Introduction to One-Step Injection Stretch Blow Molding
Upgrading your manufacturing capacity shouldn’t require abandoning your existing tooling investments. The one-step injection stretch blow molding process is a highly efficient plastic container forming technology widely used for high-precision, demanding hollow products. From baby bottles and water cups to pharmaceutical containers and cosmetics packaging, this process handles materials like PET, PETG, PP, PC, Tritan, PS, ABS, and PLA with ease.
The core characteristic of this single stage injection stretch blow molding machine is that the three primary steps—injection, stretching, and blow molding—are completed continuously within a single piece of equipment. By eliminating intermediate handling and reheating steps, manufacturers experience a massive boost in production efficiency and product consistency.
Standard Process Flow
- Injection: Raw plastic is melted and injected to form the preform.
- Preform Tail Cutting / Heat Preservation: The preform temperature is conditioned for ideal stretching.
- Stretch Blow Moulding: The preform is stretched axially and blown radially.
- Bottle Take-out: The finished product is cleanly ejected.
Core Advantages of the EPY150-V4
- High Efficiency & Energy Saving: Bypasses secondary preform reheating by utilizing residual injection heat, reducing energy consumption by approximately 40%.
- Superior Performance: Biaxial molecular orientation drastically improves the container’s compression resistance, gas barrier, and clarity.
- High Precision & Dimensional Stability: Fully automated control minimizes human error, perfect for large-scale, continuous production runs.
- Maximum ROI: Features low energy use, reduced labor needs, a compact footprint, and competitive pricing with robust stability.
Technical Comparison: Ever Power vs. Mainstream Global Brands
When evaluating a new ISBM blow molding machine, it is crucial to understand how it stacks up against legacy Japanese or European equipment. The EPY150-V4 is engineered to deliver top-tier performance while ensuring 100% compatibility with your existing ASB-12M tooling.
| Parameter | Ever Power EPY150-V4 | Legacy Japanese Equivalents |
|---|---|---|
| Mold Compatibility | Fully compatible with ASB-12M molds (Plug & Play) | Proprietary only |
| Drive System | Full Servo-Electric (High Precision, Low Noise) | Often Hydraulic or Hybrid |
| Energy Consumption | Extremely Low (~40% Savings) | Standard / High |
| Control Interface | Smart Multi-Axis PLC with Remote Diagnostics | Traditional PLC |
| Capital Investment | Highly Cost-Effective | Premium / Expensive |
Equipment Composition & Key Technologies
The equipment consists of five major integrated systems. Here is how our engineering guarantees flawless production:
1. Precision Injection System
The injection unit utilizes a high-precision servo-driven mechanism equipped with our proprietary, patented screw and barrel design to ensure incredibly uniform plasticization of the melt.
Ever Power’s Patented High-Efficiency Screw Design
- High-precision temperature control system (accuracy within ±1℃).
- Servo-driven injection unit for rapid response and ultimate repeat accuracy.
- Advanced preform wall thickness control (axial and radial optimization).
2. Intelligent Heating System
Using zoned heating rings or advanced water/oil temperature control, the system features non-contact temperature measurement to avoid preform surface damage. It automatically adapts heating power based on real-time production speeds.
3. Stretch Blow System
Comprising stretch rods, blow cores, and high-pressure air valves, this system executes rapid axial and radial expansion. Stretching speeds reach up to 400mm/s with a position accuracy of ±0.1mm. Our independent pressure regulating system keeps air fluctuations strictly within ±0.05MPa.
4. Advanced Mold System
The EPY150-V4 utilizes a rotating multi-station structure. We offer both 3-station and 4-station configurations depending on material requirements. The 3-station is standard for straightforward shapes, while the 4-station incorporates an extra conditioning step for complex resins like thick-walled PETG.
3-Station Layout: Injection, Blow Molding, Ejection.
4-Station Layout: Injection, Conditioning/Tail Cut, Blow Molding, Ejection.
Our high-precision mold processing ensures cavity surface roughness of Ra≤0.8μm. Optimized cooling channels slash cooling times by 30%, and rapid tooling technology allows mold changes in under 60 minutes. Proper wiring is crucial for these complex molds:
We also design and manufacture premium custom molds in-house.
5. Centralized Control System
An independent, multi-axis motion controller synchronizes all stations perfectly. Adaptive process parameters adjust in real-time based on production data, backed by a remote diagnostic system to maximize uptime.
Material Applications & Product Types
The EPY150-V4 excels as a versatile solution, particularly acting as the ideal one step blow molding equipment for cosmetic packaging, pharmaceuticals, and food/beverage applications. Supported materials include:
- PET: High transparency and barrier properties, perfect for beverage bottles and food jars.
- PP: Excellent high-temperature resistance (>120℃) for hot-fill juice and tea containers.
- PETG: Superior toughness, colorability, and chemical resistance. Ideal for thick-walled cosmetic jars, mascara, and lip gloss packaging without stress whitening.
- PC: High strength and heat resistance for infant feeding bottles and sports cups.
This machine efficiently produces round or asymmetrical containers ranging from 5ml up to 20L.
The Critical Role of Matched Air Compressors
A high-quality one-step blow molding machine cannot operate effectively without an equally capable air supply. The stretch blow molding phase requires significant volumes of high-pressure air to force the preform against the mold walls rapidly and accurately.
Ever Power provides customized, matched oil-free screw air compressors. In pharmaceutical and food applications, 100% oil-free air is a strict regulatory requirement to prevent internal container contamination. Furthermore, our matched compressors guarantee absolute pressure stability. Even minor pressure drops can result in uneven bottle wall thickness, improper thread formation, or incomplete bottom shapes. Investing in our integrated air system ensures your ISBM machine operates at peak capacity with zero defect rates.
What Our Global Clients Say
“We transitioned our existing ASB-12M mold inventory to the Ever Power EPY150-V4 without a single issue. The servo-driven injection is incredibly precise, ensuring our oral liquid medicine bottles meet strict dosing tolerances. The power savings have been noticeable since day one.”
— Plant Manager, Pharmaceutical Packaging Co., USA
“Producing thick-walled PETG luxury cosmetic jars used to result in high scrap rates due to clouding. The 4-station conditioning setup on this machine handles PETG beautifully, providing glass-like clarity. It’s a game-changer for high-end cosmetic packaging.”
— Operations Director, Luxury Beauty Packaging, France
“We needed a fast, reliable solution for hot-fill PP tea bottles. The Ever Power machine runs continuously with exceptional stability. Their integrated oil-free compressor keeps the blowing pressure rock-solid, entirely eliminating the irregular bottom formations we used to see.”
— Technical Lead, Beverage Solutions Ltd., Thailand
Ready to Upgrade Your Production Line?
Frequently Asked Questions (FAQ)
1. Do I need to modify my Japanese ASB-12M molds to fit the EPY150-V4?
No modifications are required. Our machine is specifically engineered with matching platen dimensions, tie-bar spacing, and stroke lengths to accept ASB-12M molds natively. It is a true plug-and-play upgrade.
2. How much energy can I expect to save compared to older hydraulic models?
Customers typically report energy savings of around 40%. This is achieved by the direct heat utilization of the one-step process and the high-efficiency servo motors that only consume power during active movements, unlike constantly running hydraulic pumps.
3. Can this machine process challenging materials like Tritan or heavy-wall PETG?
Absolutely. By selecting the 4-station configuration and utilizing our specialized screw profiles, the machine provides the precise temperature conditioning required to process complex resins without defects like stress whitening or burn marks.
4. What is the typical lead time for delivery and installation?
Standard machine delivery is generally 45 to 60 days. If custom molds are ordered simultaneously, an additional 15-20 days are needed for rigorous testing. Our global engineering team will then travel to your site to ensure a swift setup.
5. Are spare parts difficult to source internationally?
Not at all. We utilize globally recognized components for critical systems (e.g., servo drives, PLCs, pneumatic valves). Standard parts can be sourced locally in most countries, and proprietary parts are dispatched immediately via international express shipping from our factory.
