A layer multiplier ( 100 ) is disclosed. It comprises an inlet ( 102 ) for a flow of multilayered flowable material, a distribution manifold ( 104 ) into which the inlet debouches, a number >2 of separate splitting channels ( 106 ) extending from the distribution manifold, a recombination manifold ( 108 ) into which the splitting channels debouch, an outlet in one end of the recombination manifold, and the distribution manifold is arranged in an opposing relationship with the recombination manifold.