Process for filling with foam the inner boot of skiboots and skiboot produced according to the process

Claim 1

A process for filling an inner boot of a ski boot with a foam material, comprising the steps of: establishing two cavities on opposite lateral sides of an inner boot of a ski boot such that one of said cavities is located on an inner side of the inner boot and the other of said cavities is located on an outer side of the inner boot, said two cavities being asymmetrical with respect to a vertical longitudinal central plane of the inner boot in that one of the cavities extends further toward the tip of the inner boot than the other cavity, and an opening into the front portion of each of said cavities and at least one opening from the heel portions of the cavities; introducing an expandable foam material into each of said cavities by injecting said expandable foam material through the openings in the front portons of the cavities, said foam material being directed toward the heel portions of the cavities, until the expandable foam emerges from the opening in the heel portions, thereby filling said cavities with expandable foam material; and expanding said expandable foam material to produce expanded foam material completely filling said cavities.