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300ml Blow Mould for Aseptic
PET Blowing Mold

300ml Blow Mould for Aseptic

This blow mould is used on high-speed rotary blowing machines for producing 300ml PET bottles. The mould size is Ø135 × 363 mm and it is mainly applied on aseptic production lines where stable bottle quality is required.

During operation, the mould shapes heated PET preforms into finished bottles with consistent dimensions. It is manufactured from imported aluminum material, which allows fast heat transfer and reliable performance during long production runs. The mould is designed to match Baiguan blow moulding machines and can be installed directly without structural modification.

    Material & Processing

    The mould is made from selected imported aluminum, commonly used in PET blow mould manufacturing due to its stable structure and good cooling efficiency.

    All cavities are machined by CNC equipment to maintain accurate dimensions and consistent wall thickness. The forming surface is finished carefully to support smooth demoulding and clear bottle appearance during production.

    300ml-pet-blow-mould-guides
    300ml-pet-blow-mould-front
    300ml-pet-blow-mould-cavity

    Basic Specifications

    Bottle volume: 300ml

    Mould size: Ø135 × 363 mm

    Machine type: High-speed rotary blow moulding machine

    Production line: Aseptic line

    Compatible brand: Baiguan

    Material: Imported aluminum alloy

    Product Characteristics

    Fast and even cooling during high-speed operation

    Stable performance for continuous production

    Smooth cavity surface, helping reduce bottle defects

    Consistent bottle shape and size

    Suitable for aseptic filling environments

    Easy to maintain in daily operation

    How the Blow Mould Works

    In production, PET preforms are heated and transferred into the mould cavity. High-pressure air expands the preform until it matches the internal shape of the mould.

    The aluminum structure allows heat to be released quickly through the cooling system. After the bottle cools down and becomes stable, it is released from the mould and transferred to the next process, such as filling or inspection.

    Typical Applications

    Bottled drinking water

    Beverage aseptic filling lines

    Dairy and liquid food packaging

    PET bottle production plants

    Blow Mould Maintenance Guidelines

    Proper maintenance helps keep the mould working smoothly and extends its service life.

    Cleaning

    Forming areas, parting lines, and base mould surfaces should be cleaned periodically using medical degreasing cotton with dedicated cleaning agents.

    New moulds do not require frequent cleaning, as they are cleaned before delivery. Excessive cleaning may reduce surface brightness.

    When needed, deep cleaning can be performed, including polishing the cavity surface to restore a mirror finish.

    Rust Protection

    Anti-rust spray or oil should be applied to the mould surface to prevent corrosion.

    Moulds should be stored in a dry and ventilated environment, avoiding direct sunlight and high temperatures.

    Lubrication

    Guide pillars, bushes, and sliding components should be lubricated regularly using suitable lubricant or food-grade grease.

    Over-lubrication should be avoided to prevent oil entering the cavity.

    Inspection & Repair

    Key components such as guide pillars, sliders, and vent holes should be checked regularly for wear or blockage.

    Minor scratches can be polished; serious damage should be repaired or parts replaced.

    Cooling Channel Care

    Softened water or dedicated cooling liquid is recommended to reduce scale buildup.

    Cooling channels should be inspected and cleaned monthly to ensure stable cooling performance.

    Storage

    After use, the mould should be cleaned and internal liquids drained.

    Mould halves should be fixed and stored on proper racks. Stretch rods should be stored vertically to prevent deformation.

    About BJY

    Foshan Baijinyi Precise Technology Co., Ltd. (BJY) was established in 2011 and focuses on PET mould manufacturing.

    We supply blow moulds and related tooling to customers in different markets, aiming to provide practical solutions with stable quality and reasonable cost. Each mould is produced with attention to material selection, machining accuracy, and long-term usability.

    More company information is available at:

    www.bjypetmold.com

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