Die head for two color bottle with sequential coextrusion

Die Head for Two Color Bottle with Sequential Coextrusion (Suntech)

Upgrade your extrusion blow molding capabilities with our advanced die head for two color bottle production. Designed for sequential coextrusion, this system enables precise layering and color switching, allowing manufacturers to produce visually striking bottles with consistent quality.

Whether you’re in the packaging, personal care, or household goods industry, this die head offers high performance for small-volume, dual-color applications.

High-Precision Design for Sequential Coextrusion

This die head for two color bottle is engineered with First In / First Out (FIFO) accumulator technology, making it ideal for small-volume production while maintaining high consistency. The sequential coextrusion process allows for the controlled layering of different colored resins in a single extrusion cycle.

This setup is perfect for brands seeking unique aesthetics and functional multi-layer bottle designs—without compromising production speed or material performance.

Key Features and Advantages

1. FIFO Accumulator System

The integrated FIFO accumulator ensures that the first resin into the system is also the first to exit, preserving material freshness and reducing color contamination. This system is particularly important in dual-color applications where clear separation and layer integrity are crucial.

2. Dual Extruders for Color Management

• Main Extruder: 60 mm diameter

• Secondary Extruder: 30 mm diameter

The primary extruder delivers the base layer, while the secondary extruder controls the secondary color or accent. This configuration enables precise management of each layer’s thickness and transition timing.

3. Throttle Valves for Each Layer and Cavity

Fine-tune your production with individual throttles assigned to every layer and cavity. This allows for consistent output and color accuracy, even across multiple molds or bottle sizes.

Flexible Die Gap Control and Hydraulic Features

Direct Die Gap Adjustment

Unlike traditional designs that require worm gear mechanisms, this die head for two color bottle offers direct die gap adjustment. Operators can make quick and accurate changes to the die opening, resulting in faster setup times and improved production flexibility.

Hydraulic Wall Thickness Control (WTC)

The hydraulic WTC system enables real-time wall thickness adjustments during production. This ensures even material distribution and optimal performance across different bottle shapes and sizes.

Compact Center Distance and Versatile Material Use

100 mm Center Distance

The 100 mm center distance allows this die head to fit efficiently into compact or multi-cavity extrusion systems. It provides flexibility in designing molds for a range of bottle dimensions while keeping machine footprint minimal.

Material Compatibility

This system is optimized for HDPE but can also run with PP. However, expect approximately 20% lower output when using polypropylene due to its different flow properties. The extruder screws used can remain the same for both materials, offering convenience and cost savings.

Applications of the Die Head for Two Color Bottle

This die head is ideal for manufacturers producing:

• Dual-color shampoo or body wash bottles

• Layered food packaging containers

• Household cleaner bottles with brand-specific colors

• Decorative or functionally layered plastic products

By integrating this die head for two color bottle into your extrusion system, you can expand your product offerings and elevate your brand’s market presence.

Technical Specifications

• Accumulator Type: FIFO

• Main Extruder: 60 mm

• Small Extruder: 30 mm

• Die Gap Control: Direct (no worm gear)

• Wall Thickness Control: Hydraulic (WTC)

• Center Distance: 100 mm

• Material Compatibility: HDPE preferred, PP with reduced output

Boost Your Production with Reliable Two-Color Technology

This die head for two color bottle offers an advanced solution for brands and manufacturers looking to enhance product design and production control. Its thoughtful engineering ensures reduced downtime, consistent output, and high-quality results with minimal operator effort.

Contact us today for pricing, technical details, or integration support. Our team is ready to help you take your extrusion capabilities to the next level.