Joint system for joining ends of panels made of insulated material

A duct for air-conditioning systems, comprising:

• i) at least one panel made of pre-insulated material, and
• ii) at least one joining device joining longitudinal end portions of said at least one panel,
• wherein the joining device comprises:
• a first and second longitudinal seats formed at opposite parts of a longitudinal center line plane of the joining device, each of said seats housing a respective longitudinal end portion of said at least one panel, and
• fixing means for fixing the joining device to the longitudinal end portions of the panel, said fixing means being engaged in a removable manner with respective fixing countermeans associated to the longitudinal end portions of said at least one panel.

A method of manufacturing a duct for air-conditioning systems, comprising:

• i) providing at least one panel made of pre-insulated material,
• ii) providing at least one joining device comprising:
• a first and second longitudinal seats formed at opposite parts of a longitudinal center line plane of the joining device, each of said seats being adapted to house a respective longitudinal end portion of said at least one panel, and
• fixing means for fixing the joining device to the longitudinal end portions of the panel, said fixing means being adapted to be engaged in a removable manner with respective fixing countermeans associated to the longitudinal end portions of said at least one panel,
• iii) nearing the longitudinal end portions of said at least one panel, and
• iv) joining together the longitudinal end portions of said at least one panel by means of said at least one joining device to form the duct.