sandwich constructions; Development of processes in the form of buildings and construction of building materials.
17 - Rubber and plastic; packing and insulating materials
19 - Non-metallic building materials
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Rubber, namely, raw or partly processed, gutta-percha, gum, namely, gum, raw or partly processed, asbestos, in mica, and structural insulating sandwich building panels made from these materials and not included in other classes for general industrial use; plastics extruded form for use in manufacture; sealing compounds, packing and insulating materials for general industrial use; flexible pipes, not of metal Non-metallic building materials, namely, sandwich composite materials; non-metallic transportable buildings Construction services featuring sandwich constructions of building materials Engineering services in the field of transport, construction and energy industry; calculation and design of sandwich construction of building materials, namely, industrial and residential building design; development of building construction and building material construction processes, namely, development and establishment of building construction techniques, namely, the research and development of new products
19.
PROCESS FOR THE PRODUCTION OF CROSSLINKED PVC FOAMS AND COMPOSITIONS USED FOR THE EMBODIMENT OF SAID PROCESS
A process for the production of crosslinked PVC foams, which comprises the preparation of a polymeric mixture based on PVC, isocyanate, anhydride, nucleating agent and a physical blowing agent, heating this mixture in the reaction mould, cooling the polymeric mass thus obtained, opening the mould in order to extract the microcellular embryo, expanding and completing the crosslinking reactions of said embryo in an oven.
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
20.
APPARATUS AND METHOD FOR THE PRODUCTION OF EXPANDED FOAM EMBRYOS
The present invention relates to an injection moulded product, an expanded foam product, a method of injection moulding a plastisol an expandable plastic embryo during which the foaming of the plastic embryo is suppressed throughout the moulding operation. The invention further relates to a mould and an injection moulding device.
The present invention relates to an injection moulded product, an expanded foam product, a method of injection moulding a plastisol an expandable plastic embryo during which the foaming of the plastic embryo is suppressed throughout the moulding operation. The invention further relates to a mould and an injection moulding device.
A process for the production of PET foams includes the extrusion of a mixture of PET, epoxy resin, catalyst consisting of imidazole, derivatives of imidazole or mixtures thereof plus a blowing agent, wherein the homopolymerization reaction of the epoxy phase is performed in the extruder, upstream of the introduction of the blowing agent. Compared to the methods of the known art, a process according to the invention offers the advantage of providing a stable PET foam, in which the structure of the polymer chains is kept unaltered. The system therefore has viscoelasticity characteristics which allow the PET/epoxy homopolymer to receive the expanding action of the blowing agent, as far as the innermost and deepest layers of foam also even if they have a significant thickness.
C08J 9/00 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof
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
B29C 44/34 - Component parts, details or accessoriesAuxiliary operations
C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
C08G 59/68 - Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups characterised by the catalysts used
C08L 63/00 - Compositions of epoxy resinsCompositions of derivatives of epoxy resins
B29C 44/50 - Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying
B29K 63/00 - Use of epoxy resins as moulding material
B29K 67/00 - Use of polyesters as moulding material
B29K 75/00 - Use of polyureas or polyurethanes as moulding material
B29K 105/04 - Condition, form or state of moulded material cellular or porous
17 - Rubber and plastic; packing and insulating materials
Goods & Services
Structural cellular foam for sandwich constructions and structure especially related to wind power, boats, trains, buses, air crafts and spacecraft.
29.
Process for the production of expanded plastic materials, in particular PVC-based polymeric foams and a formulation of a polymeric blend for effecting said process
A perfected process for the production of expanded plastic materials, comprising a hot molding phase of a starting polymeric blend inside a mold, wherein the heating of said blend is effected by making the same a heat source, by triggering an exothermic reaction in its interior. With respect to the known art in the field, the process of the invention allows an improvement in the heating of the polymeric mass inside the mold, reducing the times necessary for effecting it and homogenizing the thermal values inside this mass.
C08J 9/00 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof
B29C 44/34 - Component parts, details or accessoriesAuxiliary operations
C08J 9/10 - 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 chemical blowing agent developing nitrogen
A process for the production of PET foams which comprises the extrusion of a mixture of PET, epoxy resin, catalyst consisting of imidazole, derivatives of imidazole or mixtures thereof plus a blowing agent, wherein the homopolymerization reaction of the epoxy phase is effected in the extruder, upstream of the introduction of the blowing agent. Compared to the methods of the known art, the process of the invention offers the advantage of providing a stable PET foam, in which the structure of the polymer chains is kept unaltered. The system therefore has viscoelasticity characteristics which allow the PET/epoxy homopolymer to receive the expanding action of the blowing agent, as far as the innermost and deepest layers of foam also having a significant thickness.
B29C 44/34 - Component parts, details or accessoriesAuxiliary operations
C08J 9/00 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof
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
C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
31.
PROCESS FOR THE PRODUCTION OF PET FOAMS AND PET FOAMS OBTAINED WITH SAID PROCESS
A process for the production of PET foams which comprises the extrusion of a mixture of PET, epoxy resin, catalyst consisting of imidazole, derivatives of imidazole or mixtures thereof plus a blowing agent, wherein the homopolymerization reaction of the epoxy phase is effected in the extruder, upstream of the introduction of the blowing agent. Compared to the methods of the known art, the process of the invention offers the advantage of providing a stable PET foam, in which the structure of the polymer chains is kept unaltered. The system therefore has viscoelasticity characteristics which allow the PET/epoxy homopolymer to receive the expanding action of the blowing agent, as far as the innermost and deepest layers of foam also having a significant thickness.
C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
B29C 44/34 - Component parts, details or accessoriesAuxiliary operations
C08J 9/00 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof
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
32.
Enhanced process for the production of expanded PVC and plastic materials based on expanded PVC obtained therewith
A process for the production of expanded PVC of the type includes heating a mass of polymeric mixture inside a closed mold; controlling the expansion of the mass in an environment having a constant volume defined by the closed mold, control being performed by the presence, in the mass of polymeric mixture, of microparticles of a compressible material, suitable for being contracted, under the action of the pressure generated by the formation and expansion of microcells of expanding gas in the same mass, from an initial form having a larger volume, to a form having a smaller volume; and expanding the microparticles, from their configuration to the initial configuration, the density of the expanded material thus obtained being determined by the contemporary presence of both microcells of expanding gas and the microparticles in their configuration having a larger volume.
C08J 9/32 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof from compositions containing microballoons, e.g. syntactic foams
B29C 44/02 - Shaping by internal pressure generated in the material, e.g. swelling or foaming for articles of definite length, i.e. discrete articles
17 - Rubber and plastic; packing and insulating materials
19 - Non-metallic building materials
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Rubber, gutta-percha, gum, asbestos, mica and goods made from these materials and not included in other classes; plastics in extruded form for use in manufacture; packing, stopping and insulating materials; flexible pipes, not of metal. Building materials (non-metallic); non-metallic transportable buildings. Construction of sandwich constructions. Engineering services; calculation and design of sandwich constructions; development of processes.
17 - Rubber and plastic; packing and insulating materials
19 - Non-metallic building materials
42 - Scientific, technological and industrial services, research and design
Goods & Services
(1) Semi-worked foamed plastics for use in construction of wind power apparatus, boats, trains, buses, aircraft, spacecraft, subsea buoyancy, and portable housing; syntactic foams for use in manufacturing adhesives
(2) Building materials, namely, semi-worked balsa wood sheets (1) Consulting in the field of engineering in relation to core materials and sandwich composite material; engineering in the field of core materials and sandwich composite material; design for others of structures, vehicles, and industrial and recreational apparatus manufactured with composite materials
17 - Rubber and plastic; packing and insulating materials
Goods & Services
(1) Semi-manufactured foamed plastics for use in construction of wind power apparatus, boats, trains, buses, aircraft, spacecraft, subsea buoyancy, and portable housing.
42 - Scientific, technological and industrial services, research and design
Goods & Services
Consulting services in the field of engineering, namely, design structural calculations and manufacturing support related to products made of composite materials and sandwich constructions; design for others of vehicles and recreational apparatus manufactured with composite materials
39.
PROCESS FOR THE PRODUCTION OF EXPANDED PLASTIC MATERIALS, IN PARTICULAR PVC-BASED POLYMERIC FOAMS AND A FORMULATION OF A POLYMERIC BLEND FOR EFFECTING SAID PROCESS
A perfected process for the production of expanded plastic materials, comprising a hot moulding phase of a starting polymeric blend inside a mould, wherein the heating of said blend is effected by making the same a heat source, by triggering an exothermic reaction in its interior. With respect to the known art in the field, the process of the invention allows an improvement in the heating of the polymeric mass inside the mould, reducing the times necessary for effecting it and homogenizing the thermal values inside this mass.
B29C 44/34 - Component parts, details or accessoriesAuxiliary operations
C08J 9/00 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof
C08J 9/10 - 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 chemical blowing agent developing nitrogen
17 - Rubber and plastic; packing and insulating materials
19 - Non-metallic building materials
42 - Scientific, technological and industrial services, research and design
Goods & Services
Semi-worked foamed plastics for use in construction of wind power apparatus, boats, trains, buses, aircraft, spacecraft, subsea buoyancy, and portable housing; syntactic foams for use in manufacturing adhesives Building materials, namely, semi-worked balsa wood sheets Consulting in the field of engineering; engineering; design for others of structures, vehicles, and industrial and recreational apparatus manufactured with composite materials
41.
PROCESS FOR THE PRODUCTION OF EXPANDED PLASTIC MATERIALS, IN PARTICULAR PVC- BASED POLYMERIC FOAMS AND A FORMULATION OF A POLYMERIC BLEND FOR EFFECTING SAID PROCESS
A perfected process for the production of expanded plastic materials, comprising a hot moulding phase of a starting polymeric blend inside a mould, wherein the heating of said blend is effected by making the same a heat source, by triggering an exothermic reaction in its interior. With respect to the known art in the field, the process of the invention allows an improvement in the heating of the polymeric mass inside the mould, reducing the times necessary for effecting it and homogenizing the thermal values inside this mass.
C08J 9/00 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof
C08J 9/10 - 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 chemical blowing agent developing nitrogen
B29C 44/34 - Component parts, details or accessoriesAuxiliary operations
42.
ENHANCED PROCESS FOR THE PRODUCTION OF EXPANDED PVC AND PLASTIC MATERIALS BASED ON EXPANDED PVC OBTAINED THEREWITH
A process for the production of expanded PVC of the type which comprises the heating of a mass of polymeric mixture (13) inside a closed mould, said process including: (a) control of the expansion of said mass (13) due to the hot moulding process in the environment having a constant volume defined by the mentioned closed mould (10), said control being effected by the presence, in the mentioned mass of polymeric mixture (13), of microparticles (16) of compressible material, suitable for being contracted, under the action of the pressure generated by the formation and expansion of microcells (20) of expanding gas in the same mass (13), from an initial form (A) having a larger volume, to a form (B) having a. smaller volume; and (b) the expansion of the mentioned microparticles (16) contained in the mass of the moulded expanded material, from their configuration (B) to the initial configuration (A) with a larger volume, the density of said expanded material thus obtained being determined by the contemporary presence, in the mass (13c) of the latter, of both microcells (20) of expanding gas and the mentioned microparticles (16) in their configuration A having a larger volume. With respect to the known technology for the production of expanded plastic materials, the process of the invention not only avoids the formation of melt losses during the moulding process, but also allows an expanded PVC having the desired density value to be obtained, even using much lower quantities of blowing agents with respect to those used in current processes of this type.
B29C 44/02 - Shaping by internal pressure generated in the material, e.g. swelling or foaming for articles of definite length, i.e. discrete articles
B29C 44/04 - Shaping by internal pressure generated in the material, e.g. swelling or foaming for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
B29C 44/34 - Component parts, details or accessoriesAuxiliary operations
B29C 70/66 - Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising fillers only the filler comprising hollow constituents, e.g. syntactic foam
C08J 9/32 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof from compositions containing microballoons, e.g. syntactic foams
43.
ENHANCED PROCESS FOR THE PRODUCTION OF EXPANDED PVC AND PLASTIC MATERIALS BASED ON EXPANDED PVC OBTAINED THEREWITH
A process for the production of expanded PVC of the type which comprises the heating of a mass of polymeric mixture (13) inside a closed mould, said process including: (a) control of the expansion of said mass (13) due to the hot moulding process in the environment having a constant volume defined by the mentioned closed mould (10), said control being effected by the presence, in the mentioned mass of polymeric mixture (13), of microparticles (16) of compressible material, suitable for being contracted, under the action of the pressure generated by the formation and expansion of microcells (20) of expanding gas in the same mass (13), from an initial form (A) having a larger volume, to a form (B) having a. smaller volume; and (b) the expansion of the mentioned microparticles (16) contained in the mass of the moulded expanded material, from their configuration (B) to the initial configuration (A) with a larger volume, the density of said expanded material thus obtained being determined by the contemporary presence, in the mass (13c) of the latter, of both microcells (20) of expanding gas and the mentioned microparticles (16) in their configuration A having a larger volume. With respect to the known technology for the production of expanded plastic materials, the process of the invention not only avoids the formation of melt losses during the moulding process, but also allows an expanded PVC having the desired density value to be obtained, even using much lower quantities of blowing agents with respect to those used in current processes of this type.
C08J 9/32 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof from compositions containing microballoons, e.g. syntactic foams
B29C 44/02 - Shaping by internal pressure generated in the material, e.g. swelling or foaming for articles of definite length, i.e. discrete articles
B29C 70/66 - Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising fillers only the filler comprising hollow constituents, e.g. syntactic foam
B29C 44/04 - Shaping by internal pressure generated in the material, e.g. swelling or foaming for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
B29C 44/34 - Component parts, details or accessoriesAuxiliary operations
17 - Rubber and plastic; packing and insulating materials
19 - Non-metallic building materials
42 - Scientific, technological and industrial services, research and design
Goods & Services
Rubber, gutta-percha, gum, asbestos, mica and goods made from these materials and not included in other classes; plastics in extruded form for use in manufacture; packing, stopping and insulating materials; flexible pipes, not of metal. Building materials (non-metallic); non-metallic transportable buildings. Engineering services; calculation, construction and design of sandwich constructions; development of processes; cunsulting services related to composite materials and sandwhich constructions.
17 - Rubber and plastic; packing and insulating materials
Goods & Services
Structural cellular foam for sandwich constructions and structure especially related to wind power, boats, trains, buses, air crafts and spacecraft.
47.
Formulations for cellular, foamed-polymer products based on polyvinyl chloride, improved cellular, foamed-polymer products based on polyvinyl chloride and a process for producing said improved cellular foamed-polymer products
Formulation for cellular, foamed-polymer product based on polyvinyl chloride, comprising: a polyvinyl chloride homopolymer having a K-value of from 60 to 85 and a pH value of the aqueous extract ranging of from 8 to 12; at least one isocyanate selected from isomers and homologues of diphenylmethane-4,4′-diisocyanate and modified diphenylmethane-4,4-diisocyanate s and mixtures thereof; at least one anhydride selected from the group of succinic anhydride, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, methyl-tetrahydrophthalic anhydride, 4-methyl-hexahydrophthalic anhydride, cyclohexane-1,2-dicarboxylic anhydride, methyl-endomethylene tetrahydrophthalic anhydride, dodecenyl succinic anhydride, trimellitic anhydride and mixtures thereof; at least a surfactant; at least a foaming agent.
B32B 3/26 - 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 particular shape of the outline of the cross-section of a continuous layerLayered 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 layer with cavities or internal voids
C08J 9/30 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof by mixing gases into liquid compositions or plastisols, e.g. frothing with air
B29C 44/08 - Shaping by internal pressure generated in the material, e.g. swelling or foaming for articles of definite length, i.e. discrete articles using several expanding steps
Mould tool to be arranged in a press with essentially parallel press surfaces for production of rigid expanded polymer embryo bodies, the mould tool comprises a first mould member and an second mould member that are moveable with respect to each other in a direction perpendicular to the press surfaces, and sealing means providing an essentially hermetic seal between the first and second mould member during at least a portion of such a relative motion, thereby defining a closed mould cavity of variable volume, wherein the first mould member defines at least a portion of the mould cavity volume and comprises an outer peripheral edge, and the second mould member comprises a rim that closely circumscribes the outer peripheral edge of the first mould member and wherein the sealing means is arranged in the gap formed between the rim and the outer peripheral edge.
B29C 43/02 - Compression moulding, i.e. applying external pressure to flow the moulding materialApparatus therefor of articles of definite length, i.e. discrete articles
B29C 43/32 - Component parts, details or accessoriesAuxiliary operations
17 - Rubber and plastic; packing and insulating materials
19 - Non-metallic building materials
42 - Scientific, technological and industrial services, research and design
Goods & Services
Rubber (raw or partly prepared), gutta-percha, gum (raw or partly prepared), asbestos, mica (raw or partly prepared), and goods made from these materials and not included in other classes; plastics in extruded form for use in manufacture; packing, stopping and insulating materials; flexible pipes, not of metal. Non-metallic building materials, especially sandwich constructions. Engineering services; calculation, construction and design of sandwich constructions; development of processes.
Press system (10, 11, 12, 13, 14) for production of partially expanded polymer bodies, comprising a mould cavity (20) of variable volume, temperature control means (30), counter 5 pressure means (40) arranged to counteract expansion of the mould cavity during moulding, wherein the pressure applied by the counter pressure means is arranged to increase in response to expansion of the mould cavity. There is also provided a method of moulding a partially expanded polymer body.
Mould tool to be arranged in a press with essentially parallel press surfaces for production of rigid expanded polymer embryo bodies, the mould tool comprises a first mould member and an second mould member that are moveable with respect to each other in a direction perpendicular to the press surfaces, and sealing means providing an essentially hermetic seal between the first and second mould member during at least a portion of such a relative motion, thereby defining a closed mould cavity y o f variable volume, wherein the first mould member defines at least a portion of the mould cavity y volume and comprises an outer peripheral edge, and the second mould member comprises a rim that closely circumscribes the outer peripheral edge of the first mould member and wherein the sealing means is arranged in the gap formed between the rim and the outer peripheral edge.
FORMULATIONS FOR CELLULAR, FOAMED-POLYMER PRODUCTS BASED ON POLYVINYL CHLORIDE, IMPROVED CELLULAR, FOAMED-POLYMER PRODUCTS BASED ON POLYVINYL CHLORIDE AND A PROCESS FOR PRODUCING SAID IMPROVED CELLULAR FOAMED-POLYMER PRODUCTS
Formulation for cellular, foamed-polymer product based on polyvinyl chloride, comprising: a polyvinyl chloride homopolymer having a K- value of from 60 to 85 and a pH value of the aqueous extract ranging of from 8 to 12; at least one isocyanate selected from isomers and homologues of diphenylmethane-4 , 4' -diisocyanate and modified diphenylmethane-4 , 4 ' -diisocyanate s and mixtures thereof ; at least one anhydride selected from the group of succinic anhydride, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, methyl -tetrahydrophthalic anhydride, 4- methyl -hexahydrophthalic anhydride, cyclohexane-1, 2- dicarboxylic anhydride, methyl -endomethylene tetrahydrophthalic anhydride, dodecenyl succinic anhydride, trimellitic anhydride and mixtures thereof ; at least a surfactant; at least a foaming agent.
C08G 18/62 - Polymers of compounds having carbon-to-carbon double bonds
C08J 9/10 - 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 chemical blowing agent developing nitrogen
FORMULATIONS FOR CELLULAR, FOAMED - POLYMER PRODUCTS BASED ON POLYVINYL CHLORIDE, IMPROVED CELLULAR, FOAMED-POLYMER PRODUCTS BASED ON POLYVINYL CHLORIDE AND A PROCESS FOR PRODUCING SAID IMPROVED CELLULAR FOAMED-POLYMER PRODUCTS
Formulation for cellular, foamed-polymer product based on polyvinyl chloride, comprising: a polyvinyl chloride homopolymer having a K- value of from 60 to 85 and a pH value of the aqueous extract ranging of from 8 to 12; at least one isocyanate selected from isomers and homologues of diphenylmethane-4 , 4' -diisocyanate and modified diphenylmethane-4 , 4 ' -diisocyanate s and mixtures thereof ; at least one anhydride selected from the group of succinic anhydride, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, methyl -tetrahydrophthalic anhydride, 4- methyl -hexahydrophthalic anhydride, cyclohexane-1, 2- dicarboxylic anhydride, methyl -endomethylene tetrahydrophthalic anhydride, dodecenyl succinic anhydride, trimellitic anhydride and mixtures thereof ; at least a surfactant; at least a foaming agent.
17 - Rubber and plastic; packing and insulating materials
Goods & Services
(1) Plastics.
(2) Structural cellular foam for sandwich constructions and structure related to the wind power, boats, trains, buses, air craft and spacecraft industries.
