Thermoformed part comprising a detachable part and a process for manufacturing such a part

A shaped part comprising:

• at least one thermoformed sheet of plastic material, the thermoformed sheet comprising an upper surface and an opposing lower surface;
• and
• at least one detachable part, the detachable part comprising a base and a fastening component located within or on the base, the fastening component capable of being fastenable to and detachable from an other part, wherein the base comprises an outer side having an outermost point and an opposing lower side having a lowermost point, the outer side being connected to the lower side by at least one side surface, wherein the at least one side surface defines an overhang comprising a portion formed by the outer side of the base and extending a distance (d) measured from an innermost point on the side surface,
• wherein the at least one detachable part is connected to the at least one thermoformed sheet by crimping, the base being at least partially surrounded by the at least one thermoformed sheet forming a recess therein, a portion of the lower surface of the at least one thermoformed sheet covering the outer side of the base and at least a portion of the at least one side surface of the base, achieving the crimping by folding of the at least one thermoformed sheet under the overhang defining a crimping zone, wherein a thickness (ts) of the at least one thermoformed sheet in the crimping zone is less than an average thickness (t) of the least one thermoformed sheet outside the crimping zone and the distance (d) of the overhang being greater than the average thickness (t) of the at least one thermoformed sheet outside the crimping zone,
• wherein a distance (H2) measured from the lowermost point of the base to a portion of the lower surface of the at least one thermoformed sheet adjacent to the base and outside the crimping zone is greater than or equal to the average thickness of the at least one thermoformed sheet outside the crimping zone.