low price LLDPE Stretch Film How to distinguish the quality of the Jumbo stretch film? 1. Judging from the stickiness: This can be used to test the stickiness with your hands, and you can well judge the stickiness of the Jumbo stretch film. 2. Judging according to the stretch ratio: we can stretch the Jumbo stretch film along the length of the film, and then stretch from the transverse direction, so that we can judge whether it is good or bad; also if the stretched film is too thin Then the toughness does not need to be tested to see that the stretchability is not good. 3. Judging by observing the glossiness: Generally, the ordinary stretch film is darker, and the good Jumbo stretch film is relatively transparent. What are the five technical indicators of Jumbo stretch film? 1. Self-adhesion of the Jumbo stretch film Adhesion after contact between wrapping films, during stretch wrapping and after wrapping, enables the packaged product to be tightened without loosening. Self-adhesion is affected by many external factors. Such as humidity, dust and pollutants. There are two main methods for obtaining self-adhesive stretch films. One is to process a film with a smooth and glossy surface; the other is to use an additive that increases adhesion to wet the surface of the wrapping film, thereby improving adhesion. 2. The toughness of the Jumbo stretch film Toughness is the combined property of puncture and tear resistance of the stretch film. Tear resistance only refers to the degree of tear resistance of the stretch film when it is under tension and punctured. The critical value of tear resistance must be taken transversely, i.e. perpendicular to the direction of machine operation, because tearing in this direction will loosen the package, and the package will remain strong even if a longitudinal tear occurs. 3. Allowable stretching of Jumbo stretch film Allowable stretch refers to the maximum stretch that can be applied to maintain various necessary properties under certain conditions of use. The allowable stretch varies by application. The larger the allowable stretch, the less the amount of stretch film and the lower the packaging cost. 4. Stretching of the Jumbo stretch film Stretching is the ability of a film to elastically stretch after being stretched. The increased longitudinal stretch will eventually make the wrap film thinner and shorter in width. While longitudinal stretching is beneficial, overstretching is often undesirable. Because this will make the wrap film thinner and easier to tear, while increasing the tension applied to the package. 5. Stress retention of the Jumbo stretch film Stress retention refers to the degree to which the tension applied to the stretch film can be maintained during the stretch wrapping process.low price LLDPE Stretch Film website:http://www.sino-topway.com/lldpe-stretch-film/