Floor mat and process for producing the same

A floor mat having an upper face layer and a base layer, which comprises a plane section and a marginal peripheral section surrounding the plane section, wherein at least a part of the marginal peripheral section contains a belt-like portion which is raised at the side of the upper face layer and extends continuously and substantially in parallel to a marginal peripheral edge thereof; the belt-like portion contains a channel extending longitudinally thereof at the side of the base layer; and the belt-like portion carries at least one convex-concave structure on a wall surface of the channel, with the proviso that, when the convex-concave structure extends transversely of the channel, the convex-concave structure is discontinued on at least a bottom surface of the channel, is disclosed. The floor mat according to the present invention has a sufficient peeling strength obtained by a compression process used for only a short period of time.