Patents Assigned to Diab International AB
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Patent number: 11884046Abstract: 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.Type: GrantFiled: October 22, 2020Date of Patent: January 30, 2024Assignee: Diab International ABInventor: Johan Fagerstrom
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Publication number: 20220388270Abstract: 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.Type: ApplicationFiled: October 22, 2020Publication date: December 8, 2022Applicant: DIAB INTERNATIONAL ABInventor: Johan Fagerstrom
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Patent number: 10357905Abstract: 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.Type: GrantFiled: December 10, 2014Date of Patent: July 23, 2019Assignee: DIAB International ABInventors: Jerry Stigsson, Lars Gustav Wilhelmsson
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Patent number: 9868839Abstract: A process for the production of crosslinked PVC foams includes the preparation of a polymeric mixture based on PVC, isocyanate, anhydride, nucleating agent and a physical blowing agent, heating this mixture in a reaction mold, cooling the polymeric mass thus obtained, opening the mold in order to extract the microcellular embryo, and expanding and completing the crosslinking reactions of the embryo in an oven.Type: GrantFiled: January 14, 2015Date of Patent: January 16, 2018Assignee: DIAB INTERNATIONAL ABInventors: Raffaela Bressan, Eva-Lotta Magdalena Petersson
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Publication number: 20160362532Abstract: A process for the production of crosslinked PVC foams includes the preparation of a polymeric mixture based on PVC, isocyanate, anhydride, nucleating agent and a physical blowing agent, heating this mixture in a reaction mold, cooling the polymeric mass thus obtained, opening the mold in order to extract the microcellular embryo, and expanding and completing the crosslinking reactions of the embryo in an oven.Type: ApplicationFiled: January 14, 2015Publication date: December 15, 2016Applicant: DIAB INTERNATIONAL ABInventors: Raffaela Bressan, Eva-Lotta Magdalena Petersson
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Publication number: 20160311140Abstract: 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.Type: ApplicationFiled: December 10, 2014Publication date: October 27, 2016Applicant: DIAB International ABInventors: Jerry STIGSSON, Lars Gustav WILHELMSSON
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Patent number: 9394417Abstract: 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.Type: GrantFiled: January 14, 2013Date of Patent: July 19, 2016Assignee: DIAB INTERNATIONAL ABInventors: Leone Lauri, Raffaela Bressan, Luigi Aliperta, Eva-Lotta Magdalena Petersson
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Publication number: 20140357744Abstract: 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.Type: ApplicationFiled: January 14, 2013Publication date: December 4, 2014Applicant: DIAB INTERNATIONAL ABInventors: Leone Lauri, Raffaela Bressan, Luigi Aliperta, Eva-Lotta Magdalena Petersson
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Patent number: 8895634Abstract: 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.Type: GrantFiled: June 24, 2011Date of Patent: November 25, 2014Assignee: Diab International ABInventors: Leone Lauri, Eva-Lotta Magdalena Petersson, Raffaela Bressan, Samia Mariam Hamed
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Publication number: 20130267620Abstract: 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.Type: ApplicationFiled: June 24, 2011Publication date: October 10, 2013Applicant: DIAB INTERNATIONAL ABInventors: Leone Lauri, Eva-Lotta Magdalena Petersson, Raffaela Bressan, Samia Mariam Hamed
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Patent number: 8492446Abstract: 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.Type: GrantFiled: June 7, 2011Date of Patent: July 23, 2013Assignee: Diab International ABInventors: Leone Lauri, Eva-Lotta Magdalena Petersson, Raffaela Bressan, Samia Mariam Hamed
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Publication number: 20130150474Abstract: 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.Type: ApplicationFiled: June 7, 2011Publication date: June 13, 2013Applicant: DIAB INTERNATIONAL ABInventors: Leone Lauri, Eva-Lotta Magdalena Peterson, Raffaela Bressan, Samia Mariam Hamed
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Patent number: 8419406Abstract: 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.Type: GrantFiled: June 11, 2007Date of Patent: April 16, 2013Assignee: DIAB International ABInventors: Roland Karlsson, Jerry Stigsson, Anders Paulsson
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Patent number: 8168293Abstract: 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.Type: GrantFiled: June 5, 2007Date of Patent: May 1, 2012Assignee: Diab International ABInventors: Leone Lauri, Sam Shehyee Ang, Jan Jerry Christian Stigsson, Raffaela Bressan
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Publication number: 20100034918Abstract: 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.Type: ApplicationFiled: June 11, 2007Publication date: February 11, 2010Applicant: DIAB INTERNATIONAL ABInventors: Roland Karlsson, Jerry Stigsson, Anders Paulsson