Solar collectors and process for the manufacture thereof
OwnerManfred Schelziginventor
Life of this patent
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Abstract
A carrier or frame for solar collectors, having a rigid-cellular plastic filling body completely or partially coated with a tight-sealing synthetic top layer. A process for the manufacture thereof which involves the use of casting molds for forming the cellular filling body and for applying a liquid resin thereto as a top layer.
Claims26
A molded solar collector carrier comprising a rigid-cellular polyurethane foam filling body coated with a tight sealing polyurethane top layer, having a density and rigidity greater than said filling body, said top layer being formed from a mixture of multifunctional polyether alcohols with a combination of non-light resistant and light resistant aliphatic polyisocyanate compositions, said aliphatic polyisocyanates being distributed in said mixture so that the inner surface is formed non-light resistant and the outer surface is light-resistant, said top layer being the supporting component of said carrier and being integrally bonded with said filling body by chemical cross-linkage means.
Dependencies are inferred from the claim text.