Static structures (e.g. – buildings) – With synthetic resinous component – Foam
Patent
1980-12-08
1984-06-12
Murtagh, John E.
Static structures (e.g., buildings)
With synthetic resinous component
Foam
523091, 523094, 5230911, 52404, 114357, 4283177, E04C 116, E04C 126, B32B 318
Patent
active
044533578
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of The Invention
The present invention relates to a wall structure which can be used, for example, in constructing objects such as vessels, tanks, washing towers, tubes, ships' hulls, etc. The invention also relates to a wall element for making such such a wall structure, and a method of making the wall structure.
2. The Prior Art
Norwegian Patent Specification No. 132 417 discloses an apparatus for the manufacture of sectional products of expanded plastic by extruding in such a manner that only part of the surface of the sectional product has a substantially non-expanded surface skin, whereas the remaining part of the surface of the product has substantially the same cell characteristics as the interior of the product.
The wall element used in the wall structure according to present invention has certain features in common with such an extruded section, but is different insofar as the wall element according to present invention is not a final product, but only an intermediate product for the manufacture of a greater wall structure, whereas according to Norwegian Patent Specification No. 132 417 it is a question of making ledgeformed products to be used as such. Another difference resides in that the wall element according to present invention consists of a relatively thick (about 1-10 mm) layer of solid material at the surface with a sharp transition to the expanded core, whereas according to Norwegian Patent Specification No. 132 317 it is a question of an expanded plastic which is extruded in such a manner that a relatively thin surface skin is obtained, which is practically not expanded. Here there is therefore obtained a gradual transition between the surface skin and the expanded core.
The object of the present invention is to provide a continuous wall structure for vessels, tanks, washing towers, tubes, boat hulls, etc., which is strong and simple in manufacture, the structure also readily lending itself to be given the shape of a double-curved surface and comprising an outer weather-resistant layer of reinforced plastic.
SUMMARY OF THE INVENTION
The wall structure according to the invention is composed of closely adjacent wall elements consisting of a core of rigid plastic foam which on a first side not facing adjacent elements is covered 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, and of a continuous layer of reinforced plastic which covers the noted opposite side and adheres to the exposed core, the elements engaging each other with matching shapes and being in addition connected to each other by welding and/or gluing.
A wall structure composed in this manner may be curved in two planes, the wall elements being capable of being bent relatively easily to the desired shape, since they do not have any layer of non-expanded plastic which surrounds the entire core. After the elements have been mutually connected, the side of the wall elements to be coated with reinforced plastic, can easily be ground or otherwise machined for obtaining a smooth and even surface on which the reinforced plastic, i.e., the plastic material and the reinforcement in the same, can be applied in a simple manner for obtaining an even and smooth exterior surface.
The wall elements are preferably elongated plank-like elements having opposite side surfaces which respectively include groove- and tongue-like shapes for mutual engagement of the elements. Preferably the elements may consist of a core of expanded PVC having a coating of non-expanded PVC on three sides. The reinforced plastic layer is preferably glass fibre-reinforced polyester or epoxy resin.
As mentioned above, the wall elements are preferably of elongated plank-like shape. They can easily be manufactured by co-extrusion.
In the manufacture of a wall structure as specified above the wall elements are assembled into desired shape, if desired with the concurrent use of templets, frames, shutterings, supporting
REFERENCES:
patent: 3093847 (1953-06-01), Strecker
patent: 3591443 (1971-07-01), Cox
patent: 3717247 (1973-02-01), Moore
patent: 3967671 (1976-07-01), Stanley et al.
patent: 4238544 (1980-12-01), Mullet
Chilcot Jr. Richard E.
Murtagh John E.
Sentralinstitutt for Industriell Forskning
LandOfFree
Wall structure, wall element for use in the wall structure and m does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Wall structure, wall element for use in the wall structure and m, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wall structure, wall element for use in the wall structure and m will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-116174