| 摘要 |
PROBLEM TO BE SOLVED: To provide an analysis method of flow state and a die therefor capable of evaluating the flow state of the molten resin in the die which has an effect on an appearance, transparency, and mechanical characteristic or the like of extrusion products such as film, sheet, or tube. SOLUTION: When extrusion molding at least one layer flat or cylindrical film or sheet or a cylindrical tube by using at least one kind of thermoplastic resin, flow state of the molten resin in the die is detected by using the extrusion die where a fluorescer is compounded to at least one kind of the thermoplastic resin and an observation door is provided, fluorescent excited from at least one kind of the thermoplastic resin, is detected by using a confocal laser microscope having the maximum speed capable of acquiring an image of 10 frames per second (fps) or more, and the flow state in the die is observed, recorded and analyzed by using a high-speed camera having the maximum photographing speed of 30 frames per second (fps) or more. COPYRIGHT: (C)2007,JPO&INPIT
|
