Membrane Laminate

Patent metadata

Field	Value
Publication number	US-2017056830-A1
Application number	US-201615351538-A
Country	US
Kind code	A1
Filing date	Nov 15, 2016
Priority date	May 17, 2007
Publication date	Mar 2, 2017
Grant date	—

Abstract

A laminate is provided comprising at least one polysulfone and/or polyethersulfone porous membrane heat bonded to a polyvinylidene fluoride substrate.

First claim

What is claimed:

1 . A process of forming a filtration device comprising providing a at least one porous membrane selected from the group consisting of polysulfone, polyethersulfone, blends thereof and copolymers thereof; providing a first and a second support plate wherein the first and second support plates are formed of PVDF, the support plates having a first surface facing each other and a second surface opposite the first surface of each plate and the plates having at least one port formed from the first surface to the second surface of each plate respectively; heat bonding the at least one membrane to a first surface of the first support plate; and heat bonding the first surface of the first plate to the first surface of the second plate in an area outside of the area of the first surface of the first plate to which the membrane has been bonded.

2 . The process of claim 1 wherein the first surface of the first plate is bonded to the first surface of the second plate about the periphery of each.

3 . The process of claim 1 further comprising providing a heating element heated to a temperature of from about 490° F. (254° C.) to about 530° F. (277° C.) and applying the heating element to the membrane at a desired bond area which overlaps with at least a portion of the first surface of the first support plate and removing the heating element and allowing the bond to cool.

4 . The process of claim 1 further comprising providing a heating element heated to a temperature of from about 490° F. (254° C.) to about 530° F. (277° C.); applying the heating element to the membrane at a desired bond area which overlaps with at least a portion of the first surface of the first support plate with sufficient pressure to assure intimate contact between the membrane and the first surface of the support plate and removing the heating element and allowing the bond to cool.

5 . The process of claim 1 further comprising providing a heating element heated to a temperature of from about 284° F. (140° C.) and about 530° F. (277° C.) and applying the heating element to the first surface of the second support plate at a desired bond area; removing the heating element and contacting the first surface of the second support plate to the first surface of the first plate.

6 . The process of claim 1 further comprising providing a heating element heated to a temperature of from about 284° F. (140° C.) and about 530° F. (277° C.) and applying the heating element to the first surface of the second support plate at a desired bond area; removing the heating element and contacting the first surface of the second support plate to the first surface of the first plate wherein the first surface of the first plate is bonded to the first surface of the second plate about the periphery of each.

Assignees

• Emd Millipore Corp

Inventors

• Rautio Kevin

Classifications

• B29L2031/14

  Filters {(optical filters B29L2011/0066, sieves or screens B29L2031/737)} · CPC title

• B29C66/919

  characterised by specific temperature, heat or thermal flux values or ranges (specific electrical resistance values B29C66/81262) · CPC title

• B29C66/91431

  the temperature being kept constant over time · CPC title

• B29C66/929

  characterized by specific pressure, force, mechanical power or displacement values or ranges · CPC title

• B01D63/084

  at least one flow duct intersecting the membranes · CPC title