DR-20L Semi-Automatic Blow Molding Machine

The DR-20L blow molding machine is specifically designed for producing 5-gallon bottles and 25-liter wide-mouth bottles. For 5-gallon bottles, the normal output can reach 90-120 per hour.

Features

Employing an advanced microcomputer control system, ensuring stable performance;

Automatic preform feeding via conveyor;

Using infrared lamps for heating, providing strong penetration, preforms rotate and are heated simultaneously via track revolution, resulting in uniform, rapid, and reliable heating;

The width and height of the lamps and reflectors within the heating zone are adjustable to suit preforms of different structures, and an automatic temperature control device ensures constant temperature in the drying tunnel;

Each mechanical action has a safety self-locking device; if a process malfunctions, the program automatically switches to a safe state;

Each action is driven by an oil pump, offering advantages such as zero pollution and low noise;

The air circuit design divides the actions and blowing into three parts to meet the needs of bottle blowing and actions. Different gas pressure requirements;

High-pressure and double-arc arm connecting rod clamping provides strong clamping force;

Manual and fully automatic operation modes are available;

Safe and reliable, the unique valve position design makes the gas path clearly visible;

Bottles are protected from contamination, the cooling system achieves ideal cooling effect, installation and start-up are simple, and the bottle scrap rate is less than 0.2%;

The entire production process is automated, offering advantages such as low investment, high efficiency, convenient operation, simple maintenance, and safety.

Bottle Type

Parameters

1. Introduction

The DR-20L Semi-Automatic Blow Molding Machine with Stable Performance and Easy Operation is a highly efficient and cost-effective solution designed for manufacturing large-capacity PET bottles. Widely used in industries such as bottled water, food packaging, chemicals, and household products, this machine offers a balance between automation, flexibility, and affordability.

As global demand for 5-gallon (20L) PET bottles continues to grow, manufacturers are increasingly adopting semi-automatic systems to achieve consistent output quality while maintaining lower capital investment. The DR-20L model stands out due to its reliable operation, user-friendly interface, and stable production performance, making it ideal for small to medium-sized enterprises.

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2. What Is a DR-20L Semi-Automatic Blow Molding Machine?

A DR-20L semi-automatic blow molding machine is a type of stretch blow molding equipment designed to produce PET bottles ranging from 10 liters to 20 liters, including standard 5-gallon water containers.

Definition

It is a machine that:

• Converts PET preforms into bottles using heat and compressed air

• Requires partial manual operation (such as preform loading)

• Automates key processes like heating, stretching, and blowing

Key Characteristics

3. Working Principle

The DR-20L machine uses a two-step stretch blow molding process, ensuring high-quality output and efficient production.

Process Steps

1. Preform Injection (External Process)
   PET preforms are manufactured using injection molding machines.

2. Preform Heating
   Preforms are heated evenly using infrared lamps to reach forming temperature.

3. Manual Placement
   The operator places the heated preform into the mold.

4. Stretching
   A stretch rod elongates the preform to align molecular structure.

5. High-Pressure Blowing
   Compressed air expands the preform into the mold shape.

6. Cooling
   The formed bottle is cooled for structural stability.

7. Ejection
   Finished bottles are removed for further processing.

Benefits of the Process

• Uniform wall thickness

• High clarity and transparency

• Strong mechanical strength

• Reduced defect rates

4. Key Features

4.1 Stable Performance

• Consistent heating system ensures uniform results

• Reliable mechanical structure minimizes downtime

4.2 Easy Operation

• User-friendly control panel

• Simple workflow for operators

• Minimal training required

4.3 Wide Bottle Compatibility

• Suitable for 10L–20L PET bottles

• Compatible with various neck sizes and shapes

4.4 Infrared Heating Technology

• Even temperature distribution

• Improved bottle quality and reduced waste

4.5 Strong Clamping System

• Designed for large molds

• Ensures precise bottle shaping

4.6 Energy Efficiency

• Optimized power consumption

• Reduced compressed air usage

5. Advantages of DR-20L Semi-Automatic Blow Molding Machine

6. Technical Specifications

6.1 General Machine Parameters

6.2 Bottle Specifications

6.3 Power System

6.4 Air System Requirements

6.5 Machine Dimensions

7. Applications

7.1 Bottled Water Industry

• 5-gallon water bottles

• Mineral water containers

7.2 Food Industry

• Edible oil packaging

• Liquid food containers

7.3 Chemical Industry

• Detergent bottles

• Industrial liquid containers

7.4 Pharmaceutical Industry

• Bulk liquid storage

7.5 Household and Commercial Use

• Reusable water containers

• Large storage bottles

8. PET Material Benefits

9. Semi-Automatic vs Fully Automatic Machines

10. Production Line Configuration

A complete production setup includes:

11. Operation Guidelines

Best Practices

• Maintain consistent heating temperature

• Use high-quality PET preforms

• Monitor air pressure levels

• Ensure proper mold alignment

Common Issues and Solutions

12. Maintenance Guide

Daily Maintenance

• Clean heating lamps

• Check air pressure

• Inspect molds

Periodic Maintenance

• Replace worn parts

• Lubricate moving components

• Calibrate control system

13. Industry Trends

The market for large PET bottle production machines is expanding due to:

• Rising demand for bottled drinking water

• Increased focus on sustainable packaging

• Growth in bulk liquid transportation

• Replacement of traditional materials with PET

14. Why Choose DR-20L Semi-Automatic Blow Molding Machine?

The DR-20L machine is ideal for businesses that require:

• Reliable and stable performance

• Easy operation with minimal training

• Cost-effective production solutions

• Flexibility in bottle design

It offers a perfect balance between efficiency, affordability, and scalability, making it a preferred choice in the PET Bottle Manufacturing industry.

15. Conclusion

The DR-20L Semi-Automatic Blow Molding Machine with Stable Performance and Easy Operation is a versatile and efficient solution for producing large PET bottles. Its combination of advanced heating technology, strong mechanical design, and user-friendly operation ensures consistent product quality and operational efficiency.

For manufacturers looking to enter or expand in the 5-gallon bottle production market, this machine provides a reliable and scalable solution that meets modern industry demands.