Abstract: A method of producing realistic, artificial tree bark from an original natural tree initially includes forming a mold by applying a flexible rubber molding onto a selected tree. The mold is removed as a sheet and spread flat. An in-mold coating and an isocyanate and polyol containing compound is applied and allowed to cure. The bark is thereafter removed from the mold. Various colors may be added either as pre-mixed or after. Reinforcing materials may also be used.

Abstract: A simulated rock produced by spraying a high density polyurethane elastomer in a flexible rubber mold. The rubber may be natural rubber or synthetic rubber. A rock is produced in molded form, not limited in size. A flexible mold is prepared by applying numerous coats of liquid uncured rubber forming materials, such as latex rubber, upon the rock exterior in combination with a fabric embedded within the rubber latex layers. A supporting cradle for the rubber mold is produced by spraying a low density urethane foam composition over the mold. The mold and cradle are stripped from the rock and are sprayed with a two component structural urethane system employing an isocyanate component and a polyol component with appropriate catalysts, fillers and additives. The structural urethane elastomer is built up to substantial thickness to provide a strong rigid load bearing polyurethane molded rock simulating the original rock surface with curing taking place in a matter of seconds or minutes.

Abstract: A method for producing a simulated rock by spraying a high density polyurethane elastomer in a flexible rubber mold. The rubber may be natural rubber or synthetic rubber. A rock is produced in molded form, not limited in size. A flexible mold is prepared by applying numerous coats of liquid uncured rubber forming materials, such as latex rubber, upon the rock exterior in combination with a fabric embedded within the rubber latex layers. A supporting cradle for the rubber mold is produced by spraying a low density urethane foam composition over the mold. The mold and cradle are stripped from the rock and are sprayed with a two component structural urethane system employing an isocyanate component and a polyol component with appropriate catalysts, fillers and additives. The structural urethane elastomer is built up to substantial thickness to provide a strong rigid load bearing polyurethane molded rock simulating the original rock surface with curing taking place in a matter of seconds or minutes.

Abstract: A method for producing simulated rocks by spraying a high density polyurethane elastomer in a flexible mold. The method includes reproducing a rock in molded form, not limited in size. A flexible mold is prepared by applying numerous coats of latex rubber upon the rock exterior in combination with a fabric embedded within the rubber latex layers. A supporting cradle for the latex mold is produced by spraying a low density urethane foam composition over the latex mold. The mold and cradle are stripped from the rock and are sprayed with a two component structural urethane system employing an isocyanate component and a polyol component with appropriate catalysts fillers and additives. The structural urethane elastomer is built up to substantial thickness to provide a strong load bearing polyurethane molded rock simulating the original rock surface with curing taking place in a matter of seconds or minutes.