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Filling domestic gaps, domestic optical-grade pmma degassing extruder unit delivered

High-performance resins and applications 2025-10-09 14:34:14

Recently, Sichuan Zhongwang Technology Co., Ltd. delivered an 80,000-ton/year optical-grade PMMA devolatilization extrusion unit as a tribute to the National Day. The delivery of this optical-grade PMMA unit not only fills the gap in the domestic PMMA industry but also marks a rapid advance of domestic extrusion units towards high-end optical-grade products (optical-grade PMMA, photovoltaic-grade POE, etc.).

Sichuan Zhongwang Technology Co., Ltd. is a technology-oriented enterprise formed by a group of technicians who were among the first in China to manufacture and apply twin-screw extruders. Over nearly 30 years of manufacturing and applying parallel co-rotating twin-screw extruders, the company has accumulated a wealth of valuable experience. Through its own exploration and by referencing advanced foreign technologies, it has overcome bottlenecks in extruder transmission technology. As a result, Zhongwang Technology's extruder products boast advantages such as high torque, high efficiency, low energy consumption, high cost-effectiveness, and low comprehensive production costs. Its main technical indicators far exceed those of domestic industry peers. Since the start of commercial production, as one of the leaders in the domestic extruder field, it has consistently maintained a leading position in domestic technology and kept its technological level in sync with top foreign extruder equipment manufacturers.

Since the 1990s, Sichuan Zhongwang equipment has been applied in various fields, primarily involving rubber and plastics, petrochemicals, chemicals, sheet membranes, and composite materials. Based on the different requirements of customers for output and process flow, we customize models suitable for clients to produce higher quality products! Through continuous research and practice, the torque has increased from 8.0 Nm/cm³ in the 1990s to the current 18 Nm/cm³. The 18 Nm/cm³ Pro model achieves a minimum single-side screw clearance of 0.1mm, enabling precision extrusion. The core technology has reached the world's top level.

Innovative Achievements

Sichuan Zhongwang Technology's Strength and Breakthrough in Large Extrusion Granulation Units

Innovative Achievements:

1. Continuously develop new functional structures and components.

The continuous optimization of the structural parameters of mixing components can meet the mixing requirements of more resin grades.

High torque gear transmission technology, high reliability, and uniform design technology are more suitable for processing operations of high-viscosity materials and large-scale requirements.

Key component materials and process technology.

Advantages:

Durability, stability, and efficiency comparable to top international brands.

The number of non-scheduled parking incidents in a year is less than 5 times, and the frequency has been achieved to be comparable to Japan's JSW and Germany's Coperion.

Sichuan Zhongwang Technology's Strength and Breakthrough in Polymer Post-Processing and Devolatilization Reaction Unit

Innovative Achievements:

Twin-screw devolatilization extruder

2. Multi-stage vacuum control

Advanced stripping with dispersed and distributed volatilization.

The residual solvent of 5% to 40% can be reduced to 300 ppm.

Transmittance ≥ 93%, Yellowness Index ≤ 0

Application scope: POE, EPDM, FDPE, POM, PMMA, POM, PPC and other metallocene solution polymerized polyolefin products.

Design capacity: 50,000 to 200,000 tons per year per production line.

Representative performance:

A single-line extrusion granulation unit with an annual production capacity of kiloton-level POE devolatilization.

Single-line production unit with a capacity of 50,000 tons per year for PPC devolatilization and granulation.

Single-line PMMA devolatilization pelletizing unit with an annual output of 80,000 tons.

Single-line annual production of 200,000 tons solution-process FDPE (octene copolymer) devolatilization extrusion pelletizing unit

Sichuan Zhongwang Strength and Breakthrough in Localization of Spare Parts for Imported Extrusion Granulation Units

Innovative Achievements:

1. Original replacement of barrels for large extrusion granulation units of German and Japanese systems, enhancing wear resistance and corrosion resistance repair, and optimization redesign and manufacturing.

German and Japanese large extrusion granulator screw elements and mandrels are replaced with original samples and optimized for redesign and manufacturing.

3. Upgrade of the inner surface hardness of the cylinder (using advanced laser welding repair technology originating from German Yasen University of Technology, the cylinder's

The service life can be increased by more than five times.

The latest process extrusion granulator unit's old barrel is repaired and upgraded by efficiently repairing the worn inner hole of the barrel using laser alloy welding.

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Filling domestic gaps, domestic optical-grade pmma degassing extruder unit delivered

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