METHOD OF DRYING PREPREG AND DEVICE FOR ITS IMPLEMENTATION (VERSIONS) Russian patent published in 2020 - IPC B29B13/06 B29B15/08 C08J5/24 

FIELD: production of composite materials.

SUBSTANCE: invention relates to drying prepregs based on thermosetting binders and organic solvents. Technical result is achieved by method of drying prepreg, which includes drying of prepreg in drying chamber with removal of released vapors. At that, heating of prepreg is performed only by direct heat transfer at contact with heated surface of at least one heated drum or direct heat transfer at contact with heated surface of at least one heated drum and, additionally, infrared radiation or gas burner. Note here that temperature of drum and/or supply line of heating heat carrier drum and, additionally, prepreg surface, adjustment of heat power supplied to prepreg are controlled. Prepreg temperature does not exceed gelatinization temperature of polymer binder.

EFFECT: technical result is simplification of design, intensification of drying process, improved quality of product, reduced power consumption, reduced weight and cost of equipment, wider field of use.

28 cl, 17 dwg