Method for introducing multi-component foam reactants into mold form

Abstract

A method for introducing reactants into molds and articles produced. The method involves placing a body member into a receptacle located on a turntable; aligning the body member within the receptacle; positioning a foaming spacer on the body member around an aperture in the body member; lowering a liner on a plug fixture into the body member so that the foaming spacer abuts both the body and the spaced apart liner; inserting a foam machine head into the aperture in the body; injecting suitable reactants through the head, through the spacer, into the chamber formed between the liner and the body; maintaining the contact between the head and the body for a few seconds to allow the reactants to activate and set; removing the head from the aperture of the body; and further rotating the turntable to allow the reactants time to cure. The apparatus for facilitating the introduction of reactants is the foaming spacer of the above method. The foaming spacer has a circular base ring and a circular top ring which are connected by a plurality of ribs. An opening is provided between each pair of ribs so that reactants flowing through the circular base ring, flow through the openings between the ribs, and into the chamber formed by the body and liner. Due to the force of the plug fixture and the force of the head, seals are created where the head contacts the spacer and where the spacer contacts the body.