Roll-up door with foam core

Abstract From the Canadian patent

A roll-up door having one or more sections. Each section includes a foam plastic core between two opposed first and second sheet members. The first and second sheet members are generally similar in overall size but can be , fabricated from different materials. The core is housed between the sheet members and typically is fastened directly to the sheet members. The sections typically also include one or more border members around the periphery of the core. Adjacent panel sections are pivotally hinged. The border members located along the opposed mating portions of adjacent panel sections are stepped thereby allowing the door to be raised or lowered. One or more panel sections may …