公开(公告)号：US20190190037A1

公开(公告)日：2019-06-20

申请号：US16065374

申请日：2016-11-14

Applicant: Toray Industries, Inc.

Inventor： Naoki Mizuno ,  Masami Sugata

IPC: H01M8/0239 ,  C08L23/06 ,  H01M2/16 ,  C08L27/20 ,  C08L27/16

CPC classification number: H01M8/0239 ,  B32B5/32 ,  C08J9/28 ,  C08L23/06 ,  C08L27/16 ,  C08L27/20 ,  C08L2203/20 ,  H01M2/16 ,  H01M4/622 ,  H01M10/0525

Abstract: A battery separator includes a polyolefin microporous membrane and a porous layer placed on at least one surface of the polyolefin microporous membrane. The polyolefin microporous membrane has a variation range of an F25 value in a longitudinal direction of 1 MPa or less. The F25 value indicates a value obtained by dividing a load value measured at 25% elongation of a specimen with use of a tensile tester by a cross-sectional area of the specimen. The porous layer contains a fluorine-based resin and an inorganic particle and has an average thickness T(ave) of 1 to 5 μm.

公开(公告)号：US20170317328A1

公开(公告)日：2017-11-02

申请号：US15531807

申请日：2015-11-05

Applicant: Toray Industries, Inc.

Inventor： Naoki Mizuno ,  Masami Sugata

IPC: H01M2/16 ,  H01M10/0525 ,  H01M10/0587 ,  H01M2/14

Abstract: A polyolefin microporous membrane is suitable to provide thereon a porous layer having little variation in thickness, which has a fluctuation range of F25 value in the length direction of 1 MPa or less, and which has a length of 1,000 m or more (wherein the F25 value refers to a value obtained by: measuring a load value applied to a test specimen when the test specimen is stretched by 25% using a tensile tester; and dividing the load value by the value of the cross-sectional area of the test specimen).

公开(公告)号：US10658640B2

公开(公告)日：2020-05-19

申请号：US15329868

申请日：2015-08-07

Applicant: TORAY INDUSTRIES, INC.

Inventor： Masami Sugata ,  Naoki Toyota

IPC: H01M2/16 ,  C08J9/28 ,  H01M10/0566 ,  C08J5/18 ,  H01M2/14

Abstract: The present invention provides a microporous membrane having an excellent balance of temperature characteristics, shrinkage characteristics, permeability, and strength, and thereby realizes a separator for a non-aqueous electrolyte secondary battery and a non-aqueous electrolyte secondary battery, having excellent performance and excellent safety. A polyolefin microporous membrane having;a temperature difference not less than 7.2° C. between a shutdown shrinkage temperature and a maximum shrinkage temperature in a TD measured by TMA;a shrinkage rate difference less than 25% between a shutdown shrinkage rate and a maximum shrinkage rate in the TD;a pin puncture strength at a membrane thickness of 16 μm being not less than 400 gf; anda ratio of pin puncture strength to air permeation resistance at a membrane thickness of 16 μm being from 2.0 to 4.0 (gf/(sec/100 cc)).

公开(公告)号：US10283749B2

公开(公告)日：2019-05-07

申请号：US15517492

申请日：2016-10-05

Applicant: TORAY INDUSTRIES, INC.

Inventor： Naoki Mizuno ,  Masami Sugata

IPC: H01M2/16 ,  B32B27/32 ,  B29C47/00 ,  B29C47/88 ,  H01M2/14 ,  B32B27/08 ,  B29K623/00 ,  B29L31/34 ,  B29L31/00

Abstract: A laminated polyolefin microporous membrane is disclosed. The laminated polyolefin microporous membrane includes a first polyolefin microporous membrane, and a second polyolefin microporous membrane. A shutdown temperature of the laminated polyolefin microporous membrane is from 128° C. to 135° C., an air permeation resistance increase rate from 30° C. to 105° C. per 20 μm of thickness of the laminated polyolefin microporous membrane is less than 1.5 sec/100 cc Air/° C., and a variation range in an F25 value of the laminated polyolefin microporous membrane in a longitudinal direction is not greater than 1 MPa. The F25 value represents a value determined by dividing the load at 25% elongation of a sample of the laminated polyolefin microporous membrane as measured with a tensile tester by the cross-sectional area of the sample polyolefin microporous membrane.

公开(公告)号：US20180366709A1

公开(公告)日：2018-12-20

申请号：US15781429

申请日：2016-11-14

Applicant: Toray Industries, Inc.

Inventor： Naoki Mizuno ,  Masami Sugata

IPC: H01M2/16 ,  H01M2/14 ,  H01M10/0525

Abstract: A battery separator includes a polyolefin microporous membrane having a width of 100 mm or more, and a porous layer laminated on at least one surface of the polyolefin microporous membrane. The polyolefin microporous membrane has a variation range of an F25 value in a width direction of 1 MPa or less, and the F25 value indicates a value obtained by dividing a load value measured at 25% elongation of a specimen with use of a tensile tester by a cross-sectional area of the specimen. The porous layer contains a fluorine-based resin and an inorganic particle.

公开(公告)号：US09805868B2

公开(公告)日：2017-10-31

申请号：US14387119

申请日：2013-03-15

Applicant: Toray Industries, Inc.

Inventor： Takanori Nakatsuka ,  Tetsuya Asano ,  Masami Sugata

IPC: H01G4/18 ,  C08J5/18 ,  H01G4/015 ,  B29C55/14 ,  B29K23/00

CPC classification number: H01G4/18 ,  B29C55/143 ,  B29K2023/10 ,  B29K2995/0006 ,  C08J5/18 ,  C08J2323/10 ,  H01G4/015 ,  Y10T428/24355

Abstract: A biaxially stretched polypropylene film for capacitors which has protrusions on both sides and has a thickness (t1[μm]) of 1 μm to 3 μm, wherein Formulae (1) to (4) are satisfied by an A-side as one film surface and a B-side as another film surface: |Pa−Pb|≧200;  (1) 0.350≦Pa/SRzA≦0.700;  (2) 500 nm≦SRzA≦1,200 nm;  (3) 50 nm≦SRzB≦500 nm;  (4) wherein, in Formulae (1) to (4), Pa is a number per 0.1 mm2 of protrusions on the A-side, Pb is a number per 0.1 mm2 of protrusions on the B-side, SRzA is a ten-point average roughness of the A-side, and SRzB is a ten-point average roughness of the B-side.

公开(公告)号：US20140268493A1

公开(公告)日：2014-09-18

申请号：US14112591

申请日：2011-04-19

Applicant: Toray Industries, Inc.

Inventor： Takanori Nakatsuka ,  Masami Sugata ,  Tetsuya Asano

IPC: H01G4/18

CPC classification number: H01G4/18 ,  B29C55/143 ,  B29K2023/10 ,  B29K2995/0072 ,  B82Y99/00 ,  C08J5/18 ,  C08J2323/10 ,  Y02T10/7022 ,  Y10S977/948 ,  Y10T428/24355

Abstract: Provided is a biaxially stretched polypropylene film for capacitors which has high withstand voltage characteristics when used as a dielectric for capacitors and which has highly suitable processability into elements. The biaxially stretched polypropylene film for capacitors has projections on both surfaces and has a thickness (t1, μm) of 4-20 μm. When one of the surfaces is expressed by surface A and the other by surface B, all of the following relationships are satisfied. 800≦SRzB≦1,300 (nm) 0.1≦SRzA/SRzB≦0.8 PBmin≧100 (nm) PBmax≦1,500 (nm) 0.4≦PB450-750/PB≦0.7.

Abstract translation: 提供一种用于电容器的双轴拉伸聚丙烯薄膜，当用作电容器的电介质时具有高耐压特性，并且对元件具有高度适合的加工性。 用于电容器的双轴拉伸聚丙烯膜在两个表面上具有突起，并且具有4-20μm的厚度（t1，μm）。 当其中一个表面由表面A表示，另一个由表面B表示时，满足以下所有关系。 800和nlE; SRzB＆nlE; 1,300（nm）0.1＆amp; N1; SRzA / SRzB＆nlE; 0.8PBmin≥100（nm）PBmax＆nlE; 1,500（nm）0.4＆nlE; PB450-750 / PB＆

公开(公告)号：US10770707B2

公开(公告)日：2020-09-08

申请号：US15781429

申请日：2016-11-14

Applicant: Toray Industries, Inc.

Inventor： Naoki Mizuno ,  Masami Sugata

IPC: H01M2/16 ,  B32B5/32 ,  C08J9/28 ,  B29C55/00 ,  B29C55/14 ,  C08J9/36 ,  B29D7/01 ,  C08J5/18 ,  C08J7/04 ,  H01M2/14 ,  H01M10/0525 ,  B29K27/00 ,  B29K503/04 ,  B29L31/34 ,  B29K105/04 ,  B01D69/02 ,  B01D69/12 ,  B01D71/38 ,  B01D71/40

Abstract: A battery separator includes a polyolefin microporous membrane having a width of 100 mm or more, and a porous layer laminated on at least one surface of the polyolefin microporous membrane. The polyolefin microporous membrane has a variation range of an F25 value in a width direction of 1 MPa or less, and the F25 value indicates a value obtained by dividing a load value measured at 25% elongation of a specimen with use of a tensile tester by a cross-sectional area of the specimen. The porous layer contains a fluorine-based resin and an inorganic particle.

公开(公告)号：US20200303705A1

公开(公告)日：2020-09-24

申请号：US16890185

申请日：2020-06-02

Applicant: Toray Industries, Inc.

Inventor： Naoki Mizuno ,  Masami Sugata

IPC: H01M2/16 ,  C08J9/28 ,  B32B27/32 ,  B32B5/32 ,  H01M2/14 ,  H01M10/0525 ,  H01M10/0587

Abstract: A polyolefin microporous membrane is suitable to provide thereon a porous layer having little variation in thickness, which has a fluctuation range of F25 value in the length direction of 1 MPa or less, and which has a length of 1,000 m or more (wherein the F25 value refers to a value obtained by: measuring a load value applied to a test specimen when the test specimen is stretched by 25% using a tensile tester; and dividing the load value by the value of the cross-sectional area of the test specimen).

公开(公告)号：US10343382B2

公开(公告)日：2019-07-09

申请号：US15309782

申请日：2015-04-28

Applicant: TORAY INDUSTRIES, INC.

Inventor： Masami Sugata ,  Koichi Matano ,  Naoki Mizuno

IPC: H01M10/0525 ,  H01M2/16 ,  B32B27/32 ,  B29C47/06 ,  B32B3/30 ,  B29C48/21 ,  B29C48/18

Abstract: A multi-layer polyolefin porous membrane is disclosed. The membrane includes first and second layers, and a plurality of protrusions including polyolefin. The protrusions have a protrusion width (W) satisfying 5 μm≤W≤50 μm and have a protrusion height (H) satisfying 0.5 μm≤H. The protrusions are randomly disposed on a first side of the membrane, and the protrusions are disposed with a density of not less than 3 protrusions/cm2 and not greater than 200 protrusions/cm2. A meltdown temperature of the membrane is not lower than 165° C., an air permeation resistance of the membrane is not greater than 300 sec/100 cc Air, and a thickness of the membrane is not greater than 20 μm.