	US 11,986,776 B2
	Method for forming a body comprising at least one through-going passage
Henrik Hemmen, Oslo (NO); Tina Bryntesen, Oslo (NO); Linn Cecilie Sørvik, Oslo (NO); Marie-Audrey Marguerite Adrienne Raux, Oslo (NO); and Guttorm Johan Osborg, Oslo (NO)
Assigned to CONDALIGN AS, Oslo (NO)
Appl. No. 16/495,221
Filed by Condalign AS, Oslo (NO)
PCT Filed Mar. 28, 2018, PCT No. PCT/EP2018/025075 § 371(c)(1), (2) Date Sep. 18, 2019, PCT Pub. No. WO2018/177607, PCT Pub. Date Oct. 4, 2018.
Claims priority of application No. 20170513 (NO), filed on Mar. 29, 2017.
Prior Publication US 2021/0187444 A1, Jun. 24, 2021
Int. Cl. B01D 69/02 (2006.01); B29C 71/00 (2006.01); B29K 23/00 (2006.01); B29K 69/00 (2006.01); B29K 75/00 (2006.01); B29K 105/00 (2006.01); B29K 307/04 (2006.01); B29K 309/02 (2006.01); B29K 309/08 (2006.01); C08J 5/18 (2006.01)

CPC B01D 69/02 (2013.01) [B29C 71/0081 (2013.01); C08J 5/18 (2013.01); B29K 2023/06 (2013.01); B29K 2023/12 (2013.01); B29K 2069/00 (2013.01); B29K 2075/00 (2013.01); B29K 2105/251 (2013.01); B29K 2307/04 (2013.01); B29K 2309/02 (2013.01); B29K 2309/08 (2013.01)]

18 Claims

1. A method for forming a body comprising a plurality of through-going passages, said method comprising the steps of:

a) providing a mixture comprising a plurality of liquid pockets inside a curable matrix, wherein the liquid pockets are in the form of droplets;

b) forming said body by stretching the liquid pockets to extend from a first surface of said body to a second surface of said body by subjecting said mixture to a first alternating voltage having a first frequency, thereby forming said plurality of through-going passages wherein each through-going passage lacks curable matrix, and

c) curing said curable matrix into a cured matrix,

wherein the mixture of step a) is provided by application of a second alternating voltage having a second frequency to a mixture of liquid and said curable matrix,

wherein each through-going passage of the plurality of through-going passages in cross-section has a shape of a column, an ellipsoid, a spheroid, an hourglass, or a meniscus.