DR-15L One-to-Two Fully Automatic Blow Molding Machine

The DR-15L series fully automatic blow molding machine is our company's most stable two-step down-blowing fully automatic blow molding equipment. It ranges from one-outlet to six-cavity blow molding, capable of producing bottles up to 0.6 liters and 2 liters. It is suitable for blowing any shape of carbonated beverage bottles, mineral water bottles, cosmetic bottles, large-diameter bottles, high-temperature resistant bottles, and other packaging containers made from crystalline plastics such as PET and PP.

Features

1. Fully automatic human-machine interface, easy operation, stable machine operation, few malfunctions, and fast blowing speed.

2. Reasonable material selection, precision machining, and fine surface treatment for all machine parts.

3. Adopts a rotary continuous preform loading mechanism, which has high compatibility with preforms, provides stable and continuous loading, high speed, and high efficiency, overcoming the shortcomings of traditional intermittent preform loading by robotic arms.

4. Dense arrangement of preforms in the heating zone, fast and uniform heating, and energy saving.

5. 6. The chain for the heating zone's revolution drive uses an original imported chain from Tsubakimoto, Japan. This chain has precise pitch and is durable.

7. The chain for the heating zone's revolution drive is designed with a mold spring flexible tensioning mechanism, extending the chain's service life.

8. The PET Blow Molding Machine's bottle mouth is equipped with a cooling air blowing device, which can more effectively protect the preform's threaded ends.

9. The spacing mechanism is rationally designed, ensuring accurate and reliable spacing.

10. The preform (bottle) conveying mechanism uses original imported German Festo servo motors and electro-positioning systems, ensuring fast preform (bottle) conveying speed and high repeatability, overcoming the shortcomings of traditional pneumatic conveying mechanisms.

11. The cylinder-type mold-locking mechanism provides strong mold locking and stable and reliable operation.

12. The preform stretching uses a servo motor, offering fast stretching speed, accurate stretching stroke, and arbitrarily adjustable stretching stroke.

13. The blowing (exhausting) system uses original imported German Festo combination valves, offering fast blowing (exhausting) speed and long service life. Bottles can be directly fed into the filling line. The innovative conveyor mechanism ensures smooth and reliable transport.

14. Interoperability programs are installed between all operating mechanisms of the machine to protect it.

Parameters

1. Introduction

The 15L One-to-Two Fully Automatic Blow Molding Machine for High Precision Bottle Forming is an advanced industrial solution designed for producing large-capacity plastic containers, particularly in the range of 10L to 15L PET bottles. This type of equipment plays a critical role in industries such as beverage, food processing, chemicals, pharmaceuticals, and household products, where large-volume packaging is essential.

With the increasing demand for high precision bottle forming, energy-efficient manufacturing, and automated production systems, fully automatic blow molding machines have become the preferred choice for modern factories. Compared to traditional or semi-automatic systems, these machines offer higher output, improved consistency, reduced labor costs, and enhanced product quality.

The one-to-two cavity design provides flexibility, allowing manufacturers to switch between single-cavity high-precision production and dual-cavity high-efficiency output, depending on operational needs.

2. Definition and Core Concept

A 15L One-to-Two Fully Automatic Blow Molding Machine is a type of PET stretch blow molding equipment that converts plastic preforms into finished bottles through a controlled heating, stretching, and high-pressure air blowing process.

Key Concepts

3. Working Principle

The machine operates based on a two-step stretch blow molding process, widely used for producing high-quality PET bottles.

Step-by-Step Process

1. Preform Feeding
   Preforms are automatically loaded into the system using a feeding unit.

2. Heating Stage
   Preforms pass through an infrared heating oven where they are evenly heated to a suitable forming temperature.

3. Stretching Process
   A mechanical stretch rod elongates the preform vertically to align molecular chains and improve strength.

4. High-Pressure Blowing
   Compressed air expands the softened preform into the mold cavity.

5. Cooling Phase
   The mold rapidly cools the bottle to maintain shape and structural integrity.

6. Ejection System
   Finished bottles are automatically discharged and transferred for further processing.

This process ensures clarity, strength, and uniform thickness distribution, which are critical for large-capacity containers.

4. Machine Structure and Main Components

The machine consists of several integrated systems that work together to ensure efficient and precise production.

Core Components

5. Key Features and Advantages

5.1 High Precision Bottle Forming

• Accurate neck finish and thread quality

• Uniform wall thickness distribution

• Reduced deformation and material stress

5.2 Fully Automated Operation

• Automatic feeding, heating, blowing, and unloading

• Minimal human intervention

• Continuous and stable production

5.3 Flexible One-to-Two Cavity Design

• Single cavity mode for precision-focused production

• Dual cavity mode for increased output

5.4 Energy Efficiency

• Optimized infrared heating system

• Servo motor-driven mechanisms

• Reduced compressed air consumption

5.5 High Production Stability

• Advanced PLC control system

• Real-time monitoring and fault detection

• Consistent product quality

5.6 Wide Application Range

• Drinking water containers

• Edible oil bottles

• Chemical liquid containers

• Household product packaging

6. Technical Specifications (Reference Table)

7. Single vs Dual Cavity Comparison

8. Applications Across Industries

8.1 Beverage Industry

• Large bottled water containers (10L–15L)

• Bulk beverage storage solutions

8.2 Food Industry

• Edible oil packaging

• Liquid food containers

8.3 Chemical Industry

• Detergent bottles

• Industrial liquid packaging

8.4 Pharmaceutical Industry

• Disinfectant containers

• Bulk liquid medicine packaging

9. Materials Used

Primary Material: PET (Polyethylene Terephthalate)

Other Compatible Materials

• PP (Polypropylene)

• PC (Polycarbonate)

10. Advantages Over Semi-Automatic Machines

11. Energy Efficiency and Cost Optimization

Modern machines are designed to reduce operational costs through:

• High-efficiency heating systems

• Servo-driven motion control

• Optimized air consumption

• Reduced material waste

These improvements result in lower energy consumption per bottle, making production more sustainable and cost-effective.

12. Maintenance and Operational Guidelines

Daily Maintenance

• Inspect air pressure levels

• Clean heating lamps

• Check mold condition

Weekly Maintenance

• Lubricate moving components

• Inspect electrical connections

Annual Maintenance

• Replace worn parts

• Calibrate sensors and control systems

13. Safety Features

• Emergency stop buttons

• Overload protection systems

• Automatic fault alarms

• Safety interlock mechanisms

These features ensure operator safety and machine reliability.

14. Industry Trends and Future Developments

The blow molding industry is evolving toward:

• Smart manufacturing systems

• AI-based quality control

• Fully electric machines

• Lightweight and eco-friendly bottle designs

These trends aim to improve efficiency, sustainability, and automation levels.

15. FAQ (Frequently Asked Questions)

Q1: What is the advantage of a one-to-two cavity system?

It offers flexibility between higher precision (single cavity) and higher output (dual cavity).

Q2: What industries use 15L blow molding machines?

Mainly beverage, food, chemical, and pharmaceutical industries.

Q3: What is the typical output?

Approximately 400–900 bottles per hour depending on configuration.

Q4: Is PET safe for food packaging?

Yes, PET is widely approved for food-grade applications.

16. Conclusion

The 15L One-to-Two Fully Automatic Blow Molding Machine for High Precision Bottle Forming represents a powerful and versatile solution for large-scale plastic bottle production. With its combination of:

• High precision

• Fully automated operation

• Flexible cavity configuration

• Energy-efficient performance

it meets the growing demands of modern manufacturing industries.

As businesses continue to seek higher productivity, lower costs, and better product quality, this type of machine remains a key investment for achieving competitive advantage in the global packaging market.