Stretch film packaging film, at room temperature; the use of mechanical stretching devices or manual stretching of the film generated by the deformation of the deformation stress; the goods wrapped tightly for easy transportation; and the storage of a packaging method is a very popular form of packaging. Adopting imported resin and an advanced flow diffusion film extrusion production process. It has the features of good tensile performance, tear resistance, strong penetration resistance, high transparency, good self-adhesion, a high shrinkage rate, tight packaging, and will not be loose. It can be widely used for single-piece or pallet packaging and other bundling packaging of chemical raw materials, fertilizers, foodstuffs, electromechanical products, light textile products, and so on.
Packaging stretch film is divided into machine wrapping series and hand wrapping series.
Stretch film for hand use
a. Thickness: 15mic-20mic
b、Width: 5cm-45CM
c, Stretch rate (Elongation): 200%-400
d, Color: Transparent (other colors can be customized according to customer requirements)
Stretch film for machine use
a, Thickness: 20mic-45mic
b、Width: 45CM-100CM
c, Stretching rate (Elongation): 300%-500
Fields of application
Packaging stretch film must be stretched; pallet machinery packaging stretching is a form of direct stretching and pre-stretching. There are two types of pre-stretching: one is roll pre-stretching and the other is motorized stretching.
Direct stretching is done between the pallet and the wrapping film. This method of stretching times is low (about 15% to 20%); if the stretching rate is more than 55% to 60%, more than the original yield point of the film, the film width is reduced, puncture performance is also lost, and the film is easy to break. And at 60% stretch rate, the tension is also very large; for light goods, it is likely to make the goods deformed.
Pre-stretching is done by two rolls. The two rolls of the pre-stretching are linked together by a gear unit, and the stretching multiplier can be different depending on the gear ratio. The tension is generated by the turntable, and since the stretching is generated within a short distance and the friction between the rolls and the film is large, the film width does not shrink, and the film’s original puncture properties are maintained. No stretching occurs during actual winding, reducing breakage due to sharp edges or corners. This pre-stretching can increase the stretching multiplier up to 110%.
The stretching mechanism of electric pre-stretching is the same as that of roll pre-stretching; the difference is that the two rolls are driven by electricity and the stretching is completely independent of the rotation of the pallet. So it is more adaptable and suitable for light, heavy, and irregular goods. Due to the low tension during packing, the pre-stretching multiplier of this method is as high as 300%, which greatly saves material and reduces cost. Suitable for film thickness 15～24μm.
Advantages
1. Stretch wrapping saves raw materials than shrink wrapping and does not need a heat-shrink packaging machine, saving energy.
2. High strength, high elastic tension, can be wrapped tightly for any geometrical shape of commodities and can avoid the damage caused by bundling on commodities, with good effects of preventing from loosening, preventing from rain, preventing from dust, and preventing from theft.
3. High-performance resins and auxiliary materials can be utilized, which can satisfy the needs of different users in the largest range.
4. It can manufacture single-side adhesive products, reduce the noise issued during winding and stretching, and reduce dust and sand during transportation and storage.
Xinhong has been specializing in the design, manufacture, and sales of packaging stretch film for 20+ years. We can also provide you with a one-stop solution in the packaging industry. It’s our priority to serve the customer better. All you need to do is send your questions to us now!
Post time: Sep-06-2024