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:
Oct. 08, 2024
Filed:
Oct. 04, 2022
Nitto Boseki Co., Ltd., Fukushima, JP;
Yosuke Nukui, Fukushima, JP;
Nitto Boseki Co., Ltd., Fukushima, JP;
Abstract
A method for manufacturing glass long fiber using recovered glass fiber, capable of manufacturing glass long fiber in which a recycle rate is increased, increase of a liquid phase temperature of molten glass and narrowing of an operating temperature range of the molten glass are suppressed, and a spinning temperature is low. The method includes a glass melting step of melting a glass raw material containing glass fiber recovered from a glass fiber-reinforced resin molded product, and a glass fiber mineral material to obtain molten glass; and a spinning step of spinning the molten glass to obtain glass long fiber, and a content of the recovered glass fiber in the glass raw material is in the range of 11 to 75% by mass, and differences in the contents of SiO, AlO, BO, and CaO between the glass fiber mineral material and the recovered glass fiber satisfy a prescribed relationship.