The structure of the polymer will change, and such an extreme stretching rate will be changed. Therefore Non -stick layer adds an appropriate medium -density linear polyethylene (LMDPE). These stretch membranes are full of calcium carbonate and other minerals. Generally, the stretch membrane is generally not tensile. Because the wide molecular measuring distribution makes it worse.

Material density also affects the performance of the wound film. Adding LMDPE can reduce the non -adhesive friction coefficient and avoid the packaging tray and the tray sticking together. Therefore, the performance of the stretch membrane is enhanced, and the longitudinal stretching can open the pores that given the product's breathable performance.

If the PIB or the mother material is used as the adhesive layer, it will also affect the movement of the PIB and reduce the final viscosity of the wound film. The China custom Hand Stretch Film PP stretching rate can reach 8: 1. The stretching rate is limited by the polymer to use a cluster or mix with some luminous metal PE.ufeff1. The temperature of the cooling roller increases, the yield strength increases, but other performance decreases, so the temperature of the general cooling I roller is controlled at 20 ° C ~ 30 ° C.

As the density increases, the orientation is increased, the flatness is good, the longitudinal extension rate is increased, and the yield strength is increased, but this makes the horizontal tear strength, puncture strength and light transmission rate of the wound film. The tension is generally not greater than 10kg, which is too large to survive in the membrane roll, which reduces the performance of the elongation rate, which is likely to cause the broken membrane phenomenon