| 摘要 |
The present invention relates to a braiding yarn made of expanded graphite for a gland packing which is to be used in a shaft seal part of a fluid apparatus or the like. In the braiding yarn made of expanded graphite of the invention, a braiding yarn base material (3) of the inner-reinforce type is used in which a plurality of reinforcing fibers (2, 2) are embedded in the longitudinal direction in an expanded graphite tape (1) of a predetermined width, with forming gaps in the width direction. A twisting process is performed in a state where both the end portions (1a, 1b) in the width direction of the expanded graphite tape (1) are bent so that both the end portions (1a, 1b) in the width direction of the expanded graphite tape (1) are directed toward the inner side in the width direction of the braiding yarn base material (3). Alternatively, while twisting the braiding yarn base material (3), both the end portions (1a, 1b) in the width direction of the expanded graphite tape (1) are bent so that both the end portions (1a, 1b) in the width direction of the expanded graphite tape (1) are directed toward the inner side in the width direction of the braiding yarn base material (3). According to the invention, flaking of expanded graphite particles during a process of twisting the braiding yarn made of expanded graphite is reduced or prevented from occurring. <IMAGE> |
