Carbon fiber package and process for producing the same

A carbon fiber package obtained by winding a carbon fiber bundle having a fineness of 25,000 to 35,000 deniers on a square-end bobbin, wherein a width per unit fineness of the carbon fiber bundle is in the range of 0.30×10−3 to 0.63×10−3 mm/denier, a traverse angle in the beginning of winding is in the range of 13 to 14°, a traverse angle in the end of winding is 3° or larger, and a fractional portion W0 of a winding ratio W is in the range of 0.90 to 0.91.

A carbon fiber package obtained by winding a carbon fiber bundle having a fineness of 25,000 to 35,000 deniers on a square-end bobbin, wherein a width per unit fineness of the carbon fiber bundle is in the range of 0.30×10−3 to 0.63×10−3 mm/denier, a traverse angle in the beginning of winding is in the range of 10 to 11°, a traverse angle in the end of winding is 2° or larger, and a fractional portion W0 of a winding ratio W is in the range of 0.07 to 0.08.

A carbon fiber package obtained by winding a carbon fiber bundle having a fineness of 25,000 to 35,000 deniers on a square-end bobbin, wherein a width per unit fineness of the carbon fiber bundle is in the range of 0.30×10−3 to 0.63×10−3 mm/denier, a traverse angle in the beginning of winding is in the range of 13 to 14°, a traverse angle in the end of winding is 5° or larger, and a fractional portion W0 of a winding ratio W is in the range of 0.09 to 0.10.

A carbon fiber package obtained by winding a carbon fiber bundle having a fineness of 25,000 to 35,000 deniers on a square-end bobbin, wherein a width per unit fineness of the carbon fiber bundle is in the range of 0.30×10−3 to 0.63×10−3 mm/denier, a traverse angle in the beginning of winding is in the range of 13 to 14°, a traverse angle in the end of winding is 3° or larger, and a fractional portion W0 of a winding ratio W is in the range of 0.92 to 0.93.

A carbon fiber package obtained by winding a carbon fiber bundle having a fineness of 25,000 to 35,000 deniers on a square-end bobbin, wherein a width per unit fineness of the carbon fiber bundle is in the range of 0.30×10−3 to 0.63×10−3 mm/denier, a traverse angle in the beginning of winding is in the range of 10 to 11°, a traverse angle in the end of winding is 2° or larger, and a fractional portion W0 of a winding ratio W is in the range of 0.92 to 0.93.

A method for producing a carbon fiber package, comprising:

• winding a carbon fiber bundle having a fineness of 25,000 to 35,000 deniers on a square-end bobbin, wherein a width per unit fineness of the carbon fiber bundle is made to be in the range of 0.30×10−3 to 0.63×10−3 mm/denier, a traverse angle in the beginning of winding is made to be in the range of 13 to 14°, a traverse angle in the end of winding is made to be 3° or larger, and a fractional portion W0 of a winding ratio W is in the range of 0.07 to 0.08.

A method for producing a carbon fiber package, comprising:

• winding a carbon fiber bundle having a fineness of 25,000 to 35,000 deniers on a square-end bobbin, wherein a width per unit fineness of the carbon fiber bundle is made to be in the range of 0.30×10−3 to 0.63×10−3 mm/denier, a traverse angle in the beginning of winding is made to be in the range of 13 to 14°, a traverse angle in the end of winding is made to be 3° or larger, and a fractional portion W0 of a winding ratio W is in the range of 0.90 to 0.91.

A method for producing a carbon fiber package, comprising:

• winding a carbon fiber bundle having a fineness of 25,000 to 35,000 deniers on a square-end bobbin, wherein a width per unit fineness of the carbon fiber bundle is made to be in the range of 0.30×10−3 to 0.63×10−3 mm/denier, a traverse angle in the beginning of winding is made to be in the range of 10 to 11°, a traverse angle in the end of winding is made to be 2° or larger, and a fractional portion W0 of a winding ratio W is in the range of 0.07 to 0.08.

A method for producing a carbon fiber package, comprising:

• winding a carbon fiber bundle having a fineness of 25,000 to 35,000 deniers on a square-end bobbin, wherein a width per unit fineness of the carbon fiber bundle is made to be in the range of 0.30×10−3 to 0.63×10−3 mm/denier, a traverse angle in the beginning of winding is made to be in the range of 13 to 14°, a traverse angle in the end of winding is made to be 5° or larger, and a fractional portion W0 of a winding ratio W is in the range of 0.09 to 0.10.

A method for producing a carbon fiber package, comprising:

• winding a carbon fiber bundle having a fineness of 25,000 to 35,000 deniers on a square-end bobbin, wherein a width per unit fineness of the carbon fiber bundle is made to be in the range of 0.30×10−3 to 0.63×10−3 mm/denier, a traverse angle in the beginning of winding is made to be in the range of 13 to 14°, a traverse angle in the end of winding is made to be 3° or larger, and a fractional portion W0 of a winding ratio W is in the range of 0.92 to 0.93.

A method for producing a carbon fiber package, comprising:

• winding a carbon fiber bundle having a fineness of 25,000 to 35,000 deniers on a square-end bobbin, wherein a width per unit fineness of the carbon fiber bundle is made to be in the range of 0.30×10−3 to 0.63×10−3 mm/denier, a traverse angle in the beginning of winding is made to be in the range of 10 to 11°, a traverse angle in the end of winding is made to be 2° or larger, and a fractional portion W0 of a winding ratio W is in the range of 0.92 to 0.93.