Plastic Sea Ball Extrusion Blow Molding Machine: Efficiency and
Quality in Toy Manufacturing
Plastic sea balls, beloved by children worldwide for their safety
and elasticity, are a staple in playgrounds, kindergartens, and
home play areas. The unsung hero behind their mass production is
the plastic sea ball extrusion blow molding machine—a specialized
device that combines precision engineering with automated workflows
to meet the growing market demand. For manufacturers, this
equipment is not just a production tool but a guarantee of
consistent quality and competitive efficiency.
At its core, the machine operates through a streamlined four-stage
process that ensures reliability. First, food-grade polyethylene
(PE) or polypropylene (PP) particles are fed into an extruder,
where a rotating screw and controlled heating (160-220°C, depending
on the material) melt them into a uniform, fluid state. This stage
is critical: overheating degrades plastic toughness, while
insufficient heat causes uneven melting and product flaws. Next,
the molten plastic is extruded through a die head to form a hollow
tubular parison. The die head’s spiral flow channel design ensures
the parison has consistent wall thickness—typically 0.3-0.5mm for
standard 5cm sea balls—laying the foundation for uniform
elasticity.
The third stage involves mold clamping and blowing: two mold halves
(shaped like sea balls) close tightly around the parison, forming a
sealed cavity. High-pressure air (0.3-0.6MPa) is then injected,
forcing the plastic to conform perfectly to the mold’s inner
surface. Blowing time is adjusted by size—2-3 seconds for small
balls, 4-5 seconds for larger ones—to ensure full expansion.
Finally, a water-cooling system rapidly solidifies the plastic in
5-8 seconds, and the mold opens to release the finished product.
This automated cycle minimizes human error and maximizes output.
Key components define the machine’s performance. The extruder’s
38CrMoAl alloy steel screw, treated for wear resistance, ensures
stable plasticization. The PLC control system, with an intuitive
touchscreen, lets operators adjust temperature, air pressure, and
speed with ±0.1% precision, while fault alarms reduce downtime.
Multi-cavity molds (4-8 cavities) further boost efficiency,
enabling a single machine to produce 15,000-20,000 sea balls
daily—50% more than semi-automatic alternatives.
Beyond efficiency, the machine prioritizes safety and quality. It
uses non-toxic raw materials and produces burr-free,
smooth-surfaced sea balls that meet EN 71 and ASTM F963 standards.
Optional visual inspection systems can automatically reject
defective products, keeping qualification rates above 99%. As the
toy industry emphasizes safety and sustainability, modern models
also adopt energy-saving technologies, such as variable-frequency
motors and high-efficiency heating, cutting energy use by 20-30%.
In summary, the plastic sea ball extrusion blow molding machine
bridges the gap between market demand and manufacturing excellence.
Its precise engineering, automated workflows, and quality control
capabilities make it indispensable for producing the safe, durable
sea balls that families and facilities trust. For manufacturers
looking to scale production without compromising on standards,
investing in this specialized equipment is a strategic choice.
| Basic Parameters |
| Applicable Material | PE |
| Max Product Volume | 1L |
| Machine Dimensions | L × W × H ≈ 4400 × 2900 × 2800 mm (detachable for delivery) |
| Machine Weight | 7.2 tons |
| System Category | System Description | Specification Details |
| Plasticizing System | Overview | High-torque gearbox,stable performance, lownoise |
| Overview | High-torque hard-tooth surface reducer |
| Machine Base | Ø80mm screw; AC motor + gearbox; inductionheating for energy
saving; heating efficiency upto 95% |
| Plasticizing Capacity | 90 kg/hr |
| Heating Power | 4 heating zones(automatic temperature control) |
| Heating Method | Ceramic heating ring |
| Feeding Motor | 22 kW ± relative power range (380V/ 50Hz) |
| Cooling Fan | Forced air cooling for heating zones |
Extrusion Die Head | Overview | Continuous extrusion die head |
| Die Head Type | 3 die head |
| Die Head Center Distance | |
| Heating Zones | 3 sections stainless-steel heating |
| Heating Power | 10kw |
Dawson Machine After-Sales Service: Your Global Manufacturing
Partner, Beyond the Sale We don't just sell machines--we stand by
you through every stage of your production journey.
✅ On-Site Support, Anywhere in the WorldOur technical team travels
globally (like the on-site service in the photo) to install, debug,
and train your staff. We ensure your blow molding/injection molding
equipment runs at peak efficiency, no matter where your factory is.
✅ 24/7 Expert TroubleshootingGot a problem at 3 AM? Our multilingual
support team is ready to resolve technical issues via video call,
remote assistance, or urgent on-site dispatch. Downtime is our
enemy—your productivity is our priority.
✅ Lifetime Maintenance & Upgrade GuidanceFrom routine maintenance to
upgrading molds (like the plastic containers in the image), we
provide tailored solutions to keep your production line
competitive. Your success is our long-term commitment. Choose
Dawson: Where After-Sales Service Isn’t Just a Promise—It’s a
Global Reality.Contact us today to see how our after-sales
excellence can power your manufacturing growth.
DAWSON MACHINE & MOULD GROUP
located in Zhangjiagang city, have more than 18 years' experience
in the field of plastic machinery,
injection molding machine, blow molding machine, PET blow molding
machine, injection blow molding machine, during the past 18 years,
we always force our energy into new areas of plastic machinery,
plastic packaging machinery, to update the technology, to learn
advanced experience, to confirm new theory and new design, we are
forming a unique competitive advantage of our owns.
The machines from our company carry good quality and effective
after-sales service, upon the market,
customers from more than 45 countries, we provide complete solution
for your plastic industry
business, as well as all sorts of technical support & after-sale
services!
