In consideration of that burning a PVC-based tape causes occurrence of
dioxine, a nonhalogenated tape having physical properties and electric
properties, which are comparable to a PVC-based tacking tape, and
replaceable to the PVC-based tacking tape is desired. Simple replacement
of PVC to a polyethylene-based synthetic resin causes a bad hand cutting
performance. Hence, the composition of the synthetic resin composition is
improved to have 100 weight parts of a polypropylene-based resin, 1 to 70
weight parts of a polyethylene-based resin, 1 to 200 weight parts of an
inorganic filler with a range from 0.5 .mu.m to 10 .mu.m of an average
grain size, and 0.1 to 50 weight parts of an compatibilizer to form a
film. In addition, the film is drawn 1.05 to 3 times in an MD and
thickness of the film is kept to 0.03 to 0.5 mm.