A process for the manufacturing of a load carrier

摘要

A process for the manufacturing of non-reinforced load carriers (1) of thermoplastic material. Sheet-shaped work pieces (2) and extended bar sections (3) are manufactured by means of an extruder. The work pieces (2) and bar sections (3) are allowed to cool and post-shrink after the manufacturing. An upper and a lower deck member (11 and 12 respectively) are molded in a number of molds comprising mold halves. A first mold contains shaping cavities being a negative representation of the upper deck member (11). A second mold gives shape to a lower deck member (12). The work pieces (2) are molded against each one cavity by means of vacuum and are pressed together while still hot whereby a hollow unit is formed. Skids (3') are molded in a similar way. The parts are allowed to cool and post-shrink whereupon they are joined with each other via a number of joining areas (10).