Compound thread for producing the braided packing, formation manner of braided packing and compound thread

摘要

(57) Abstract The compound thread for the braided packing which is used for sealing the pump or the valve revolving shaft normal (5) is disclosed. The braided packing it can do various environments which differ and to use because of industrial field. The foaming poly tetrafluoroethylene to which the gasket of this invention at the 1st material (1) outside is formed had with formation and the core which is formed from the 2nd material, with the example of this invention as for the 1st material impregnation could point the graphite (PTFE) is, the 2nd material is the aramide filament. As for the compound thread which is obtained by this configuration with the high mechanical strength where the high resistance where the temperature conductivity due to foaming PTFE which impregnation it could point the graphite, low it confronts frictional Characteristic and chemical erosion and it is by aramide it maintains. This compound thread is done in order to form the gasket, blade, there are no times when the uneven wear where PTFE contacts the axis regarding the gasket, with technology has occurred until recently occurs.