GASKET-EQUIPPED FLEXIBLE PRINTED WIRING BOARD AND METHOD FOR MANUFACTURING GASKET-EQUIPPED FLEXIBLE PRINTED WIRING BOARD
Provided is a gasket-equipped flexible printed wiring board including: a flexible printed wiring board with a through-hole; and a gasket, in which the gasket is provided integrally with the flexible printed wiring board so as to embed a partial region of the flexible printed wiring board in such a manner that the gasket is molded on the flexible printed wiring board, which is an insert component, by insert molding, the gasket has a gate mark on a first end side of the flexible printed wiring board in a width direction thereof, and the through-hole is, within the partial region of the flexible printed wiring board, formed at a position closer to a second end side, which faces the first end side in the width direction, than to the first end side.
1 . A gasket-equipped flexible printed wiring board comprising:
a flexible printed wiring board with a through-hole; and
a gasket,
wherein the gasket is provided integrally with the flexible printed wiring board so as to embed a partial region of the flexible printed wiring board in such a manner that the gasket is molded on the flexible printed wiring board, which is an insert component, by insert molding,
the gasket has a gate mark on a first end side of the flexible printed wiring board in a width direction thereof, and
the through-hole is, within the partial region of the flexible printed wiring board, formed at a position closer to a second end side, which faces the first end side in the width direction, than to the first end side.
2 . The gasket-equipped flexible printed wiring board according to claim 1 , wherein
the gasket has an annular seal protrusion, and the seal protrusion is provided so as to surround the flexible printed wiring board, and
in a case where the flexible printed wiring board is vertically seen through a surface thereof, the through-hole is formed so as to protrude from both sides of the seal protrusion in a lateral direction thereof.
3 . The gasket-equipped flexible printed wiring board according to claim 1 , wherein
the flexible printed wiring board has a plurality of lines, and the through-hole is a long hole elongated in a direction in which the lines extend and is formed so as not to overlap with the lines.
4 . A method for manufacturing a gasket-equipped flexible printed wiring board, comprising:
forming a through-hole at a position closer to a second end side, which faces a first end side of a flexible printed wiring board in a width direction thereof, than to the first end side;
preparing a die having an arrangement portion in which the flexible printed wiring board is to be arranged and a gate and a vent each formed on both sides of the arrangement portion;
arranging the flexible printed wiring board in the arrangement portion of the die such that the through-hole is at a position closer to the vent than to the gate; and
molding a gasket integrally with the flexible printed wiring board by injecting a material into a cavity of the die through the gate after the die has been clamped.