PURPOSE: To prevent resin from being pressed out beyond the width of release sheet by a method wherein the pressing-out of resin outside the roll length of one roll of a pair of rolls is allowed at the pressing of a laminated body under the condition that the roll length of the one roll is set to be smaller than the width of the release sheet and, at the same time, equal to or longer than the width of prepreg to be produced.
CONSTITUTION: Release sheets 42 and 43, which are uncoiled from rolls 45 and 46, so as to be piled to a sheet like reinforcing fiber bundle from above and below with guide rolls 47 and 48. After being heated and passed through two-stage press roll 50 for pressing, the resins 44 on the release sheets are transferred to, impregnated in and spread to reinforcing fiber bundle 41 so as to produce prepreg 51. The roll lengths L of upper rolls 52 and 54 are set to be shorter than the width Ws of the release sheets 42 and 43 and equal to or longer than the width of the prepreg 51. The roll length of lower side rolls 53 and 55 are set to be longer than the width of the release sheets 42 and 43. Some part of the resin 44 is pressed outside the shorter roll 52 between the release sheets 42 and 43. At the position pressed out, the resin is not pressurized and is brought under the state of resin stagnant 60, resulting in keeping the resin within the widths Ws of the release sheets 42 and 43.
TOKIZANE MASARU
OHARA YUKIO
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