Title:
多重コアおよび多重コアを用いた中空製品の製造方法
Document Type and Number:
Japanese Patent JP7064556
Kind Code:
B2
Abstract:
The present invention relates to a multicore and a method of manufacturing a hollow product using the multicore enabling a hollow of a molded product to be molded more easily by casting and a quality problem to be addressed, and the multicore includes a first core, being made of a water-insoluble material, having a hollow formed in the first core and, having an opening formed at both ends of the first core so that the hollow is exposed to the outside through the opening, a second core, being made of a water-soluble material and disposed inside the hollow, and a coating layer, being configured to surround the first core to prevent the first core and the second core frombeing exposed to an outside, wherein the first core includes a plurality of spaces to allow a fluid supplied to an interior of the first core to flow toward the second core.
Inventors:
Yu, Jin-ho
Application Number:
JP2020191474A
Publication Date:
May 10, 2022
Filing Date:
November 18, 2020
Export Citation:
Assignee:
MH Technologies Incorporated
International Classes:
B22C9/10; B22D29/00
Domestic Patent References:
| JP56160854A |
Foreign References:
| WO2019045512A1 | ||||
| KR1020170128817A |
Attorney, Agent or Firm:
Takashima Hajime
Mitsuyoshi Kamada
Kyoko Doi
Yaeko Tamura
Hirofumi Taima
Atsuko Akai
Tomiya Tosaki
Dai Kitawaki
Mitsuyoshi Kamada
Kyoko Doi
Yaeko Tamura
Hirofumi Taima
Atsuko Akai
Tomiya Tosaki
Dai Kitawaki