Title:
部分分繊繊維束の製造方法
Document Type and Number:
Japanese Patent JP7396046
Kind Code:
B2
Abstract:
Aiming at providing a partially separated fiber bundle which can yield chopped fiber with more uniform width of separated fiber, capable of composing a fiber-reinforced resin molding material having excellent mechanical properties, and at providing a manufacturing method which enables continuous and stable provision of the partially separated fiber bundle, disclosed is a partially separated fiber bundle that includes a separated fiber section and an unseparated fiber section, being configured to give a ratio Amax/Amin of 1.1 or larger and 3 or smaller, when the number of fiber bundles contained in the width direction of the partially separated fiber bundle (fiber separating number: Nn [units]) measured at a freely selected point Pn (where, n represents an integer of 1 to 100, and freely selected points Pn and Pn+1, excluding n = 100, being 50 cm or more away from each other), is divided by a full width of Wn [mm] of the partially separated fiber bundle, to calculate the fiber separating number per unit width An (units/mm), and assuming its maximum value as Amax (units/mm) and its minimum value as Amin (units/mm) .
Inventors:
Akihiko Matsui
Masaru Tateyama
Satoshi Seike
Mitsutaka Fuse
Hiroshi Hirano
Kazuma Ura
Masaru Tateyama
Satoshi Seike
Mitsutaka Fuse
Hiroshi Hirano
Kazuma Ura
Application Number:
JP2019542235A
Publication Date:
December 12, 2023
Filing Date:
July 30, 2019
Export Citation:
Assignee:
Toray Industries, Inc.
International Classes:
D02J1/18; D06M15/59
Domestic Patent References:
| JP2016160534A |
Foreign References:
| WO2017221657A1 | ||||
| WO2016088441A1 | ||||
| WO2019194090A1 |
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