Method of making a product for dispensing a volatile substance

Abstract From the Canadian patent

A method of making a product which holds and, dispenses a volatile substance comprises the steps of, advancing a backing material a reservoir material and a, third material that is permeable to the volatile substance from respective supplies into close proximity to each other with the reservoir material lying between the backing and permeable materials. The volatile substance is then supplied to the reservoir material to be absorbed thereby. The three materials are fused together in a pattern defining a closed loop periphery to seal the reservoir material between the backing and reservoir materials at the periphery and thereby form the product.