公开(公告)号：US20200206991A1

公开(公告)日：2020-07-02

申请号：US16814648

申请日：2020-03-10

Applicant: Panasonic Corporation

Inventor： Toshifumi Nagino ,  Masashi Hamabe

IPC: B29C45/00 ,  B29B7/72 ,  B29B9/14 ,  B29B7/90

Abstract: A molded article of a composite resin containing fibers includes a base resin 1 and a fibrous filler 2 having fibrillated ends in a fiber length direction. An expression Ho×0.4≤H≤Ho is satisfied where H is a maximum height for an unbroken first plate-like test piece having a thickness of 1 to 2 mm after the test piece is kept at −10° C. for three hours and then is hit by a dropped weight of 250 g; and Ho is as same maximum height for the unbroken second plate-like test piece only made of the base resin with a thickness of 1 to 2 mm as for the first plate-like test piece. An expression So×0.4≤S≤So is satisfied where S is a Charpy impact strength (JIS K 7111) of the molded article, and So is a Charpy impact strength of the molded article only made of the base resin.

公开(公告)号：US12054601B2

公开(公告)日：2024-08-06

申请号：US16545182

申请日：2019-08-20

Applicant: Panasonic Corporation

Inventor： Masayoshi Imanishi ,  Toshifumi Nagino ,  Masashi Hamabe ,  Shouma Nishino

IPC: C08L1/02 ,  C08K7/02 ,  C08L21/00

CPC classification number: C08L1/02 ,  C08L21/00 ,  C08K7/02

Abstract: A cellulose composite resin includes a base resin, a cellulose fiber, a dispersing agent, and a rubber-containing polymer, and an α-cellulose content in the cellulose fiber is 50% by mass or more and less than 80% by mass.

公开(公告)号：US20180311870A1

公开(公告)日：2018-11-01

申请号：US15874411

申请日：2018-01-18

Applicant: Panasonic Corporation

Inventor： Toshifumi Nagino ,  Masashi Hamabe

IPC: B29C45/00 ,  B29B9/06

Abstract: A molded article of a composite resin containing fibers includes a base resin 1 and a fibrous filler 2 having fibrillated ends in a fiber length direction. An expression Ho×0.4≤H≤Ho is satisfied where H is a maximum height for an unbroken first plate-like test piece having a thickness of 1 to 2 mm after the test piece is kept at −10° C. for three hours and then is hit by a dropped weight of 250 g; and Ho is as same maximum height for the unbroken second plate-like test piece only made of the base resin with a thickness of 1 to 2 mm as for the first plate-like test piece. An expression So×0.4≤S≤So is satisfied where S is a Charpy impact strength (JIS K 7111) of the molded article, and So is a Charpy impact strength of the molded article only made of the base resin.

公开(公告)号：US10822482B2

公开(公告)日：2020-11-03

申请号：US15817879

申请日：2017-11-20

Applicant: PANASONIC CORPORATION

Inventor： Masashi Hamabe ,  Toshifumi Nagino

IPC: C08L23/12 ,  C08J5/04

Abstract: Provided is a composite resin composition to be used as a material for a molded article produced by a molding machine. The composite resin composition includes a main ingredient resin 1 and a fibrous filler 2, and the fiber length direction end of the fibrous filler 2 is defibrated. The length of the defibrated portion 3 is 5% or more and 50% or less of the fiber length of the entire fibrous filler 2. The fiber diameter in the defibrated portion 3 of the fibrous filler 2 is 1/1000 or more and 1/10 or less the fiber diameter in the undefibrated portion. The modulus of elasticity of the fibrous filler 2 is higher than the modulus of elasticity of the main ingredient resin 1, and the difference between these moduli of elasticity is within 20 GPa.

公开(公告)号：US10654201B2

公开(公告)日：2020-05-19

申请号：US15497809

申请日：2017-04-26

Applicant: Panasonic Corporation

Inventor： Masateru Mikami ,  Masashi Hamabe ,  Takao Kuromiya

IPC: B29B7/00 ,  B29C43/00 ,  B29B9/14 ,  C08L1/02 ,  C08J5/18 ,  C08L23/10 ,  B29B7/90 ,  B29B11/16 ,  B29C55/00 ,  B29C55/12 ,  B29B9/06 ,  B29B7/74 ,  B29B7/48 ,  B29B9/16 ,  B29K23/00 ,  B29K105/16

Abstract: A composite resin molded body includes a base compound resin and a molten-kneaded mixture which contains an organic fibrous filler, and a dispersing agent. In the composite resin molded body, a content of the organic fibrous filler is at least 5 mass % and at most 70 mass %, and a proportion T of the organic fibrous filler carbonized in the composite resin molded body is equal to or less than 0.1.

公开(公告)号：US10584248B2

公开(公告)日：2020-03-10

申请号：US16184071

申请日：2018-11-08

Applicant: Panasonic Corporation

Inventor： Masashi Hamabe ,  Toshifumi Nagino ,  Takao Kuromiya ,  Masayoshi Imanishi ,  Shouma Nishino

IPC: C08L97/02 ,  B29B7/90 ,  B29C45/00 ,  B29B9/14 ,  C08J5/04 ,  C08K7/02 ,  B29K311/12 ,  B29K23/00 ,  C08L23/12

Abstract: A composite resin molded article including: a base resin; and a fibrous filler, wherein the fibrous filler is bent between one end side thereof and another end side thereof, and wherein the angle of the bending is 90 degrees or larger.

公开(公告)号：US11168202B2

公开(公告)日：2021-11-09

申请号：US16254814

申请日：2019-01-23

Applicant: Panasonic Corporation

Inventor： Toshifumi Nagino ,  Masashi Hamabe ,  Masayoshi Imanishi

IPC: C08L1/02 ,  C08L23/12 ,  C08J3/20 ,  C08J5/04 ,  C08K7/02

Abstract: For a fiber compound resin composition, a melt-kneading process is performed together with a base resin 1, a dispersant, etc. without performing a pretreatment through wet dispersion for the purpose of defibration treatment and modification treatment of a fibrous filler 2. As a result, each fiber of the fibrous filler 2 is defibrated from end portions in a fiber length direction, while a dispersant component put in at the same time is more selectively adsorbed to defibrated portions 3 at the end portions defibrated and increased in surface area. As a result, hydrophobization of the defibrated portions 3 is promoted as compared to a non-defibrated portion 4, so that a difference in hydrophobicity is formed in the fiber length direction of the fibrous filler 2. Therefore, even when the fibrous filler 2 is added in large amount, a melt viscosity during molding may be lowered without reducing a strength of a molded article.

公开(公告)号：US10596737B2

公开(公告)日：2020-03-24

申请号：US15842337

申请日：2017-12-14

Applicant: Panasonic Corporation

Inventor： Yuki Mita ,  Shouma Nishino ,  Hideo Mine ,  Masashi Hamabe ,  Toshifumi Nagino

IPC: B29C45/14 ,  C08J5/04 ,  B32B23/08 ,  B32B15/12 ,  B29B15/12 ,  B29C45/00 ,  B29C45/73 ,  B29K309/08 ,  B29K201/00 ,  B29K105/12 ,  B29L23/00 ,  B29C45/78

Abstract: A molded article 1 is made of a resin material 3 containing cellulose fibers 2. The molded article 1 has a surface portion 4 that is in a range satisfying TF≤0.1×T where T is the thickness of the molded article 1 and TF is a distance from the surface of the molded article 1, and the molded article 1 satisfies DF≥1.1×D where D is an average cellulose concentration of the overall molded article 1 and DF is an average cellulose concentration of the surface portion 4. Thus, the molded article suppresses an increase in bending modulus while considerably improving a tensile modulus.

公开(公告)号：US20180257277A1

公开(公告)日：2018-09-13

申请号：US15842337

申请日：2017-12-14

Applicant: Panasonic Corporation

Inventor： Yuki Mita ,  Shouma Nishino ,  Hideo Mine ,  Masashi Hamabe ,  Toshifumi Nagino

IPC: B29C45/14 ,  C08J5/04 ,  B32B23/08 ,  B29B15/12

Abstract: A molded article 1 is made of a resin material 3 containing cellulose fibers 2. The molded article 1 has a surface portion 4 that is in a range satisfying TF≤0.1×T where T is the thickness of the molded article 1 and TF is a distance from the surface of the molded article 1, and the molded article 1 satisfies DF≥1.1×D where D is an average cellulose concentration of the overall molded article 1 and DF is an average cellulose concentration of the surface portion 4. Thus, the molded article suppresses an increase in bending modulus while considerably improving a tensile modulus.