公开(公告)号：US20220314154A1

公开(公告)日：2022-10-06

申请号：US17652310

申请日：2022-02-24

Applicant: NGK INSULATORS, LTD.

Inventor： Yoshihiro SATO ,  Shuji UEDA ,  Koichi SENDO ,  Yutaka ISHII ,  Yuichi TAJIMA ,  Seiya NAKANO ,  Ken ITAZU

IPC: B01D46/24

Abstract: A pillar-shaped honeycomb structure including a plurality of first cells extending from an inlet side end surface to an outlet side end surface, and a plurality of second cells extending from the inlet side end surface to the outlet side end surface, with a porous partition wall interposed therebetween, wherein a porous film having a porosity higher than that of the partition walls is provided on a surface of each of the first cells, and at a cross-section orthogonal to the direction in which the first cells of the pillar-shaped honeycomb structure filter extend, the average thickness of the porous film in the central portion is larger than the average thickness of the porous film in the outer peripheral portion.

公开(公告)号：US20150266223A1

公开(公告)日：2015-09-24

申请号：US14645778

申请日：2015-03-12

Applicant: NGK Insulators, Ltd.

Inventor： Shuji UEDA ,  Kosuke NOBIKI

IPC: B29C47/00 ,  B28B11/16 ,  B28B1/50 ,  B28B11/12

CPC classification number: B29C48/11 ,  B28B1/50 ,  B28B3/24 ,  B28B3/269 ,  B28B11/12 ,  B28B11/16 ,  B29L2022/007 ,  B30B11/224

Abstract: A manufacturing method of a honeycomb formed body includes a forming step of extruding a coupled forming raw material billet from a honeycomb body forming die to obtain a honeycomb-shaped formed product, the coupled forming raw material billet having a colorant applied on at least one of coupling surfaces between each forming raw material billets to be coupled; a cutting step of cutting the formed product to obtain a plurality of honeycomb formed bodies; and a separating step of separating the plurality of honeycomb formed bodies into a colorant-containing honeycomb formed bodies and a colorant non-containing honeycomb formed bodies.

Abstract translation: 一种蜂窝成形体的制造方法，其特征在于，包括：成形工序，从蜂窝体成形模挤出成形原料坯料，得到蜂窝状成形体，所述成形原料坯料具有涂覆在至少一个 每个成形原料坯料之间的耦合表面; 切割成形产品以获得多个蜂窝成形体的切割步骤; 以及将多个蜂窝成形体分离成含着色剂的蜂窝成形体和不着色剂的蜂窝成形体的分离工序。

公开(公告)号：US20210299646A1

公开(公告)日：2021-09-30

申请号：US17177377

申请日：2021-02-17

Applicant: NGK INSULATORS, LTD.

Inventor： Shuji UEDA ,  Shungo NAGAI ,  Hiroaki HAYASHI

IPC: B01J35/04 ,  B01J37/00 ,  C04B38/00 ,  B01D53/88 ,  B01D39/20 ,  B01D46/24

Abstract: A pillar-shaped honeycomb structure including an outer peripheral side wall, a plurality of first cells provided on an inner peripheral side of the outer peripheral side wall, the first cells extending from a first end surface to a second end surface, each opening on the first end surface and having a sealing portion with an average void ratio of 4% or less on the second end surface, and a plurality of second cells provided on the inner peripheral side of the outer peripheral side wall, the second cells extending from the first end surface to the second end surface, each having a sealing portion with an average void ratio of 4% or less on the first end surface and opening on the second end surface, the first cells and the second cells being alternately arranged adjacent to each other with a partition wall interposed therebetween.

公开(公告)号：US20210268688A1

公开(公告)日：2021-09-02

申请号：US17147779

申请日：2021-01-13

Applicant: NGK Insulators, Ltd.

Inventor： Koichi SENDO ,  Yu TORII ,  Shuji UEDA ,  Shungo NAGAI

IPC: B28B3/20 ,  B28B11/24 ,  B01D46/00 ,  B01D46/24 ,  B01D39/20 ,  F01N3/022

Abstract: A manufacturing method of a honeycomb filter includes a kneaded material preparation process, a forming process, and a firing process, wherein the cordierite forming raw material contains porous silica as an inorganic pore former, in a cumulative particle size distribution of the cordierite forming raw material, particle diameters (μm) of 10% by volume, 50% by volume, and 90% by volume of the total volume from a small diameter side, are denoted by D(a) 10, D(a) 50 and D(a) 90, respectively, and a particle diameter (μm) of 50% by volume of the total volume from the small diameter side is denoted by D(b) 50 in a cumulative particle size distribution of the organic pore former, and the cordierite forming raw material and the organic pore former satisfy given expressions.

公开(公告)号：US20210268478A1

公开(公告)日：2021-09-02

申请号：US17148918

申请日：2021-01-14

Applicant: NGK Insulators, Ltd.

Inventor： Koichi SENDO ,  Yu TORII ,  Shungo NAGAI ,  Shuji UEDA

IPC: B01J21/04 ,  B01D46/00 ,  B01D46/24 ,  B01D39/20 ,  B28B3/20 ,  B28B11/24 ,  B01J35/04 ,  B01J37/00 ,  B01J37/08 ,  F01N3/022 ,  F01N3/28

Abstract: A manufacturing method of a honeycomb filter includes a kneaded material preparation process, a forming process and a firing process, wherein the cordierite forming raw material contains at least one of porous silica and fused silica, particle diameters (μm) of 10% by volume, 50% by volume and 90% by volume, from a small diameter side, are denoted by D(a) 10, D(a) 50 and D(a) 90 in a cumulative particle size distribution of the cordierite forming raw material, and a particle diameter (μm) of 50% by volume from a small diameter side is denoted by D(b) 50 in a cumulative particle size distribution of the organic pore former, D(b) 50 is 40 μm or less, and a cordierite forming raw material and an organic pore former satisfy given expressions.

公开(公告)号：US20210270162A1

公开(公告)日：2021-09-02

申请号：US17147759

申请日：2021-01-13

Applicant: NGK Insulators, Ltd.

Inventor： Koichi SENDO ,  Yu TORII ,  Shuji UEDA ,  Shungo NAGAI

IPC: F01N3/022 ,  B01J35/04 ,  C04B38/00

Abstract: A honeycomb filter includes a pillar-shaped honeycomb structure body having a porous partition wall disposed to surround a plurality of cells which serve as fluid through channels extending from a first end face to a second end face; and a plugging portion provided at an open end on the first end face side or the second end face side of each of the cells, wherein the partition wall is composed of a material containing cordierite as a main component thereof, and a number per unit area of pores which exist at a surface of the partition wall and which have equivalent circle diameters exceeding 3.0 μm is 600 per mm2 or more.

公开(公告)号：US20180319114A1

公开(公告)日：2018-11-08

申请号：US16032360

申请日：2018-07-11

Applicant: NGK INSULATORS, LTD.

Inventor： Takayoshi SHIBAYAMA ,  Hideki OKA ,  Shuji UEDA ,  Hiroyuki SUENOBU

IPC: B29D99/00 ,  B01D39/20 ,  C04B35/195 ,  C04B35/626 ,  B01J35/04 ,  B01D46/24 ,  B01J21/14

CPC classification number: B29D99/0089 ,  B01D39/20 ,  B01D39/2086 ,  B01D39/2089 ,  B01D46/2418 ,  B01J21/14 ,  B01J35/04 ,  B01J37/30 ,  C04B35/195 ,  C04B35/6263 ,  C04B35/63 ,  C04B38/00

Abstract: A manufacturing method of a honeycomb structure includes a forming step of preparing a forming raw material containing a cordierite forming material and an inorganic binder, and kneading and forming the prepared forming raw material to have a honeycomb shape; and a firing step of firing the prepared formed body. In the forming step, as the inorganic binder, smectite is used in which at least parts of interlayer metal cations are ion-exchanged with non-metal cations. In the smectite, a total amount of sodium to be contained in the smectite is 1.6 mass % or less in terms of oxides to 100 mass % of the smectite. A content ratio of the smectite in the forming raw material is 0.5 parts by mass or more and 4.0 parts by mass or less to 100 parts by mass of the cordierite forming material.

公开(公告)号：US20220314250A1

公开(公告)日：2022-10-06

申请号：US17578773

申请日：2022-01-19

Applicant: NGK INSULATORS, LTD.

Inventor： Yoshihiro SATO ,  Shuji UEDA ,  Yuichi TAJIMA ,  Seiya NAKANO ,  Ken ITAZU ,  Koichi SENDO ,  Yutaka ISHII

IPC: B05B7/14 ,  B01D46/00 ,  B01D46/24

Abstract: A method for manufacturing a pillar-shaped honeycomb structure filter including; attaching ceramic particles to a surface of the first cells by ejecting an aerosol including the ceramic particles toward the inlet side end surface from a direction perpendicular to the inlet side end surface while applying a suction force to the outlet side end surface to suck the ejected aerosol from the inlet side end surface, wherein the ejection of the aerosol is carried out using an aerosol generator including a drive gas flow path for flowing a pressurized drive gas, a supply port provided on the way of the drive gas flow path and capable of sucking the ceramic particles from an outer peripheral side of the drive gas flow path toward an inside of the drive gas flow path, and a nozzle attached to a tip of the drive gas flow path and capable of ejecting the aerosol.

公开(公告)号：US20210270161A1

公开(公告)日：2021-09-02

申请号：US17147741

申请日：2021-01-13

Applicant: NGK Insulators, Ltd.

Inventor： Koichi SENDO ,  Yu TORII ,  Shuji UEDA ,  Shungo NAGAI

IPC: F01N3/022 ,  B01J35/04 ,  C04B38/00

Abstract: A honeycomb filter includes a pillar-shaped honeycomb structure body having a porous partition wall disposed to surround a plurality of cells and a plugging portion provided at an open end on a first end face side or a second end face side of each of the cells, wherein the partition wall is composed of a material containing cordierite as a main component thereof, a number per unit area of pores which exist at a surface of the partition wall and which have equivalent circle diameters exceeding 3.0 μm is 1400 per mm2 or more, and, in a pore diameter distribution which indicates a cumulative pore volume of the partition wall, with a log pore diameter on a horizonal axis and a log differential pore volume (cm3/g) on a vertical axis, a half-value width of a first peak that includes a maximum value of the log differential pore volume is 0.30 or less.

公开(公告)号：US20150273435A1

公开(公告)日：2015-10-01

申请号：US14660041

申请日：2015-03-17

Applicant: NGK Insulators, Ltd.

Inventor： Mitsuharu ONO ,  Fumiharu SATO ,  Shuji UEDA ,  Hiroyuki SUENOBU

IPC: B01J21/16 ,  B01J23/30 ,  F01N3/022 ,  B01J35/00 ,  B01D53/94 ,  B01D46/24 ,  B01J35/04 ,  B01J21/12

CPC classification number: B01J21/16 ,  B01D46/2418 ,  B01D53/945 ,  B01D2255/20707 ,  B01D2255/20723 ,  B01D2255/20776 ,  B01D2255/2092 ,  B01D2255/30 ,  B01J21/12 ,  B01J23/30 ,  B01J35/0006 ,  B01J35/04 ,  C03C3/087 ,  C03C3/091 ,  C03C14/004 ,  C04B35/14 ,  C04B35/62665 ,  C04B35/6316 ,  C04B38/0006 ,  C04B38/0074 ,  C04B38/0096 ,  C04B38/067 ,  C04B2111/00793 ,  C04B2111/0081 ,  C04B2235/3201 ,  C04B2235/3418 ,  C04B2235/349 ,  C04B2235/36 ,  C04B2235/5436 ,  C04B2235/9607 ,  F01N3/0222 ,  Y10T428/24149 ,  C04B38/068

Abstract: There is disclosed a honeycomb structure. A honeycomb structure includes a pillar-shaped honeycomb structure body having partition walls defining a plurality of cells which become through channels for a fluid and extend from a first end face to a second end face, the partition walls are constituted of a porous body having aggregates and a bonding material to bond the aggregates to one another in a state where pores are formed among the aggregates, the aggregates include molten silica particles, the bonding material includes glass, a content ratio of SiO2 in the porous body is 70 mass % or more, and a thermal expansion coefficient of the porous body at 40 to 800° C. is from 1.5 to 6.0×10−6/° C.

Abstract translation: 公开了一种蜂窝结构体。 蜂窝结构体包括柱状蜂窝结构体，其具有限定多个细胞的分隔壁，所述多个细胞变成通过流体的通道并且从第一端面延伸到第二端面，所述隔壁由具有聚集体的多孔体构成 以及在聚集体之间形成孔的状态下将聚集体彼此粘合的接合材料，所述聚集体包括熔融二氧化硅颗粒，所述接合材料包括玻璃，所述多孔体中的SiO 2的含量比为70质量％以上 ，多孔体在40〜800℃的热膨胀系数为1.5〜6.0×10 -6 /℃。