Apparatus and method for edge sealing of foam boards
AssigneeCPG International LLC
InventorsAlexander James Kidwell, Stephen Idziur, Thomas Zimmermann
Life of this patent
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Abstract
A method and machine for sealing at least one cut edge of a foam board is disclosed. The foam board has a top surface, a bottom surface and at least one cut edge extending between the top surface and the bottom surface. The cut edge is passed over a heated roller to soften the edge and then passed over a second roller having a temperature that is lower than the temperature of the first roller which seals the edge. The cut edge may be milled to square the edge relative to the top and bottom of the board before the cut edge is passed over the heated roller. Additional pairs of rollers may be provided to seal the top surface and the bottom surface of the foam board.
Claims11
A method of sealing at least one cut edge of a foam board, the foam board having a top surface, a bottom surface and the at least one cut edge extending between the top surface and the bottom surface, the at least one cut edge having open cells, the method comprising:
- passing the foam board between a first pair of rollers at a speed of 90 ft/min to 120 ft/min, at least one roller in the first pair of rollers having a temperature of 300° F. to 495° F. and engaging the at least one cut edge to soften the at least one cut edge;
- and
- then passing the foam board between a second pair of rollers having a temperature that is lower than the temperature of the at least one roller in the first pair of rollers causing the open cells to become closed.
Dependencies are inferred from the claim text.