Selection Guide · Extrusion Blow Molding
Start from your container, not from a model number. This guide explains the extrusion methods and drive configurations described in Waley Machinery's catalogue, the six details to confirm before requesting a quotation, and where to find the full specifications on the official site.
This page is an independent selection aid. For current specifications, see the manufacturer's official catalogue.
Extrusion blow molding makes hollow plastic containers in three steps:
Accumulator and continuous extrusion describe how the parison is formed. All-electric servo describes the machine's drive system, rather than a separate extrusion method. Consider the extrusion method and drive configuration alongside your container's size, wall structure, and end use.
For large hollow containers. The extruder plasticizes continuously while melt accumulates in the accumulator cylinder, then is pushed out in a single shot for uniform wall thickness.
Typical products: industrial drums, IBC tanks, automotive fuel tanks.
For small and medium containers, extruded continuously. Multilayer co-extrusion options build a container wall from more than one layer — for example an oxygen-barrier layer, a recycled-material core layer, or a color layer.
Typical products: pesticide bottles, food barrier bottles, cosmetics packaging.
A drive configuration using fully electric servo drive. Confirm the extrusion method and machine configuration for your application with the manufacturer.
Typical products: cosmetics and pharmaceutical bottles.
Waley also lists auxiliary equipment for the full line: grinders, mixers, chillers, mold temperature controllers, dryers, loaders, leak testers, and packaging equipment.
See all machines and specifications in the official catalogue
Have these six answers ready before requesting a quotation. They determine which machine fits and what the manufacturer needs to quote.
Which resin or resins will the container use? The material determines the extruder and die-head configuration.
What is the container's volume (capacity)? Give the figure in the units you use, for example milliliters or liters.
What are the container's dimensions, shape, and neck and handle design? Size and shape determine the machine configuration.
How many containers per shift or per day do you need? Output determines the number of cavities and the level of automation.
Is the container wall single-layer or multilayer? If multilayer, what is each layer for — barrier, recycled content, or color? This determines whether co-extrusion is needed.
What voltage and frequency are available at your plant? The manufacturer needs this for electrical planning.
Containers made on extrusion blow molding machines serve these industries, per the manufacturer's published application list:
Extrusion blow molding makes hollow plastic containers. Plastic resin is melted in an extruder and shaped into a hollow tube called a parison. The parison is placed in a mold, inflated with air, cooled, and ejected as a finished container such as a bottle, drum, or tank.
In accumulator blow molding, the extruder plasticizes continuously while melt accumulates in an accumulator cylinder, then is pushed out in a single shot. It suits large hollow containers. In continuous extrusion, the parison is extruded continuously. It suits small and medium containers.
In multilayer co-extrusion, several extruders feed one co-extrusion die head, so the container wall is built from more than one layer. Typical layer functions include an oxygen-barrier layer, a recycled-material core layer, or a color layer. The exact layer structure depends on the product's requirements.
Prepare six details: the material, the container volume, the container size and shape, the target output, whether the wall is single-layer or multilayer, and the power supply available at your plant. With these details, the manufacturer can recommend a machine and a quotation basis.
See the manufacturer's official catalogue on waley.cn, which lists the machines and their specifications: Machines Catalogue 2026
Contact Shantou Weili Plastic Machinery Factory Co., Ltd. by telephone at +86 138-2969-2592 or by email at sales@waley.cn. The company is based at No. 290, Daxue Road, Jinping District, Shantou, Guangdong 515000, China. See also the official English site.
Consider the extrusion methods and drive options above for your container, work through the six-item checklist, then confirm specifications and pricing with the manufacturer.
Contact details as published by the manufacturer. Tel: +86 138-2969-2592 · Email: sales@waley.cn