Application of nitrogen generator in gas-assisted injection molding

Gas-assisted injection molding is an innovation of traditional injection molding technology. This advanced technology is to inject inert gas (usually nitrogen) directly into the mold cavity through a segmented pressure control system to plasticize, so that the inside of the plastic part expands and becomes hollow, but still keeps the surface shape of the product intact.

Gas-assisted injection molding technology is widely used in the injection molding industry and can be applied to various plastic products, such as TV or audio shells, various types of plastic boxes and toys, automotive plastic products, cabinets, household appliances and daily necessities, etc.

Compared with traditional injection molding technology, gas-assisted injection molding technology has the following advantages: It can save up to 50% of plastic raw materials; shorten the product production cycle time; reduce the clamping pressure of the injection molding machine; reduce the pressure in the mold cavity, reduce the loss of the mold and increase the working life of the mold, thereby reducing the investment cost of the mold; reduce the internal stress of the product and solve the problem of shrinkage marks on the surface of the product; simplify the cumbersome design of the product; reduce the power consumption of the injection molding machine, increase the working life of the injection molding machine, and reduce production costs.

Bottled nitrogen and liquid nitrogen on the market are relatively expensive and time-consuming, so using a PSA Nitrogen Generator is a better choice. The PSA nitrogen generator uses inexhaustible air as raw material, carbon molecular sieve as adsorbent, and uses the principle of pressure swing adsorption to separate nitrogen and oxygen by utilizing the selective adsorption of oxygen and nitrogen by carbon molecular sieve. Compared with traditional nitrogen production methods, it has the characteristics of simple process flow, high degree of automation, fast gas production (15 to 30 minutes), low energy consumption, online detection of nitrogen purity, convenient operation and maintenance, low operating cost, and strong device adaptability. The PSA nitrogen generator is a one-time investment for long-term use of gas, one-button start-up, and unmanned operation, which can save labor and cost.