POF, PE and PVC heat shrinkable films can be seen everywhere in life and are widely used. Application scope of PVC heat shrinkable film: it is often used in the market of convenient food and beverage, especially the shrinkable label is its main application field. Application scope of PE heat shrinkable film: beverage, mineral water and other large packaging equipment and articles. Application scope of POF heat shrinkable film: used in automotive products, plastic products, food, cosmetics and other products. It is not difficult to find that the application fields of the three shrinkable films intersect. How to select the heat shrinkable film? What is the difference between POF and PE and PVC heat shrinkable films? With these questions, let's look at the following.
1. Cold resistance and other physical properties: POF heat shrinkable film has excellent cold resistance, is not hard and brittle at - 50 ℃ and is not easy to crack, and can be used for frozen food packaging. After shrinkable packaging, the package is stored at - 50 ℃ - 95 ℃ for a long time, which is stable. It has static electricity and anti fog treatment, is not easy to pollute dust, and can keep the product clean and bright. PE heat shrinkable film has excellent cold resistance, and is not hard and brittle in winter or after freezing, Therefore, it is not easy to crack during transportation. With electrostatic elimination treatment, it is not easy to get dust, and can keep the product clean. PVC heat shrinkable film has poor cold resistance, and embrittlement will occur in winter or after freezing, so it is easy to crack during transportation. The longer the shrinkable package is, the tighter the shrinkage will be, and the package will be deformed. Without electrostatic elimination treatment, it is easy to get dust, making the product pollution fuzzy
2. Other physical properties: POF heat shrinkable film is thin and tough, with uniform thickness, good moisture resistance and soft texture. It has high tensile strength, high tear strength and adjustable shrinkage. Due to the existence of LLDPE shrink film, it has better kneading resistance. PE heat shrinkable film is thick and tough, with uniform thickness, good moisture resistance and soft texture. The tear strength is lower than that of POF heat shrinkable film, but much higher than that of PVC, Poor adjustability of shrinkage rate. The kneading resistance is not as good as POF. PVC heat shrinkable film is thick and brittle, uneven thickness, poor moisture resistance, hard and brittle texture. It has low strength, low shrinkage rate and poor kneading resistance
3. Safety after shrink packaging with POF shrink film, the four corners of the seal are soft and will not cut hands, and it is also resistant to rubbing. After shrink packaging with PE shrink film, the four corners of the seal are soft and will not cut hands. After packaging with PVC shrink film, the four corners of the seal are hard and sharp and easy to cut
4. The specific gravity of POF heat shrinkable film is 0.92, the thickness * is less than 0.01mm, and the actual unit cost is lower. The specific gravity of PE heat shrinkable film is 0.92, the thickness * is less than 0.03, and the actual unit cost is higher. The specific gravity of PVC heat shrinkable film is 1.4, the thickness * is less than 0.02mm, and the actual unit cost is higher
Now, when you are facing difficulties in choosing POF, PE and PVC heat shrinkable films, do you have a choice direction and tendency? I hope this passage can help you.
