The heat shrinkable tube has irreversible characteristics after heat shrinkage. After being heated and shrunk on the product, it cannot expand again. Therefore, if you want to remove the heat shrinkable tube that has shrunk on the product or cable, you can only remove the heat shrinkable tube. It can only be removed by scratching and destroying it. After the heat shrinkable tube is heat-shrunk, as the inner diameter becomes smaller, the wall thickness becomes thicker, and it will also harden after cooling. It is still difficult to easily cut the heat shrinkable tube at room temperature. If you are not careful, the package will be scratched. Covering products or cables is actually very simple, with two main steps.

Step 1: Heat the surface of the heat shrink tube to soften it. Heat shrink tubing is produced using PE polyolefin. After cooling, it can still soften as long as it reaches the heat shrink temperature again.

Step 2: After heating and softening, quickly use a utility knife to cut it open before cooling, and then peel off the heat shrink tube and product along the knife marks.

    However, some users say that they can be cut and peeled off without heating and softening. Conventional single-wall heat shrink tubing does not require heating because the wall thickness is thin. If the thick-walled heat-shrinkable tube is not heated and softened, the blade will not be able to cut it in at all, and excessive force will damage the product. Therefore, the editor of the heat-shrinkable tube manufacturer Duwai recommends heating it in advance to soften it when taking out the heat-shrinkable tube. Cut and peel again.

    It is still very difficult to remove the heat-shrinkable tube without scratching or damaging it after shrinking. There are also higher requirements for the products to be protected, such as a smooth and delicate surface, because the heat-shrinkable tube has radial shrinkage. force, so if you want to completely remove the heat shrink tube, you need to apply lubricating oil on the surface of the product, and then shrink the heat shrink tube. Finally, it is possible to remove the heat shrink tube without damaging the heat shrink tube.

Why do you need to remove the shrunk heat shrink tubing? The main reasons are as follows:

    1. During the product development sample stage, the insulation and other properties of the heat shrink tube are tested. After removing the heat shrink tube, observe whether the covered product is intact and can meet the insulation protection function.

    2. For reworked products, if the heat shrink tube shrinks unevenly, is uneven or wrinkled, or fails the test, the heat shrink tube needs to be removed and then put on the heat shrink tube again for shrinkage.

    3. Process requirements. Since the surface requirements of a certain part of the product are high or subsequent processes may cause damage to the part, which may cause scratches or damage during the production process, a layer of heat shrink tubing is put on the surface for protection. The heat shrink tube needs to be removed for subsequent use.