The difference between Heat Shrinkable Double-walled Tube and LV Heat Shrinkable Thin Wall Tube

Heat Shrinkable Double-walled Tube and LV Heat Shrinkable Thin Wall Tube belong to heat shrinkable pipe, both have the function of heating and shrinking, the difference between the two is only the morphological structure and the main application scenarios. From the name we can well understand, Heat Shrinkable Thin Wall Tube refers to the structure of only one layer, is the common heat shrinkable tubing; Heat Shrinkable Double-walled Tube are double-walled and have a layer of hot glue inside. In addition to the different layers, the differences between Heat Shrinkable Double-walled Tube and LV Heat Shrinkable Thin Wall Tube include:

1.Different production technology

LV Heat Shrinkable Thin Wall Tube is the polymer or polymer alloy through extrusion to get tubular products, after irradiation (or chemical) crosslinking heating expansion, cooling shaped with a certain size of tubular products; The outer layer of the Heat Shrinkable Double-walled Tube is made of high quality crosslinked polyolefin material and the inner layer is made of hot melt adhesive.

2.Different scope of application

The Heat Shrinkable Double-walled Tube has the functions of insulation, sealing, waterproof, anti-corrosion, anti-leakage and so on. It is mainly used for wiring waterproof places and protecting the cable from corrosion and water seepage. LV Heat Shrinkable Thin Wall Tube waterproof performance is not excellent, but it has good flame retardant performance, excellent electrical insulation performance, aging resistance, softer than double-wall pipe, widely used in the insulation protection of communication electronic lines.

3.Different storage conditions

LV Heat Shrinkable Thin Wall Tube without hot melt adhesive, its storage environment requirements are low, can be placed for a long time; The hot melt adhesive in the Heat Shrinkable Double-walled Tube has requirements, and should not be placed for a long time, otherwise the internal hot melt adhesive may fail, affecting the normal use of the heat shrinkable tube.

Heat Shrinkable Double-walled Tube is mainly used in places with higher waterproof requirements, so can Heat Shrinkable Double-walled Tube really waterproof?

There is a layer of hot melt adhesive inside the Heat Shrinkable Double-walled Tube. When the Heat Shrinkable Double-walled Tube is heated, the hot melt adhesive inside becomes a fluid at high temperature to fill the gap between the heat shrink tube and the protected cable. After heating, the hot melt adhesive solidifies to form a waterproof layer, which can prevent water and steam from entering, so as to play a waterproof and moisture-proof effect.

Therefore, in some cable wiring need waterproof occasions, often used Heat Shrinkable Double-walled Tube.