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Injection Blow Moulding

Injection blow moulding stands as a preeminent manufacturing process for creating hollow products in bulk, with a focus on containers like bottles and jars known for their precise and high-quality finish.

Overview of Injection Blow Moulding:


  • High-Volume Production: Optimised for manufacturing large quantities of hollow objects.

  • Quality Finish: Yields bottles and containers with exceptional visual and dimensional precision, out-performing extrusion blow molding.

  • Versatile Container Design: Suitable for producing both narrow and wide-mouth containers, delivering a finished product without excess material, also known as flash.



Step-by-Step Process:


1. Injection Stage:

  • Molten polymer is injected into a cavity through a hot runner block.

  • PREFORM is shaped using a mandrel for the interior and the cavity for the exterior dimensions.

  • The set-up includes a timed process where molds and core pins separate, rotating the preform for further processing.


2. Blowing Stage:

  • The preform is heated to the right temperature and placed in the BLOWMOULD area.

  • Moulds close around the preform, and it is inflated using precise air pressure levels to form the final shape.


3. Discharge Stage:

  • After cooling, the moulds open, and the preform is automatically ejected, often using robotics for efficiency.

  • The entire process operates concurrently on a revolving carousel of molds to maximize production.



Commonly Used Materials:


  • Variety of Polymers: Includes Low Density Polyethylene (LDPE and LLDPE), Polypropylene (PP), Polyethylene Terephthalate (PET), Polyvinyl Chloride (PVC), and High Density Polyethylene (HDPE).



Typical End Products:


  • Plastic Bottles: The primary output of this process, serving a vast array of packaging needs.


Injection blow moulding is crucial in the packaging industry, producing bottles that meet stringent quality standards while providing the flexibility to use a range of thermoplastic materials.

Injection Blow Moulding

Related Brands

Braskem
Braskem
Enplast
Enplast
Envalior
Envalior
Equipolymers
Equipolymers
Repsol
Repsol
Selenis
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Trinseo
Trinseo
Westlake Chemical
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