zhanhuixinpacking

  How to detect the quality of wrapping film? Wrapping film  is widely used in the packaging and transportation of various products. Wrapping film is also called stretch film. Toughness and shrinkage are the criteria for measuring the quality of stretch film. If the quality is not good, then you will not accept it after the packaging is completed. , Can not play the role of protection as it should be. So how to check the quality of stretch film? 1. A micrometer can be used to detect stretched film. It is not easy to grasp accurately by visual inspection. Because the diameter of a hair is about 7 filaments, the sensitivity of the hand feel is unattainable. Someone uses a scale to weigh the weight of each roll. In fact, the film is maintained. The thickness of the bottom paper and the glue are different, so it is difficult to accurately grasp. The thickness of the 9-thread mask is also coated with a layer of glue, so it should reach 11 threads instead of the total amount of stre...

  How to distinguish between stretch film and plastic wrap Many people don't know how to distinguish the difference between plastic wrap and  stretch wrap film , or even how to distinguish their uses. Today, ZHX stretch stretch film manufacturers will tell you how to distinguish stretch film and cling film. Many people have a misunderstanding about stretch film. Artificial stretch film is a poor quality cling film, and cling film is divided into PE and PVC. PE is a bit like a plastic bag with cheaper material, and PVC bag food looks brighter. PVC is used for packaging fresh fruits and vegetables. Like stretch film, it is usually a low-quality PVC film. If there are too many impurities or opaque and bright, it cannot be used on packaged food. In fact, stretch film has higher tensile strength and transparency, but it cannot be used for food packaging. Transparent food-grade packaging can package food with slightly higher tensile strength, while cling film is more expensive. Stre...

  Principle and characteristics of PE stretch wound film PE stretch wrap film  can be called stretch film, stretch film, stretch wrap film and so on. With the help of the super-strength winding force of the stretched film, the product can be compactly bundled into a unit. And there are no sharp edges and stickiness. There is no looseness and separation of the product even in unfavorable environments. Stretch film has the characteristics of strong toughness, high elasticity, tear resistance, high viscosity, thin thickness, cold resistance, heat resistance, pressure resistance, moisture and dust resistance, oil resistance, single-sided and double-sided adhesive. In use, it can save materials, labor, and time. In use, in order to make the stretch film tightly wrap the packaged items, the film needs to be stretched first, and then wrapped around the object. The stretch film has the following characteristics: 1. Strong tensile strength, not only has super tensile strength, but also...