|   The plastic injection 
                                temperature is usually high. Injecting with air 
                                will burn the plastic since the oxygen in the 
                                air is flammable, which would be more obvious 
                                for transparent plastic parts. Therefore, injection 
                                molding machine uses nitrogen since it is not 
                                flammable. 
                              Accumulator assist injection molding machine 
                                must be installed with a set of gas assist injection 
                                equipment, including: 
                              
                                - Nitrogen producing machine or nitrogen bottles 
                                  (grade nitrogen purity to 99%).
 
                                - High-pressure nitrogen compressor and for 
                                  a little quantity production can use pressurized 
                                  cylinder mode.
 
                                - High-pressure gas cylinders (for bigger quantity 
                                  production use).
 
                                - Gas assisted controller (it have single loop 
                                  circuit and multi loop circuit two type).
 
                               
                              Accumulator assist injection molding machine 
                                is specialized in avoiding sink mark, warping, 
                                flow line mark, reduce product weight (up to 50% 
                                depending on product condition), product cost, 
                                molding cycling time (up to 30% depending on product 
                                condition), increasing production efficiency, 
                                and internal force. 
                              Gas-assisted injection molding flow chart: 
                                
                               
                                The above diagram explains that the nitrogen can 
                                be injected when either the injection complete 
                                or incomplete. The machine uses gas assist injection 
                                controller unit to control nitrogen pressure and 
                                time to achieve the pressure holding performance, 
                                then open the mold to take out the product after 
                                gas went out. 
                              Accumulator assist injection molding machine 
                                has been used to make television frame, car handle, 
                                steering wheel, and home products like chair, 
                                table, handle, clothe hanger..., etc.   |