Below is a list of Medical Plastic Bags manufacturers from West Chester, Pennsylvania. Medical plastic bags are used for a number of practical applications in hospitals, doctors’ offices, pharmacies, medical labs and other healthcare facilities for the storage or containment of objects and materials. PVC, or polyvinyl chloride is a common material choice for medical bags as it is durable and offers protection from chemicals, air pollutants and liquids. Polyethylene bags are also popular for similar reasons.