Patent ID: 7044475

Claim:
A process for producing a gasket integrated with a cover for use in a hard disc drive device which process comprises extruding a gasket material which is composed principally of an acryl-modified polyurethane and which is curable with activation energy rays onto a cover body through an extrusion port of a three dimensional automatic painting control apparatus and simultaneously therewith, irradiating the extruded gasket material with activation energy rays from an activation energy rays irradiation apparatus to cure the material, wherein said gasket material has a viscosity of 50 to 10,000 Pa·s at the temperature of 23° C. and at the shear rate of 1.0/second, and has the value a of 0.3 or more, when the relationship between (y) the common logarithm of viscosity [Pa·s] and (x) the common logarithm of shear rate [s −1 ] is expressed by y=−ax+b (both a and b are each a positive number).