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Blow Molding Manufacturing Services

Blow molding is a manufacturing process in which a molten thermoplastic tube (parison or preform) is formed, enclosed within a mold, and inflated using compressed air to take the shape of the cavity. Once cooled, the part is ejected as a finished hollow product.

We support multiple blow molding processes, including:

  • Extrusion Blow Molding (EBM): used to produce hollow plastic parts by extruding a molten plastic tube (parison), enclosing it in a mold, and inflating it with air to form products such as bottles, tanks, ducts, reservoirs, and other custom hollow components
  • Injection Stretch Blow Molding (ISBM): used to produce high-clarity, lightweight plastic containers by injection molding a preform, reheating it, and stretching and blowing it into a mold to create strong, precise hollow products such as beverage bottles, medical containers, and packaging components
  • Injection Blow Molding (IBM): used to produce precise hollow plastic parts by injection molding a preform onto a core rod and then blowing it into a mold cavity, creating high-accuracy containers such as medical bottles, pharmaceutical containers, and small packaging products.

Capabilities

  • Highly-Reliable, high-quality blow molding for complex hollow plastic components ranging from 1 mL to 7-gallon containers across medical, household, automotive, packaging, and industrial applications
  • Experienced engineering team focuses on design for manufacturability (DFM) to optimize performance, reduce costs, and ensure efficient production
  • Automated EBM systems equipped with 200-point parison programming for precise wall thickness control and improved part consistency
  • Multi-component and multi-layer blow molded parts for enhanced barrier performance, strength, and durability, including overmolding and insert molding integration
  • Material selection support
  • Onshore and offshore mold making capabilities for flexible tooling solutions and cost optimization
  • Environmentally controlled, fully HVAC-regulated production facility for improved process stability and quality assurance
  • Secondary services for blow molded products including trimming and deflashing, leak testing and pressure verification, heat sealing, in-mold decorating (IMD/IML where applicable), pad printing, label application, adhesive bonding, assembly, custom packaging, filling & sealing, heat insertion/heat staking, heat transfer decoration, and ultrasonic welding for complete finished-part solutions
  • On-time delivery with JIT (Kanban) programs

Other Capabilities

Consistent Wall Thickness

Processes designed to ensure uniform material distribution and structural integrity.

Lightweight, Durable Parts

Ideal for creating strong yet lightweight hollow components.

High-Volume Production

Efficient manufacturing for large production runs with consistent quality.

Custom Design Flexibility

Support for a wide range of shapes, sizes, and application requirements.

Key Materials for Blow Molding

  • Polyethylene (PE – HDPE/LDPE): Ideal for flexible, high-wear applications, such as caps, containers, and household items.
  • Polypropylene (PP): A lightweight, cost-effective, and chemically resistant material often used in packaging and consumer products.
  • Polyethylene terephthalate (PET): A strong durable, lightweight, recyclable polyester plastic often used for packaging food, beverages, and consumer products.
  • Recycled Polyethylene Terephthalate (RPET): A durable, lightweight, and eco-friendly alternative. Since it is sustainable plastic material that is formed by recycled, cleaned, and reprocessed PET plastics.
  • Polycarbonate (PC): Used when high impact strength, transparency, and superior insulation properties are required.
  • Copolyester (Tritan): A high performance copolyester that is BPA free material making it a safer option for consumer goods. Designed for extreme durability and clarity for bottles, containers, etc.
  • Nylon (PA6, PA66, PA12): High tensile strength, abrasion resistance, and good chemical resistance; suitable for blow molded specialty components requiring improved mechanical performance and durability.
  • K-Resin (SBC – Styrene Butadiene Copolymer): Clear, rigid, excellent transparency, impact resistance, and processability; commonly used for consumer packaging, cosmetic containers, and display-grade blow molded products requiring high clarity and stiffness.

Common Blow Molding Applications

  • Medical & Healthcare: Medical fluid bottles, specimen containers, IV and diagnostic solution packaging, disinfectant bottles, pharmaceutical containers, and other sterile or controlled-use hollow components requiring cleanliness, chemical resistance, and consistency
  • Aerospace: Lightweight fluid containers, ducting components, protective housings, and non-structural hollow parts requiring performance materials and weight reduction
  • Automotive & EV: Fluid reservoirs (coolant, brake fluid, washer fluid), air ducts, intake components, expansion tanks, and protective covers requiring chemical resistance, vibration durability, and lightweight performance
  • Household & Consumer Products: Cleaning product bottles, detergent containers, spray bottles, storage jugs, refillable dispensers, and utility containers designed for durability, leak resistance, and everyday usability
  • Toys & Pet Products: Plastic toy components, hollow toy shells, pet shampoo bottles, pet care dispensers, feeding containers, and durable consumer pet product packaging designed for safety and impact resistance
  • Packaging: Food and beverage containers, personal care packaging, cosmetic bottles, industrial chemical packaging, and custom hollow containers requiring consistent wall thickness, clarity, and durability
  • Sustainability & Renewable Applications: Refillable and reusable packaging systems, recyclable resin-based containers, lightweight packaging designed to reduce material usage, and containers supporting circular economy and waste reduction initiatives

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