| 摘要 |
PURPOSE: Provided is a coextruded-biaxially oriented polypropylene film sensed by a fluorescent sensor, which is produced by coextruding and orienting a polypropylene resin containing a fluorescent agent. CONSTITUTION: The coextruded biaxially oriented polypropylene film is produced by a process comprising the steps of: mixing 0.1-10wt% of master chips comprising 0.001-50wt% of the fluorescent agent such as a benzoxazole, a triophenediyl, and a benzoxazoyl and 99.999-50wt% of powdery polypropylene resin and 90-99.9wt% of polypropylene resin chips; injecting the composition into an extruder for a face layer(A), a face layer(B), or a base layer(C); and performing a coextrusion, a biaxial orientation or an orientation by an inflation method, and a corona-discharge treatment. |
