公开(公告)号：US11014267B2

公开(公告)日：2021-05-25

申请号：US15746880

申请日：2016-03-17

申请人： Guangdong Industry Polytechnic

发明人： Baiping Xu ,  Huiwen Yu ,  Liang He ,  Jinwei Chen ,  Wenliu Zhuang ,  Meigui Wang

IPC分类号： B29B7/48 ,  B29C48/535 ,  B29C48/68 ,  B29C48/40 ,  B29C48/405 ,  B29C48/54 ,  B29C48/57 ,  B29C48/76

摘要： A co-rotating self-cleaning two-screw extruder with a gradual number of threads and through self-cleaning function, and a processing method using the same, are disclosed. The screw assembly in the extruder includes a first screw (3) and a second screw (4) that co-rotate at the same speed in engagement; the first screw (3) includes a first single threaded element, a first transition element, a multiple threaded element, a second transition element and a second single threaded element that are connected in sequence; and the second screw (4) includes a first single threaded element, a third transition element, a multiple threaded element, a fourth transition element and a second single threaded element that are connected in sequence. The materials are transferred by rotation of the first (3) and second screws (4), and get their respective compositions mixed based on the structure of a gradual number of threads; with the flow passage expanded, contracted and re-expanded in shape in sequence, the materials undergo the single-to-multiple threaded, multiple-to-single threaded and again single-to-multiple threaded chaotic mixing in sequence; and the first and second screws achieve the self-cleaning effect by wiping each other.

公开(公告)号：US20210146590A1

公开(公告)日：2021-05-20

申请号：US16624260

申请日：2018-06-20

申请人： STEER ENGINEERING PRIVATE LIMITED

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).

公开(公告)号：US10927064B2

公开(公告)日：2021-02-23

申请号：US16766909

申请日：2018-12-12

申请人： 3M INNOVATIVE PROPERTIES COMPANY

发明人： Rudy W. Van Campenhout ,  Rudolf J. Dams ,  Eike H. Klunker ,  Matthias Conradi ,  Siegfried R. Goeb

IPC分类号： C07C67/14 ,  C07C231/02 ,  C07C69/54 ,  C07C233/09 ,  B29C48/405

摘要： The present disclosure relates to a process for the manufacturing of a compound comprising a (meth)acryloyl group, wherein the process comprises the steps of: a) providing a multi-screw extruder comprising a reaction chamber; b) providing reactants and reagents comprising: i. an alcohol or a primary or secondary amine; ii. a base; and iii. a (meth)acryloyl halide or a 3-halopropionyl halide; and c) incorporating the reactants and reagents into the reaction chamber of the multi-screw extruder, thereby forming a reaction product stream comprising the compound comprising a (meth)acryloyl group.

公开(公告)号：US10920041B2

公开(公告)日：2021-02-16

申请号：US15307196

申请日：2016-08-11

申请人： SOUTH DAKOTA BOARD OF REGENTS

发明人： Andrew T. Brady ,  Bert D. Mannhalter ,  David R. Salem

IPC分类号： B29C47/12 ,  C08K7/06 ,  B32B7/02 ,  B29C43/24 ,  C08K7/14 ,  B32B5/26 ,  B32B27/12 ,  C08K7/02 ,  B29B7/46 ,  B29B7/90 ,  B32B15/14 ,  C08L51/06 ,  B32B5/08 ,  B29B7/00 ,  B32B5/02 ,  C08L23/12 ,  B29C48/21 ,  B29C48/00 ,  B29C48/92 ,  B29C48/76 ,  B29C48/40 ,  B29C48/08 ,  B29C48/285 ,  B29C48/05 ,  B29C48/35 ,  B29C48/625 ,  B29C48/405 ,  B32B15/04 ,  B32B27/06 ,  B32B37/14 ,  B29B7/82 ,  B29B7/84 ,  B29B7/72 ,  B29B7/60 ,  B32B37/10 ,  B29C48/475 ,  B29C48/04 ,  B29C48/485 ,  B29L7/00

摘要： The invention relates to compositions comprising composite materials comprised of discontinuous fibers and one or more polymers and/or oligomers. The invention relates to methods of making the same. The composite materials can be in the form of compositions, composite sheets, laminates, pellets, and/or shaped composite products.

公开(公告)号：US20210023759A1

公开(公告)日：2021-01-28

申请号：US16661095

申请日：2019-10-23

申请人： WUYI UNIVERSITY

发明人： Baiping XU ,  Huiwen YU ,  Biao LIU ,  Shuping XIAO ,  Yaoxue DU

IPC分类号： B29C48/52 ,  B29C48/405 ,  B29C48/595

摘要： Disclosed is an asymmetric co-rotating multi-screw extrusion device, an extruder, and a processing method thereof. The barrel is provided with a feed port located at one end of the screw mechanism and a discharge port located at the other end of the screw mechanism, and the barrel comprises a conveying section, a melting section, an exhaust section, and a mixing extrusion section sequentially arranged from a side thereof where the feed port is located, wherein the exhaust section is provided with an exhaust hole. The screw mechanism comprises at least a first screw and a second screw arranged parallel to the first screw, wherein at least one of the first screw and the second screw has a cross-sectional profile comprising an arc forming a radial step between a root and a crest thereof, and the first screw and the second screw are asymmetrically inter-meshed and co-rotated at the same speed.