The difference between cast acrylic and extruded acrylic
available: In StockQuick Overview: Zhejiang Yifang New Materials, with 20 years of production and processing, international standards, and a daily output of 70 tons.
The difference between cast acrylic and extruded acrylic
Keyword Theme Introduction
In the acrylic sheet market, cast acrylic and extruded acrylic are two mainstream products, with significant differences in production processes, performance characteristics, and application fields. This article will delve into the differences between these two types of boards to help you better understand and choose the product that suits your needs.
Product Features
Cast acrylic: Made by casting liquid MMA (methyl methacrylate) monomer, the molecular structure is compact, with extremely high transparency (light transmittance can reach over 98%), excellent weather resistance, impact resistance, and chemical corrosion resistance. Its surface is smooth without crystal points, with high edge transparency, suitable for high-precision machining and complex modeling.
Extruded acrylic: formed by high-temperature extrusion of solid PMMA particles, with lower molecular weight and slightly weaker mechanical properties, but good flexibility and easy bending and thermoforming processing. Its surface finish is relatively high, but the corners may turn yellow and there may be crystal dots or sand holes, making it suitable for large-scale standardized production.
Material usage
Cast acrylic: widely used in high-end advertising signs, building models, aquariums, bathroom facilities, optical instruments and other fields, with high requirements for transparency, weather resistance and processing accuracy.
Extruded acrylic: commonly used in outdoor billboards, light boxes, display stands, decorative materials, etc., which are cost sensitive and require high dimensional stability.
production process
Casting process: Liquid MMA is injected into the mold, heated and polymerized in a water bath and drying room, cooled and solidified, and then demolded to form. This process is complex and has a long production cycle, but it can produce thick plates with various specifications.
Extrusion process: Solid PMMA particles are heated and melted, extruded into sheets through molds, and then completed through processes such as calendering, film coating, and cutting. This process has a high degree of automation, high production efficiency, and is suitable for large-scale production.
Common specifications and sizes
Cast acrylic: with a wide thickness range (1.5mm-50mm), commonly used sizes include 1220 × 1830mm, 1220 × 2440mm, 2050 × 3050mm, etc., supporting customization.
Extruded acrylic: with a relatively thin thickness (generally not exceeding 15mm), common sizes include 1220 × 2440mm, etc., and the specifications are relatively fixed.
Frequently Asked Questions
Casting acrylic: high production cost and expensive price; During the processing, burrs are prone to occur and require subsequent grinding and polishing; High precision is required for molds.
Extruded acrylic: low molecular density, weak impact resistance and chemical resistance; Low surface hardness and easy to scratch; The carving and fine processing effects are poor.
| product type | pet、ps、acrylic、acrylic mirror、pvc sheet,acrylic sheet |
| thickness | 0.35-300mm |
| Styles | 1220*2440,1220*1830,500*900,50*60,960*1950,700*900/Customization of various specifications and sizes |
| delivery time | 5-8day |
| manufacture | Yifang |
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