Produce processes of plastic injection vial

Today i will introduce three produce processes of plastic injeciton vial, such as Extrusion blow molding,Injection blow molding and Injection stretch blow molding process. The three kinds of produce processes are the major processes of plastic injection bottles manufacturer.They are widely used in the world.

Then i will detailedly introduce these processes.

First,i will introduce the extrusion blow molding,EBM is short for extrusion blow molding.three fourths of the blow molding products are produced by EBM.In extrusion blow molding, plastic is melted and extruded into a hollow tube (a parison). This parison is then captured by closing it into a cooled metal mold. Air is then blown into the parison, inflating it into the shape of the hollow bottle, container, or part. After the plastic has cooled sufficiently, the mold is opened and the part is ejected.The EBM process is used widely and work range from small bottle to big bottles.The EBM also can be used to manufacture complex shapes,and this process's cost is lower than other processes,so it is suitable for factory.

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Second,i will introduce the injection blow molding,IBM is short for injection blow molding.The process is divided in to three areas:

injection,the screw extruder injects the melted plastic material into a split steel mold cavity,the mold produces a preform parison.

blowing,The preform mould opens and the core rod is rotated and clamped into the hollow, chilled blow mould. The core rod opens and allows compressed air into the preform, which inflates it to the finished article shape.

eject,transfer the final plastic bottle to the desired location and eject it from the machine.

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Finally,i will introduce the injection stretch blow molding process,ISB is short for the injection stretch blow molding process.The PET material bottle is generally produced by this process.This has two main different methods, namely Single-stage and two-stage process.

In the two-stage process,the preform manufacture and bottle blowing are performed in two machine.the process of two-stage:

the plastic is first molded into a "preform" using the injection molding process

These preforms are packaged, and fed later (after cooling) into a reheat stretch blow molding machine.

the preforms are heated

then blown using high-pressure air into bottles using metal blow molds,while simultaneously being stretched.

After a set time for cooling the moulds open and the preform is removed via drop chutes

In the single-stage process both preform manufacture and bottle blowing are performed in the same machine.the process of two-stage:

the plastic is first molded into a "preform" using the injection molding process

then blown using high-pressure air into bottles using metal blow molds,while simultaneously being stretched.

After a set time for cooling the moulds open and the preform is removed via drop chutes