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Injection Stretch Blow Moulding

Injection stretch blow moulding is an advanced manufacturing process designed for producing high-quality, precision containers, enhancing the traditional injection blow molding by introducing a stretch rod during the blow moulding stage.

Process Advantages:


  • Enhanced Quality: Offers superior visual and dimensional container quality over extrusion blow moulding.

  • Versatile Container Shapes: Suitable for creating both narrow and wide-mouth containers with precision and no excess material or "flash."



Stages of Production:


1. Injection Phase:

  • Molten polymer is directed into a cavity where it takes the shape of the PREFORM.

  • A mandrel forms the inner diameter while the outer shape is crafted by the cavity.

  • The PREFORM is then rotated for the next production phase.


2. Stretching and Blowing:

  • The preform is brought to the optimal temperature for stretching.

  • A stretch rod elongates the preform, which is then blown into shape with precise air pressure.


3. Discharge Phase:

  • The cooled preform is ejected, typically by automated systems, for efficiency.

  • This sequence is performed seamlessly on a rotating carousel of moulds for continuous operation.



Common Materials Utilized:


  • LDPE (Low-Density Polyethylene)

  • LLDPE (Linear Low-Density Polyethylene)

  • PP (Polypropylene)

  • PET (Polyethylene Terephthalate)

  • PVC (Polyvinyl Chloride)

  • HDPE (High-Density Polyethylene)



Diverse Product Output:


  • Consumer Goods: Includes a variety of bottle types for carbonated drinks, cooking oils, health products, and more.

  • Specialised Containers: Agrochemical containers and personal care product packaging.


Injection stretch blow moulding is pivotal for industries demanding high-precision and high-quality plastic containers, offering significant improvements in product strength and clarity.

Injection Stretch Blow Moulding

Related Brands

Billion PET
Billion PET
Braskem
Braskem
Equipolymers
Equipolymers
JBF
JBF
LG Chemicals
LG Chemicals
Sabic
Sabic
Selenis
Selenis

Related Markets

Rigid Packaging
Consumer Goods
Flexible Packaging

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