Basic knowledge of heat shrinkable tubes

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In the procurement of heat shrinkable pipes, procurement personnel often ask about the relevant technical parameters of heat shrinkable pipes. This article will introduce the two technical indicators of the complete shrinkage temperature and the working temperature of the heat shrinkable pipe.

1. Full shrinkage temperature

The complete shrinkage temperature of a heat shrinkable tube refers to the temperature at which the heat shrinkable tube can achieve complete shrinkage. For example, when a heat shrinkable tube is heated to 84 ℃, it does not immediately change back to its original shape like a rubber band. Shrinkage of heat shrinkable tubes is a gradual process. Heat it to the final shrinkage temperature, and if the temperature is 120 ℃, it can completely shrink.

2. Operating temperature

This temperature is an important parameter for heat shrinkable tubes. The operating temperature is sometimes referred to as the rated temperature, which is the temperature at which the casing can operate normally and continuously. The previous initial temperature and full shrinkage temperature refer to the temperature at which the processing heat shrinkable tube can shrink Φ Take heat shrinkable tube as an example.

When the temperature reaches 84 ℃, the tube begins to shrink, and then slowly shrinks to sizes 5 and 4. When the temperature reaches the final shrinkage temperature of 120 ℃, the pipe fully shrinks to 3, tightly wraps around the surface of the object, and then the processing and heating process ends. For example, the normal operating temperature of a heat shrinkable tube is - 55 ℃ to 125 ℃. We know that many times these products will be sold to different places. Some places are very cold and some places are very hot, so it has a certain range of applications. Once the temperature exceeds normal use, the service life of the heat shrinkable tube may not be guaranteed, and it may not work properly.

The working temperature refers to the temperature at which heat shrinkable tubes can provide insulation and protection. If the temperature exceeds this temperature, it may not function.

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