Composite structural material
OwnerOtto Jungbluthinventor
Life of this patent
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Abstract
A composite structural material is disclosed which comprises a profiled steel sheet and an insulating layer bonded to the profiled steel sheet on at least one side thereof, said insulating layer comprising an expanded mineral core layer bonded with an inorganic binder or a mixture of inorganic binder and a small amount of organic binder. The steel sheet has joining means extending therefrom and into the insulating layer. The composite structural material may be used as a roof material.
Claims21
In composite structural materials comprising a profiled steel sheet and an insulating layer bonded to the profiled steel sheet on at least one side thereof,
- the improvement wherein;
- said insulating layer comprises an expanded mineral core layer bonded with an inorganic binder or a mixture of an inorganic binder and a small amount of organic binder and has a density not more than 0.4 ton/m.sup.3 ;
- and a thin mineral fiber reinforced covering layer covering at least one of said insulating layers;
- and
- said profiled steel sheet has a generally trapezoidal cross-section and includes joining means, said joining means comprising closely spaced punched thorny apertures formed in said profiled steel sheet and which form barb-like projections which are directed toward and which penetrate into said insulating layer;
- said composite having a total support strength substantially greater than the steel sheet alone and comprising a substantially continuous insulating covering over the profiled sheet.
In composite structural materials comprising a profiled steel sheet and an insulating layer bonded to the profiled steel sheet on at least one side thereof,
- the improvement wherein:
- said insulating layer comprises an expanded mineral core layer bonded with an inorganic binder or a mixture of an inorganic binder and a small amount of organic binder and has density not more than 0.4 tom/m.sup.3 ;
- and a thin mineral fiber reinforced covering layer covering at least one of said insulating layers;
- said profiled steel sheet has a generally trapezoidal cross-section;
- and
- a joining means is secured to said profiled steel sheet, said joining means comprising a welded structural steel mat fixedly secured to the profiled steel sheet and extending away from said side of said profiled sheet facing said insulating layer, said steel mat penetrating into said insulating layer;
- said composite having a total support strength substantially greater than the steel sheet alone and comprising a substantially continuous insulating covering over the profiled sheet.
Dependencies are inferred from the claim text.