Co-extruded profile strip containing lateral webs with adhesive subdivided into ribs

A method of producing a profile strip which comprises:

• a closure element made of a first material, the closure element comprising a base surface;
• one lateral web extending outwardly from the base surface on each side of the closure element and made of said first material;
• and, an adhesive layer made of a second material, different than said first material, said adhesive layer attached to each of the lateral webs but not to the base surface by co-extrusion of the lateral webs and said adhesive layer,
• said method comprising co-extruding said adhesive layer with said lateral webs in such a manner that said adhesive layer is subdivided into at least two adhesive ribs on each of said lateral webs, with each two of said adhesive ribs adjacent to each other being separated by an adhesive-free area on said lateral webs, thereby producing said profile strip having the lateral webs substantially free of deformation.