BMC MATERIAL AND MOLDING METHOD

PROBLEM TO BE SOLVED: To permit the molding of a molded form, prominent in decorative property and provided with a flow pattern, with a high yield by a method wherein a coloring agent is added to the composition of BMC(bulk molding compound), having flowing property, and the composition is extruded...

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Bibliographische Detailangaben
Hauptverfasser:	HAMADA KOICHI, DEGUCHI AKIMITSU, KOBAYAKAWA IKUO
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS MAKING GRANULES OR PREFORMS PERFORMING OPERATIONS PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS 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:	PROBLEM TO BE SOLVED: To permit the molding of a molded form, prominent in decorative property and provided with a flow pattern, with a high yield by a method wherein a coloring agent is added to the composition of BMC(bulk molding compound), having flowing property, and the composition is extruded or poured out before the coloring agent is dispersed uniformly, then, the viscosity of the composition is increased. SOLUTION: The composition of BMC, having flowing property, is supplied into an extruder 1. Then, a coloring agent, such as a pigment, liquid toner or the like, is added to the composition of BMC from the vicinity of the nozzle 1a of the extruder 1. Thereafter, extrusion molding is effected immediately after adding the coloring agent or before the coloring agent is dispersed uniformly. According to this method, a molded form of extrusion, which is provided with strings of the coloring agent, can be obtained. The BMC material is obtained by increasing the viscosity of the molded form. When the opening of the nozzle 1a is formed so as to have the shape of a slit, a flat plate type BMC material can be obtained.