Half-shell for forming thermal break door and window frames or the like, associated section and associated assembly process

Process for forming a section so as to produce a thermal break door or window frame, comprising the following steps:

• a) providing two half-shells and a heat-insulating body,
• wherein each half-shell comprises:
• a seat which is configured to receive a portion of said heat-insulating body and lock this heat-insulating body with respect to the section, and at least one tooth,
• wherein said seat comprises a bottom surface and two side walls,
• wherein one of said two side walls is formed by said tooth which can be bent towards the bottom of the seat so as to lock the heat-insulating body in position,
• wherein said tooth comprises a first snug projecting towards said seat,
• wherein said tooth also comprises a second snug projecting towards the seat and designed to penetrate into said heat-insulating body;
• b) inserting a portion of the heat-insulating body inside the seat;
• c) bending the tooth so that the second snug penetrates into the heat-insulating body.