The heat shrink time and temperature are different for different kinds.
PVC and PET type, the minimum shrinkage temperature 35 ℃, but this temperature is very weak shrinkage, so these products require storage temperature below 30 ℃. The minimum temperature of rapid shrinkage is 90℃ or more;
PO heat shrinkable tube shrinkage temperature, 90℃ for ultra-thin, 110℃ for regular.
PE and PVDF's, the shrinkage temperature reaches 125 ℃ and 150 ℃ or 175 ℃, respectively. PTFE material shrinkage temperature to more than 200 ℃.
PVC heat shrinkable tubing and PET heat shrinkable tubing comparison:
PVC heat shrinkable tubing
PVC heat shrinkable tubing has a special function of shrinkage in the event of heat, can be contracted by heating above 98 ℃, easy to use. The products are divided into two series according to the temperature resistance of 85℃ and 105℃, specifications Φ2-Φ200, the products comply with the EU RoHS environmental protection directive. Used for electrolytic capacitors and inductors, the products have good performance of high temperature resistance, no secondary shrinkage, and can be printed instead. Used for various rechargeable batteries, single and combination packaging, and on behalf of the design, printing patterns, and can be cut on behalf of customers. Used for all kinds of curtain rods, shower curtain rods, hanging rods, mop rods, broom handles, tool rods, telescopic rods, garden tools, spreader rods and other tubular items of outer wrapping. It can also be used for marking and insulating outer wrapping of copper rows, connectors and wire harnesses of low-voltage indoor bus bars. High efficiency, low equipment investment, small comprehensive cost. It is used for the wrapping of lamps and LED pins, and the wrapping of guitars and packaging bottle mouths, and is a new generation of packaging materials. Whether it is for civil, automotive or military use, it is the top choice.
PET heat shrinkable tubing
PET heat shrinkable tubing (polyester heat shrinkable tubing) from the heat resistance, electrical insulation properties, mechanical properties are greatly more than pvc heat shrinkable tubing, more importantly, PET heat shrinkable tubing is non-toxic, easy to recycle, the human body and the environment will not have a poisonous effect, and more in line with the requirements of environmental protection.
The environmental performance of PET heat shrinkable tubing is higher than the EU RoHs Directive standard, and can reach Sony SS-00259 environmental standards. It does not contain cadmium (Cd), lead (Pb), mercury (Hg), hexavalent chromium (CrVI), polybrominated biphenyls (PBBs), polybrominated diphenyl ethers (PBBEs/PBDEs), polychlorinated biphenyls (PCBs), polychlorinated terphenyls (PCTs), polychlorinated naphthalenes (PCN) and other banned substances of the 1st level of environmental management, and it is the best choice for the outer wrapping of electrolytic capacitors, inductors and other electronic components, high-grade rechargeable batteries, toys and medical devices, and can fully meet the export requirements.