Webs having deactivable expansion obstruction means

摘要

The present invention relates to web materials which can be used in the production of large quantities of articles which are assembled from, inter alia, continuously fed web materials. In particular, the present invention teaches web materials which are expandable by a predetermined elongation after the expandability of the web material has been activated externally. To provide this functionality, the web materials comprise at least one longitudinal expansion means and at least one deactivatable expansion obstruction means. Another object of the present invention is the process for making such web materials comprising the step of incorporating longitudinal expansion means and deactivatable expansion obstruction means into the web material.