| 摘要 |
PURPOSE:To manufacture a thermoplastic resin composition within which particulates of submicron order are displaced in high density, by a method wherein gas is discharged while collecting the particulates into a moving layer by causing the gas containing the particulates having a specific particle diameter to come into contact with or collide with the moving layer of thermoplastic resin in a molten state and, thus, molten resin and the particulates are kneaded. CONSTITUTION:Gas is discharged while collecting particulates into a moving layer of molten resin by causing the gas containing the particulates having a particle diameter of not exceeding 10mum to come into contact with or collide with the moving layer of thermoplastic resin in a molten state, and thus, molten resin and particulates are kneaded. Then in succession to the kneading, a thermoplastic resin composition into which the particulates are dispersed is molded. The effect of the particulates compounded with thermoplastic resin is especially marked in such case that they are compounded with the thermoplastic resin in a large quantity fallen within a range of 5-40volume%. As the gas to used, air, nitrogen, carbon dioxide or a rare gas such as argon, preferably an inactive gas is suitable as working gas and a gas having the boiling point lower than the melting point of the thermoplastic resin is preferable. In such a case when a gas containing the particulates is collected by causing the same to collide with the molten resin, the spouting through a fine hole should be at a flow speed of at least 10m/sec., preferably 40-200m/sec. |
