| 摘要 |
The present invention provides a winding core that is lightweight and has excellent dimensional precision and ability to reduce long length bending. A winding core obtained by molding a resin composition containing (A) at least one type of noncrystalline resin selected from styrene resins, polycarbonates, polyarylates, polyphenylene oxides and polysulfones, (B) a polylactic acid, and an inorganic filler, wherein the resin composition is obtained by blending 50-80 parts by mass of the noncrystalline resin (A) with 20-50 parts by mass of the polylactic acid resin (B) (provided that the total of the noncrystalline resin (A) and the polylactic acid (B) is 100 parts by mass). Preferably, a winding core obtained by also blending 10-40 parts by mass of the inorganic filler (C). |
