Differences and advantages of POF heat shrinkable film and other shrinkable films

1. Cost

The specific gravity of POF is 0.92, the thickness is as thin as 0.012mm, and the actual unit cost is lower. The specific gravity of PE is 0.92, and the thickness is as thin as 0.03 or more, and the actual unit cost is higher. The specific gravity of PVC is 1.4, and the thickness is as thin as 0.02mm, and the actual unit cost is higher.

2. Physical properties

POF is thin and tough, with uniform thickness, good moisture resistance and soft texture. It has high tensile strength, high tear resistance, and adjustable shrinkage. Because of the existence of LLDPE, it has better rub resistance. PE is thick and tough, with uniform thickness and good moisture resistance. , soft texture. Tear resistance is lower than POF, but much higher than PVC, poor shrinkage adjustability. Kneading resistance is not as good as POF. PVC is thick and brittle, uneven thickness, poor moisture resistance, hard and brittle texture. Low strength, shrinkage Low rate, poor rub resistance.

3. Physical properties such as cold resistance

POF has excellent cold resistance, it is not hard or brittle at -50°C, and it is not easy to break. It can be used for frozen food packaging. After shrink packaging, it can be stored for a long time at -50°C-95°C, and it 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 has excellent cold resistance. It will not harden or become brittle in winter or after freezing, so it is not easy to break during transportation. With static electricity elimination treatment, it is not easy to be dusty, and can keep the product clean. PVC The cold resistance is extremely poor, and it will become brittle in winter or after freezing, so it is easy to break during transportation. The longer the shrink packaging is, the tighter the shrinkage will be, and the packaged object will be deformed. Without static electricity elimination treatment, it is easy to be contaminated with dust, making the product contaminated and blurred.

4. Processing performance

POF process does not produce moisture and will not stick to the sealing rod, easy maintenance and operation. High toughness, smoothness and rubbing resistance make it suitable for automatic packaging in high-speed production lines. PE process does not produce moisture and does not stick to the seal On the rod, easy maintenance and operation. High toughness, low rubbing, can be used for automatic packaging of high-speed production lines. PVC processing will produce volatile matter, which is easy to cause mechanical damage, and is easy to stick to the sealing rod, which is inconvenient to operate and difficult to maintain. 

5. Security

After POF shrink-wrapping, the four corners of the seal are soft, which will not cut human hands, and are also resistant to rubbing. After PE shrink-wrapping, the four corners of the seal are soft and will not cut human hands. After PVC shrink-wrapping, the four corners of the seal are hard and sharp, easy to cut bleed.

6. Environmental hygiene

POF is non-toxic, does not produce toxic odor during processing, and complies with US FDA and USDA standards. PE is non-toxic, does not produce toxic gas during processing, and complies with US FDA and USDA standards. PVC is toxic, and processing will produce odor and toxic gas, which are gradually banned.