{"id":1022,"date":"2026-09-09T08:52:30","date_gmt":"2026-09-09T08:52:30","guid":{"rendered":"https:\/\/isbmmolding.com\/?p=1022"},"modified":"2026-09-09T08:52:30","modified_gmt":"2026-09-09T08:52:30","slug":"what-does-an-injection-molding-machine-do","status":"publish","type":"post","link":"https:\/\/isbmmolding.com\/fa\/what-does-an-injection-molding-machine-do\/","title":{"rendered":"\u062f\u0633\u062a\u06af\u0627\u0647 \u0642\u0627\u0644\u0628 \u06af\u06cc\u0631\u06cc \u062a\u0632\u0631\u06cc\u0642\u06cc \u0686\u0647 \u06a9\u0627\u0631\u06cc \u0627\u0646\u062c\u0627\u0645 \u0645\u06cc \u062f\u0647\u062f\u061f"},"content":{"rendered":"

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An injection moulding machine converts raw thermoplastic resin pellets into finished plastic parts or containers through a controlled cycle of melting, injecting, cooling, and ejecting. The specific function \u2014 and the type of finished part produced \u2014 depends entirely on the machine type. Standard injection moulding machines produce solid plastic components. One-step injection stretch blow moulding (ISBM) machines produce finished hollow containers, going from resin pellets to finished bottles in a single integrated cycle. Understanding what each machine type does, and what it cannot do, is essential before specifying plastics manufacturing equipment.<\/p>\n

What a Standard Injection Moulding Machine Does<\/h2>\n

A standard injection moulding machine performs four sequential operations in each production cycle. First, plastic resin pellets are fed from a hopper into a heated barrel where a rotating screw melts and conveys them forward, building up a measured shot of molten plastic. Second, the screw advances axially, injecting the molten plastic under high pressure (800\u20132,000 bar) into a closed mould cavity that defines the part\u2019s geometry. Third, the plastic cools and solidifies against the mould walls while the screw rotates to prepare the next shot. Fourth, the mould opens and the finished solid part is ejected by ejector pins.<\/p>\n

This cycle produces solid plastic parts: automotive components, consumer electronics housings, medical device parts, caps and closures, gears, and preforms for downstream blow moulding. The mould defines every surface of the finished part completely \u2014 there is no mechanism to create enclosed internal volume, so standard injection moulding cannot produce finished hollow bottles.<\/p>\n

\"One-step<\/p>\n

4-station one-step ISBM machine process \u2014 all four stations (injection, conditioning, stretch-blow, ejection) operate simultaneously on different preforms within each machine cycle.<\/p>\n

What a One-Step ISBM Machine Does<\/h2>\n

A one-step ISBM machine does something fundamentally different from a standard injection moulding machine: it converts raw resin pellets into finished hollow bottles through an integrated sequence of four steps, all occurring within a single machine on a rotating table. At any given moment, four different preforms are at four different stages of the process simultaneously \u2014 one being injected, one being conditioned, one being stretched and blown, and one being ejected as a finished bottle.<\/p>\n

The four steps in a one-step ISBM cycle are:<\/p>\n