What kind of plastic is smma?

Polyacrylic acid resin

Medical supplies, cosmetic packaging, stationery, decorative gifts, high-grade daily necessities, etc.)

Good thermal stability, can use up to 100% recycled materials. It is lighter in specific gravity and can save up to 20% of the material used to produce the same amount of products than other transparent plastics. 

No drying required (in most cases), which reduces electricity costs and improves productivity. Faster molding cycle times, up to 50% shorter, resulting in better machine availability. Lower injection molding process temperatures, up to 65 degrees Celsius (150 degrees Fahrenheit), resulting in lower electricity costs.  Ease of injection molding process reduces operator training, high product yield, and effective control of production costs. The refractive index is higher than that of PMMA, resulting in excellent crystallinity of the finished product.

Good chemical resistance, especially good alcohol resistance. High fluidity, especially suitable for thick and large volume parts. Less shrinkage after molding, can reduce reprocessing. Transparent color, easy to match color, less masterbatch usage for color matching. The use of universal injection molding machines and gongs reduces equipment investment. Finished products can be used for vacuum plating, printing and other decorations. 

Not corrosive or abrasive, thus reducing machine wear. Lower clamping force required, up to 20% lower, reduces processing costs. 

Products are sterilized by gamma radiation or ethylene oxide to maintain good color and physical properties.

The product maintains good color and physical properties after gamma-ray or ethylene oxide sterilization.