| 摘要 |
PROBLEM TO BE SOLVED: To provide a ultrafilter for latex, which is capable of liquid feeding the latex having unstable properties such as the mechanical property without aggravating its dispersed state, removing impurities such as an inorganic salt and simultaneously highly concentrating the latex. SOLUTION: This ultrafilter for highly concentrating latex and removing impurities from the latex by continuously pumping, circulating and passing dilution water and the latex which contains impurities into and through an ultrafilter membrane module comprises: a latex stock tank 1 provided with each liquid feeding pipe of the dilution water and surfactant liquid; a diaphragm pump 2 for liquid feeding the latex from the tank into the ultrafilter membrane module; an opening degree adjusting valve 3 disposed at an outlet side of the ultrafilter membrane module and a device 4 for measuring the weight of permeation water disposed at the permeation water outlet of the ultrafilter membrane module.
|
