US 11,780,127 B2
Foaming and dyeing integrated production method for polymer material product
Hancha Liu, Guangzhou (CN); Yuan Liang, Guangzhou (CN); Shuhua WU, Guangzhou (CN); Jianyu Xu, Guangzhou (CN); Guohang Yang, Guangzhou (CN); Jitao Xu, Guangzhou (CN); Jiaqi Liang, Guangzhou (CN); Yuehua Liu, Guangzhou (CN); and Yuhao Chen, Guangzhou (CN)
Assigned to GUANGZHOU GREEN AND HEALTH BIOTECH CO., LTD., Guangzhou (CN)
Filed by GUANGZHOU GREEN AND HEALTH BIOTECH CO., LTD., Guangzhou (CN)
Filed on Jun. 14, 2022, as Appl. No. 17/839,507.
Application 17/839,507 is a division of application No. 17/016,400, filed on Sep. 10, 2020.
Prior Publication US 2022/0305703 A1, Sep. 29, 2022
Int. Cl. B29C 44/02 (2006.01); B29C 67/00 (2017.01); B29C 44/42 (2006.01); B29K 105/04 (2006.01); B29K 105/00 (2006.01)
CPC B29C 44/02 (2013.01) [B29C 44/424 (2013.01); B29C 67/0007 (2013.01); B29K 2105/0032 (2013.01); B29K 2105/04 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A foaming and dyeing integrated production method for a polymer material product, comprising the following steps of:
(1) material loading: putting a polymer material preform into a foaming and dyeing kettle, and loading dye for dyeing into a dyeing circulation module;
(2) supercritical fluid dyeing: gasifying CO2 from a fluid liquefaction a nd storage module sequentially through pressurization in a fluid pressurization delivery module and heating in a fluid heating module and injecting the CO2 into the foaming and dyeing kettle, s topping pressurization when the CO2 reaches a supercritical state meeting requirements of a dyeing process, then starting the dyeing circulation module to begin a dyeing circulation process in which the CO2 in the supercritical state enters the dyeing circulation module and dissolves the dye in the dyeing circulation module, the CO2 carrying the dye returns to the foaming and dyeing kettle to dye the polymer material preform in the foaming and dyeing kettle a desired color, when dyeing requirements are met, the CO2 flows out of the foaming and dyeing kettle and is subjected to pressure re lease in a pressure control module, the CO2 is separated from the dye remaining after dyeing in a dye separation module, and the CO2 with the dye separated enters the fluid liquefaction and storage module to be liquefied a nd stored;
(3) one-step foaming: when the dyeing process is finished, injecting CO2 and/or N2 pressurized in the fluid pressurization de livery module and heated in the fluid heating module into the foaming and dyeing kettle according to a proportion of fluid required for foaming, and stopping pressurization a nd starting foaming operation when requirements of a foaming process are met; and
(4) unloading: when the foaming process is finished, opening the foaming and dyeing kettle, and ta king out a foamed a nd dyed polymer material product in the foaming and dyeing kettle.