Fiber package
AssigneeMitsubishi Chemical Corporation
InventorsJunji Kanehagi, Yukihiro Mizutori
Life of this patent
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Abstract
An object of the present invention is to provide a fiber package in which a partially split carbon fiber bundle is wound around a bobbin, and which has no problem in unwindability. A fiber package is provided, which is a square-end type fiber package formed by traverse winding a fiber bundle (12) around a bobbin, in which the fiber bundle (12) is partially split into sub-bundles (11), and the width W of the fiber bundle (12) is smaller than the total sum of the widths WS of the sub-bundles (12). A fiber package is also provided, which is a square end type fiber package formed by traverse winding a fiber bundle (12) around a bobbin, in which the fiber bundle (12) is partially split into sub-bundles (11) and is wound around the bobbin so as to cause the sub-bundles (11) to overlap each other.
Claims19
A fiber package, which is a square end type fiber package formed by traverse winding a carbon fiber bundle around a bobbin,
- wherein the carbon fiber bundle is partially split into sub-bundles in a longitudinal direction of the carbon fiber bundle and is wound around the bobbin so as to cause the sub-bundles to overlap each other,
- a width of the carbon fiber bundle is smaller than a total sum of widths of the sub-bundles,
- the carbon fiber bundle has more than one slit rows, and each of the slit rows includes a plurality of slits in the longitudinal direction, and
- the plurality of slits satisfies LS/(LS+LG) of 90% or more, in which LS is a slit length of each of the plurality of slits, and LG is a gap length between the plurality of slits adjacent to each other.
Dependencies are inferred from the claim text.