The invention discloses a large high-pressure seamless rubber
airbag and a production process thereof, relating to a rubber product and a production process thereof. The large high-pressure seamless rubber
airbag comprises the following compositions: EPDM (
ethylene-propylene-
diene monomer) externally-covered rubbers with excellent
weather resistance, at least four (even number) skeleton
layers, a middle
adhesive layer and an inner
adhesive layer, wherein each skeleton layer is composed of continuous high-strength tyre cords which are mutually crossed with an angle of 90 degrees and formed into an angle of 46-56 degrees, the middle
adhesive layer is composed of
chloroprene rubbers and natural synthetic rubbers, and the inner adhesive layer is made of butyl rubbers with excellent
air tightness. The production process of the large high-pressure seamless rubber
airbag comprises the following steps: (1) sequentially carrying out plastication, coordination, mixing and batching on raw rubbers; (2) carrying out impregnation and rubberizing on the high-strength tyre cords; (3) carrying out rotating preforming on the obtained object by using a roller; weaving open-end fibers, so that the joints of the fibers are arranged in a continuous shape, and sticking films on the fibers; (4) carrying out integral molding on the obtained object once; (5) carrying out integral
vulcanization on the obtained object; and (6) carrying out reinforced heat
vulcanization on edges and corners of the obtained product. The production process disclosed by the invention is simple and convenient in operation; the
service time of the rubber airbag is more than 50 years, and the environmental
sanitation index of the rubber airbag exceeds four orders of magnitude of the
international standard requirement. The large high-pressure seamless rubber airbag and production process disclosed by the invention are used for the hoisting of pneumatic-shield gate dams and heavy objects.