We carry a selection of thermoplastic resins that are suitable for use with our benchtop injection molders, including:
- Low Density Polyethylene (LDPE)
- High Density Polyethylene (HDPE)
- Polypropylene (PP)
- Polystyrene (PS)
- High impact polystyrene (HIPS)
FAQ: Are other types of plastics suitable?
Yes. Our machines are capable of injecting other types of plastics (a/k/a resins). However, keep in mind, for every type of plastic (e.g. PE, PS, PP, PLA, TPE, etc.), there are often numerous GRADES (i.e. formula variations) on the market to choose from, which can vary greatly in their processing requirements. So, some grades of a particular “type” of plastic may inject well, and other grades not so well, or at all.
When evaluating if a particular resin is suitable, it’s important to make sure its required processing temperature is within the capability of the benchtop molder (i.e. 600 F max.). Another important consideration its melt flow rating (MFR), which is a numerical measurement (e.g. 20g/10 min. @ 2.16 Kg) of how easily it flows under pressure when molten. Grades that are formulated to have a high MFR usually work best in our hand-
Here’s an article by SpecialChem SA describing the technical aspects of melt flow rating (MFR) in great detail.