Injection molded parts made of PS
Injecting PS ( polystyrene)
Polystyrene may be an uncommon name to many engineers but had served a lot of purpose to various items . And thus it that can found in encasings like DVD and CD cases, housings for smoke detectors and plastic utensils set. Also in injection molding, polystyrene is a valuable material. This article offers information in getting to know more of polystyrene.
Polystyrene is derived from monomer styrene material, which is a petrochemical of the liquid state. It had served a lot of uses to several commonly use plastic products. Such items that are made of polystyrene are: foam cups, packing tools, plastic models as well as housings for smoke detectors. Although polystyrene provides people with a lot of items, it has its fair share of controversies, mostly involving the eco-system as PS had a very slow biodegradation.
On the other hand, polystyrene plays an important role in injection molding as it can be a great material in making molded plastic parts for different purposes. Injecting polystyrene provides high – quality yet budget – friendly parts for tools useful in different industries such as offices, food processing and storage, construction and consumer products.
It may be cheap but injecting polystyrene does not only lighten up the budget but it guarantees good parts as well. Although noted to be a low – value commodity plastic, the usual outcome of the parts are of good rigidity, resistant to moisture, easy to mold and low chemical and impact resistance. Therefore, the result is twice as the value.
A butadiene modified polystyrene resin that slowly improves the resistance upon impact is known as high impact polystyrene which can be possibly produced through: thin – and – thick walled molding, structural foam molding as well as standard injection molding.
Injecting PS into parts provides a lot of advantages as it has high impact resistance quality as well as with flame retardant. With its high heat resistance, finish products consisting PS are safe to be in contact with food and beverages. Also, the parts are guaranteed to have a good flow as well as offer good Processability. Injecting PS also makes the parts more expandable and easier to mold.
However, injection molding polystyrene in a mold requires a little bit of carefulness in a way that it is highly flammable thus caution is required when dealing with the substance, but there are grades made available for it. Our injection mold maker China can do the job.
Another disadvantage of injecting PS is that, it has poor resistance to solvent and can be incompatible with many chemicals. Aside from that, there are cases of PS being brittle as well as prone to environment cracking and subject to stress. Poor thermal stability is also one of the disadvantages of injecting PS.
Just like all other materials, there are pros and cons however injecting PS and making life easier for the people seemed to have outweighed the cons in using the material. Because of the low amount and great products it provides, injecting PS is a common way to provide commodities that are important in the daily lives. Proper knowledge on how to handle PS is however a bonus.
Another advantage of Polystyrene is that it is dirt cheap.
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To design a mold that is been able to manufacturer high precision injection molded parts is an art or craftsmanship combined with years of engineerign experience , only done by a few injection mold maker . It requires super fine materials, tool making by EDM and cnc machining.
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Injection moulding is considered as the best and most effective process to create plastic products in large series or quantities. ( If the desired quantities are less than, 1000 pieces than room temperature vacuum casting is an option, or other soft tooling techniques.) injection moulding is a very fast and efficient mass manufacturing process and is used to manufacture huge amounts of identical objects ranging from hollow plastic cosmetic containers to precision and sterile medical components.