Construction element for ceiling and wall arc boards and method for its manufacture

摘要

The element has a flexible arched plate (10) comprising two opposite side edges and a set of spaced-apart projections (11) extending upward from the arched plate. An elongate side segment (30) comprises an upper curved longitudinal edge and a lower curved longitudinal edge that faces the arched plate. The projections comprise a retaining portion, where the upper longitudinal edge of the side segment engages into the retaining portion in a form fit manner. A narrow web extends upward from the arched plate, where the projections merge with the narrow web. An independent claim is also included for a method for manufacturing a curved structural element.