公开(公告)号：US11813785B2

公开(公告)日：2023-11-14

申请号：US17386635

申请日：2021-07-28

Applicant: Shibaura Machine Co., Ltd.

Inventor： Akiyoshi Kobayashi ,  Shigeyuki Fujii ,  Takafumi Sameshima

IPC: B29C48/51 ,  B29C48/57 ,  B29C48/67 ,  B29C48/285 ,  B29C48/68 ,  B29C48/25 ,  B29B7/48 ,  B29C48/395 ,  B29C48/80 ,  B29B7/82 ,  B29C48/40 ,  B29C48/63 ,  B29C48/03 ,  B29C48/55 ,  B29C48/53 ,  B29C48/54 ,  B29K101/12 ,  B29K105/00

CPC classification number: B29C48/51 ,  B29B7/483 ,  B29B7/488 ,  B29B7/489 ,  B29C48/2511 ,  B29C48/288 ,  B29C48/57 ,  B29C48/67 ,  B29C48/681 ,  B29B7/823 ,  B29B7/826 ,  B29C48/03 ,  B29C48/397 ,  B29C48/402 ,  B29C48/53 ,  B29C48/54 ,  B29C48/55 ,  B29C48/63 ,  B29C48/832 ,  B29C48/834 ,  B29K2101/12 ,  B29K2105/25

Abstract: A conveyance portion, a barrier portion, and a path are provided at places of a portion of a screw main body in which a kneading portion is provided. In at least one of the places, an entrance is opened to cause raw materials, conveyance of which is limited by a barrier portion to increase pressure on the raw materials, to flow in. The raw materials flowing in from the entrance flow through the path in the opposite direction to a conveyance direction of the conveyance portion. An exit is opened in an outer circumferential surface of the screw main body at a position outside the conveyance portion in which the entrance is opened.

公开(公告)号：US11820062B2

公开(公告)日：2023-11-21

申请号：US17355997

申请日：2021-06-23

Applicant: Shibaura Machine Co., Ltd. ,  HSP Technologies Inc.

Inventor： Akiyoshi Kobayashi ,  Shigeyuki Fujii ,  Takafumi Sameshima ,  Hiroshi Shimizu

IPC: B29C48/51 ,  B29C48/49 ,  B29C48/40 ,  B29B7/42 ,  B29B7/48 ,  B29B7/84 ,  B29C48/57 ,  B29C48/385 ,  B29C48/76 ,  B29B7/74 ,  B29C48/395 ,  B29B7/82 ,  B29C48/00 ,  B29C48/405 ,  B29K33/00 ,  B29K69/00

CPC classification number: B29C48/49 ,  B29B7/422 ,  B29B7/426 ,  B29B7/429 ,  B29B7/483 ,  B29B7/487 ,  B29B7/489 ,  B29B7/7461 ,  B29B7/845 ,  B29C48/385 ,  B29C48/402 ,  B29C48/51 ,  B29C48/57 ,  B29C48/766 ,  B29B7/826 ,  B29C48/023 ,  B29C48/397 ,  B29C48/405 ,  B29K2033/12 ,  B29K2069/00

Abstract: A screw includes a screw main body, a conveyance portion conveying a raw material, and a passage provided in the screw main body. The passage includes a first passage element, a second passage element, and a third passage element. The screw main body has a plurality of cylindrical bodies arranged in an axial direction of the rotating shaft. At least a portion of the conveyance portion is formed on outer peripheral surfaces of the cylindrical bodies adjacent to each other, and the passage is formed in the cylindrical body so as to cross over between the adjacent cylindrical bodies.

公开(公告)号：US11584830B2

公开(公告)日：2023-02-21

申请号：US16412438

申请日：2019-05-15

Applicant: SHIBAURA MACHINE CO., LTD. ,  HSP TECHNOLOGIES INC.

Inventor： Takafumi Sameshima ,  Yoshio Iizuka ,  Kaho Osada ,  Hiroshi Shimizu

IPC: C08J3/20 ,  C08K3/04 ,  C08F212/08 ,  C08F236/10 ,  H01B1/24 ,  B29K105/16 ,  B29K9/06 ,  B29K507/04 ,  B29C48/88

Abstract: In a production method for a conductive composite material for an extruder that continuously discharges a kneaded product produced by kneading a raw material using a screw, the screw has a the screw body, the raw material transported along an outer circumferential surface of the screw body receives increased pressure by a barrier part in a transport part and is introduced to a passage from an inlet, and while the kneaded product is continuously discharged, the raw material transported along the outer circumferential surface of the screw body flows in the passage of the extruder and then is guided to the transport part via an outlet provided in the screw body, the raw material contains a conductive filler and a thermoplastic elastomer.

公开(公告)号：US11781254B2

公开(公告)日：2023-10-10

申请号：US17311685

申请日：2020-12-21

Applicant: Shibaura Machine Co., Ltd. ,  NATIONAL UNIVERSITY CORPORATION KANAZAWA UNIVERSITY

Inventor： Yuya Sasai ,  Takafumi Sameshima ,  Yoshio Iizuka ,  Kaho Osada ,  Kentaro Taki

IPC: D04H1/56 ,  B29C48/88 ,  B29C48/86 ,  B29C48/30 ,  B29C48/05 ,  B29C48/285 ,  B29B7/48 ,  B29B7/72 ,  B29B7/82 ,  D04H1/4291

CPC classification number: D04H1/565 ,  B29B7/48 ,  B29B7/726 ,  B29B7/728 ,  B29B7/82 ,  B29C48/05 ,  B29C48/298 ,  B29C48/30 ,  B29C48/865 ,  B29C48/88 ,  D04H1/4291 ,  B29C2793/0081 ,  B29C2948/922 ,  B29C2948/92209

Abstract: A production method for a low molecular weight polymer suitable for a melt-blown non-woven fabric and a production device for melt-blown non-woven fabric, with which a high molecular weight polymer can be reduced in molecular weight by applying a shear force to the high molecular weight polymer without adding an additive. The low molecular weight polymer and the melt-blown non-woven fabric are produced using a continuous high shearing device that applies a shear force to the high molecular weight polymer serving as a raw material by rotation of a screw body to reduce the molecular weight of the high molecular weight polymer so as to obtain a low molecular weight polymer, and cools the low molecular weight polymer by passing the low molecular weight polymer through a passage arranged in the axial direction inside the screw body.

公开(公告)号：US20210362374A1

公开(公告)日：2021-11-25

申请号：US17045242

申请日：2019-03-25

Applicant: Shibaura Machine Co., Ltd.

Inventor： Takafumi Sameshima ,  Yoshio Iizuka ,  Kaho Osada

IPC: B29B7/42 ,  B29B7/48 ,  C08L23/12 ,  C08J3/20

Abstract: A kneading method includes conveying a raw material along a conveyance path; and increasing the raw material in pressure by restricting a conveyer from conveying the raw material by a barrier, causing the raw material with an increased pressure to flow into a passage from an inlet located at the conveyer, circulating the raw material having flowed into the passage to an outlet in the same direction as the conveying direction of the conveyer, and causing the raw material having circulated in the passage to flow out from the outlet to the outer circumference of a screw body. The raw material includes a polypropylene-based resin composition containing polypropylene and olefin rubber.