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    • 2. 发明授权
    • Method for assaying iron-exposed portion of coated steel plate or
processed product thereof
    • 涂覆钢板或其加工产品的铁暴露部分的测定方法
    • US4332646A
    • 1982-06-01
    • US179152
    • 1980-08-18
    • Michiko TsurumaruYukio SuzukiAtsushi Nunokawa
    • Michiko TsurumaruYukio SuzukiAtsushi Nunokawa
    • G01N17/00G01N27/26G01N27/416G01N27/49G01N27/00
    • G01N27/49
    • Disclosed is a method for assaying an iron-exposed portion of a coated steel plate or a processed product thereof, which comprises bringing a surface, to be measured, of the coated steel plate or processed product thereof, a reference electrode and a counter electrode into contact with a buffer solution having a pH value of from 9.0 to 11.0, effecting in this state electrolysis between the counter electrode and the coated steel plate or processed product thereof under such conditions that the voltage of the coated steel plate or processed product thereof to the reference electrode is 0.8 to 1.5 volts as calculated as a saturated calomel electrode, and evaluating the iron-exposed portion by measuring an electric current flowing between the counter electrode and the coated steel plate or processed product thereof or by observing precipitation and deposition of an oxide or hydrated oxide of iron. According to this method, an iron-exposed portion of a coated steel plate or a processed product thereof can selectively be detected and assayed and evaluated precisely without any substantial influence on a metal present as the coating layer very easily by using a simple measurement apparatus. The results obtained according to this method are well in agreement with the results of the actual test made on cans or other processed products of the coated steel plate.
    • 公开了一种用于测定涂覆钢板或其加工产品的铁暴露部分的方法,其包括将被测量的表面被测钢板或其加工产品的参比电极和对电极放入 与pH值为9.0〜11.0的缓冲溶液接触,在这种状态下在对电极和涂覆钢板之间进行电解或其加工产物,其条件是使涂覆钢板或其加工产品的电压与 参考电极是以饱和甘汞电极计算的0.8至1.5伏特,并且通过测量在相对电极和涂覆钢板或其加工产物之间流动的电流或通过观察氧化物的沉淀和沉积来评估铁暴露部分 或水合氧化铁。 根据该方法,通过使用简单的测量装置,可以非常容易地选择性地对涂覆钢板或其加工产品的铁暴露部分进行精确的检测和评估,而不会对作为涂层的金属存在任何实质的影响。 根据该方法获得的结果与涂覆钢板的罐头或其他加工产品的实际测试结果一致。
    • 7. 发明授权
    • Bonded can of key-opening type and process for production thereof
    • 钥匙打开型的保护罐及其制造方法
    • US4553682A
    • 1985-11-19
    • US597859
    • 1984-04-09
    • Michiko TsurumaruSeiichi NakazatoAtsushi NunokawaHiroshi UenoSeishichi Kobayashi
    • Michiko TsurumaruSeiichi NakazatoAtsushi NunokawaHiroshi UenoSeishichi Kobayashi
    • B21D51/26B21D51/38B21D51/44B65D8/04B65D8/22B65D17/28B65D17/36B65D
    • B21D51/2676B21D51/386B65D17/22B65D17/24
    • Disclosed is a bonded can of the key-opening type comprising a coated metal blank and a seam formed by lap-bonding outer and inner end edge portions of the coated metal blank to each other by a tape of a thermoplastic resin adhesive, wherein the adhesive is a polyamide type or polyester type adhesive, the inner end edge portion forming the seam of the bonded can is completely covered with the adhesive tape, the outer edge portion has a winding-starting tongue piece integrated therewith, a plurality of scores are formed on the outer surface of the coated metal blank from the base of the tongue piece along the entire circumference inclusive of the seam, the scores have a knife angle of 45.degree. to 120.degree. and a depth corresponding to 8 to 45% of the thickness of the metal blank, a coating of an epoxy resin having a thermal softening point of 65.degree. to 150.degree. C. as measured according to the thermomechanical method is formed at least at the seam-forming part on the outer surface and said epoxy resin coating forms a continuous layer adhering closely to the metal blank even in the portion of said scores.
    • 本发明公开了一种按键开口型的接合罐,包括涂覆的金属坯料和通过热塑性树脂粘合剂的带将涂覆的金属坯料的外端和内端边缘部分彼此搭接而形成的接缝,其中粘合剂 是聚酰胺型或聚酯型粘合剂,形成接合罐的接缝的内端边缘部分完全被粘合带覆盖,外边缘部分具有与其成一体的卷绕起始舌片,多个刻痕形成在 涂层金属坯料的外表面从舌片的底部沿着包括接缝在内的整个圆周,分数的刀角为45°至120°,深度对应于厚度的8至45% 至少在外表面的接缝形成部分上形成根据热机械方法测定的热软化点为65〜150℃的环氧树脂的涂层,所述ep 氧树脂涂层即使在所述分数的部分中也形成了紧密附着在金属坯料上的连续层。