| 摘要 |
PURPOSE:To make the mixing of a stabilizing agent with polyamide uniform, by a method wherein water is removed through a vent port of a specific melting and extruding machine by adding the specific stabilizing agent into the polyamide to be melted and kneaded in a form of a water solution. CONSTITUTION:A molten state polyamide resin composite obtained by loading 100wt part polyamide resin and a 0.1-1.0wt part water solution, containing 5-150wt part potassium halide and 0-50wt part copper balide in 100wt part water, into a hopper 3 of a meting and extruding machine 1 provided with a vent hole and mixing up and melting within a cylinder 2 is transferred to a discharge port 6 by a screw 4; as a vent 5 is provided in the midst of the cylinder 2, there surplus water is eliminated out of the molten state polyamide. Therefore, it is desirable to make the inside of the cylinder 2, to which the vent 5 is fitted, into a depressurized atmosphere. Such a degree of subatmospheric pressure as to become the water in the polyamide composite obtainable from the discharge port 6 of an extruding machine into less than 0.2wt% and a passing period of time of its atmosphere are adopted. |
