Below is a list of Blowmolding manufacturers from St. Charles, Missouri. Blowmolding is the process of using compressed air and molten plastic to create hollow, thin-walled containers. Plastic blow molding is a well-suited method for forming hollow plastic parts, and thousands of applications benefit from the versatility of the process. Blow molders manufacture many different products, including toys, blow molded cases for transport and storage, sports equipment, garbage cans, planters, and most commonly, blow molded containers like plastic bottles for industries such as beverage, petrochemical and automotive.