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公开(公告)号：US20200369839A1
公开(公告)日：2020-11-26
申请号：US16769700
申请日：2018-12-07
发明人： Babu Padmanabhan , P. B. Raman
IPC分类号： C08J5/04
摘要： A process for preparing a fiber reinforced thermoplastic is disclosed. The process includes melting a first thermoplastic and a second thermoplastic in a melting zone of a twin-screw processor, feeding at least one continuous fiber downstream of the melting zone into a melted mixture of the first thermoplastic and the second thermoplastic, incorporating the at least one continuous fiber into the melted mixture in a mixing zone, the mixing zone including at least one wave element having a continuous outer surface in the form of a helical wave, and obtaining the fiber reinforced thermoplastic from the twin screw processor. Further, a fiber reinforced thermoplastic composition prepared by an extrusion process the composition having a density between 1.3 g/cc to 1.7 g/cc and a flexural modulus of at least 4000 MPa is disclosed.
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公开(公告)号：US10239233B2
公开(公告)日：2019-03-26
申请号：US15077810
申请日：2016-03-22
发明人： Babu Padmanabhan
摘要： An element for a co-rotating twin screw processor, the element having a lead ‘L’ and at least one continuous flight helically formed thereon and, wherein the flight transforms at least once from a first non-integer lobe flight into a second non-integer lobe flight in a fraction of the lead ‘L’ and transforms back to the first non-integer lobe flight in a fraction of the lead ‘L’.
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公开(公告)号：US20190091915A1
公开(公告)日：2019-03-28
申请号：US15767742
申请日：2016-10-12
发明人： Babu Padmanabhan , Robert Roden , Sambhu Bhadra
IPC分类号： C08F220/06 , B29C35/08 , B29K33/00
摘要： A process for preparing hydrogels is disclosed. Said process comprises passing reactants comprising a monomer, an initiator and a cross-linker through a co-rotating twin screw extruder, the co-rotating twin screw extruder being operated at a screw speed of at least 200 rpm and comprising an inlet zone, an outlet zone, and in between the inlet zone and the outlet zone at least one mixing zone, at least one conveying zone and at least one back-mixing zone, wherein the back-mixing zone comprises of restricting elements which restrict the reactants from moving forward in the co-rotating twin screw extruder until a forward force sufficient to overcome the restriction is achieved, such that the co-rotating twin screw extruder provides sufficient shear energy and residence time to the reactants to (co)polymerize and produce hydrogel having a water uptake greater than 100 g/g.
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公开(公告)号：US11312041B2
公开(公告)日：2022-04-26
申请号：US16208273
申请日：2018-12-03
发明人： Babu Padmanabhan
IPC分类号： B29B7/48 , B29C48/25 , B29C48/57 , B29C48/655 , B29C48/61 , B29C48/40 , B29C48/405
摘要： A dispersive mixing element for co-rotating twin screw extruder is disclosed. The element for co-rotating twin screw extruder comprises of a continuous flight helically formed thereon having a lead ‘L’, wherein either the flight transforms at least once from an integer lobe flight into a non-integer lobe flight in a fraction of the lead ‘L’ and transforms back to an integer lobe flight in a fraction of the lead ‘L’ or the flight transforms at least once from a non-integer lobe flight into an integer lobe flight in a fraction of the lead ‘L’ and transforms back to a non-integer lobe flight in a fraction of the lead ‘L’.
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公开(公告)号：US20210146590A1
公开(公告)日：2021-05-20
申请号：US16624260
申请日：2018-06-20
发明人： Babu Padmanabhan
IPC分类号： B29C48/405 , B29C48/00 , B29C48/09 , B29C48/285 , C08L27/06
摘要： A method for producing a fused unplasticised polyvinyl chloride (UPVC) article (126) is provided. The method includes feeding an UPVC blend (103) into a co-rotating twin-screw extruder (100). The method further includes melting the UPVC blend (103) and conveying fused UPVC to an outlet (120) of the co-rotating twin-screw extruder (100). The method also includes collecting the fused UPVC from the outlet (120) at a rate of at least 100 kilograms/hour per litre of free volume (124) of the co-rotating twin-screw extruder (100).
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公开(公告)号：US20190105803A1
公开(公告)日：2019-04-11
申请号：US16208273
申请日：2018-12-03
发明人： Babu Padmanabhan
摘要： A dispersive mixing element for co-rotating twin screw extruder is disclosed. The element for co-rotating twin screw extruder comprises of a continuous flight helically formed thereon having a lead ‘L’, wherein either the flight transforms at least once from an integer lobe flight into a non-integer lobe flight in a fraction of the lead ‘L’ and transforms back to an integer lobe flight in a fraction of the lead ‘L’ or the flight transforms at least once from a non-integer lobe flight into an integer lobe flight in a fraction of the lead ‘L’ and transforms back to a non-integer lobe flight in a fraction of the lead ‘L’.
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公开(公告)号：US20160279828A1
公开(公告)日：2016-09-29
申请号：US15077810
申请日：2016-03-22
发明人： Babu Padmanabhan
CPC分类号： B29B7/489 , B29B7/48 , B29B7/484 , B29C47/0844 , B29C47/0861 , B29C47/402 , B29C47/60 , B29C47/6025 , B29C47/6056
摘要： An element for a co-rotating twin screw processor, the element having a lead ‘L’ and at least one continuous flight helically formed thereon and, wherein the flight transforms at least once from a first non-integer lobe flight into a second non-integer lobe flight in a fraction of the lead ‘L’ and transforms back to the first non-integer lobe flight in a fraction of the lead ‘L’.
摘要翻译： 用于同向旋转双螺杆处理器的元件，该元件具有引线“L”和在其上螺旋形成的至少一个连续螺旋，并且其中飞行从第一非整数叶飞行转换至少一次到第二非整数叶飞行， 导数“L”的一小部分的整数叶飞行，并转换回引导“L”的一部分中的第一个非整数叶飞行。
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公开(公告)号：US20160082640A1
公开(公告)日：2016-03-24
申请号：US14888916
申请日：2014-05-27
CPC分类号： B29C47/0011 , A61K9/1617 , A61K9/1694 , A61K9/2095 , B29C47/00 , B29C47/402 , B29C47/6075 , B29C47/805 , B29C47/807 , B29K2091/00 , B29K2105/0035
摘要： A co-rotating twin screw extruder for forming fragments is disclosed. The extruder comprises of an intake zone for receiving one or more excipient(s) suitable for oral dosage or one or more excipient(s) suitable for oral dosage along with one or more active pharmaceutical ingredient, a melt zone for softening at least one excipient to form a viscous mass or melt and a fragmenting zone for fragmenting and cooling the viscous mass into cooled fragments and an extruder outlet for recovering the cooled fragments from the extruder.
摘要翻译： 公开了一种用于形成碎片的同向旋转双螺杆挤出机。 挤出机包括用于接收适合于口服剂量的一种或多种赋形剂或一种或多种适合于口服剂量的赋形剂与一种或多种活性药物成分的进料区，用于软化至少一种赋形剂的熔融区 以形成粘性物质或熔体和碎片区，用于将粘性物质碎裂和冷却成冷却的碎片，以及用于从挤出机中回收冷却碎片的挤出机出口。
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