Pay attention to blowing hot air evenly, and don't always blow it in one place to prevent the heat shrinkable film from burning. In addition, if the heat-shrinkable film does not need to be sealed, blow the unsealed edge first, then blow other parts, and try to put the sealing line at the bottom or inconspicuous position, so that the packaging effect will be good.
Heat shrinkable film is used in the sales and transportation of various products, and its main function is to stabilize, cover and protect the products. Shrinkage film must have high puncture resistance, good shrinkage and certain shrinkage stress. In the process of shrinkage, the film will not produce holes. Because shrink films are often suitable for outdoor use, it is necessary to add UV anti-ultraviolet agents.
Introduction of polyethylene heat shrinkable film
Widely used in the overall packaging of wine, canned food, mineral water, various beverages, fabrics and other products. The product has good flexibility, strong impact resistance and tear resistance, is not easy to be damaged, is not afraid of moisture, and has large shrinkage. PVC shrink film, adding ingredients to enhance its heat resistance, toughness and ductility. The top layer of this surface film is paint, the main component in the middle is PVC, and the bottom layer is adhesive.
There are three series of heat shrinkable films: 85℃, 105℃ and 125℃, all of which have passed SGS environmental protection test and conform to the EU RoHs directive. The surface of pvc heat shrinkable sleeve can also be printed with exquisite words or patterns, which plays a role in marking and anti-counterfeiting products.
UL-certified pe radiation cross-linked heat shrinkable tube has the advantages of high temperature resistance, high mechanical strength and good chemical resistance, and is widely used as insulation material for cables, connectors, transformers and inductance coils, and can also be used as anti-corrosion coating for oil, water, gas and chemical pipelines.