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Difference between pre-stretched and the tensile resistant

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Difference between pre-stretched and the tensile resistant

Source:本站原创    Posttime:2010-2-2 10:46:03
Based on the ways stretch films are stretched, the stretch film winding machine can be divided into two types: "pre-stretched" and the "tensile resistant". 1. Tensile resistant winding machine: This is how the machine works: through adjusting the friction damper of the tensile resistant mechanism, the speed at which the stretch film is pulled out is slower than that of the item to be wrapped when the pellet rotates. Then the stretch film will wind around the item at the same time when it is drawn out. Since the damping can be adjusted to "zero", a stretch film or ordinary plastic film, regardless of quality, can be used. However, for items which are lighter or higher, they are hard to pack stably, and will consume much more film. 2. Pre-stretched winding machine: With the pre-stretch film frame mechanism, the stretch film will be twisted onto the item on the pallet, according to the designed draw ratio. This machine has advantages including uniform unfolding, beautiful packaging and excellent applicability (can be used for ultra-light and ultra-high cargo). Under the same conditions, it can save as much as 30-50% supplies compared to tensile resistant machines.