In today’s rapidly evolving global packaging industry, small-capacity plastic containers have become an indispensable part of modern life and industrial production. From pharmaceutical vials and cosmetic bottles to food packaging and daily chemical containers, the demand for high-quality, high-precision, and cost-effective small plastic containers continues to grow exponentially. For manufacturers looking to optimize their production lines for 0.1L to 2L plastic containers, selecting the right blow molding equipment is critical to achieving consistent product quality, maximizing production efficiency, and minimizing operational costs. The DHS-2L Blow Molding Machine, developed by TINCOO Packaging Technology, emerges as a game-changing solution specifically engineered to meet these exacting requirements.

Product Overview

The DHS-2L blow molding machine is a state-of-the-art single-station extrusion blow molding machine designed for the production of high-quality plastic containers with medium output capacity. Equipped with a versatile die head system that supports from one to six fold configurations, this machine offers exceptional flexibility to adapt to diverse production needs. It is widely recognized as the ideal production equipment for a broad spectrum of industries including petroleum, cosmetics, chemicals, pharmaceuticals, food, toys, and automotive parts manufacturing.
Built with precision engineering and cutting-edge technology, the DHS-2L machine integrates advanced components sourced from leading international manufacturers. The clamping system features a high-precision single-station linear guide that ensures smooth and accurate mold movement. The extrusion system utilizes a hard gear reducer and inverter imported from Japan, delivering reliable performance and energy efficiency. The die head system adopts a central-incoming extrusion die made of special steel, combined with imported hydraulic valves and seal parts with proportional control for precise material flow management. The entire machine is controlled by a sophisticated PLC and human-machine interface imported from Japan, featuring an automatic temperature control module and high-quality imported electrical components.

Core Components and Technical Features

1. Die Head System:The die head is the heart of any blow molding machine, and the DHS-2L features a vertical first-in first-out (FIFO) structure that ensures uniform material distribution and eliminates dead spots where plastic can degrade. This innovative design guarantees consistent wall thickness across all produced containers, a critical factor in maintaining product quality and reducing material waste. The die head is constructed from special alloy steel that undergoes rigorous heat treatment processes, providing exceptional durability and resistance to wear and corrosion.
2. Extruder Unit:The extruder unit of the DHS-2L is engineered for maximum efficiency and reliability. It features a 50 mm diameter screw with a length-to-diameter ratio of 25:1, optimized for processing PE, PP, and other common plastic materials. The screw is driven by a converter electric motor and a hard gear surface reducer, providing infinite speed variation and precise control over the extrusion process.
3. Clamping Unit:The clamping unit is a hydraulic fixed bi-directional clamping system designed for exceptional stability and precision. It delivers a clamping force of 40 kN, sufficient for producing containers up to 2 liters in capacity. The platen opening stroke is adjustable from 158 to 410 mm, accommodating a wide range of mold sizes. The platen size measures 290 × 320 mm, with a maximum mold size of 320 × 320 mm and a mold thickness range of 160-240 mm.
4. Hydraulic System:The hydraulic system of the DHS-2L utilizes imported hydraulic units and proportional control technology, ensuring smooth and responsive operation. The system is designed for energy efficiency and low noise, contributing to a safer and more comfortable working environment. The oil pump driving power is 5.5 kW, and the system operates at an air pressure of 0.6 MPa with an air consumption of 0.4 m³ per minute.
5. Electrical System:The electrical system is built around a Siemens PLC, a world-renowned brand known for its reliability and performance. All electrical components are sourced from leading international manufacturers, ensuring long-term durability and minimal downtime. The system features a user-friendly human-machine interface (HMI) that allows operators to easily monitor and control all aspects of the production process. The automatic temperature control module maintains precise temperature levels throughout the machine, ensuring consistent product quality.

19 Key Advantages of the DHS-2L Blow Molding Machine

The DHS-2L blow molding machine stands out from competitors with its comprehensive set of innovative features and design improvements. These advantages translate directly into higher productivity, better product quality, lower operational costs, and increased profitability for manufacturers.

1. Adjustable Platen Movement:The machine platen can be moved both down and up, providing greater flexibility in mold setup and product removal. This feature simplifies the mold changing process and reduces downtime between production runs.
2. Reinforced Machine Platen:The platen has been significantly strengthened to withstand higher clamping forces and prevent deformation during operation. This ensures consistent mold alignment and extends the lifespan of both the machine and the molds.
3. Organized Tube and Line Layout:All tubes and lines are located in good order, making maintenance and troubleshooting much easier. This organized layout also reduces the risk of leaks and improves overall machine reliability.
4. Box-Shaped Mold-Moving Stand:The mold-moving stand is constructed in a box shape, which provides exceptional structural rigidity and stability. This design ensures smooth and precise mold movement, eliminating vibration and distortion that could affect product quality.
5. Strengthened Tie Bars:The tie bars have been strengthened to handle higher loads and provide additional stability during the clamping process. This prevents bending and ensures uniform pressure distribution across the mold surface.
6. Joint Bearings on Cylinders:Both the mold-closing and mold-moving cylinders are equipped with joint bearings, which help protect the cylinders from side loads and extend their service life. This design also improves the accuracy of cylinder movement.
7. Innovative Blow Construction:The DHS-2L features a new blow construction that can blow vertically and even from certain angles. This allows for more uniform inflation of the plastic parison and better control over wall thickness distribution
8. Integrated Exhaust System:The blow construction is connected to an exhausting air pipe, which allows hot air to be quickly removed from the mold cavity. This significantly reduces product cooling time, increasing overall production speed.
9. Automatic Deflashing:The machine is equipped with an automatic deflashing system that removes excess plastic from the containers during production. This eliminates the need for manual trimming, saving labor costs and improving product consistency.
10. Integrated Waste Recycling System:The machine can be connected to a conveyor that carries slitter edge to a crusher for reuse. This closed-loop recycling system minimizes material waste and reduces raw material costs.
11. Direct Filling Line Integration:The machine can be connected to a conveyor that carries finished bottles directly to a filling machine. This seamless integration streamlines the production process and eliminates the need for intermediate handling.
12. Robot Arm Compatibility:The DHS-2L can be equipped with a robot arm to automatically take out finished bottles from the mold. This increases production speed, reduces labor requirements, and improves workplace safety.
13. Circle-Type Cutter Option:For foil-sealing type bottles, the machine can be equipped with a circle-type cutter to trim the bottle necks with high precision. This ensures a perfect seal and prevents leaks.
14. Professionally Designed Mold Platen:The mold platen has been professionally designed in both construction and shape to maintain maximum stability during operation. This ensures consistent product quality even during long production runs.
15. New Safety Machine Door:The machine features a new and safe machine door design with interlock switches that prevent operation when the door is open. This provides enhanced operator safety and complies with international safety standards.
16. Reduction Valve for Mold Movement:A reduction valve is installed in the mold-moving parts, allowing for faster and more stable mold movement. This reduces cycle time and increases overall production efficiency.
17. Manual Adjuster for Precision Alignment:The machine is equipped with a manual adjuster that allows operators to easily adjust the position of the mold and blow pin. This makes setup and fine-tuning quick and convenient, reducing downtime.
18. High-Rigidity Screw Stand:The screw stand is constructed with high rigidity to prevent vibration and ensure stable extrusion. This contributes to consistent material flow and uniform product quality.
19. Multi-Directional Screw Adjustment:The screw can be adjusted forward, backward, leftward, and rightward, allowing for precise alignment with the die head. This ensures optimal material flow and minimizes waste.