achieve sealing for the resinous composition the fastener member shown in fig1 or fig7 has ridges at the edges and anchoring elements which are formed directly by the extrusion die in this case it is difficult to give cuts only to the middle ridges standing between two ridges at the edges and hence it is difficult to provide the back side of the substrate with a large number of discrete anchoring elements in the case of the flat fastener shown in fig4 it is possible to provide the back side of the substrate with a large number of discrete anchoring elements if the ridges are given cuts with the bend strips unraised and then the substrate is stretched it is not always necessary that the above mentioned elements be the same in shape and cross section no restrictions are imposed on the height of the engaging elements and anchoring elements they are usually about 1 to 15 mm preferably about 2 to 6 mm high the fastener member of the present invention may be produced by sticking the engaging elements into the substrate in this case the engaging element may take any shape such as a hook or arrowhead the production of an automotive seat cushion provided with the fastener member of the present invention is explained below the fastener tape 1 as shown in fig7 is placed in the recess 6 of.