PRODUCTION OF INJECTION-MOLDED MOLDING OF GLASS FIBER REINFORCED POLYPROPYLENE RESIN

PROBLEM TO BE SOLVED: To improve the dispersion of glass fibers into a resin and mechanical strength by injection molding the pellets of a specified polypropylene resin and specified glass fibers directly without the melt-kneading process of them. SOLUTION: An injection-molded molding of a glass fib...

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Bibliographische Detailangaben
Hauptverfasser:	TSUTSUMI IKUO, SAKAIZAWA MASAO, MATSUOKA KENJI
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To improve the dispersion of glass fibers into a resin and mechanical strength by injection molding the pellets of a specified polypropylene resin and specified glass fibers directly without the melt-kneading process of them. SOLUTION: An injection-molded molding of a glass fiber reinforced polypropylene resin is injection-molded after 100 pts.wt. of polypropylene resin pellets of 30-300 g/10 min MFR and 5-100 pts.wt. of glass fibers being mixed with the pellets unmelted. By the direct injection molding of the pellets of high fluidity and the glass fibers with the pellets unmelted, the poor dispersion of the glass fibers due to the defective defibration of the fibers which has been a defect when conventional resin pellets are used can be eliminated.