Views:4 Author:Site Editor Publish Time: 2020-11-16 Origin:Site
What are the criteria for choosing a clear bundling stretch film ?
The clear bundling stretch film is used for the sales and transportation of various products, Its main function is to stabilize, over and protect the product. Stretch film has high flexibility, not easy to break, strong blast resistance, strong impact resistance,strong tear resistance, strong tension, and can replace box packaging.
The first one is the stress retention of the stretched film.Stress retention refers to the degree to which the tension applied to the film can be maintained during the stretch wrapping process.Stress retention refers to the degree to which the tension applied to the film can be maintained during the stretch wrapping process.Stress retention refers to the degree to which the tension applied to the film can be maintained during the stretch wrapping process.
Second, The allowable stretch of clear bundling stretch film
Allowable stretch refers to the maixmum stretch that can be applied to maintain various necessary characteristics in a certain application. The allowable stretch varies with different applicaions, The larger the allowable stretch, the less the film consumption and the lower the packagign cost.
Third, the stretching of the clear bundling stretch film?
Stretching is the ability of a film to produce elastic elongation after tensile force. The increase in longitudinal stretching will eventually make the film thinner and shorten the width. Although longitudinal stretching is beneficial, excessive stretching is often undesirable. Because this will make the film thinner, easy to tear, and increase the tension applied to package.
Fourth, the toughness of the clear bundling stretch film.
The thoughness is the comprehensive property of the film's puncture resistance and tear resistance. The risk value of the degree of tear resistance must be taken horizontally, That is, it is perpendicular to the operating direction of the machine, Becasue tearing in this direction will loosen the package, Even if the longitudinal tear occurs, the package can still remian firm.
Fifth, The self - adhesiveness of the stretch film
The adhesion of the stretched film after contact between the films, During the stretching and wrapping process and after wrapping, The packaging product can be tightened without loosenness. Self-adhesivenness is affected by many external factors, such as huimidity, dust and contaminats, There are two main methods for obtaining self -adhesive films, One is to process a film with a smooth and glossy surface, The second is to use additives that increase adhesion to make the surface of the film have a wetting effect, thereby improving adhesion.