Contact Us

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.

Have questions about our one-step Injection stretch blow moldings? Need a quote, technical specs, or after-sales support? Contact us—we reply within 24 hours.

quote form

Frequently Asked

^

What is Injection Stretch Blow Molding Machine?

Injection Stretch Blow Molding Machine, also known as an injection stretch blow moulding machine or ISBM Machine, is a kind of plastic bottle production equipment. By injecting plastic raw materials into molds, heating, pressurizing, and blowing air, it processes plastic into products of the required shape and size. It is usually used to produce various plastic bottles, containers, cans, and other products. The Injection Stretch Blow Molding Machine integrates four processes, including the injection process, the stretching process, the blowing process, and the molding process. The ISBM machine does not require a second-stage process or the assistance of other equipment.
^

What Is the Working Process of an Injection Stretch Blow Molding Machine?

Injection stretch blow molding machine is divided into four main processes: Injection process, stretch process, blow process and molding process. The entire process is continuously completed within one machine, featuring high automation, high precision and good consistency of bottle shapes.
^

How to Use Injection Stretch Blow Molding Machine for Bottle Manufacturing?

1. Prepare Raw material: Select appropriate plastic and check the drying status to avoid moisture. Preheat the Machine: Set the appropriate mold and preheat to the required process temperature.

2. Set Parameters: Select appropriate injection pressure, speed, stretching rod, and blowing pressure. Choose Cooling Duration: Adjust the cooling cycle reasonably to ensure the bottle forms.

3. 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 achievean accurate shape.

4. Check the Product: Check the bottle body size and wall thickness to ensure they meet the standards. Optimize Quality: Adjust manufacturing parameters and optimize product quality.

^

What Are the Common Malfunctions of the One Step Injection Stretch Blow Molding Machine?

Operators often encounter several problems when using a one step injection blow molding machine. Many issues stem from the integration of injection and blow molding processes. Incorrect cycle parameters, such as improper temperature, cycle time, or cooling time, can cause defects in finished products. Dirty molds or the use of low-quality mold release agents also lead to poor part quality. Operators should adjust cycle parameters to optimal settings and clean molds thoroughly to remove contaminants. Using high-quality mold release products designed for blow molding improves efficiency.

Some frequent machine-related issues include:

  • Machine won’t start: Operators should check the power supply, inspect cables, and verify temperature levels inside the chambers. Pressure switch settings may also need adjustment.
  • Machine won’t stop: Inspecting the pressure switch, checking hydraulic oil levels, and looking for leaks in hoses can resolve this problem.
  • Machine can’t hold pressure: Checking wiring connections, detecting air leaks, and replacing clogged filters or worn seals often fix this issue.
  • Machine is noisy: Operators should verify motor speed control, check for leaks, and inspect molds for cracks that cause vibrations.
^

What Types of Raw Material Can Be Used in One Step Injection Stretch Blow Molding Machine?

One Step Injection Blow Molding Machine is used for Plastic PP, PE, PET, PETG, PCT, PC, Tritan, PS, ABS, PLA, cosmetic bottles, sports water bottles, chemical bottles, and medicine bottles. It has an automatic injection moulding machine and a semi-automatic injection moulding machine, two types. Injection blow molding systems can process the widest range of resins into any shape – from small containers to wide-mouth cans, as well as many industrial parts.
^

What Are the Advantages of Injection Stretch Blow Molding Machines?

  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 a small factory or a clean workshop with limited space.
^

What’s the Difference Between One-Step and Two-Step Injection Stretch Blow Molding?

One-step (single-stage) injection stretch blow molding produces finished bottles from resin in one machine, ideal for low-volume, complex, or high-quality, blemish-free, specialized bottles. Two-step (two-stage) splits this into creating preforms in one machine and blowing them later, making it faster, more efficient, and cheaper for high-volume mass production.
^

How to Maintain Injection Stretch Blow Molding Machine?

  1. Regular Cleaning: Clean the injection and blowing molds to keep the mechanical parts free of dust and oil.
  2. Lubrication Maintenance: Apply lubricating oil to components such as guide rails to prevent wear.
  3. All Electric System Checking: Check the stability of the electric system to ensure their normal operation.
  4. Electrical System Maintenance: Inspect the interior of the electrical system to prevent short circuits.
  5. Mold Maintenance: Inspect the wear of the molds and replace them immediately.
  6. Machine Adjustment: Adjust the machine parameters and various components to ensure product accuracy.

One-step Injection Stretch Blow Moulding Machine for Sale

[email protected]

+52 5591318924

Avenida Ejercito Nacional 418 – Oficina 302, 3er. Piso Polanco, Polanco V Secc, 11560 Ciudad de MéxicoCDMX – MEXICO

Request A Quote