PURPOSE: To improve heat resisting, compression restoring and stress relieving characteristics without any use of asbestos by providing both sides of a hook erection plate with a vulcanized substance layer of composition containing the predetermined amount of a gaseous phase growth carbon fiber, heat resisting organic fiber, rubber and a filler, and a chemical.
CONSTITUTION: A vulcanized rubber layer 2 containing fiber is formed on both sides of a hook erection steel plate 1 having a hook at both sides. As the hook erection plate 1, a steel known as best can be used, and the vulcanized rubber layer 2 containing fiber is constituted with a vulcanized substance having a composition of 2 to 20 wt%of gaseous phase growth carbon fiber, 1 to 15 wt% of heat resisting organic fiber, 3 to 20 wt% of rubber, 30 to 90 wt% of a filler and a rubber chemical. For the gaseous phase growth carbon fiber, a fabric carbon material or the like made via the gaseous phase growth of hydrocarbon or the like in the existence of a catalyst is used. For the heat resisting organic fabric, aromatic polyamide, aromatic polyester or the like is used. Also, acrylic rubber, styrene butadiene rubber or the like is used for the rubber, while talc, clay or the like is used as a filler.
NAKAO SADAO
NAKAYAMA KENJI
