According to Vinyl By Design Website,
“Vinyl siding was first produced in the early 1960s through a process known as profile extrusion. This process was difficult to run at high speeds and to control the final shape, but in the late 1960s a process known as post forming improved vinyl siding manufacturing. In the 1970s and 1980s, the industry made numerous improvements in formulation which have allowed the product to be produced faster, weather better, resist impact, and allow a larger range of colors.
With these improvements, vinyl siding volume grew quickly during the late 1970s and surpassed the volume of aluminum siding in the early 1980s. The advantages of a lower cost material and easy installation have made vinyl siding the single largest residential siding material today.”
- “Historical Background”. Vinyl By Design. http://www.vinylbydesign.com/site/page.asp?TrackID=&VID=1&CID=79&DID=86