Core Extrusion Machines

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Introduction

Core Extrusion Machines are specialized industrial systems designed to produce continuous profiles, cores, or internal structural components used in a wide range of manufacturing sectors. These machines play a critical role in shaping materials such as plastics, rubber, and composite compounds into precise internal forms that support strength, insulation, or functionality in final products.

Unlike standard extrusion systems, core extrusion machines are optimized for producing internal cores with consistent density, dimensional accuracy, and surface quality. They are widely used in industries such as automotive, construction, cable manufacturing, and packaging, where internal structural integrity is essential.

Modern core extrusion systems are equipped with advanced temperature control, precision screw design, and automated feeding systems, ensuring stable output and high production efficiency. These machines can be customized according to material type, product geometry, and production capacity, making them highly versatile for both standard and specialized applications.

Specification

ParameterDescription
Machine TypeSingle Screw / Twin Screw Extruder
Screw Diameter45mm – 150mm
Production Capacity50 – 500 kg/h
Material CompatibilityPE, PVC, PP, Rubber, Composite Materials
Temperature Control Zones3 – 8 Zones
Drive SystemAC Motor with Frequency Inverter
Control SystemPLC + Touch Screen Interface
Cooling MethodAir Cooling / Water Cooling
Voltage220V / 380V / Customizable
Application Output TypeContinuous Core Profiles

Application

Core Extrusion Machines are widely used across multiple industries due to their ability to produce consistent internal structures. In the automotive industry, they are used to manufacture cable cores, sealing strips, and reinforcement elements that improve vehicle durability and safety.

In construction and infrastructure, these machines are essential for producing insulation cores, pipe cores, and structural fillers that enhance mechanical strength while reducing material usage. The cable and wire industry heavily relies on core extrusion for producing internal insulation layers that ensure electrical safety and performance.

Additionally, packaging and consumer goods industries use core extrusion technology to create lightweight yet strong internal supports, improving product stability during transportation and storage. The versatility of these machines allows manufacturers to adapt them for both standard mass production and customized solutions.

Advantages

  • High Precision Output: Ensures consistent core dimensions and uniform density throughout production.

  • Wide Material Compatibility: Supports a variety of thermoplastics and elastomers.

  • Energy Efficiency: Optimized heating and drive systems reduce energy consumption.

  • Flexible Configuration: Customizable screw design and die systems for different applications.

  • Stable Continuous Operation: Designed for long production cycles with minimal downtime.

  • Automation Integration: Compatible with modern PLC systems for intelligent control.

Materials and Structure

Core Extrusion Machines are constructed using high-strength steel frames to ensure durability and vibration resistance during operation. The screw and barrel are typically made from nitrided alloy steel or bimetallic materials, providing excellent wear resistance and long service life even under high-temperature and high-pressure conditions.

The extrusion system includes a precision-engineered screw that ensures uniform melting and mixing of raw materials. The die head is designed to produce accurate core shapes, while the cooling system stabilizes the extruded product to maintain dimensional consistency.

Additional components such as feeding systems, calibration units, and cutting devices can be integrated into the machine structure, forming a complete production line tailored to specific manufacturing requirements.

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ABOUT US
Jiangsu NewTopp Precision Machinery Co., Ltd.
Since its establishment in 2004, Jiangsu NewTopp Precision Machinery Co., Ltd. has specialized in the research, development, design, and manufacturing of high-end cable equipment. After more than a decade of development and continuous effort, our company has grown to encompass three manufacturing plants, an IoT technology company, and the Kunshan Newtopp branch.
Newtopp Precision is a National High-Tech Enterprise and has obtained ISO9001 quality certification and ISO14001 environmental management system certification. Covering 50 acres, the company boasts an independent R&D center, a finishing center, and a paint booth, integrating R&D, design, manufacturing, and sales. We are committed to providing customers with high-quality products and excellent service.
Our company's sustainable development along the way is inseparable from the support and trust of our customers. The large enterprises have long-term cooperation with many customers from all walks of life.

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