No one can give definitive answers when it comes to selecting an injection molding resin for their project, because only you know which resin works for your unique situation and needs. But have no fear: there are thousands of similar resins out there with various properties – you could always come back.
Before selecting any resin material, the primary factor should be its function and physical environment of use. You need to think carefully about which injection molding materials can withstand temperature variations, humidity fluctuations, chemical exposure or ultraviolet light exposure as well as strength durability flexibility color cost considerations of materials used. Come discover how advanced injection molding technology can enhance performance of plastic materials!
As an aid to narrow your search, here are the characteristics of some of the more widely-used injection molding resins we utilize in most of the parts we produce.
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Nylon (PA)
Nylon, commonly referred to by its chemical name PA (polyamide), is often utilized in mechanical parts that need to withstand rugged mechanical use such as bushings, gears and bearings for automotive use. As well as being strong but lightweight compared with metal equivalents, nylon also helps lower weight and production costs compared with them. Though nylon may absorb water easily despite being an industrial strength plastic; marine applications should therefore use something with better water absorption capabilities instead.
acrylic fiber
We use acrylic to produce transparent parts such as windows, display screens, and various lighting equipment. Due to its high tensile strength as well as weather resistance and scratch resistance, it is often used as a substitute for glass. It absorbs dyes and colorants well, so you can create many aesthetic effects. In addition to optical and transparent properties, acrylic is odorless and tasteless, and does not contain bisphenol A (BPA). BPA is a harmful organic compound, so plastic injection molding resins such as acrylic are considered safe for food storage.
Polycarbonate (PC)
Polycarbonate is another transparent injection molding resin with excellent optical qualities and extreme durability, offering precise dimensional control due to a predictable shrinkage rate and uniform shrinkage rate during molding. If we require something stronger than acrylic, polycarbonate provides stronger material choices than its rival. If optically transparent plastic parts are desired however, high grade stainless steel must be polished extensively; otherwise the desired grade would need more expensive mold materials – something your resin
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Polyoxymethylene (POM)
Polyoxymethylene (POM) is an engineering thermoplastic resin commonly used for manufacturing mechanical and automotive parts typically composed of metal. POM’s strength lies in its rigidity; thus making gears, fa choice also plays a part in.
steners, tool handles and ball bearings from this engineering thermoplastic extremely strong and resilient. Although POM resists solvents like alcohol, gasoline detergents, motor oil as well as hydrochloric and nitric acids very effectively.
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Polystyrene (PS)
When it comes to injection molding resins, there are two commonly-used varieties of polystyrene: High Impact Polystyrene (HIPS) and General Purpose Polystyrene (GPPS). HIPS is opaque while GPPS is transparent – often found as hard shell toolbox and power tool bodies made out of HIPS. As with anything, however, PS can present both advantages and drawbacks; on one hand it offers resilience while on another it means being less environmentally-friendly than alternative materials used as toolbox or power tool bodies are constructed out of HIPS for toolbox and power tool bodies made out of PS. As is usually the case however with other materials compared with alternatives; although HIPS may hold more resilience but environmental friendlier options can also exist that make PS more environmentally responsible than HIPS/GPPS can take much abuse during manufacturing of toolbox/power tool bodies made of HIPS material compared with its counterpart.
Acrylonitrile Butadiene Styrene (ABS)
Acrylonitrile Butadiene Styrene (ABS) resin is an opaque thermoplastic polymer commonly found among engineering plastics. ABS offers many advantages; among them being toughness, good dimensional stability, impact resistance and scratch resistance as well as its low melting temperature which facilitates molding processes. ABS resin has become one of the more frequently utilized engineering plastics as it serves many useful functions; including being tough enough for phone adapters, keyboard keys and plastic shields around electrical outlets among many others – particularly due to being good insulators which do not conduct electricity nor emit smoke upon fire – essential considerations when working on electronic equipment designs!
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Polypropylene (PP)
Polypropylene (PP), an inject molding thermoplastic material commonly found in food storage and packaging industries, prevents chemicals from coming in contact with food during storage and handling. Washable in hot water without degradation and high chemical and moisture resistance properties make PP an excellent material choice. Furthermore, its impact resistance, elasticity, toughness and flexibility enable designers to easily recycle it; its flexibility even enables it to create flexible hinges which can bend multiple times without breaking.
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Polyethylene (PE)
Polyethylene (PE) is an inexpensive thermoplastic molding material with excellent chemical resistance, elasticity and electrical insulation properties. While not particularly strong or rigid, PE can often be found everywhere from milk bottles and medicine/detergent bottles to plastic bags and trash cans – even toys! As nontoxic material it’s widely used injection molding resin used for making toys which withstands rigorous play time without cracking under stress.
TPU (Thermoplastic polyurethane)
TPU (Thermoplastic polyurethane) is an economical material with soft yet resilient characteristics and superior tear strength; making it suitable for creating parts requiring rubber properties such as elasticity. Although more costly than alternative resins, TPU excels at protecting wire and cable sheaths – improving grip in hand products thanks to this material’s inherent softness.
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TPR (thermoplastic rubber)
TPR (thermoplastic rubber) resin is a high-performance combination of plastic and rubber used for injection molding processes, boasting excellent chemical, weather, and impact strength properties. As such, TPR finds use in numerous areas like fluid dispensers, hoses conduits and conduits where different liquids must pass.
Plastic rubber (Thermoplastic Elastomer (TPE)) can be found in medical catheters, suspension bushings and headphone cables as an eco-friendly and recyclable material. You’ll often hear people refer to thermoplastic rubber as TPE material when discussing its recycling potential.