公开(公告)号：US20200263351A1

公开(公告)日：2020-08-20

申请号：US16648415

申请日：2018-08-31

申请人： KURARAY CO., LTD

发明人： Masashi MEGURO ,  Hiroyuki HISHIDA

IPC分类号： D06N3/00 ,  D06N3/14

摘要： Disclosed is a napped artificial leather including: a non-woven fabric obtained by entangling fibers; and an elastic polymer, wherein a 100% modulus (A) of the elastic polymer and a content (B) of the elastic polymer satisfy the relational expression: B≥−1.8A+40, A>0, and the non-woven fabric has an abrasion loss (C) of 45 mg or less, in accordance with JIS L 1096 (6.17.5E method, Martindale method) under a pressing load of 12 kPa (gf/cm2) after 20000 abrasion cycles.

公开(公告)号：US20210310186A1

公开(公告)日：2021-10-07

申请号：US17269593

申请日：2019-07-29

申请人： KURARAY CO., LTD.

发明人： Masashi MEGURO ,  Hitoshi NAKATSUKA

IPC分类号： D06N3/14 ,  D06N3/12

摘要： Disclosed is an artificial leather base material including: a non-woven fabric that is an entangle body of fibers (A) and fibers (B); and an elastic polymer applied inside the non-woven fabric, wherein the fibers (A) are crimped fibers that are formed from two types of resins with intrinsic viscosities different from each other, and that are filaments of 0.6 dtex or more, and the fibers (B) are ultrafine fibers of less than 0.6 dtex.

公开(公告)号：US20210115610A1

公开(公告)日：2021-04-22

申请号：US16768967

申请日：2018-11-14

申请人： KURARAY CO., LTD.

发明人： Daisuke MATSUDA ,  Masashi MEGURO ,  Michinori FUJISAWA

IPC分类号： D06C23/02 ,  D06N3/00 ,  D01F8/14 ,  B32B7/09 ,  D06N3/14

摘要： Disclosed is a printed napped sheet or a printing sheet including a fabric having a napped surface, wherein the napped surface is printed and has, as measured by a surface roughness measurement in accordance with ISO 25178, an arithmetic mean height (Sa) of a predetermined value or less (e.g., 30 μm or less) in both a grain direction and a reverse grain direction, and the napped surface has a density of peaks (Spd), having a height of 100 μm or more from a mean height, of a predetermined value or less (e.g., 30/432 mm2 or less) in both the grain direction and the reverse grain direction. Also disclosed is a printed napped sheet wherein the napped surface has a difference (absolute value) in density of peaks (Spd), between the grain direction and the reverse grain direction, of 20/432 mm2 or less.

公开(公告)号：US20190127908A1

公开(公告)日：2019-05-02

申请号：US16306697

申请日：2017-06-21

申请人： KURARAY CO., LTD.

发明人： Masashi MEGURO

IPC分类号： D06N3/00 ,  D06N3/18

摘要： Disclosed is a napped artificial leather including: a fabric that has been impregnated with a first elastic polymer and that has a napped surface including napped ultrafine fibers with an average fineness of 0.01 to 0.5 dtex, wherein the napped surface has, as measured by a surface roughness measurement in accordance with ISO 25178, an arithmetic mean height (Sa) of 30 μm or less in both a grain direction and a reverse grain direction, and a density of peaks (Spd) having a height of 100 μm or more from a mean height, of 30/432 mm2 or less in both of the grain direction and the reverse grain direction, and a difference (absolute value) in the density of peaks (Spd) between the grain direction and the reverse grain direction is 20/432 mm2 or less.

公开(公告)号：US20220074133A1

公开(公告)日：2022-03-10

申请号：US17415877

申请日：2019-11-28

申请人： KURARAY CO., LTD.

发明人： Kimio NAKAYAMA ,  Akihisa IWAMOTO ,  Masashi MEGURO

IPC分类号： D06N3/00

摘要： Disclosed is a napped artificial leather including: a fiber-entangled body including ultrafine fibers having a fineness of 0.5 dtex or less; and an elastic polymer impregnated into the fiber-entangled body, the napped artificial leather having a thickness of 0.25 to 1.5 mm, and including a main surface that is a napped surface formed by napping the ultrafine fibers. The napped artificial leather further includes phosphorous-based flame retard ant particles attached to the elastic polymer such as a polyurethane, the phosphorous-based flame retardant particles being locally present in a range of a thickness of 200 pm or less from a back surface opposite to the main surface. The phosphorous-based flame retardant particles have an average particle size of 0.1 to 30 μm, a phosphorus atom content of 14 mass % or more, and a solubility in water at 30° C. of 0.2 mass % or less, and a melting point, or, in the absence of a melting point, a decomposition temperature, of 150° C. or more, and a content ratio of the phosphorous-based flame retardant particles is 1 to 6 mass % as a content ratio in terms of phosphorus atoms.

公开(公告)号：US20200071879A1

公开(公告)日：2020-03-05

申请号：US16610535

申请日：2018-06-06

申请人： KURARAY CO., LTD.

发明人： Masashi MEGURO

IPC分类号： D06N3/00 ,  D06N3/14

摘要： A napped artificial leather including a non-woven fabric including ultrafine fibers and a polyurethane, the napped artificial leather including a napped surface formed by napping the ultrafine fibers on a surface thereof, wherein the napped surface has, after a Martindale abrasion test in accordance with JIS L 1096 (6.17.5E method, Martindale method) under a pressing load of 12 kPa and 50000 times of abrasions, a ratio of the polyurethane observed by a surface observation using an electron microscope in a portion that has been subjected to the Martindale abrasion test, of 4.0% or less.

公开(公告)号：US20200056329A1

公开(公告)日：2020-02-20

申请号：US16346742

申请日：2017-11-29

申请人： KURARAY CO., LTD.

发明人： Masashi MEGURO ,  Hitoshi NAKATSUKA

IPC分类号： D06N3/00

摘要： Disclosed is a napped artificial leather including: an artificial leather base material that includes a non-woven fabric of polyester fibers having a Young's modulus of 1 to 6 GPa, an average fiber-toughness of 8 to 40 cN·%, and a crystallinity of 35% or less, and an elastic polymer, the artificial leather base material having, on at least one surface thereof, a napped surface on which the polyester fibers are napped. Also disclosed are polyester fibers having a Young's modulus of 1 to 6 GPa, an average fiber-toughness of 8 to 40 cN·%, and a crystallinity of 35% or less, and a non-woven fabric including the polyester fibers.