Shanghai Lechun Biotechnology Co., Ltd.--Small Precision Multi-layer Co-extrusion Casting Pilot Line Case Introduction

I. Basic information of the customer

1. Shanghai Lechun Biotechnology Co., Ltd. is a high-tech enterprise focusing on the research, development, production and sales of disposable consumables and equipment in the biopharmaceutical industry.

2. Product development requirements

Through the production of seven-layer co-extrusion cast film, we provide customers with film products with specific performance and specifications to meet their application needs in packaging, electronics, medical and other fields.

Product structure required by customers

II. Equipment development process:

1. Pre-design verification:

- Material testing: Conduct performance tests on raw materials provided or specified by customers to understand their physical properties, thermal stability, fluidity, etc., and provide a basis for design.

- Simulation analysis: Use professional software to simulate and analyze the casting process to predict the film performance, extrusion stability, etc. under different design schemes in order to optimize the design.

2. Design idea process:

- Determine the structure: Determine the function and material composition of each layer of the seven-layer structure according to the performance requirements of the film and the characteristics of the raw materials. For example, the outer layer may need to have good wear resistance and printability, and the middle layer may be used to provide strength and barrier properties.

- Extrusion system design: Design a suitable extruder combination, spatial position layout, easy operation and maintenance. Ensure that different materials can be extruded evenly under precise temperature and pressure control. Consider factors such as screw design, heating method, metering accuracy, etc.

- Casting die design: Design an efficient casting die to ensure that the melt can be evenly distributed over the entire width to form a film with uniform thickness. Consider the structure of the die, flow channel design, temperature control, etc.

- Casting machine system design: Design the casting roller so that the film can be quickly cooled, shaped and rolled up to ensure dimensional stability and performance.

3. Debug the molding process

III. Equipment technical indicators

1. Equipment layout diagram. This equipment is equipped with 7 extruders A\B\C\D\E\F\G, cast film machine and winder, electric control box, mold temperature unit

2. Mould structure diagram

3. Equipment diagram

4. Technical parameters and configuration

Table 4-1 Host technical parameters

IV. Achievements

1. Meet customer product needs: Through the production of seven-layer co-extrusion cast film, we provide customers with film products with specific performance and specifications to meet their application needs in packaging, electronics, medical and other fields.

2. Improve production efficiency: The seven-layer co-extrusion cast film machine has efficient production capacity and can quickly produce high-quality films to improve customer production efficiency.

3. Improve product quality: Through precise design and control, we produce film products with uniform thickness and stable performance to improve the quality and market competitiveness of customer products.

4. Reduce production costs: The seven-layer co-extrusion technology can reduce the waste of raw materials and reduce production costs. At the same time, efficient production equipment can also reduce energy consumption and labor costs.