Abstract: A pair of rollers (2), constituting the seat and the traction means for the formwork (3) to be reinforced, are established on a bench (1). A pair of upper pressure rollers (12) act, at the same time, on the formwork. On the same bench (1) there are also placed, laterally with respect to the formwork (3), a pair of longitudinal guides (15) for the movement, in parallel to the formwork (3) of a carriage (14) wearing the fiberglass mesh delivering reel (13), said reel (13) being furthermore mounted on the carriage (14) with the possibility to rotate around the vertical axis, in order to vary the orientation of the fiberglass mesh with respect to the formwork (3).

Abstract: A pair of rollers (2), constituting the seat and the traction means for the formwork (3) to be reinforced, are established on a bench (1). A pair of upper pressure rollers (12) act, at the same time, on the formwork. On the same bench (1) there are also placed, laterally with respect to the formwork (3), a pair of longitudinal guides (15) for the movement, in parallel to the formwork (3) of a carriage (14) wearing the fiberglass mesh delivering reel (13), said reel (13) being furthermore mounted on the carriage (14) with the possibility to rotate around the vertical axis, in order to vary the orientation of the fiberglass mesh with respect to the formwork (3).

Abstract: It is applicable to a formwork made from a tubular body in plasticised wood, rigid plastic or the like, conveniently stabilised by means of an outer envelope made of a glass fiber mesh rolled up helicoidally, with or without the intercalation of a second tubular body made of expanded polystyrene; the improvements of the invention consist in obtaining an inner tubular body in plastic or wood made of a single plate (7) which width coincides with the perimeter of the formwork to be obtained, having said plate (7) a continuous internal side (8) and with an external side (10) wherein a plurality of longitudinal cuts (9) are established, evenly distributed, affecting mainly the thickness of said plate, defining weakened zones (11) allowing an easy deformation of said plate (7), which is initially flat, in order to convert it into a cylindrical and tubular element.

Abstract: A formwork is structured from a tubular body or core made of a plurality of parts, attached to each other by an adhesive through their connecting edges. The tubular core is internally coated with a sheet made of plastic, or rigid plates made of wood plasticized on the internal side or made of rigid plastic, attached to each other on their inner side with the help of an adhesive constituting an impervious barrier. Externally the formwork has a reticulated support having a fiber glass mesh rolled up helicoidally on the tubular core and fixed to the core by an adhesive in such a way that the mesh ensures the proper mechanical rigidity of the formwork. Optionally, a self-adhesive sealing band can be placed on the enveloping mesh as a decorative element and as a formwork advertising support.