SPEAKER EDGE, METHOD OF FOAM-MOLDING THE SAME, APPARATUS FOR FOAM-MOLDING THE SAME, SPEAKER EDGE FOAM-MOLDING SYSTEM, AND SPEAKER EMPLOYING THE SPEAKER EDGE.

摘要

SPEAKER EDGE. METHOD OF FOAM-MOLDING THE SAME. APPARATUS FOR FOAM-MOLDING THE SANE, SPEAKER EDIZE FOAM-MOLDING SVSTENI. AND SPEAKER EMPLOYING THE SPEAKER EDAE A SPEAKER EDGE (7A) IS MADE OF A THERMOSETTING COMPOSITION (10) CONSISTING OF A POLYURETHANE PREPOLYMER AND AN INACTIVATED SOLID POLYAMINE AS A LATENT HARDENER. A GAS (II) IS DISPERSED IN THE THERMOSETTING COMPOSITION (10), PRIOR TO FEED INTO A MOLD (40), SO THAT IT CAN FOAM AND SOLIDIFY TO GIVE (HE SPEAKER EDGE CA). IN A METHOD OF MAKING THE SPEAKER EDGE (7A), THE COMPOSITION WILL BE INJECED INTO A FEMALE MOLD SEGMENT (41) HEATED BELOW THE CRITICAL THERMOSETTING TEMPERATURE, FOAMING (HE COMPOSITION. THEN PLACED IN THE FEMALE SEGMENT (41) IS A MALE SEGMENT (42) HEATED ABOVE THE CRITICAL TEMPERATURE, CAUSING THE INGREDIENTS TO REACT WITH EACH OTHER TO SOLIDIFY IN THE MOLD (40). AN APPARATUS (50) FOR MAKING THE SPEAKER EDGE (7A) FROM THE COMPOSITION HAS: A DEVICE FOR INTAKE OF A GAS (11), ANOTHER DEVICE FOR INJECTING THE COMPOSITION INTO THE GAS (1 1J, ANOTHER DEVICE FOR MECHANICALLY DISPERSING THE GAS THROUGHOUT THE COMPOSITION, STILL ANOTHER DEVICE FOR INJECTION OF THIS GAS-CONTAINING COMPOSITION INTO A FEMALE MOLD SEGMENT (41), A FURTHER DEVICE FOR PLACING A MALE SEGMENT (42) IN THE FEMALE SEGMENT (41), AND A STILL FURTHER DEVICE FOR SOLIDIFYING THE COMPOSITION, WHILE FOAMING IT.