Title:
ボール及びボールの製造方法
Document Type and Number:
Japanese Patent JP5467557
Kind Code:
B2
Abstract:
A ball manufacturing method comprising: a preparation step in which a tube (2) and a foaming material (A), which constitutes a foamed layer, are contained in a forming mold (11) with the foaming material (A) disposed outside the tube (2); a first forming step which, after the preparation step, presses the foaming material (A) against the forming surfaces (17a, 18a) of the forming mold (11); a foaming promoting step which, after the first forming step, reduces the force which presses the foaming material (A) against the forming surfaces (17a, 18a) to promote the foaming of the foaming material (A); a second forming step which, after the foaming promoting step, increases the force which presses the foaming material (A) against the forming surfaces (17a, 18a) to obtain the foamed layer; and a panel applying step which applies panels to the outer surface of the foamed layer.
Inventors:
Yukinori Nagao
Keisuke Tonari
Keisuke Tonari
Application Number:
JP2009119873A
Publication Date:
April 09, 2014
Filing Date:
May 18, 2009
Export Citation:
Assignee:
Morten Co., Ltd.
International Classes:
A63B45/00
Domestic Patent References:
| JP2008106150A | ||||
| JP2007056080A |
Foreign References:
| US20080051234 |
Attorney, Agent or Firm:
Maeda patent office
Hiroshi Maeda
Hiroshi Takeuchi
Takahisa Shimada
Yuji Takeuchi
Kazunari Ninomiya
Tomoo Harada
Iseki Katsumori
Seki Kei
Yasuya Sugiura
Hiroshi Maeda
Hiroshi Takeuchi
Takahisa Shimada
Yuji Takeuchi
Kazunari Ninomiya
Tomoo Harada
Iseki Katsumori
Seki Kei
Yasuya Sugiura