PVC heat shrinkable film has the following advantages

<p>The cost of <a href="https://www.plafilms.com/pvc-shrink-film" rel="noopener noreferrer" target="_blank">PVC heat shrinkable film</a> is moderate, and the shrinkage rate is more uniform, but the heating time is slightly longer. PVC (black) is slightly impurity, black, and PVC (blue) has better light transmittance. In production, different packaging materials can be selected according to cost and different design schemes. For example, for heat-shrinkable films with printed graphics, it is required to have a balanced heat shrinkage rate in the vertical and horizontal directions; for soft packaging, excessive heat shrinkage For cylindrical hard objects, a high transverse heat shrinkage rate is required to make the film close to the object. Also, because the actual heat shrinkage rate of heat shrinkable film is often determined by the size of the packaged object, in the actual application of <a href="https://www.plafilms.com/product" rel="noopener noreferrer" target="_blank">heat shrinkable film</a>, it is not necessary to achieve its larger heat shrinkage rate, and it can be adjusted according to actual requirements.</p><p>Nowadays, shrink film technology has been developed to use it for packaging of every product. The protective performance of pvc shrink film packaging: during the production process, the pvc shrink film is stretched directionally, and the shrink film is subjected to heat shrinkage during use. The heat shrinkability of the film has been applied as early as 1936, and rubber film was mainly used to shrink packaging perishable foods. In addition, shrink packaging is also used to make shrink labels and shrink bottle caps, so that containers that are not easy to print or have complex shapes can be labeled. And new application areas are constantly being developed.</p><p>Main application: This kind of packaging material can be used not only in the food industry, but also in the packaging of wine, sports goods, stationery, video products and handicrafts. Not only that, the application of this packaging material is very common in our lives, and this material is almost always used for packaging.</p><p>It has the following advantages:</p><p>(1) Good transparency, allowing customers to see the packaged goods directly, making it easy for customers to choose goods;</p><p>(2) Close to the shape of the product, it can be applied to the packaging of various shapes of goods, with a wide range of packaging contents;</p><p>(3) Good anti-theft and dustproof performance;</p><p>(4) A variety of commodities can be packed in a heat-shrinkable packaging bag to prevent individual small commodities from being lost, and it is also convenient for customers to carry;</p><p>(5) Different resins and formulas can be used to produce heat-shrinkable films with different mechanical strengths and functions. They can be used for inner packaging with lower strength and lower product weight, or for machinery that requires higher strength for containers. Transport packaging (outer packaging) for products, building materials, etc.</p><p>For different types of heat shrinkable films, there are corresponding differences in their production processes, and they have been developed to varying degrees in China. Taking the POF heat shrinkable film, which is currently growing rapidly in market demand, as an example, its production process has undergone the development process from single-bubble method to double-bubble method and 3-bubble method. POF heat shrinkable film used the single-bubble bidirectional stretching process earlier to extrude the polymer melt through a ring die and directly stretch it vertically and horizontally. However, the product made by this method has poor transparency and low shrinkage, so it has been seldom used in China. The double-bubble bidirectional stretching process is to extrude the polymer melt through the ring die, and then quickly cool it with chilled water to form a cylindrical thick film, and then heat it to the corresponding temperature by special infrared rays, and then perform longitudinal/transverse simultaneously Stretch. The product made by this method has good transparency and high shrinkage rate, and has become the most popular POF heat shrinkable film production process in China. The 3-bubble biaxial stretching process is a relatively newly developed POF heat shrinkable film production process in China. In addition to the advantages of double-bubble products, the products produced have better dimensional stability and longer storage time.</p><p>The effect of shrink film is getting more and more beautiful, and the functionality is getting stronger. With the improvement of the quality of life, the diversification of packaging film, the requirements for shrink film are also higher and higher. The main function of the sales and transportation of this product is to stabilize, cover and protect the product. The shrink film needs to have high puncture resistance, good shrinkage and corresponding shrinkage stress. During the shrinking process, the film cannot produce holes. Since shrink film is often used outdoors, it is necessary to add UV anti-ultraviolet agent. It has high flexibility, not easy to break, strong blast resistance, strong impact resistance, strong tear resistance, strong tensile force, and can replace box packaging. The shrinkage rate is large, and the items can be tightly wrapped after heat shrinking. If the PE straight-through bag (opening at both ends of the bag) is heat-shrinked, the two ends of the opening can lift the items, which can bear a weight of 15KG, which is convenient for handling. It has good transparency and 80% light transmittance. It can display products and promote products invisibly. At the same time, it also reduces distribution errors in the logistics link. Moisture-proof, waterproof and dust-proof, it can not only achieve the packaging effect, but also beautiful and protect the product</p>