Process to heat preformed plastic pipes

An Infrared heating system ( 101 ) designed for the efficient heating of preformed plastic tubes ( 106 ). The system comprises an infrared housing unit with multiple longitudinal strips ( 107 N) of infrared heating elements ( 103 ), surpassing the length of the preformed tubes. A handling arrangement involving a series of rollers ( 202 ) facilitates the simultaneous oscillation and rotation of the plastic pipes. The inner surface of the infrared housing ( 102 ) features strategically positioned reflectors ( 109 N) to enhance the infrared heating effect. The handling arrangement includes longitudinally spaced motorized rollers for axial movement, and motorized wheels ( 110 ) and tracks ( 111 ) for transverse movement. The infrared housing unit offers multiple temperature zones to suit the characteristics of the plastic pipes and employs temperature sensors ( 114 N) for uniform and precise temperature control. A corresponding process for heating preformed plastic pipes is also described, integrating these features for effective and controlled heating.