Precision Double-Layer Laboratory Blown Film Machine LB-20-C-AB

Qingdao Leibo Technology Co., Ltd.

I. Product Overview

LB-20-C-AB is a high-performance dual-layer co-extrusion blown film equipment specifically designed for laboratory research and development, representing the advanced level of current laboratory blown film technology. This equipment adopts a dual φ20mm high-precision extrusion system, with each system equipped with a 30:1 optimized length-to-diameter ratio screw, supporting independent speed regulation from 0-100 rpm. It can simultaneously process co-extrusion and compounding of various polymer materials such as PE, PBAT, PAV, EVA, and more.

The equipment is equipped with a PLC control system and a 12-channel temperature human-machine interface, achieving precise temperature control from room temperature to 250°C (±1°C). Driven by dual 1500W high-power servo motors, the output can reach 5-10 kg/h, meeting the demands of higher-level R&D and small-batch production. With a layflat width of 240 mm and a roller surface width of 250 mm, it can produce dual-layer composite films with a thickness of 0.02-0.1 mm, and the line speed is adjustable from 0-10 m/min.

The LB-20-C-AB is designed with a rated power of 10 kW and features a compact structure measuring 1660×860×1950 mm, with a total weight of 300 kg. This equipment is particularly suitable for the R&D, process validation, and small-batch production of functional composite films. It serves as an ideal platform for research institutes, university laboratories, and corporate R&D centers to develop new materials and upgrade products, providing comprehensive technical support for the research and development of multi-layer composite films.

II. Main Technical Parameters

III. Working Principle

The LB-20-C-AB achieves dual-layer co-extrusion blown film experiments for polymer materials through the following methods:

1. Dual-Screw Extrusion System
   Utilizes dual φ20 mm high-precision screws, with each system equipped with a 30:1 L/D ratio screw, ensuring stable and uniform material conveying and melting during extrusion.

   • Supports independent speed regulation, allowing separate control of the feeding speed for each layer of material, enabling precise co-extrusion ratio control.

2. Temperature Control System

   • Employs a 12-channel independent temperature control system, allowing independent temperature control for each screw, die head, and blown film head.
   • The temperature control range covers room temperature to 250°C, with an accuracy of ±1°C, ensuring uniform and stable material processing temperatures.

3. PLC + Touch Screen Control System

   • Integrates a PLC control system with a touch screen operation interface, enabling parameter setting, operation monitoring, data recording, and report generation.
   • Supports real-time data acquisition, generating pressure curves, temperature curves, output curves, etc., facilitating experimental analysis and process optimization.

4. Dual Servo Motor Drive

   • Utilizes dual 1500W servo motors, providing powerful driving force to ensure stable operation under high loads.
   • Servo motors feature high-precision control and fast response, enhancing the overall performance of the equipment.

5. Blown Film System

   • Layflat width up to 240 mm and roller surface width of 250 mm, suitable for producing films of various specifications.
   • Capable of producing dual-layer composite films with a thickness of 0.02-0.1 mm, meeting the requirements for high-precision film production.
   • Line speed range of 0-10 m/min, adjustable according to experimental needs.

IV. Core Functions and Features

1. High-Precision Dual-Layer Co-Extrusion

• Supports dual-layer co-extrusion, enabling the compounding of different materials, such as PE/EVA, PE/PBAT, etc.
• Independent speed regulation for each system allows for precise co-extrusion ratio control, suitable for the development of functional composite films.

2. High-Precision Temperature Control System

• 12-channel independent temperature control system ensures stable temperature for each layer of material.
• Temperature control accuracy of ±1°C, suitable for processing temperature-sensitive materials.

3. High-Performance Drive System

• Utilizes dual 1500W servo motors, providing powerful driving force to ensure stable operation under high loads.
• Servo motors feature high-precision control and fast response, enhancing the overall performance of the equipment.

4. Intelligent Control System

• Integrates PLC + touch screen control system, offering easy operation and a user-friendly interface.
• Supports real-time data acquisition, curve display, and report generation, facilitating experimental data recording and analysis.

5. Compact Structural Design

• Machine dimensions of 1660×860×1950 mm and a weight of 300 kg, featuring a compact structure that is easy to integrate into laboratory layouts.
• Suitable for environments with limited space, such as university laboratories, research institutes, and corporate R&D centers.

6. High Output and Efficiency

• Output of up to 5-10 kg/h, meeting the demands of small-batch production.
• Designed with a rated power of 10 kW, offering low energy consumption and high operational efficiency.

V. Application Scenarios

The LB-20-C-AB dual-layer co-extrusion laboratory blown film machine is widely used in the following fields:

VI. Advantages and Competitiveness

Official Website: http://www.leibo.tech