Two-shot injection molded floor tile with vent hole

摘要

A modular plastic floor tile has a body of a first polymer compound and at least one upper feature overmolded onto an upper surface of the body from a second polymer compound which is injected from a gate adjacent the lower surface of the body. At least one through-hole communicates the gate to the upper feature. At least one vent hole, spaced from the through-hole, communicates the upper feature to the lower surface of the body. The vent hole allows any gas in the polymer flow path to be displaced from the upper feature, thereby preventing or minimizing defects that can affect adhesion and appearance.

主权项

1. A modular floor tile comprising:
a first compound body molded from a first polymer compound and having an upper surface and a lower surface; at least one second compound body overmolded onto the first compound body using a second polymer compound that is different from the first polymer compound, the second compound body extending from a fill point of the second compound body point disposed adjacent the lower surface of the first compound body and remote from the upper surface of the first compound body, to a plurality of ends of the second compound body remote from the fill point and spaced from each other; a plurality of through-holes spaced apart from each other and formed from the lower surface of the first compound body to the upper surface of the first compound body; for each through-hole, a vent hole spaced from the through-hole and extending from the upper surface of the first compound body to the lower surface of the first compound body; a plurality of upper features each formed on the upper surface of the first compound body as a portion of the second compound body, each upper feature laterally spaced apart from the other upper features, each upper, feature extending along the upper surface of the first compound body to cover a respective through-hole and a respective vent hole; and the second compound body extending into the vent holes from respective ones of the upper features, the ends of the second compound body joined by the second compound body to the fill point of the second compound body only by respective paths extending through respective ones of the through holes.