Deep c parts and method of molding
AssigneeGreen Tokai Co., Ltd.
InventorHiroaki Yamamoto
Life of this patent
Estimating the term…
Abstract
An elongated, substantially “C” cross sectioned part and method of making same are provided wherein the part may be injection. molded and covered with portions. The method includes, the provision of a mold cavity having an inclined nadir wall boundary (182) and moving (358) the female mold mold part (104) an angle of about 1-20° relative to the widthwise or Y direction. The part includes a plastic substrate and an optional paint film having one edge (204) wall (182) behind the show surface (200) of the part.
Claims16
In a method of molding an elongated automotive part having a substantially “C” shaped transverse cross sectional configuration, a nadir defining a bottom extremity of said part, an apex defining a top portion of said part, a major surface extending between said nadir and said apex and having a showside surface and an opposing rear surface, the improvement comprising:
- (a) providing a mold cavity defining a space congruent with said “C” shaped transverse cross section, said mold cavity extending along a longitudinal axis in a Z direction and having a horizontal direction Y and a vertical direction X, with X, Y, and Z being perpendicularly related to each other;
- (b) providing a nadir cavity section, an apex cavity section and a major surface cavity section in said mold cavity with said major surface cavity section having a front showside portion and an opposed rear portion, said nadir cavity section, apex cavity section and major surface cavity section, together defining said “C” configuration;
- (c) providing a sloped bottom wall in said nadir cavity section, said sloped bottom wall having a forward boundary proximate said front showside portion of said major surface cavity section and a rearward boundary extending away from said forward boundary in the Y direction and at an angle of about 1° to about 20° relative to a tangent line that touches said forward boundary, extends in said Y direction and is perpendicular to said X direction;
- (d) injecting molten plastic into said mold cavity;
- (e) allowing said molten plastic to cool to form said molded part;
- and
- (f) removing said molded part from said mold cavity.
Elongated automotive part of the type having a substantially “C” or backward “C” transverse cross-sectional configuration, said part comprising a nadir wall portion defining a bottom extremity of said part, an apex wall portion defining a top portion of said part, and a major surface extending between said nadir wall portion and said apex wall portion and wherein said major surface has a showside surface and an opposing rear surface, said part extending in X, Y, and Z directions wherein Z is a longitudinal axis of said part, Y is a horizontal direction of said part and X is a vertical direction of said part with X, Y and Z being perpendicularly oriented relative to one another, wherein said nadir wall portion extends away from said show surface of said major surface and has an inclined bottom wall surface, said bottom wall surface has a forward boundary contiguous to said major surface and a rearward boundary spaced rearwardly from said major surface along said Y direction, said bottom inclined wall disposed at an angle of between about 1° to about 20° relative to a tangent line touching said forward boundary that extends in said Y direction and is in perpendicular disposition to said X direction.
Elongated automotive part as recited in 10 wherein said paint film is a laminate having a color layer therein.
Dependencies are inferred from the claim text.