Method of making annealed door skins and composite door assemblies, and related articles

摘要

A method is provided for making an annealed door skin or composite door assembly. At least the door skin is formed of a composition comprising a thermoset binder and fiberglass. The door skin, alone or in combination with other parts of a door assembly, is subjected to annealing to make the annealed door skin. The process of annealing comprises the step of heating the door skin, alone or in combination with other parts of the door assembly, above the glass transition temperature yet below the thermal degradation temperature of the thermoset binder for a sufficient amount of time to cause release internal stresses in the door skin, then the step of cooling the door skin.

主权项

1. A method for making a composite door, comprising:
annealing a first door skin comprising a thermoset binder and fiberglass to make an annealed first door skin; securing the annealed first door skin to a first side of a door frame; and securing a second door skin to a second side of the door frame, the second side being opposite to the first side; said annealing comprising
heating the first door skin above the glass transition temperature yet below the thermal degradation temperature of the thermoset binder for a sufficient amount of time to release internal stresses in the first door skin; and cooling the first door skin.