| 摘要 |
PURPOSE:To obtain a polyarylene PA-based molded product by a method wherein PA-based melt-discharged matter is subjected to pressing at least once before or after stretching when a stretched molded product is manufactured by stretching the PA-based melt-discharged material. CONSTITUTION:The enhancement of the strength of a processed product can be realized by subjecting a melt-discharged matter made of PA-based resin or of its derivatives to pressing at least once before or after the stretching of said melt-discharged matter. PA resin having a melt-molding capacity such as polyphenylene sulfide, polyphenylene ether, polyether ether ketone, polyether sulfone, polycarbonate, polyethylene naphthalate or the like is exampled as suitable PA resin. Pressing can easily done by passing the discharged matter between a pair of rotating rollers, the gap between which is normally smaller than the size of the discharged matter. And the passing of the discharged matter through a small slit is also effective pressing for the discharged matter. The pressing treatment is given in a uniaxial, biaxial or triaxial direction effectively in the case of a film, although it is naturally only in uniaxial direction in the case of fibers.
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