![]() AcetalĪcetal is most commonly chosen for its physical properties. Acrylic also resists holding stains or odors, making it a common material for food and beverage applications. There are a range of additional materials that are more uniquely suited for the solid products produced with injection molding, such as: AcrylicĪcrylic is well-regarded for a combination of its glass-like appearance and resistance to wear, scratching, and UV exposure. Many of the same materials used in blow molding are also good choices for injection molding, including ABS, HDPE, PS, PU, Santoprene, PP, and LDPE. As such, K-Resin is another great choice for packaging, medical equipment, and toys. K-Resin SBC is an opaque resin with similar benefits to Kostrate, including impact resistance and rigidity. ![]() K-Resin Styrene-Butadiene Copolymer (K-Resin SBC) For similar reasons, it is also a common choice for plastic components used in toys. Kostrate features high impact and temperature resistances, so it has found a home in many food storage and beverage packaging applications. This makes Santoprene a flexible and durable choice for applications such as household electrical appliances, medical equipment, and electronics. Santoprene is a thermoplastic that behaves somewhat like a rubber. It is rigid and available in temperature-resistant varieties, which makes it a popular choice for difficult working environments. PU is easy to mold and useful for a versatile range of products used in industrial facilities or marine environments. While very cost-effective, PS is notably brittle, so it will likely be a poor choice when durability is a concern. PS is sometimes better recognized as the chief component of Styrofoam, but in its solid form it is a rigid plastic useful for cases, food containers, and laboratory equipment. The main difference is that PP is stiffer, less dense, and resistant to very high temperatures. PP is another widely-used, versatile molding plastic that resembles HDPE in many ways. LDPE and HDPE do share some properties, such as being chemically inert and easy to mold. Low-Density Polyethylene (LDPE)Ĭompared to HDPE, LDPE is softer and more flexible, making it an excellent choice for plastic bags and flexible packaging such as squeeze bottles. HDPE is easily molded and suitable for both consumer goods and industrial applications, including a wide range of bottles and containers. HDPE’s desirable physical properties-including chemical resistance, temperature resistance, and a high strength-to-density ratio-make it one of the most popular blow molding materials. ![]() However, ABS lacks the superior chemical resistance of other common blow molding plastics. Click to Enlarge Acrylonitrile Butadiene Styrene (ABS)ĪBS is well-suited for housings, containers, and other household goods.
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