Patent ID: 7504059

Claim:
A method for forming a plastic product comprising the steps of: providing a mold having a first mold part, a second mold part and a slide movable within at least one of said first and second mold parts; closing said first and second mold parts wherein a closed mold cavity is formed, said closed mold cavity being defined by said first mold part, said second mold part and said slide, and said slide being movable within said closed mold cavity; injecting a plastic at a first temperature into said mold cavity while said movable slide is in a retracted position, said first temperature being above the melting temperature of said plastic; cooling said plastic to a second temperature by directly contacting said plastic with an internal surface of at least one of said first mold part, said second mold part and said slide, said second temperature being lower than said first temperature and being below the melting temperature of said plastic wherein said plastic becomes at least partially solidified; and reheating said plastic to a third temperature by moving said slide in a forward direction within said mold cavity, wherein said slide is moved at a speed sufficiently great so as to create heat in the plastic such that said third temperature is higher than said second temperature, and is at least about the melting point of said plastic whereby said plastic becomes more liquid.