Thin, deformable composite laminate
AssigneeSwiss Aluminium Ltd.
InventorsPedro Rodrigues, Ingo Buren, Jurgen Timm
Life of this patent
Estimating the term…
Abstract
A thin, plastically formable composite laminate features at least one metallic outer layer (14) and a core (10) of thermoplastic plastic. The metallic outer layers (14) exhibit a flat stress-strain curve which is similar to that of the plastic core (10) and is achieved by specific types of aluminum alloys and by specific alloy treatments. The, preferably 1.5-2.5 mm thick, composite laminates are employed for the manufacture of shaped parts in light weight constructions, especially in automobile, equipment and architectural applications.
Claims14
A metal-plastic composite laminate which is readily plastically formable comprising a plastic sheet-like core having a pair of surfaces and at least one metal foil uniformly bonded to one of the surfaces of said plastic sheet-like core wherein said metal foil is formed of an aluminum alloy characterized by a flat stress-strain curve, said aluminum alloy consists essentially of from 0.8 to 1.5 wt.% of Fe;
- from 0 to 0.5 wt.% Mn;
- from 0 to 0.5 wt.% Si wherein the sum of Mn and Si is from 0.2 to 0.8 wt.%;
- up to 0.8 wt.% total of other elements which each individually do not exceed 0.3 wt.% in concentration;
- and the balance Al.
Dependencies are inferred from the claim text.