Personalized customized PE heat shrinkable film will ask you if you want

The customized PE heat shrinkable film will ask you if you want: customized PE heat shrinkable film saves raw materials than other packaging, and the packaging is convenient and energy saving. With high tensile strength and large elasticity, it can wrap tightly on any geometric shape of goods, and can avoid damage to goods caused by bundling, and has good anti-loosening, rain-proof, dust-proof and anti-theft effects. According to the requirements of different customers, the use of high-performance resins and auxiliary materials to achieve modifications, such as anti-static, transparent, black, etc., can meet the needs of different users to the greatest extent. It can manufacture single-sided viscous products, reduce the noise emitted during the winding process of customized PE heat shrinkable film, and reduce dust and sand during transportation and storage. The raw material of the customized PE heat shrinkable film is an amorphous polymer. When it is subjected to a tensile force greater than the yield strength within a certain temperature range, plastic extension deformation occurs. During the deformation process, the polymer structural units (chain segments, macromolecules and micro The crystal) starts to be oriented due to stretching. As the degree of orientation increases, the force between the macromolecules increases, causing the viscosity of the polymer to increase and the tendency to harden, and the deformation also tends to stabilize and no longer develops. This phenomenon is called 'stress hardening'. Properly increase the temperature, the ductility of the customized PE heat shrinkable film will be further improved, the stretch ratio can be increased, and even some polymers with poor ductility can be stretched. Usually the deformation from room temperature to Tg (minimum processing temperature) is called 'cold stretching'. After the polymer undergoes stress hardening during the stretching process, the flow of polymer molecules will be restricted and the stretching ratio will be prevented from further increasing. The customized PE heat shrinkable film that has undergone 'cold stretching' will return to its original shape after the stretching force is relieved, resulting in greater shrinkage. In fact, when designing a customized PE heat shrinkable film workshop, it is necessary to consider the heat preservation and air convection issues of the workshop, because the customized PE heat shrinkable film loses heat very quickly during the stretching process, and the customized PE heat The thinner the shrink film and the wider the stretch, the faster the heat dissipation. The author measured that the surface temperature of the customized PE heat shrinkable film dropped from 175°C to 135°C in just 3m from the stretching inlet to the stretching outlet, so the temperature in the production workshop should generally not be lower than 20°C. In the design of the workshop, only the exhaust windows were left at the top and no windows at the bottom. In addition, in order to prevent cold stretching, a heat preservation chamber can be made at the transverse stretching position to ensure the environmental temperature of the customized PE heat shrinkable film. Appropriately reducing the speed ratio of each machine can also reduce the stretching of the customized PE heat shrinkable film. The physical properties of POF are thin and tough, uniform thickness, good moisture resistance, and soft texture. High tensile strength, high tear resistance, and adjustable shrinkage. Due to the existence of LLDPE, the rub resistance is better. PE is thick and tough, uniform thickness, and moisture resistance Good, soft texture. The tear resistance is lower than POF, but much higher than PVC, and the shrinkage rate is poor. The rub resistance is not as good as POF. PVC is thick and brittle, uneven thickness, poor moisture resistance, hard and brittle texture. Low strength, Low shrinkage, poor rub resistance. Cold resistance and other physical properties. POF has excellent cold resistance. It is not hard or brittle at -50°C, and it is not easy to break. It can be used for frozen food packaging. After shrink packaging, the packaged material is stored at -50°C--95°C for a long time , Stable and unchanging. With static electricity and anti-fog treatment, it is not easy to pollute dust, and can keep the product clean and beautiful. PE has excellent cold resistance, and it will not harden or become brittle in winter or freezing, so it is not easy to break during transportation. Static elimination treatment It is not easy to stain dust and can keep the product clean. PVC is extremely cold-resistant, and it will become brittle in winter or after freezing, so it is easy to break during transportation. The longer the shrink packaging, the tighter the shrinkage and the deformation of the package. No static elimination treatment , Easy to be contaminated with dust, making product pollution blurred. Processing performance POF processing process does not produce water nor stick to the sealing rod, easy maintenance and operation. High toughness, smoothness and rub resistance make it suitable for automatic packaging on high-speed production lines. The PE processing process does not produce water, and does not stick to the sealing rod. It is easy to maintain and operate. It has high toughness and low rubability, and can be used for automatic packaging in higher-speed production lines. The PVC processing process will produce volatile matter, which is easy to cause mechanical damage and easy Adhere to the sealing rod, the operation is inconvenient, and the maintenance is difficult. After the safety POF shrink packaging, the four corners of the seal are soft, will not cut human hands, and are resistant to rubbing. After PE shrink packaging, the sealing corners are soft and will not cut human hands. After PVC shrink packaging, the four corners of the seal are hard and sharp, which is easy to cut and bleed.