Researchers and engineers in the mid-20th century pioneered the concept of heat shrink tubing as they sought novel methods to protect and insulate electrical components. In the 1950s and 1960s, Raychem Corporation, founded by Paul Cook in 1957, played a pivotal role in inventing and patenting heat shrink technology. During this period, Raychem engineer Ray Borelli developed the first practical heat-shrinkable tubing.
https://axis-india.com/heat-shrink-tubing-the-analysis-you-need/
