Shrink Film Classification

Shrink film is used for sales and transportation of various products. Its main function is to stabilize, cover and protect the product. The shrink film must have high puncture resistance, good shrinkage and certain shrinkage stress. During the shrinkage process, the film shall not produce holes. Because the shrink film is often suitable for outdoor use, UV anti ultraviolet agent needs to be added. Including OPS/PE/PVC/POF/PET shrink film

1) PE heat shrinkable film is widely applied to the whole package of liquor, pop can, mineral water, various beverages, cloth and other products. The product has good flexibility, strong impact and tear resistance, is not easy to damage, is not afraid of moisture, and has a large shrinkage rate;

2) PVC film [1] has the characteristics of high transparency, good gloss and high shrinkage;

3) POF has the characteristics of high surface gloss, good toughness, high tear resistance, uniform heat shrinkage, and is suitable for automatic high-speed packaging. It is the replacement of traditional PVC heat shrinkable film. POF is the meaning of heat shrinkable film. POF is full name of multilayer co extruded polyolefin heat shrinkable film. It is made of linear low density polyethylene (LLDPE) as the middle layer, and co polypropylene (pp) as the inner and outer layers, plasticized and extruded by three extruders, and then processed by special processes such as die forming, bubble blowing, etc.

4) OPS shrink film (oriented polystyrene) heat shrinkable film is a new packaging material for pasting ops heat shrinkable film body, which meets the environmental requirements. OPS heat shrinkable film has high strength, large rigidity, stable shape, and good gloss and transparency. Easy processing, easy coloring, good printing performance, and high printing resolution. It is completely a material progress for trademarks that constantly pursue exquisite printing. Because this high shrinkage and strength of OPS film can closely fit with containers of different shapes, it can not only print beautiful patterns, but also meet the use of new packaging containers with different shapes. This non-toxic, tasteless, grease resistant film, which meets the food hygiene standards, allows designers to use eye-catching colors to achieve 360 ° label design, giving full play to creativity and imagination, This makes the design of drinks and other goods more vivid in the use of labels, highlights the image on the shelf, and produces an unexpected container effect.

5) Features of PET heat shrinkable polyester film: it is stable at room temperature, shrinks when heated (above glass transition temperature), and shrinks more than 70% in one direction. The advantages of heat shrinkable polyester film packaging are: ① It is transparent and fits the body, reflecting the image of the product. ② Tight package, good dispersion resistance. ③ Rain proof, moisture-proof and mildew proof. ④ No resiliency, with certain anti-counterfeiting function. Heat shrinkable polyester film is often used in convenient food, beverage market, electronic appliances, metal products, especially in the most important application field of shrink label. Because with the rapid development of PET beverage bottles, such as Coke, Sprite, all kinds of fruit juice and other beverage bottles need PET heat shrinkable film as a supporting heat seal label. They both belong to the polyester category, are environmentally friendly materials, and are easy to recycle.

In addition to being used as a shrink label, heat shrinkable polyester film is also used on the outer packaging of daily commodities. Because it can not only protect the packaged goods from impact, rain, moisture and rust, but also make the products win users with beautiful printed outer packaging. At the same time, it can well display the good image of the manufacturer. Nowadays, more and more packaging manufacturers use printed shrink film to replace the traditional transparent film. Because the printing shrink film can improve the appearance of the product, is conducive to product advertising, and can make a deep impression on the brand in the minds of consumers.