| 摘要 |
PROBLEM TO BE SOLVED: To provide a high-reliability gasket for an alkali dry cell in which immunity of the alkali dry cell to an electrolyte is improved and a thin part including a function of an explosion-proof safety valve is normally broken while using a polyamide resin composition with less elongation.SOLUTION: The gasket for the alkali dry cell is formed by using a polyamide 610 resin composition and comprises the thin part including the function of the explosion-proof safety valve partially. The thin part is formed with thickness equal to or less than 0.4 mm. The polyamide 610 resin composition is a resin composition which contains a polyamide 610 resin as a main component and contains a crystal nucleus agent, of which a tensile elongation rate of a tester in the case where the tester with thickness of 1 mm is prepared, is 300% or less, and which becomes too fine to observe a spherocrystal when a cross section of the thin part is observed by a polarization microscope of 200 magnifications. |
