Stretch film has good self-adhesion, high tensile strength, and tear strength, preventing the product from falling during transportation. After using stretch film for some time, the phenomenon of wrinkles will appear, which significantly impacts the application effect. Still, sometimes PE stretch film often appears to wrinkle during the use process, which will severely impact the packaging effect. Why would such a phenomenon happen:

 

1. The thickness of the stretch film substrate is uneven, and the thickness difference is too significant.

 

 

2. The position of the stretch film substrate is skewed, causing the composite film to appear wrinkled, and with the accumulation of skewness, the degree of wrinkling will increase accordingly.

 

3. The tension setting and control of stretch film are not proper, and the tension of each part is uncoordinated and mismatched.

 

4. The composite pressure of stretch film is not set correctly.

 

5. The axis between the silicone rubber pressing roller and the cooling steel roller is not parallel.

 

6. The surface of the guide roller is not clean, there are foreign objects stuck, or the surface of the guide roller is not smooth, with pits, scratches, bumps, and other phenomena.

 

The stretch film is used commonly and should be balanced and smooth. If it is wrinkled, it will also hinder its stickiness. The packaging of the goods is not only unsightly but also not tight, and it will not protect the goods. Corresponding measures must be taken to produce stretch film reasonably and correctly.