Production of blade for office appliances
A mold for producing a blade for office appliances, wherein a resilient member made of a heat-curable material is adhered to a base plate. The mold includes a cavity corresponding to the resilient member of the blade, a space for placing the base plate adjacent to the cavity, a runner for passing the heat-curable material therethrough and injecting the heat-curable material into the cavity, and a heating means adjacent to the cavity, for causing curing of the heat-curable material in the cavity. At least a part of said runner, including an outlet thereof, is comprised of a cold runner for maintains the heat-curable material, which remains in the cold runner, at a temperature lower than its curing temperature.
1. A blade for office appliances, comprising:
a base plate, and
a resilient member made of a heat-curable material and adhered to said base plate, said heat-curable material having been subjected to curing in a cavity of a mold, with said base plate placed in a space of the mold, so that said resilient member is adhered to said base plate, wherein said base plate has a through hole for guiding said heat-curable material from a cold runner into said cavity of the mold,
wherein said resilient member comprises an elongated main body portion having a side edge, and a tab projecting from said side edge of the main body portion, and wherein said through hole is formed in that portion of the base plate, to which said tab of the resilient member is adhered, and
wherein said tab covers said through hole when said tab is adhered to the base plate.
2. The blade for office appliances according to claim 1 , wherein said tab projects along a plane that is parallel to a plane formed by a face of the base plate to which the entire resilient member is adhered.