Stretch film production has the characteristics of simple operation, wide application range, good sealing, high transparency, low cost, high grade, etc., and is suitable for packaging small and medium batch products. However, there is another kind of stretch film that can be recycled and reused-black stretch film. Black stretch film and general stretch film are extruded by extruder. It has high tensile strength, puncture resistance and impact resistance. It has outstanding retraction memory and self-adhesiveness. Through the selection of different resins , Can make the goods tightly wrapped into a whole to avoid pollution and damage during transportation. In addition, when the black stretched film is heated to the glass transition temperature, it can be guaranteed to be relatively stable at room temperature. The heat generation is shortened, and the direction of heat shortening is in the same direction, and the heat shortening rate can reach more than 70%. Thermally shortened polyester film is often used in convenience foods, beverage stores, electronic appliances, and metal products. In particular, shortening labels is its main application field. Due to the rapid development of beverage bottles, beverage bottles such as cola, sprite, and various juices all require stretch films to be matched with heat-seal labels, which are also classified as polyester, environmentally friendly materials, and easy to recycle for recycling. It can be said that black stretch film has the following advantages compared with general colorless stretch film: First, it is conducive to packaging valuables and privacy items, and the packaging can be well concealed during storage and transportation; Second, the use of universal recycling equipment can reduce environmental pollution, recycle black stretched film, and save packaging costs; Third, the thickness of the pre-stretched black stretched film is significantly thinner, resulting in a reduction in the total transportation volume during transportation, thereby reducing transportation energy consumption and transportation vehicle exhaust emissions, or indirectly or directly reducing air pollution . Fourth, because the black stretched film is processed by pre-stretching technology, it is easy to use and has high work efficiency. It can be said that the length of each roll of black stretch film under the same weight is more than twice the length of each roll of ordinary stretch film, which can reduce the frequency of film roll replacement during packaging. hncypacking.com 
