US 12,337,284 B2
Spiral wound filtration device and methods of manufacture
Nathan Landry, Burlington, MA (US); Gregory Straeffer, Burlington, MA (US); and Matthew Natale, Burlington, MA (US)
Assigned to EMD Millipore Corporation, Burlington, MA (US)
Appl. No. 17/292,981
Filed by EMD Millipore Corporation, Burlington, MA (US)
PCT Filed Dec. 5, 2019, PCT No. PCT/US2019/064580
§ 371(c)(1), (2) Date May 11, 2021,
PCT Pub. No. WO2020/123243, PCT Pub. Date Jun. 18, 2020.
Claims priority of provisional application 62/780,634, filed on Dec. 17, 2018.
Claims priority of provisional application 62/780,689, filed on Dec. 17, 2018.
Claims priority of provisional application 62/779,867, filed on Dec. 14, 2018.
Claims priority of provisional application 62/779,860, filed on Dec. 14, 2018.
Prior Publication US 2022/0001334 A1, Jan. 6, 2022
Int. Cl. B01D 65/00 (2006.01); B01D 63/10 (2006.01)
CPC B01D 65/003 (2013.01) [B01D 63/101 (2022.08); B01D 63/103 (2013.01); B01D 2313/041 (2022.08); B01D 2313/042 (2022.08); B01D 2323/42 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A spiral wound membrane module, comprising, in an unwound condition, a perforated core having an axially extending internal bore; at least one membrane packet comprising a folded membrane sheet defining a first outer face, a first inner face, a second outer face and a second inner face, the fold of said folded membrane sheet being a leading edge of said membrane packet, and a feed sheet positioned between said first and second inner faces so as to be sandwiched by the folded membrane sheet, said folded membrane sheet comprising a predefined, compressible wedge-shaped fluid impermeable support coupled to said leading edge of said membrane packet; a first permeate screen adjacent said first outer face of said membrane sheet defining a first permeate channel; a second permeate screen adjacent said second outer face of said membrane sheet defining a second permeate channel.