What Is an Automatic Extrusion Blow Molding Machine?
An automatic extrusion blow molding machine manufactures hollow plastic parts by the sequential steps of extruding a molten parison, closing the mold, blowing with air, cooling and demolding—in a continuous and repeatable condition in an automated cycle:
Extrude parison → Close mold → Blow air → Cool → Demold.
The solution is commonly found for bottles, jerry-cans, drums, industrial packages and certain automotive blow-molded parts. With the proper head type, station layout and automation in place, manufacturers will be able to achieve increased throughput, less scrap and stable product quality over extended production runs.
Products
Maximum product capacity: 2 L
Maximum output (HDPE): 60 kg/h
Equipment size: 3.0 x 2.0 x 1.85 m
Maximum product capacity: 5 L
Maximum output (HDPE): 88 kg/h
Equipment size: 3.6 x 2.1 x 2.1 m
Maximum product capacity: 12 L (or 1.5L x 2 cavities)
Maximum output (HDPE): 169 kg/h
Equipment size: 3.6 x 3.6 x 2.6 m
Maximum product capacity: 30 L
Maximum output (HDPE): 124 kg/h
Equipment size: 4.3 x 2.4 x 3.8 m
Maximum product capacity: 60 L
Maximum output (HDPE): 162 kg/h
Equipment size: 5.5 x 2.6 x 4.2 m
Maximum product capacity: 120 L
maximum output (HDPE): 210 kg/h
Equipment size: 5.3 x 2.5 x 4.2 m
Maximum product capacity: 230 L
Maximum output (HDPE): 325 kg/h
Equipment size: 9.3 x 4.5 x 6.3 m
Maximum product capacity: 500 L
Maximum output (HDPE): 383 kg/h
Equipment size: 9.2 x 4.1 x 6.5 m
Automatic Extrusion Blow Molding Machine for Wall Thickness Consistency, Leak-Resistance, and Repeatable Cycles
For automatic extrusion blow molding machine users, “automatic” has to signify more than just fewer operators—it should equal consistent part quality. A well-balanced extrusion and clamping mechanism can provide stable parison formation and even wall thickness distribution to reduce problems such as weak corners, unstable weight and defective sealing areas. Control wall thickness and the cycle, and you will have less leakage, lower scrap rates, predictable production per shift and a smoother ramp-up when beginning new molds or materials.
Automatic Extrusion Blow Molding Machine Configuration: Stations, Head Type, and Downstream Automation
The best automatic extrusion blow molding machine is the line that matches your part size, and planned production rate. Automation possibilities: extrusion blow molding systems can be designed in a way which you prefer: by station layout (single or double-station), by head type (continuous or accumulator for bigger / changeable parison needs) and tooling/cavity design to best suit the output, flexibility, part quality. In order to stabilise production flow and eliminate handling, downstream automation such as automatic take-out, deflashing/trimming, leak testing and conveyor/packing support can be added, resulting in the machine becoming a production line.
The automatic extrusion blow molding machine can pruduce bottles, jerry cans, drums, chemical containers, tanks of large size and automotive parts like ducts or reservoirs—depending on the machine.
Automatic extrusion blow molding machine can make the most common materials are HDPE and PP. Your choice of material will depend on the chemical resistance, stiffness, drop performance and the type of end product required.
Single-station: better flexibility (larger parts), easier mold handling, more commonly used with larger products.
Double-station: faster for small and medium parts when output is the key issue.
Choice may be part weight, cavity design, cycle time and output requirement.
An accumulator head holds molten material and releases it with a controlled shot: Due to the accumulator being so large, it is typically beneficial in larger parts/ thicker parisons or applications in which more stable parison control is necessary.
Usual choices would be automatic take-out, trimming/deflashing, leak testing, conveyors and packing help. Which would be the best set up depends on your QA needs and labor plan.
Factors include melt stability, parison control method, mold design, clamping stability, cooling and process conditions (temperatures, timing and air pressure). With good mechanical stability and process control, variability is minimal.
We need photos of your product, capacity, weight, and material. We also need the machine’s hourly production capacity. We provide complete equipment sets for your convenience. Our engineers have over ten years of experience in the plastics manufacturing industry.
