There is no clear and strict definition of roll film in the packaging industry, but it is just a conventional term in the industry. In simple terms, the rolled up packaging film is only one process less than the production of finished bags for the packaging production enterprises. Its material type is also the same as that of plastic packaging bags. The common ones are anti-fog film roll, OPP roll film, PE roll film, pet protective film, composite roll film, etc. Roll film is applied to automatic packaging machines, such as common bag shampoo and some wet wipes. The cost of using roll film packaging is relatively low, but it needs to be equipped with an automatic packaging machine. In addition, we can also see a roll film application in daily life. In small shops selling cup milk tea, porridge, etc., we can often see a sealing machine for on-site packaging. The sealing film used is roll film. The most common roll film packaging is bottle body packaging, and generally heat shrinkable roll film is used, such as some coke, mineral water, etc., especially for non cylindrical shaped bottles.
The main advantage of roll film application in the packaging industry is to save the cost of the whole packaging process. The roll film is applied to the automatic packaging machinery without any edge banding work in the packaging production enterprise. Only one-time edge banding operation in the production enterprise is required. Therefore, the packaging production enterprises only need to carry out printing operations, and the transportation costs are also reduced due to the supply of rolls. When the roll film appeared, the whole process of plastic packaging was simplified into three steps of printing, transportation and packaging, which greatly simplified the packaging process and reduced the cost of the whole industry. It is the first choice for small packaging.
1. Packaging with high barrier materials such as VMCPP and VMPET can prolong the shelf life of products.
2. Common material structure: Kop / CPP, Ta, PET / CPP, BOPP / VMCPP, BOPP / CPP, BOPP / LLDPE, inflatable membrane, etc.
3. PET / LLDPE composite film has the characteristics of good transparency and good oxygen resistance, so it is especially suitable for inflatable packaging of food such as bread and cake. At the same time, the composite film has good high temperature and low temperature resistance, and can also be used as a packaging bag for quick-frozen food and cooked food.
4. The main outstanding characteristic of BOPP / CPP composite film is high transparency. It is mainly used to pack some dry food and fast food, such as biscuits, dry Italian noodles, instant noodles, etc. However, its low-temperature and high-temperature resistance is poor, so it can not be used for packaging cold storage and high-temperature food.
5. The main outstanding characteristic of PET/AL/LLDPE composite film is high barrier performance. It is mainly used to pack some foods which are susceptible to moisture or deterioration such as coffee, yeast, dry fried fruits, medicine, spice powders etc.
Post time: Sep-27-2022