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AssigneesTeijin Limited, Agency of Industrial Science, Kabushiki Kaisha DJK Res Center, NEC Corporation
InventorsAkira Yabe, Hiroyuki Niino, Shozaburo Nagano, Masahiro Hosoi, Takatoshi Kuratsuji, Kazuaki Hotta, Masashi Nakano
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The present invention lies in a process for modifying the surface of a molded article, which process comprises irradiating the surface of a molded article composed of an aromatic polymer or a polymer composition containing said aromatic polymer, with an ultraviolet laser beam having a wavelength of about 150 nm-380 nm at a fluence at least lower than the threshold to modify the surface as compared with the condition before the irradiation. The process makes it possible to modify the condition of the laser beam-irradiated surface portions of the molded article to, for example, a white color or black color, whereby the molded article can be endowed with functions and properties required in its use in various applications.
A process for producing a molded article having a modified surface condition as a result of the irradiation with an ultraviolet laser beam, which process is characterized by irradiating the surface of a molded article composed of an aromatic polymer or a polymer composition containing said aromatic polymer
A process for producing a molded article having an at least partially discolored surface as a result of the irradiation with an ultraviolet laser beam, which process is characterized by irradiating the surface of a molded article composed of an aromatic polymer or a polymer composition containing said aromatic polymer
A method of recording information comprising
A method of recording information comprising
A process for producing a molded article with a modified or etched surface, which process is characterized by irradiating the surface of a molded article composed of a linear polymer composition constituted by a recurring unit containing at least one polycyclic condensed aromatic ring or diphenyl ring, with an ultraviolet light having a wavelength of about 150 nm-about 380 nm.
A process for producing a polyethylene terephthalate molded article having a modified or discolored surface condition as a result of the irradiation with an ultraviolet laser beam, which process is characterized by irradiating the surface of a molded article of an at least uniaxially drawn polyethylene terephthalate
Dependencies are inferred from the claim text.