The full form of ISBM is “Injection Stretch Blow Molding.” The procedure of ISBM is used to create polymer-based primarily hollow and rotationally symmetric objects. A preform is initially created using an injection molding procedure in this tiered process.
These are having two main different methods, namely Single-stage and two-stage process.
Single-stage process is again broken down into 3-station or 4-station machines in the one-stage injection stretch blow molding (ISBM) process, the plastic is first molded into a “preform” using the injection molding process. These preforms are produced with the necks of the bottles, including threads (the “finish”) on one end.
The full form of ISBM is “Injection Stretch Blow Molding.” The procedure of ISBM is used to create polymer-based primarily hollow and rotationally symmetric objects. A preform is initially created using an injection molding procedure in this tiered process.
injection Stretch Blow Molding (ISBM) involves molding the plastic into a ‘preform’ using the Injection Molding procedure. When these preforms are produced, they include the necks of the bottles as well as threads, known as the finish. These preforms are then cooled and put through the Blow Molding process.
The costlier 3-station process avoids the reheat stage and utilizes latent heat in the preform, saving on energy costs and using 25% less tooling than the traditional 4-station technique of injection, reheat, stretch blow, and ejection.
Two-Stage Process
The plastic is initially formed into a “preform” using the injection molding technique in the two-stage injection stretch blow molding procedure. These preforms are made using the bottlenecks, which have threads on one end.
These preforms are packaged, and fed later (after cooling) into a reheat stretch blow molding machine. In the ISB process, the preforms are heated (typically using infrared heaters) above their glass transition temperature, then blown using high-pressure air into bottles using metal blow molds. The preform is always stretched with a core rod as part of the process.
These preforms are bundled before being put into a reheat stretch blow molding machine after cooling. In the ISBM process, the preforms are generally heated with infrared heaters above their glass transition temperature before being blown into metal blow mold bottles with high-pressure air. The method always includes stretching the preform using a stretch rod.
