Plastic processing technology gas-assisted injection molding technology

Gas-assisted injection molding is introduced into the high-pressure gas through the parts of the thick-walled parts, injection molded parts internally generated in the hollow section, completely filling process, the gas holding pressure to achieve, to eliminate traces of a new product shrink plastic molding technology. Conventional injection molding process can not be formed thick and thin together, and the workpiece residual stress, easy to warpage, sink marks when surface. Development of new gas-assisted technology inside hollowed out through the thick, succeeded in producing thick-walled, side-wall products, and products look excellent surface properties, internal stress is low. Lightweight, high strength. Has successfully developed gas-assisted design, including product mix and mold casting system, inlet gas distribution channel design techniques, gas-assisted injection molding process design, gas-assisted injection molding process design, gas-assisted injection molding process of computer simulation technology, gas-assisted injection molding products defect diagnosis and rule out the technology, gas-assisted process Compound technology.http://www.prmindustry.com/Abstract...Articles section TV, appliance, automotive, furniture, daily necessities, office supplies, toys and other plastic molding opens up new application areas, gas-assist injection molding technology is particularly suitable for pipe-like products, thick-walled, side wall (composed of sections of different thickness parts) and large flat structural components.Gas-assist devices: including the occurrence and nitrogen pressurization system, pressure control unit and intake components. Investment of about 40 - 200 million (depending on size and grade of the equipment requirements vary). Gas-assisted injection molding process can be completely and traditional processes (injection molding machine) interface.Reduce the product weight (material saving) can be 40% higher, shorten the molding cycle (saving up to 30%, eliminating sink marks and improve yield; lower injection pressures up to 60%, small-tonnage injection molding machines can produce large parts, reduce operating costs ; extend die life, lower manufacturing costs, but also the use of such thick roots, thick bars, plate and other more stable structure, increasing the mold design freedom, usually 6-18 months to recover the cost of additional equipment (specifically, economic With parts and proposed).


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           Peter Huang