Transparent stretch film is something that we can use in many occupations. In order to ensure the quality of the product, some things need to be paid attention to. Now we will be careful Know the introduction of this knowledge, right?

With the progress of the times, pestretch film has quickly established itself in the packaging industry in order to make product packaging easier. Its materials play a very important part. With the development of time, it has gradually been widely used in more factories. Next, the staff of Zhiteng will provide you with more comprehensive information:

Stretch film has the same performance as rubber at room temperature, has a certain degree of durability, and at the same time has certain elasticity, high elongation, self-adhesiveness and Flexibility, deeply loved by the packaging industry. Especially when transporting loose parts, only scattered objects can be packaged, with long-lasting beam tightness. This is also due to the stretch coefficient of the stretch film to a certain extent, which is the key to determining its performance and quality. So next, let us get to know each other.

Do you know why the stretch film needs to be added with additives? Now Zhiteng will answer this question for you! 1. Compatibility Poor compatibility will cause "migration" phenomenon, which is "sweat" in liquid additives and "blooming" in solid additives. Sometimes when the requirements for stretched film are not too strict, some lack of compatibility can be allowed, such as poor compatibility between filler and resin. As long as the filled particle size is small, it can still meet the basic requirements of stretched film performance. If it is treated with a coupling agent or surfactant, its function can be better played. However, there are some additives that improve the surface properties of the stretched film, such as an antistatic agent and an antistatic agent, which require a little bit of mobility to make it work on the surface of the stretched film.

If the stretch film manufacturer’s ziplock bag loses its airtightness, it will be no different from a general plastic bag. Then, how to detect the packaging material How about the tightness of the stretch film?