Granular resin composition

Abstract

Abstract PURPOSE:To provide the titled compsn. which neither absorbs moisture nor expands and does not cause denaturation even when stored over a long period of time, by completely coating the surfaces of an inorg. filler and/or an org. filler with a thermoplastic resin. CONSTITUTION:35-95wt% thermoplastic resin such as PP or PS and 65-5wt% inorg. filler and/or org. filler such as CaCO3, sawdust or cellulose fiber are fed to a high-speed mixer heated to 100-150 deg.C, kneaded for 5-20min, then fed to a low-speed mixer cooled to 20 deg.C and kneaded for 10-20min until fine lumps are formed. The kneaded product is fed to a single screw extruder, melt-kneaded at 190-230 deg.C, extruded and cut to obtain a granular resin compsn. composed of an inorg. filler and/or an org. filler having a diameter of 2-3mm. and a length of 3-4mm. completely coated with the thermoplastic resin.

Inventors

• 👤 Masakuni Tsukushi
• 👤 筑紫　昌邦
• 👤 Hideo Okawa
• 👤 秀夫 大川

Bibliographic Details