NOVELTY - Manufacture of antiflaming acid filter on battery safety valve comprises putting pore agent to oven and baking; melting high density polyethylene, polypropylene and polyethylene octylene co-elastomer, adding flame retardant, flame retardant synergistic agent, whitening agent and anti-dropping agent, plasticizing, adding pore agent, squeezing, forming sheet, folding sheet and squeezing; squeezing and obtaining acid filter; putting acid filter in water tank, melting pore agent, and forming small holes in surface of acid filter; and dehydrating acid filter, forming filter on punch, and baking.    USE - Method for manufacture of antiflaming acid filter on battery safety valve (claimed).    ADVANTAGE - The method can increase safety performance of acid filter, with integrated antiflaming, anti-exploding, separating, sealing and filtering effects.    DETAILED DESCRIPTION - Manufacture of antiflaming acid filter on battery safety valve comprises:    (A) putting pore agent to oven at 150-160 degrees C and baking until the temperature of pore agent reaches 150-160 degrees C;    (B) melting high density polyethylene, polypropylene and polyethylene octylene co-elastomer at 165-180 degrees C, adding flame retardant, flame retardant synergistic agent, whitening agent and anti-dropping agent, continuously plasticizing for 3-5 minutes, adding pore agent at 150-160 degrees C, squeezing, forming sheet, folding sheet and squeezing, repeating steps 5-6 times and uniformly mixing each component;    (C) adjusting distance between double rollers, squeezing squeezed sheet body, and obtaining acid filter;    (D) putting acid filter in water tank at 20-25 degrees C for 35-45 hours, completely melting pore agent, and forming small holes in surface of acid filter; and    (E) dehydrating acid filter, forming antiflaming acid filter on punch, and baking at 50-60 degrees C for 2-3 hours.    The materials comprise (pts.wt.) high density polyethylene (8-10), polypropylene (0.4-1.2) and polyethylene octylene co-elastomer (3.5-7.5); flame retardant (4.5-9.5), flame retardant synergistic agent (1.5-3.5), whitening agent (0.3-0.4) and anti-dropping agent (67.5-81.5).