초록 ▼

A wall structure for vessels, tanks, washing towers, tubes, boat hulls and the like can be manufactured from elements consisting of a core of rigid plastic foam which on a first side is coated with a layer of non-expanded plastic which adheres to the core and preferably is of the same type as the la

A wall structure for vessels, tanks, washing towers, tubes, boat hulls and the like can be manufactured from elements consisting of a core of rigid plastic foam which on a first side is coated with a layer of non-expanded plastic which adheres to the core and preferably is of the same type as the latter, whereas the core is exposed on the opposite side. The elements have an elongated plank-like shape with opposite side surfaces having respective groove-and tongue-like design for matching mutual engagement. They can be rigidly engaged in side-by-side relationship by welding and/or gluing. On an exposed face of the assembled elements, a reinforced plastic mass which sets into a continuous layer is applied, if desired after grinding for evening out irregularities.

대표청구항 ▼

A wall structure which can be used to construct objects such as vessels, tanks, washing towers, tubes and boat hulls, said wall structure comprising a multiplicity of separate, interengageable elongated wall elements, each of said elongated wall elements consisting of (a) an elongated core of expan

A wall structure which can be used to construct objects such as vessels, tanks, washing towers, tubes and boat hulls, said wall structure comprising a multiplicity of separate, interengageable elongated wall elements, each of said elongated wall elements consisting of (a) an elongated core of expanded hard plastic and having an upper and a lower surface and opposite side surfaces, the side surfaces of each core being shaped to provide for engagement with other of said elongated wall elements adjacent thereto, and (b) a separate layer of non-expanded plastic integrally adhered by coextrusion to said core over at least its upper surface, but not its lower surface; said elongated wall elements being positioned side-to-side so as to be engaged with one another and are also adhered together, the layers of non-expanded plastic on the upper surfaces of said elongated wall elements forming a smooth but discontinuous first outer surface of said wall structure, and a single layer of reinforced plastic adhered directly to the lower surfaces of all said engaged elongated wall elements, said single layer forming a smooth, continuous second outer surface of said wall structure.