It is also known as monotape or slit film. A single tape is manufactured and then cut lengthwise to divide it in several tapes, creating a lattice structure. Both polypropylene(PP) and polyethylene(PE) can be used to produce fibrillated yarn.
Fibrillated yarn was very popular many years ago at the early stage of artificial grass. Nowadays you can see fibrillated yarn mainly for sports, like football, soccer, tennis, hockey and etc.