In many electronic and electrical industries, products are often used in harsh environments, such as dusty or very humid places. In order to increase the service life of the product, a layer of sheath must be used to wrap the product. Another situation is that parts such as wires are used in water for a long time. If waterproof measures are not used, there will be great hidden dangers to the aging of the wires and their safety.

   As a manufacturer of heat shrinkable tubes, how could we not have such waterproof heat shrinkable tubes? Let me introduce to you what waterproof heat shrinkable tubes are. Waterproof heat shrinkable tube is actually a glued heat shrinkable tube. The inner wall of the heat shrinkable tube has a layer of hot melt glue. Put the glued heat shrinkable tube on the wire. After heating and shrinkage, the hot melt adhesive on the inner wall will fill the heat shrinkable tube and the wire. gap to achieve the effect of preventing water from entering the interior. Next, follow the footsteps of editor Fu Xinyi to learn the correct use of waterproof heat shrink tubing, so as to achieve twice the result with half the effort.

1. Select the size of the glued heat-shrinkable tube according to the diameter of the wire. The shrinkage ratio of the glued heat-shrinkable tube is generally 3:1, which means that a φ30mm glued heat-shrinkable tube can be reduced to 10mm after complete shrinkage. Therefore, the fault tolerance rate of this heat shrinkable tube is very large.

2. Place the glued heat shrink tube on the location that needs protection.

3. Heating and shrinking. During the shrinking process, heating must be done sequentially from one end to the other to expel the internal air. Never shrink the two ends first and then the middle. Due to the presence of hot melt adhesive, after the two ends are shrunk and sealed, the air in the middle will not be discharged. The final shrinkage effect is not good, resulting in bubbles and uneven surface of the heat shrink tube. It cannot achieve the sealing and waterproof effect, and its service life will not be long. Therefore, the shrinkage process is an important step that determines the quality of waterproofing, and special attention must be paid to it.

   The use of waterproof heat shrinkable tubes is similar to that of ordinary heat shrinkable tubes, but there is a big gap in the sealing and waterproofing function. The sealing effect of waterproof heat shrinkable tubes can prevent the interior from being disturbed by water vapor, dust, and the external climate. Influence.