WHY HOT SPLICING INSTEAD OF SEWING?

The AWE ARROW hot splicing press solves, once and for all, a widespread problem within industries that use continuous treatment lines of particularly “difficult” fabrics arriving from rolls.
In fact some fabrics, such as those made from glass fibre, kevlar, polyester monofilament yarns or particularly “open” fabrics, cannot be used with a cutting sewing machine which would be more suitable for a seam without over thicknesses.
In fact, with these types of fabrics, the seam cannot withstand the tension during coating, impregnation or finishing treatments, because the wefts slip.
Therefore special solutions are required such as doubling the edges, overlapping them or using double seam stitching.
This procedure generates notable overthicknesses as well as poor alignment of the wefts and the risk of creases and waste of several metres before and after the seam. The hot splice, on the other hand, “seals” the two overlapping fabrics that are correctly aligned and blocked.
The sealing is performed with a special thermosetting polymer tape that flattens and stiffens the transverse splice zone. During the subsequent processes, even hot ones, the typical problems of sewn seams shrinkage, creases and waste are eliminated.

Section of a fabric “sealed” in this manner enlarged 80 times.
As a result of the high pressure exerted by the heated bar, the thickness at the adhesion point is almost equal to the sum of the thickness of the two fabrics.