A device for retaining a product in a parameterizable manner during a process carried out on the product, the device comprising: at least one gripping device (108a, 204) that engages a surface of the product during a product retention process; a vacuum circuit in a ring, comprising: a primary chamber (112, 212) that is supplied with a vacuum during product retention and transport phases, and that is supplied with air during product transport phases; and a secondary chamber (118, 218) that distributes the vacuum to the gripping device during product retention and transport phases and that distributes the air to the gripping device during phases of product extraction from the gripping device; a supply opening (121, 221) that establishes fluid communication between the primary chamber and the secondary chamber of the device; and a closing piston (125, 225) with a rod (125a, 225a) reciprocating between an engaged position, in which the closing piston obstructs the supply opening, and a disengaged position, in which the closing piston does not obstruct the supply opening; a return spring (125b, 225b) that effects the reciprocating movement of the rod between the engaged position, realized when the closing piston is subjected to an air supply pressure, and the disengaged position, realized when the closing piston is not subjected to an air supply pressure; characterized in that the device comprises a retention device comprising: a support frame with a structure defined between an upper surface and an opposing front surface; and a laying table comprising: a planar member with a front surface arranged next to the upper surface of the support frame, and with an opposite upper surface; and a contact member disposed adjacent the upper surface of the planar member, the contact member having a perforated surface with a plurality of openings that establish continuous fluid communication between the secondary chamber of the retention device and the contact member. at least one gripping device (108a, 204) that engages a surface of the product during a product retention process; a vacuum circuit in a ring, comprising: a primary chamber (112, 212) that is supplied with a vacuum during product retention and transport phases, and that is supplied with air during product transport phases; and a secondary chamber (118, 218) that distributes the vacuum to the gripping device during product retention and transport phases and that distributes the air to the gripping device during phases of product extraction from the gripping device; a supply opening (121, 221) that establishes fluid communication between the primary chamber and the secondary chamber of the device; and a closing piston (125, 225) with a rod (125a, 225a) reciprocating between an engaged position, in which the closing piston obstructs the supply opening, and a disengaged position, in which the closing piston does not obstruct the supply opening; a primary chamber (112, 212) that is supplied with a vacuum during product retention and transport phases, and that is supplied with air during product transport phases; and a secondary chamber (118, 218) that distributes the vacuum to the gripping device during product retention and transport phases and that distributes the air to the gripping device during phases of product extraction from the gripping device; a supply opening (121, 221) that establishes fluid communication between the primary chamber and the secondary chamber of the device; and a closing piston (125, 225) with a rod (125a, 225a) reciprocating between an engaged position, in which the closing piston obstructs the supply opening, and a disengaged position, in which the closing piston does not obstruct the supply opening; a return spring (125b, 225b) that effects the reciprocating movement of the rod between the engaged position, realized when the closing piston is subjected to an air supply pressure, and the disengaged position, realized when the closing piston is not subjected to an air supply pressure; characterized in that the device comprises a retention device comprising: a support frame with a structure defined between an upper surface and an opposing front surface; and a laying table comprising: a planar member with a front surface arranged next to the upper surface of the support frame, and with an opposite upper surface; and a contact member disposed adjacent the upper surface of the planar member, the contact member having a perforated surface with a plurality of openings that establish continuous fluid communication between the secondary chamber of the retention device and the contact member. a support frame with a structure defined between an upper surface and an opposing front surface; and a laying table comprising: a planar member with a front surface arranged next to the upper surface of the support frame, and with an opposite upper surface; and a contact member disposed adjacent the upper surface of the planar member, the contact member having a perforated surface with a plurality of openings that establish continuous fluid communication between the secondary chamber of the retention device and the contact member. a planar member with a front surface arranged next to the upper surface of the support frame, and with an opposite upper surface; and a contact member disposed adjacent the upper surface of the planar member, the contact member having a perforated surface with a plurality of openings that establish continuous fluid communication between the secondary chamber of the retention device and the contact member.