VESSEL OF COMPOSITE MATERIAL Russian patent published in 1995 - IPC

FIELD: laminar products or materials. SUBSTANCE: vessel of composite material has a casing in the form of a supporting shell of rotation with a pole opening, flange wound in it, and a detachable cover. The casing rust protection is made as a pack coating consisting of layers of film chemically resistant thermosoftening plastic tapes formed by winding along geodetic lines and reinforcing fabric of dry fibrous filler positioned inside the thermosoftening plastic at a preset distance in the direction of the supporting shell with a space of arrangement selected within 4/7 to 3/5 of the width of the thermosoftening plastic tape, sealing layer of rubber mixture and woven material of polycaproamide fibre binding together the thermosoftening plastic and layer of rubber mixture. The pack coating is bound with the supporting shell on the side of the sealing layer of rubber mixture by an adhesive composition. Made in the duct of the detachable cover around its edges are two projections that are symmetrical relative to its center line. The flexible sealing ring placed in the groove has the respective stepped slot, whose two peripheral steps equal the size of the groove projection, and two central steps form in the interprojection space of the groove an additional space, whose volume exceeds the total volume of the annular projections. EFFECT: enhanced rust protection. 4 cl, 5 dwg