Injection Molding of Polyvinyl Chloride (PVC)
Polyvinyl Chloride (PVC) is the third most widely used thermoplastic behind Polyethylene and Polypropylene. A large majority of the PVC is used for construction goods because it is inexpensive, durable and easy to use. It also can be manufactured in both hard and softer durometers which enables it to be very versatile.
Now that we see that PVC is used widely in the manufacturing world, there are some dangers that arise when injection molding PVC. An important feature of PVC is the inclusion of chlorine. Now the inclusion of chlorine poses a new type of threat that many plastics do not have…emitting a harmful corrosive toxic gas. For this reason, many injection molding companies will turn down opportunities because of the extra risk associated with PVC. The processing of PVC requires stainless steel injection molds if you want any type of longevity out of them molds. In addition, the molds will require a higher level of tooling maintenance than molds used to for processing standard plastics.
This is the short answer to why some injection molding companies are reluctant to run a PVC application.
To learn more on Polyvinyl Chloride (PVC) you can visit Wikipedia at: http://en.wikipedia.org/wiki/Pvc
You can also visit us at Quickparts to discuss your application: http://www.quickparts.com
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