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The main points of the tension control in solvent-free composite

by:Kolysen     2020-12-05
Solvent-free composite tension control points 1, in general, rolling tension rolling tension with vice as a benchmark, increase andadministrative roll tension and rolling tension to that of the deputy match, let composite membrane eventually achieve flat state, under the premise, longitudinal and transverse rolling tension is not the minimum tension fold. 2, film coating after rolling tension, tension is slightly bigger than for traction after the glue film, so the corresponding coated steel roll don't need a lot of drive current. 3, winding tension rolling tension, slightly bigger than the winding tension need usually only at the beginning of the composite film adhesion force under 0. 2 n / 15 mm or so, winding taper control within 20% for good, with the increase of roll diameter, degree of tension decreased slower than dry compound. 4, in view of the different material film, composite parts in the process of tension size is also different, even the same material film, according to the composite structure is different, the tension is different also. Structure such as PET/PE, because PE is easy to stretch its tension is roughly in 3 ~ 5 n, the PET to contend with the shrinkage stress of PE, its tension is bigger, in roughly 20 n; Is also a PET film, in the composite structure of PET/paper, due to the stretchability of paper is better, so PET requires only minimal tension, usually around 5 n. Check whether the tension is the appropriate method in the process of composite downtime, in the use of the blade on the composite film winding delimit a cross, is the ideal state of composite membrane remained flat after the cut. If composite thin films in a certain direction curl, that the tension of the film is too big, should be appropriate to reduce the tension of the film or increase the tension of another layer of thin film. Check whether tension matching tip down, in the process of composite in winding in force on the composite membrane cross a cross, is the ideal state of composite membrane remained flat after the cut. If composite thin films in a certain direction curl, that the tension of the film is too big, should be appropriate to reduce the tension of the film or increase the tension of another layer of thin film.
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