PULTRUSION UNIT FOR MANUFACTURING RODS FROM POLYMER COMPOSITE MATERIALS Russian patent published in 2023 - IPC B29C33/62 B29C70/52 

FIELD: polymer composite materials.

SUBSTANCE: distinctive feature of the pultrusion unit for manufacturing rods from polymer composite materials is the impregnation and pressing unit consisting of two successive sections, the first of which is made with an annular tapering channel of variable cross section, formed by a section of the inner surface in the form of a truncated cone and the outer surface of the cone inserted inside the impregnation and pressing unit from the supply side of the binder-impregnated roving. Moreover, in front of the base of the inner cone there is an annular spreading comb for uniform distribution of the roving around the circumference of the manufactured product. The geometric characteristics of the generatrix of the inner cone and the inner cylindrical surface are selected for uniform decrease in the cross-sectional area of the annular tapering channel, while the second section of the impregnation and pressing unit has a conical inner surface.

EFFECT: increased strength of the target product.

1 cl, 3 dwg