How to check the quality of PE stretch film
Source：How to check the quality of PE stretch filmTime：2019-07-11Visitors：
PE stretch film is a very popular packaging material because it is harmless to humans. This is one of the reasons why PE stretch film has been widely used in the application of PE stretch film on the packaging of products in recent years.
PE stretch film
At normal temperature, the PE stretch film uses the mechanical stretching device or the tensile stress generated by the manual stretching of the film, and the tensile force and the retracting force of the PE stretch film are closely attached to the surface of the packaged product, and the special packaging performance is obtained. It can play the role of dustproof, moisture-proof, waterproof, etc., and the number of consumers who purchase PE stretch film is also increasing, but most of the buyers have a problem. What kind of PE stretch film is good? Is there any simple and quick way to judge whether it is good or bad? Next, I will teach you several ways to identify the PE stretch film.
The first measure: the stretchable range of PE stretch film
The stretchable range refers to the stretch that can be applied while maintaining various properties in the case of a certain use. The stretchable range varies with different uses. The larger the stretchable range, the lower the amount of film used and the lower the packaging cost.
The second measure: stretching of PE stretch film
Stretching is the ability of a film to produce elastic elongation after being subjected to tension. An increase in longitudinal stretching will thin the film and shorten the width. While longitudinal stretching is beneficial, overstretching is often undesirable. This will make the film thinner and tear, while increasing the tension applied to the package. With such tensile properties, the items can be packaged better.
The third measure: the toughness of PE stretch film
Toughness is the comprehensive property of the film against puncture and tear resistance. The tear resistance refers only to the degree of tear resistance of the film after being subjected to tension and being puncture. The hazard value of the degree of tear resistance is transverse, i.e. perpendicular to the direction of operation of the machine, since tearing in this direction will loosen the package and the package will remain secure even if it is torn longitudinally. Therefore, the better the toughness of the PE stretched film means the better the quality.
The fourth measure: self-adhesiveness of PE stretch film
The adhesion between the films after contact, during and after the stretching and wrapping, enables the packaged product to be fastened without loosening. Self-adhesiveness is affected by many external factors. Such as humidity, dust and pollutants. There are two main methods for obtaining self-adhesive films: one is to process a smooth and glossy film; the other is to use a filler that increases adhesion to make the surface of the film moist, thereby improving adhesion.
PE stretch film
At normal temperature, the PE stretch film uses the mechanical stretching device or the tensile stress generated by the manual stretching of the film, and the tensile force and the retracting force of the PE stretch film are closely attached to the surface of the packaged product, and the special packaging performance is obtained. It can play the role of dustproof, moisture-proof, waterproof, etc., and the number of consumers who purchase PE stretch film is also increasing, but most of the buyers have a problem. What kind of PE stretch film is good? Is there any simple and quick way to judge whether it is good or bad? Next, I will teach you several ways to identify the PE stretch film.
The first measure: the stretchable range of PE stretch film
The stretchable range refers to the stretch that can be applied while maintaining various properties in the case of a certain use. The stretchable range varies with different uses. The larger the stretchable range, the lower the amount of film used and the lower the packaging cost.
The second measure: stretching of PE stretch film
Stretching is the ability of a film to produce elastic elongation after being subjected to tension. An increase in longitudinal stretching will thin the film and shorten the width. While longitudinal stretching is beneficial, overstretching is often undesirable. This will make the film thinner and tear, while increasing the tension applied to the package. With such tensile properties, the items can be packaged better.
The third measure: the toughness of PE stretch film
Toughness is the comprehensive property of the film against puncture and tear resistance. The tear resistance refers only to the degree of tear resistance of the film after being subjected to tension and being puncture. The hazard value of the degree of tear resistance is transverse, i.e. perpendicular to the direction of operation of the machine, since tearing in this direction will loosen the package and the package will remain secure even if it is torn longitudinally. Therefore, the better the toughness of the PE stretched film means the better the quality.
The fourth measure: self-adhesiveness of PE stretch film
The adhesion between the films after contact, during and after the stretching and wrapping, enables the packaged product to be fastened without loosening. Self-adhesiveness is affected by many external factors. Such as humidity, dust and pollutants. There are two main methods for obtaining self-adhesive films: one is to process a smooth and glossy film; the other is to use a filler that increases adhesion to make the surface of the film moist, thereby improving adhesion.
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