Pressure molded articles and moldable composition

Abstract

Abstract A COMPOSITION OF MATTER COMPRISING A MIXTURE OF A MATRIX FORMER, A MASS OF PARTICULATE MATERIAL WITH THE PARTICLES OF PARTICULATE MATERIAL BEING GENERALLY UNIFORMLY SCATTERED THROUGHOUT THE MIXTURE, AND A SEPARATION INHIBITOR ALSO GENERALLY UNIFORMLY SCATTERED THROUGHT THE MIXTURE. THE COMPOSITION CAN BE MOVED THROUGH PASSAGES AND ORIFICES HAVING A VARIETY OF CONFIGURATIONS AND INTO A MOLD CAVITY UNDER PRESSURE WITHOUT RELATIVE SEPARATION BETWEEN THE PARTICULATE MATERIAL AND THE REMAINDER OF THE MIXTURE. ALSO DISCLOSED ARE ARTICLES THAT AT LEAST INCLUDE A SUBSTANTIALLY RIGID, NONPOROUS STRUCTURE PRESSURE MOLDED FROM SUCH COMPOSITION. THESE STRUCTURES ARE A SUBSTANTIALLY RIGID AND SOLID AGGLOMERATION WITH THE PARTICULATE MATERIAL AND SEPARATION INHIBITOR SUBSTANTIALLY UNIFORMLY SCATTERED RELATIVE TO SOLID MATRIX MATERIAL. WHEN THE SEPARATION INHIBITOR IS OMITTED FROM THE MIXTURE, AND AVAILABLE PRESSURE MOLDING EQUIPMENT AND PROCESSES ARE UTILIZED IN AN ATTEMPT TO FLOW SUCH MATERIAL THROUGH A MOLD CAVITY ORIFICE AND FORM PRESSURE MOLDED STRUCTURES THEREFROM, RELATIVE SEPARATION BETWEEN THE PARTICULATE MATERIAL AND MATRIX FORMER MATERIAL OCCURES. SUCH SEPARATION WOULD RESULT IN LOSS OF STRUCTURAL INTEGRITY OF THE MOLDED PART AND RESULT, E.G., IN BRITTLENESS, LOSS OF STRUCTURAL STABILITY, GRAININESS, MEASURABLE POROSITY, LOOSE PARTICLES OF PARTICULATE MATERIAL, AND THE LIKE. ON THE OTHER HAND, PRESSURE MOLDED ARTICLES EMBODYING THE INVENTION APPEAR TO BE UNIFORM AND HAVE GENERALLY UNIFORM PROPERTIES AND STRUCTURAL CHARACTERISTICS FROM ONE PORTION THEREOF TO ANOTHER. EXEMPLARY METHODS OF MANUFACTURING COMPOSITIONS ARE ALSO DISCLOSED.

Inventors

• 👤 T Deuter

Bibliographic Details