Molding determines the wall thickness of the PVC hose. PVC is a common, strong but lightweight plastic used in construction. Throughout the 1920s, attempts were made to use PVC copolymers that were easier to process than PVC. By 193 the first tubes made from a PVC copolymer were produced. Uni-Bell PVC Pipe Association (Published in Summer 19Edition of the Uni-Bell PVC Pipe News) Many of you have expressed a curiosity about the historical development of PVC pipe.
If no plasticizers are adde it is known as uPVC (unplasticized polyvinyl chloride) or rigid PVC. These early attempts were only marginally successful. Although product developers began to use PVC in a variety of ways in shoe heels, golf balls, and raincoats, to name just a few its application increased significantly during World War II.
By heating PVC, a machine called an extruder could be used to push it into hollow pipes.
Plastic pipe is a tubular section, or hollow cylinder, made of is usually, but not necessarily, of circular cross-section, used mainly to convey substances which can flowliquids and gases (fluids slurries, powders and masses of small solids).