In fact, the shrinkage ratio of heat shrinkable tube is very simple. The shrinkage ratio is equal to the pore diameter before shrinkage/the pore diameter after shrinkage. 6 times heat shrinkable tube means that the pore diameter can be reduced by 6 times, such as 19.1mm 6 times heat shrinkable tube. The final complete shrinkage can reduce to With an inner diameter of 3.2mm, the shrinkage ratio is currently the highest among heat shrinkable tubes.

    The production of heat shrinkable tubes with a 6-fold high shrinkage ratio also requires very high raw materials. If recycled materials are used, they cannot support such a high shrinkage ratio, and stripe cracking will easily occur. The requirements for production equipment are also relatively high. The deflection rate of the embryo tube during extrusion needs to be well controlled. Therefore, the production of high-quality 6x heat shrinkable tubes requires certain hardware support.

    6x heat shrinkable tubes are often used to cover products with a large span of outer dimensions. The inner wall is equipped with hot melt adhesive, which has mechanical shock absorption and other functions. 6x heat shrinkable tubes are wall thickness types with thicker walls and are mechanically wear-resistant. The anti-corrosion performance is also very good.

    There are still many users who have doubts about whether 6x shrinkage is reliable. As the editor of a heat shrinkable tube manufacturer, I can responsibly inform all users that 6x heat shrinkable tubes can actually achieve a 6x shrinkage ratio.