Get To Know About Heat Shrink Tube

What Is Heat Shrink?

Heat Shrink Tube is basically a convenient tool for those who work with wires as well as cables. The basic purpose of tubing gun is to shrink to fit whatever it is applied to after being subjected to heat. For repair and ordinary maintenance, it is widely used by people. You come into contact with these tubing guns when use electronic items like:

  • Cell phones
  • MP3 Players
  • iPods



History Behind Heat Shrink

In the late 1950s, Raychem Corporation was the first person who developed the tubing. At the initial stage, the Rachel was known for two main products: lightweight aircraft cable, and heat-shrinkable tubing. Paul Cook, who was the Raychem chemical engineer, founder, made use of radiation chemistry.

What Is Shrink Tubing Made Of?

A wide range of thermoplastics are used to make shrink tubing such as

  • Polyolefin
  • Polyvinyl chloride
  • Neoprene
  • Polytetrafluoroethylene
  • Fluorinated ethylene propylene
  • Kynar

Apart from these polymers, the conductive polymer thick film is also added to heat shrink that provides Electrical Connection between the two or more conductive objects. These objects are joined by the tubing without any need to solder them.

Usage Of Heat Shrink

  • To seal the water and dust out of cable splices.
  • For providing a barrier between cables and corrosive chemicals.
  • In order to insulate cables and wired against extreme heat in aircraft, etc.
  • In color coding
  • To make long-lasting labels for network patch cords
  • For bringing improvement in the look of cables in computer case mods.

What Makes Shrinkable To Heat Shrink?

Most of the times, you may have noticed that most plastics won’t just shrink down if they’re heated. So, the question here is that what makes heat shrink tubing different? The answer is cross-linking that is a process of exposing a polymer to radiation.

The basic purpose behind this process is to create covalent bonds between that polymer’s atom.