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公开(公告)号：US11077598B2
公开(公告)日：2021-08-03
申请号：US16344691
申请日：2017-10-13
发明人： Qian Gou , Mark A. Spalding , Bharat I. Chaudhary , Karl Seven
摘要： Lower discharge temperatures and improved flow rates are obtained for the processing of meltable, solid crosslinkable compositions comprising a polymer, e.g., polyethylene, and a peroxide, in a single barrel extruder by equipping the extruder with an energy transfer (ET) screw that comprises: (1) an ET section with a distance averaged ET section depth of 8.0% to 10% of the extruder barrel internal diameter, and (2) a metering section with a metering section depth of 6.0% to 8% of the extruder barrel internal diameter.
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公开(公告)号：US20160177473A1
公开(公告)日：2016-06-23
申请号：US14905869
申请日：2014-09-19
CPC分类号： D01F6/30 , B29C48/0018 , B29C48/022 , B29C48/05 , B29K2023/00 , B29L2031/707 , D01D5/098 , D01D5/16 , D01F9/21 , D01F11/06 , D06M11/52 , D06M11/55
摘要： Prepare a polyolefin fiber having a diameter of 10 microns or less by extruding a molten polyolefin through die holes having diameters in a range of 250 to 500 microns to produce molten polyolefin fibers; drawing the molten polyolefin fibers to achieve a molten draw ratio in a range of 150 to 500 at a temperature in a range of 200 to 250 degrees Celsius; and drawing the polyolefin fibers in a solid state to achieve a solid state draw ratio of 3.0 to 4.0 at a temperature in a range of 40 to 100 degrees Celsius to produce polyolefin fibers having a diameters of 10 microns or less; where the polyolefin is characterized by being a polyolefin copolymer of ethylene and one or more than one alpha-olefin and where the copolymer has a solid density of 0.870 or more and 0.96 or less as determined according to ASTM D792.
摘要翻译： 通过将熔融聚烯烃挤出直径在250-500微米范围内的模具孔，制备直径为10微米或更小的聚烯烃纤维，以制备熔融聚烯烃纤维; 拉伸熔融的聚烯烃纤维以在200至250摄氏度的温度范围内实现150至500的范围内的熔融拉伸比; 并且将聚烯烃纤维拉伸成固态，以在40至100摄氏度的温度下实现3.0至4.0的固态拉伸比，以制备直径为10微米或更小的聚烯烃纤维; 其中聚烯烃的特征在于是乙烯和一种或多于一种α-烯烃的聚烯烃共聚物，其中根据ASTM D792测定，共聚物的固体密度为0.870以上且0.96以下。
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公开(公告)号：US20200047387A1
公开(公告)日：2020-02-13
申请号：US16344691
申请日：2017-10-13
发明人： Qian Gou , Mark A. Spalding , Bharat I. Chaudhary , Karl Seven
摘要： Lower discharge temperatures and improved flow rates are obtained for the processing of meltable, solid crosslinkable compositions comprising a polymer, e.g., polyethylene, and a peroxide, in a single barrel extruder by equipping the extruder with an energy transfer (ET) screw that comprises: (1) an ET section with a distance averaged ET section depth of 8.0% to 10% of the extruder barrel internal diameter, and (2) a metering section with a metering section depth of 6.0% to 8% of the extruder barrel internal diameter.
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公开(公告)号：US20180311625A1
公开(公告)日：2018-11-01
申请号：US15779395
申请日：2016-03-01
发明人： Pavan K. Valavala , Matthew J. Turpin , Mark A. Spalding , Jeffery D. Zawisza , Steve Allison , Larry R. Ruddy , Nicholas E. Kennedy , Charles Eslinger , Laura J. Dietsche
CPC分类号： B01F13/0027 , B01F7/0065
摘要： A dynamic mixer (40) comprising a rotatable structure (10, 111, 11, 1, 2, 3, 4, 5) having a cylindrical base (14) having a connector disposed at one end, an opposing thinned end, flights of 3 to 6 blades (11, 12, 151, 61), separated by a notches (13, 18) the blades (11, 12, 151, 61) have an inlet face facing the connector end, an outlet (30) face facing the thinned end, a leading edge (21) facing the direction of rotation, a trailing edge (20) opposite the leading edge (21), a standard leading face (154, 65) which tapers from the leading edge (21) to the outlet (30) face and a standard trailing face (166) which tapers from the trailing edge (20) to the inlet face, or a reverse leading face (154, 65) which tapers from the leading edge (21) to the inlet face and a reverse trailing face (155, 66) which tapers from the trailing edge (20) to the outlet (30) face, the notches (13, 18) are offset from one another and the article is adapted for use in a dynamic mixer (40) to mix viscous material when rotated in the mixer (40). An article comprising the mixer (40), a shell (25, 28, 29, 31) about the mixer (40) and an endplate (33) that defines material inlets and seals the inlet end (15, 27) of the mixer (40).
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