专利名称：OPTICAL DISC七月初二
死亡九分钟
发明人：FUJIMORI YOSHINORI,NAKAGAWA TOSHIHARU,YUASA FUMIHIKO
申请号：JP10771883
申请日：19830617
橡皮筋编手链梦见风很大公开号：JPS60635A
面试评语公开日：
19850105
家人团聚
专利内容由知识产权出版社提供
摘要：PURPOSE:To obtain an inexpensive and stable replica with short processing time and high accuracy by providing a gradient of molecular weight to a molding in the broadwi direction and arranging a layer having a large molecular weight at the outside in an optical disc constituted by sticking two injection moldings on the surface of which signals formed by ruggedness are provided while opposing the signal sides of the two moldings. CONSTITUTION:An acrylic resin with low fluidity and high heat resistance is injection-molded, e.g., at a cylinder temperature of 290 deg.C, a metallic mold temperature of 70-80 deg.C and a cycle of 30c in the 1st injection cylinder and metallic mold system by using a double stage type injection molding machine so as to form a disc ba without no ruggedness signal on its surface, having a thickness of 1.0mm. and a diameter of 300phi. Then an acrylic resin with high fluidity is injection-molded on the disc ba, e.g., at a cylinder temperature of 250-270 deg.C, a metallic mold temperature of 60-70 deg.C and a cycle of 30c in the 2nd injection cylinder metallic mold system so as to transfer minute ruggedness signals of a stamper provided on the metallic mold in advance with fidelity thereby forming an incorporated molding and the gradient of the molecular weight in the broadwi direction.
异地恋情侣暖心小故事申请人：TOSHIBA KK我想要看
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