US 2010/0148408 A1Published application

Method of manufacturing a fiber reinforced plastic (FRP) lighting pole

OwnerHai-Chou Yeninventor

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Abstract

A method for manufacturing a FRP lighting pole has a preparing step, a forming step and a departing step. The preparing step has acts of preparing a pre-impreganted sheet material (prepreg), an elastic internal mold and a rigidity external mold, wrapping the prepreg around the elastic internal mold. The forming step has acts of putting the prepreg into the rigidity external mold, pumping air into the elastic internal mold to make the prepreg being pressed between the molds and heating the rigidity external mold to make the prepreg curing. The departing step has acts of reducing the pressure of the elastic internal mold, lowering the temperature of the rigidity external mold and separating the cured prepreg (cured pole) both from the molds to form a finished FRP lighting pole.

Claims23

Dependent claims

A method of manufacturing a fiber reinforced plastic (FRP) lighting pole comprising steps of:

a preparing step comprising:
preparing a pre-impreganted sheet material (hereinafter called “prepreg”), an elastic internal mold with an external surface and a rigidity external mold;
cutting the prepreg;
wrapping the prepreg around the external surface of the elastic internal mold;
a forming step comprising:
putting the prepreg and the elastic internal mold into the rigidity external mold and closing the rigidity external mold;
pumping air into the elastic internal mold to make the prepreg being pressed between the rigidity external mold and the elastic internal mold;
and
heating the rigidity external mold to make the prepreg curing;
and
a departing step comprising:
reducing the pressure of the elastic internal mold and lowering the temperature of the rigidity external mold;
and
separating the cured prepreg from the elastic internal mold and the rigidity external mold to form a FRP lighting pole.

11 more elements

Dependencies are inferred from the claim text.