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!
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