mingye packing

In industrial production, the tackifier for   polyethylene  stretched   films   can make low-molecular-weight polyisobutylene (PIB), ultra-low-density polyethylene (VLDPE) with a density lower than 0.905, and ethylene-vinyl acetate copolymer (EVA). PIB, as a tackifier for polyethylene stretched film, has a wide range of viscosity adjustment, convenient adjustment and obvious price advantages. Stretch film requires excellent peel adhesion and excellent lap adhesion. The higher the peel adhesion, the smaller the possibility of opening the tray. The better the sealing performance of the stretch film. The stretch film is only affected by the longitudinal direction. The less likely it is, so in order to obtain a strong package, the peel adhesive of the stretch film needs to be balanced. 1. The influence of molecular weight on the adhesion of stretched wrapping film Different molecular weights will lead to different adhesion, high molecular weight polyimide will make ...

  Nowadays, mechanized production is becoming more and more widespread, even for product packaging, machines are used. Stretch film packaging machines are commonly used. Only in this way can the entire industry develop healthily and produce high-precision, specialized large-scale complete production lines. To meet the demand for packaging machinery. So what is the  stretch film  suitable for packaging machines? 1. First of all, the viscosity must be strong enough, and it needs to use polyvinyl resin and special tackifier additives, with a strong adhesive stretch film. 2. Strong tensile force. Because the tensile force of the stretch film packaging machine is greater than the manual force, the requirements for the stretch film itself are also relatively high. High elastic raw materials must be used to ensure that the proportion of the stretch film processed is as high as 1 : 5, which is twice the normal film. 3. Choose a stretch film with strong puncture resistance, high f...