To enable the uniform mixing of curing agent by a method wherein compressed air is introduced into a nozzle at the rear part of the adding position of the liquid curing agent with respect to the tip end of the nozzle.
A curing agent adding device 2, equipped at a given distance from the tip end of a nozzle 1, adds liquid curing agent, supplied from a curing agent supplying pipe 4, into monolithic material, passing through a plurality of fine holes 6, penetrating the side wall of the nozzle 1, and flowing through the inside of the nozzle 1, after entering into an annular gap unit 5, formed of a jacket provided around the outer periphery of the nozzle 1. On the other hand, a compressed air introducing device 7, introducing compressed air into the rear part of the adding position of the liquid curing agent, introduces the compressed air into the unshaped material, flowing through a plurality of fine holes 16 penetrating the side wall of the nozzle 1, after entering an annular gap unit 15, formed of a jacket provided around the outer periphery of the nozzle 1. In this case, a plurality of fine holes 6, 16 are provided in the peripheral direction of the nozzle and the liquid curing agent is added by compressed air and the like with a high speed.
KATAYAMA MASATO
NAKAZAWA YOSHITAKA
SHIRAMA TOUICHI
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