For a virtual knot K and an integer r with r≥2, we introduce a method of constructing an r-component virtual link L(K;r), which we call the r-multiplexing of K. Every invariant of L(K;r) is an invariant of K. We give a way of calculating three kinds of invariants of L(K;r) using invariants of K. As an application of our method, we also show that Manturov’s virtual n-colorings for K can be interpreted as certain classical n-colorings for L(K;2).