PACKAGE FOR ROLL TYPE PREPREG

摘要

PROBLEM TO BE SOLVED: To prevent moisture absorption of a paper tube to compose a winding core in a package of a roll type prepreg, and prevent generation of a width direction line in the prepreg made by a step of a winding starting part of the prepreg. SOLUTION: Non-moisture permeable film 15 such as polyester film is wound for plural rounds on an outer circumferential surface of the paper tube 11 for composing a winding core. A starting side end part of the prepreg 10 is rolled with the non-moisture permeable film 15 when it is wound around the paper tube 11.