US 12,460,053 B2
Method for producing resin particles and dryer
Takahisa Tatekawa, Kanagawa (JP); Kiyohiro Yamanaka, Kanagawa (JP); and Shinichi Murase, Kanagawa (JP)
Assigned to FUJIFILM Business Innovation Corp., Tokyo (JP)
Filed by FUJIFILM Business Innovation Corp., Tokyo (JP)
Filed on Jul. 22, 2022, as Appl. No. 17/871,459.
Claims priority of application No. 2021-181361 (JP), filed on Nov. 5, 2021.
Prior Publication US 2023/0143655 A1, May 11, 2023
Int. Cl. F26B 17/10 (2006.01); C08J 3/00 (2006.01); F26B 21/06 (2006.01)
CPC C08J 3/00 (2013.01) [F26B 17/107 (2013.01); C08J 2325/06 (2013.01); C08J 2333/08 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for producing resin particles, the method comprising:
drying resin particles in a wet state by passing, without circulating, the resin particles through a drying tube together with a first gas, the resin particles being ones that undergo pressure-induced phase transition, wherein:
the drying tube has an inlet through which the resin particles are fed into the drying tube, at least one gas blowhole through which a second gas is blown over the resin particles passing through the drying tube, and an outlet through which the resin particles are ejected from the drying tube; and
the second gas is blown out of the gas blowhole at a velocity of 50 m/s or more.