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Extrusion Blow Molding Service | Custom Plastic Bottle & Container Manufacturing

Extrusion Blow Molding Service | Custom Plastic Bottle & Container Manufacturing Intro Paragraph:Extrusion Blow Molding is one of the most widely used plastic manufacturing processes for producing hollow plastic products. The process begins by extruding molten plastic into a tube-shaped parison, which is then inflated with compressed air inside a mold cavity to form the […]

Product Description

Extrusion Blow Molding Service | Custom Plastic Bottle & Container Manufacturing

Intro Paragraph:
Extrusion Blow Molding is one of the most widely used plastic manufacturing processes for producing hollow plastic products. The process begins by extruding molten plastic into a tube-shaped parison, which is then inflated with compressed air inside a mold cavity to form the final shape. As a professional plastic parts manufacturer, we provide high-quality custom extrusion blow molding solutions for industrial containers, automotive components, bottles, and large hollow plastic parts. Whether you need non-standard plastic molding or small-batch plastic parts customization, we deliver reliable production with consistent quality and fast lead times.

Advantages of Extrusion Blow Molding

Extrusion Blow Molding Types

Continuous Extrusion Blow Molding

This process continuously extrudes molten plastic while molds move in sequence for high-speed production. It is commonly used for bottles, household containers, and packaging products requiring large production volumes.

Typical Applications:

Intermittent Extrusion Blow Molding

In this method, the extrusion process pauses between cycles, allowing better control of larger or thicker products. It is suitable for medium-sized industrial parts and technical containers.

Typical Applications:

Accumulator Head Blow Molding

Accumulator head systems store molten plastic before rapidly releasing it into the mold, making them ideal for large hollow parts with thick walls.

Typical Applications:

Co-Extrusion Blow Molding

This process combines multiple plastic layers into one hollow product, improving barrier performance, durability, and chemical resistance.

Typical Applications:

3D Blow Molding

3D blow molding allows complex curved hollow structures that traditional straight-line extrusion cannot achieve. It is commonly used for automotive and technical applications.

Typical Applications:

Common Materials for Blow Molding

MaterialKey BenefitsTypical Applications
HDPEChemical resistance, durabilityChemical drums, bottles
LDPEFlexibility, lightweightSqueeze bottles
PPHeat resistanceIndustrial containers
PVCTransparency, rigiditySpecialty packaging
EVOHHigh gas barrierMulti-layer fuel tanks

Industry Applications

Cost Optimization & Production Efficiency

Why Choose Us

As a trusted plastic parts manufacturer, we specialize in extrusion blow molding, non-standard plastic molding, and small-batch plastic parts customization. From material selection and mold development to final production and inspection, we provide complete manufacturing solutions for hollow plastic products.

Send us your drawings or product requirements today for a free project evaluation and custom blow molding consultation.

FAQ: Extrusion Blow Molding Service

What shapes and sizes can extrusion blow molding produce?

EBM is suited to bottles from about 50 mL up to 200-liter drums, as well as non-round cross-sections, integral handles, multi-layer walls, and complex duct shapes. The parison is a continuous tube that can be shaped by the mold geometry, giving EBM more flexibility than IBM for complex container shapes.

Can extrusion blow molding produce containers with handles?

Yes. Integral handles are a strength of EBM. The handle is formed by the mold pinching a portion of the parison during the blowing cycle. Handle integration eliminates secondary assembly and produces a strong, continuous part. Handle geometry should be reviewed during DFM to confirm pinch-off quality.

How are material changes or color changes managed in EBM production?

Color changes require purging the extruder barrel and die head, which generates scrap during the transition. Purging time depends on the color change direction (light to dark is faster). We schedule color changes to minimize waste in production runs.

What is the typical mold life for EBM tooling?

Aluminum EBM molds typically last 500,000–1,000,000 cycles for standard HDPE. Steel molds last longer but cost more. We track shot counts and condition mold surfaces periodically to maintain part quality.

Can EBM parts include co-extruded barrier layers?

Yes, through co-extrusion blow molding, which produces walls with distinct material layers such as HDPE inner and outer layers with an EVOH oxygen barrier in the middle. This is common for fuel system components, agricultural chemical packaging, and food containers with extended shelf life requirements.

Related products: Injection Stretch Blow Molding Service | High-Strength PET Bottle Manufacturing, Injection Blow Molding Service | High-Precision Plastic Bottle Manufacturing, Multilayer Blow Molding Service | High-Barrier Plastic Packaging Solutions, Co-Extrusion Service | Multi-Layer Plastic Extrusion Solutions, Plastic Extrusion Services for Pipes, Profiles, and Industrial Applications.

Technical Parameters

ParameterTypical Value / Range
Process TypeContinuous / Intermittent / Accumulator Head Blow Molding
Supported MaterialsHDPE, LDPE, PP, PVC, PETG, EVOH
Product Capacity50 ml – 5000 L
Wall Thickness0.5 mm – 15 mm
Maximum Product SizeUp to 3 m
Dimensional Tolerance±0.2 mm – ±1.0 mm
Layer StructureSingle-Layer / Multi-Layer Co-Extrusion
Production Speed100 – 2000 pcs/hour
Surface FinishGlossy, Matte, Textured
MOQPrototype to mass production
Secondary ServicesTrimming, Printing, Assembly, Leak Testing
NoteSpecifications may vary depending on material type, mold structure, and product geometry.

Samples