The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 10, 2019
Filed:
Oct. 07, 2016
Yachiyo Industry Co., Ltd., Saitama, JP;
The Japan Steel Works, Ltd., Tokyo, JP;
Kunihiko Kondo, Saitama, JP;
Kazuhiro Ohtaki, Saitama, JP;
Yuji Minowa, Saitama, JP;
Toshinari Takeyama, Kanagawa, JP;
Toshio Kagitani, Kanagawa, JP;
YACHIYO INDUSTRY CO., LTD., Saitama, JP;
THE JAPAN STEEL WORKS, LTD., Tokyo, JP;
Abstract
There is provided a parison guide which improves a flatness of parison with a simple configuration. A parison guide () guides a parison (P) which has an arc shape in horizontal cross section and is discharged from an extrusion apparatus (). The parison guide is fixed to a discharge-side end portion of the extrusion apparatus (). The parison guide includes a contact face () configured to come into contact with and guide an edge portion of the parison to flatten the parison. Preferably, the contact face () includes a curved surface, and the contact face () has a curvature of a horizontal cross section which gets smaller in a discharge direction.