POLYMER FOAM PLANK WITH DENSIFIED SKIN, METHOD AND APPARATUS FOR PRODUCING THE SAME

POLYMER FOAM PLANK WITH DENSIFIED SKIN, METHOD AND APPARATUS FOR PRODUCING THE SAME

A method and apparatus for making a densified skin polymer foam plank comprising providing a polymer foam having a plurality of cells and heating an outer surface of the foam at a heating station. The heating step collapses and melts the cells adjacent the outer surface to form the densified skin ha...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: STIMLER, JEFFERY, J, ZETTEL, DAVID, P, FAHRA, SAID K
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
PERFORMING OPERATIONS
SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR
SHAPING OR JOINING OF PLASTICS
TRANSPORTING
WORKING OF PLASTICS
WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:A method and apparatus for making a densified skin polymer foam plank comprising providing a polymer foam having a plurality of cells and heating an outer surface of the foam at a heating station. The heating step collapses and melts the cells adjacent the outer surface to form the densified skin having a density greater than a density of the foam before the heating step. Additionally, the method and apparatus may further include extruding the polymer foam from an extruder.