METHOD FOR MAKING A PART PROVIDED WITH A MECHANICALLY WEAKENED ZONE FORMING A HOLE OR A HOLE OUTLINE, AND RESULTING PROFILED SECTION

摘要

Formation of a mechanically weakened section in of thermoplastic article includes forming a hollow in a zone of constant thickness, making the zone plastic using a heating probe and using a punch or die to form a hole or a start of a hole in the plastified zone. Independent claims are included for the following: (a) profiled plastic article produced as above; and (b) a junction box, etc. for electric cabling, has a plinth with a profiled section as in (a) and a cover.