Keep it cool with Fortisblades! Avoid "edge burn" when slitting stretch film

Keep it cool with Fortisblades! Avoid "edge burn" when slitting stretch film

Most manufacturers of stretch film will be familiar with the phenomenon known as “edge burn”, a local hot zone appears on the side of the roll when winding the freshly extruded film.

What happens?

The local heat causes plastification of the film edge, which makes the roll impossible for use after unwinding it. The film’s formula and its structure determine the probability of having to deal with edge burn. (Outer) layers with a low softening or melting point are prone to this problem. Typically these layers have a tacky character and cause more friction with the blade during slitting.

What can we do?

The further away the temperature at the cutting point is from the film’s softening point, the less likely you are to have edge burn. In other words: the cooler the blade, the better. Our Fortisblades team knows how to ‘keep it cool’ with the right blade concept and can help manufacturers to reduce edge burn.

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