One Step Injection Stretch Blow Molding Machine
One-step Injection stretch blow molding is a highly efficient plastic container molding process widely used in the production of high-precision, high-demand hollow plastic products (e.g., baby bottles, water bottles, medicine bottles, craft and special-shaped bottles, cosmetic bottles made of PET, PETG, PP, PC, Tritan, PS, ABS, or PLA, etc.). Its core feature is that the three steps of injection, stretching, and blow moulding are completed continuously in the same equipment without intermediate steps, which greatly improves production efficiency and product stability.
Mexico Ever-Power ISBM Machinery Co., Ltd
Mexico Ever-Power ISBM Machinery Co., Ltd is a leading manufacturer and supplier of one step injection stretch blow molding machines. Our specially designed blow molding machines cover the packaging of various materials (PET/PETG/PC/PCTG/PP) for cosmetics, water, oil, beverages, food, pharmaceuticals, baby products, etc. The company holds a leading position in the industry, especially in the fields of high-end cosmetics, food, and pharmaceuticals for specialized blow molding machines. We have established partnerships with many well-known brands, such as C’ESTBON, HAITIAN, Luhua, Walch, Blue Moon, PROYA, Liby, Estee Lauder, Wal-Mart, Dasenlin, Shanliang Eye Drops, etc.
It is Mexico Ever-Power ISBM Machinery’s consistent business goal to create the best cost-effective and most comprehensive packaging machinery in Mexico, following the production philosophy of professionalism, concentration, innovation and win-win situation. At the same time, Mexico Ever-Power has cultivated a group of professional service team consisting of top talents in the industry, which is well recognized and praised by customers for its excellent services.
Core Advantage
Energy Effcient
One-step Injection stretch blow moulding machine directly keeps the temperature of the preform until blowing, so there is no need for secondary heating of the preform, which could reduce 40% energy consumption.
Excellent Performance
Stretching makes the material molecules oriented stretching, which significantly improves the compression resistance, barrier
properties and transparency of the bottle.
High Precision and Stability
Full process automation control to reduce human error, which is suitable for mass production.
High Material Utilization
Less waste material, environmental protection and low cost.
Main Products
Y50-V3-EV One-step Injection Stretch Blow Molding Machine
Screw Diameter: 40mm(optional);
Theoretical Injection Capacity: 239g;
Injection clamping force: 50KN;
Upper mold stroke: 280mm;
Lower mold stroke: 280mm;
Take-out stroke: 150mm;
Blow core stroke: 100mm;
Y150-V4 One-step Injection Stretch Blow Molding Machine
Screw Diameter: 50mm(optional);
Theoretical Injection Capacity: 310g;
Injection clamping force: 150KN;
Upper mold stroke: 250mm;
Lower mold stroke: 205mm;
Take-out stroke: 170mm;
Blow core stroke: 250mm;
Y150-V4-EV One-step Injection Stretch Blow Molding Machine
Screw Diameter: 50mm(optional);
Theoretical Injection Capacity: 392g;
Injection clamping force: 150KN;
Upper mold stroke: 250mm;
Lower mold stroke: 205mm;
Take-out stroke: 170mm;
Blow core stroke: 250mm;
Y200-V4 One-step Injection Stretch Blow Molding Machine
Screw Diameter: 50mm(optional);
Theoretical Injection Capacity: 310g;
Injection clamping force: 300KN;
Upper mold stroke: 460mm;
Lower mold stroke: 210mm;
Take-out stroke: 175mm;
Blow core stroke: 300mm;
Y200-V4-B One-step Injection Stretch Blow Molding Machine
Screw Diameter: 50mm(optional);
Theoretical Injection Capacity: 442g;
Injection clamping force: 300KN;
Upper mold stroke: 600mm;
Lower mold stroke: 350mm;
Take-out stroke: 175mm;
Blow core stroke: 300mm;
Y250-V4 One-step Injection Stretch Blow Molding Machine
Screw Diameter: 55mm(optional);
Theoretical Injection Capacity: 420g;
Injection clamping force: 300KN;
Upper mold stroke: 640mm;
Lower mold stroke: 350mm;
Take-out stroke: 190mm;
Blow core stroke: 300mm;
Y250-V4-B One-step Injection Stretch Blow Molding Machine
Screw Diameter: 60mm(optional);
Theoretical Injection Capacity: 680g;
Injection clamping force: 300KN;
Upper mold stroke: 600mm;
Blow mold stroke: 75+75mm;
Take-out stroke: 200mm;
Blow core stroke: 300mm;
Y280-V6 One-step Injection Stretch Blow Molding Machine
Screw Diameter: 50mm(optional);
Theoretical Injection Capacity: 310g;
Injection clamping force: 150KN;
Upper mold stroke: 250mm;
Lower mold stroke: 205mm;
Take-out stroke: 170mm;
Blow core stroke: 250mm;
Y650-V4 One-step Injection Stretch Blow Molding Machine
Screw Diameter: 60mm(optional);
Theoretical Injection Capacity: 480g;
Injection clamping force: 400KN;
Upper mold stroke: 1070mm;
Lower mold stroke: 550mm;
Take-out stroke: 300mm;
Blow core stroke: 300mm;
Working Process of Injection Stretch Blow Molding Machine
Injection Process
The injection process is the initial stage of the entire process. Molten plastic (such as PET particle) is injected into the preform mold and melt into a flowing plastic melt under high temperature and pressure. At this process, it is necessary to control parameters such as injection speed, injection pressure and mold temperature to ensure that the melting plastic has good fluidity and filling ability so that it can uniformly and completely fill the mold cavity, obtaining the required shape and size.
Stretching Process
The injection-molded plastic is removed from the mold and undergo initial cooling and shaping. After that, the preform is sent into the heating zone and reheated to a temperature which is suitable for stretching. After the heating is completed, the stretching rod elongates the preform longitudinally, preparing for blow process. At this process, it is necessary to control the cooling time and heating temperature to ensure the dimensional stability and surface quality of plastic products.
Blowing Process
After stretching, the plastic product is placed in the blowing mold and compressed air is used to expand the plastic product. Therefore, the softened preform adheres to the inner wall of the mold and forms the predetermined bottle shape outline. It is crucial to the final shape and structure of plastic bottles. At this process, it is necessary to control parameters such as blow molding pressure and mold temperature to ensure that the shape and size of the obtained plastic products meet the requirements.
Molding Process
After blowing, the bottle needs to be cooled and formed in the mold. Through the cooling medium in the cooling channel of mold, the heat of the bottle body is quickly removed, allowing the plastic material to solidify and maintain its accurate shape, achieving the required surface finish and dimensional accuracy. At this process, it is necessary to control the uniformity, speed and duration of cooling. Also, the temperature of the mold should be controlled to improve the quality of the bottle and production efficiency.
Advantage of Single Stage Injection Stretch Blow Molding Machine
1. Shorten Production Cycle
Complete the entire production process from injection to molding in one machine, significantly enhancing production efficiency.
2. Improve Production Efficiency
Quickly and precisely manufacture large quantities of plastic products, with production efficiency far exceeding that of manual production and other traditional molding processes.
3. Improve Molding Precision
Precisely control the temperature, pressure and speed of the mold, achieving a high degree of consistency in product size, shape and density.
4. Reduce Labor Cost
Reduce unstable factors caused by human factors and lower human resources with fully automated operation.
5. Ensure Energy Conservation
Only use plastic particles and recycle them, reducing waste and environmental impact.
6. Need Small Working Space
Suitable for small factory or clean workshop with limited space.
Available Raw Materials
Injection Stretch Blow Molding (ISBM) machines primarily use thermoplastic materials that can be stretched to enhance strength and clarity. The most common raw material is Polyethylene Terephthalate (PET) for bottles, alongside Polypropylene (PP) for heat-resistant containers, and specialized materials like Polycarbonate (PC), Polyvinyl Chloride (PVC), or Acrylonitrile Butadiene Styrene (ABS) for specialized applications.
PP
PE
PET
PC
PCT
PETG
Polypropylene is a polymer that can have a wide range of properties that depends on its molecular weight, morphology, crystalline structure, additives, and copolymerization. It can be made into polymers with a high degree of crystallinity; thus, higher tensile strength and hardness which is comparable to HDPE. Moreover, they can withstand higher temperatures without loss of strength or degradation. The disadvantages of using PP are its susceptibility to UV degradation and oxidation.
Polycarbonate is easily processed by different molding methods, with injection molding and sheet extrusion being the most common. In blow molding, its usual application is bottle production. Polycarbonates are known for their high impact strength, heat resistance, good electrical insulation, transparency, good water barrier properties, and inherent flame retarding properties.
Polyethylene is the most widely used blow molding material. Polyethylene has many desirable characteristics such as easy processability, toughness, and flexibility which are retained even at low temperatures, odor and toxin free, excellent clarity, good water barrier properties, good electrical insulation properties, and low cost. It has two main types: high-density polyethylene (HDPE), and low-density polyethylene (LDPE).
PET, specifically biaxially oriented PET, is known for its low permeability to carbon dioxide. This makes the material desirable for producing bottles for carbonated beverages. The downside of using PET, however, is its affinity with water. It tends to absorb water which makes processing difficult as the resin needs to be dried before extrusion.
ISBM Machine for Bottle Manufacturing
1. Machine Preparation
Prepare Raw material: Select appropriate plastic and check the drying status to avoid moisture. Preheat the Machine: Set appropriate mold and preheat to the required process temperature.
2. Parameter Setting
Set Parameters: Select appropriate injection pressure, speed, stretching rod, and blowing pressure. Choose Cooling Duration: Adjust the cooling cycle reasonably to ensure the bottle forming.
3. Manufacturing Operation
Injection: Inject molten plastic to form the preform. Stretching: Heat the preform to optimal temperature and stretch with the stretch rod. Blowing: Use high-pressure air to blow the preform into the final bottle shape. Molding: Cool and solidify the plastic bottle to achieve accurate shape.
4. Quality Inspection
Check the Product: Check the bottle body size, wall thickness to ensure they meet the standards.
Optimize Quality: Adjust manufacturing parameters and optimize product quality.
Injection Stretch Blow Molding Applications
Building on the above-mentioned strengths, ISBM technology supports a wide range of industries, particularly where container quality and design versatility are essential:
- Personal care and cosmetics: Elegant bottles, lotion containers, spray bottles, and cosmetics packaging benefit from ISBM’s aesthetic and functional versatility.
- Pharmaceutical and medical packaging: ISBM is perfect for sterile containers, medication bottles, dropper bottles, reagent containers, and small storage bottles requiring high levels of cleanliness and sealing integrity.
- Industrial and laboratory uses: Durable PET and PC bottles for chemical reagents and laboratory substances rely on ISBM’s precision and strength.
- Custom and specialized containers: Uniquely shaped containers tailored for niche markets and brand-specific requirements can be efficiently produced using ISBM.
- Food and beverage packaging: PET bottles for water, carbonated drinks, juices, sauces, and oils benefit from ISBM’s reliability and refined finish.
Water and Beverage Bottles
Cosmetic Packaging Bottles
Medicine Packaging Bottles
Baby Feeding Bottles
Edible Oil & Condiment Bottles
Personal Care Packaging Bottles
Gallon Water Bottles
Food Wide-Mouth Bottles
Pesticide and Chemical Bottles
One-Step Vs. Two-Step Blow Molding
| Feature | One-Step Blow Molding | Two-Step Blow Molding |
|---|---|---|
| Process Integration | Preform injection, temperature conditioning, stretching, and blowing performed sequentially in a single machine (ISBM) | Preforms manufactured by injection molding, then reheated and blown in a separate stage (RSBM) |
| Machine Configuration | All-in-one ISBM (integrated) machine | Injection molding machine plus reheat stretch blow molding machine |
| Preform Storage Requirement | No storage of preforms | Preforms manufactured and stored, transported, or sold separately |
| Production Volume Suitability | Low to medium | Medium to high |
| Ideal Production Runs | Limited production runs and small batches | High-volume production and mass production |
| Bottle Design Flexibility | High, suitable for custom packaging and complex bottle shapes | Medium |
| Typical Number of Cavities | Typically 4–12 | 8–72 for rapid output |
| Output Speed | Slower | Faster |
| Energy Efficiency | Good (no reheat needed) | Lower (needs preform reheating) |
| Mold Changeover Time | Longer | Shorter |
| Cost per Unit | Higher (small batch) | Lower (bulk production) |
| Preform Inventory Needed | Not required | Required |
| Common Use Cases | Cosmetics, pharma, premium personal care, specialty drinks | Bottled water, juice, detergents, high-volume beverages |
| Machinery Investment | Medium to high | High |
| Mold Cost | High (more complex) | Lower |
| Operational Complexity | Lower (1 machine) | Higher (2 stages) |
| Bottle Surface Quality | Better (no dust from storage) | Potential risk of preform contamination if stored poorly |
| Lead Time for New Designs | Shorter from design to finished bottle | Longer due to separate stages |
| Space and Inventory Requirements | Lower | Higher (requires space for multiple machines and inventory) |
Choose the Right One Step Injection Stretch Blow Molding
Material Properties
PET works well with injection stretch blow molding due to its ability to stretch in two directions. HDPE suits extrusion blow molding for products with handles or complex shapes.
Product Design and Complexity
Extrusion blow molding handles irregular shapes and handles. Injection stretch blow molding and injection blow molding suit simple, symmetrical designs.
Production Volume
High-volume production benefits from automated systems like the injection stretch blow molding machine.
Product Design and Complexity
Extrusion blow molding handles irregular shapes and handles. Injection stretch blow molding and injection blow molding suit simple, symmetrical designs.
Cost Considerations
Extrusion blow molding usually has lower equipment costs. Injection stretch blow molding and injection blow molding require higher investment in tooling and machines.
Environmental Impact
All plastic blow molding methods generate waste, but using recycled plastics and biodegradable materials can reduce harm. Injection stretch blow molding produces recyclable containers and offers efficient resource use.
Customer Reviews
“We’ve been running the Mexico Ever-Power Y150-V4 one-step injection stretch blow molding machine in our Midwest facility for over 18 months straight, producing 500ml to 1500ml PET beverage bottles with perfect wall thickness every single shift. The four-station setup delivers rock-solid consistency, and the 40% energy savings from skipping secondary heating has cut our monthly power costs noticeably. No major breakdowns, and the build quality feels built to last through heavy daily use.”
“After installing the HGY50-V3-EV full servo three-station machine 18 months ago, we have been producing high-quality PETG cosmetic bottles with exceptional clarity and strength. The energy savings from not needing secondary heating has been around 40 percent, which really helps our bottom line in our Osaka plant. The Mexico Ever-Power team provided excellent setup support and quick responses to our questions throughout the process.”
“We chose the Y250-V4 for our smaller production runs of specialty medicine bottles in PET. It is compact, energy-efficient with the full servo system, and the controls make daily operation straightforward for our team. We have saved significantly on power costs since installation last year, and the output consistency beats our previous equipment hands down. Delivery was fast and the machine arrived in perfect condition.”
“Logistics from Mexico went smoother than expected – our Y150-V4 one step ISBM machine injection stretch blow molding machine arrived within the promised timeframe and was up and running in days after customs. The machine’s automation has reduced our labor needs significantly for our skincare line, and the bottles show excellent transparency and strength every batch. Great value overall for our cosmetic production requirements.”
“The Y200-V4 arrived at our São Paulo plant just 12 days after we placed the order—impressive logistics for a full container shipment. We’ve used it daily for 11 months now on 1000ml food-grade PET wide-mouth jars, and the clamping force handles the thicker preforms without any flashing. Output is steady at 1200 pieces per hour, and the machine still looks and runs like new despite the humid warehouse conditions.”
“For our high-end cosmetic line we chose the Y250-V4 one-step injection stretch blow molding machine, and after 22 months of continuous operation, it still delivers mirror-like transparency on 50ml to 200ml PET bottles. The servo-driven rotation gives us precise positioning every cycle, which is critical for our premium branding. German standards are strict, but this Chinese machine meets every tolerance we set without compromise.”
“The versatility across PET and PETG materials on our Y150-V4-EV is a real game changer for our varied client needs in premium olive oil and beverage bottles. After 19 months of steady use, output remains stable at high speeds and the energy savings have lowered our costs noticeably. Support staff helped optimize settings for PETG remotely with patience and expertise.”
“Reliability is crucial in our high-volume production of beverage bottles, and the Mexico Ever-Power Y650-V4 handles large 5- to 20-liter water cooler containers without any issues. The four-station design maximizes efficiency while keeping scrap rates low. Their after-sales service responded promptly to our initial queries during the first quarter of operation.”
Frequently Asked Questions
Can Your Single Stage Injection Stretch Blow Molding Machine Use Existing Molds from ASB or AOKI Brands?
Absolutely. Mexico Ever-Power’s injection stretch blow molding machines are engineered for compatibility with popular Japanese tooling, including ASB-12M and similar AOKI injection stretch blow molding machines formats. Many models already list direct compatibility with ASB-style molds, allowing customers to leverage existing tooling investments without full replacement while maintaining full performance guarantees.
How Do I Properly Maintain a Single-Stage Injection Stretch Blow Molding Machine to Ensure Long Service Life?
Daily maintenance includes checking cooling water quality at 0.4-0.6 MPa, inspecting servo motors and NSK lead screws for lubrication every 500 hours, and cleaning the integrated control box filters. Quarterly calibration of Parker high-pressure valves and annual deep cleaning of the blow core and stretch rods will keep your single stage injection stretch blow molding machine operating at peak efficiency for years.
What Makes Mexico Ever-Power ’s ISBM Machine Models Suitable for Cosmetic and Pharmaceutical Bottle Production?
Mexico Ever-Power ISBM machine variants feature full servo control with Yaskawa motors and precise clamping forces (100-400 kN), delivering the ultra-clean surfaces and tight neck tolerances demanded by premium cosmetic and pharmaceutical brands. Proven partnerships with companies like Blue Moon, Liby, and Estee Lauder equivalents confirm consistent performance in these sensitive markets.
Which Model of One Step Injection Stretch Blow Molding Machine Is Best for Producing 5-Liter to 20-Liter Large Water Bottles?
The Y650-V4 four-station model is specifically optimized for large containers, offering 400 kN injection clamping force, 1070 mm upper mold stroke, and capacity up to 20 L with 900 g bottle weight. Its robust 60 mm screw and dual servo options provide the power and stability required for thick-wall large-volume bottles.
How Does the Full Servo Technology in Injection Stretch Blow Molding Machine Improve Production Stability?
All servo systems from Inovance and Yaskawa, combined with precise PLC control, eliminate hydraulic fluctuations common in older machines. This results in repeatable shot weights, consistent wall thickness distribution, and reduced reject rates across every cycle, making the equipment ideal for high-volume, high-specification production runs.
