Process for making a fluid processing module

The process for forming a fluid processing module comprising at least one feed port and at least one permeate port,

• forming at least two fluid permeable spacer layers having a feed port and at least one membrane filter layer having a permeate port, wherein said at least two spacer layers are positioned alternately with said at least one filter layer in a vertical direction,
• providing at least one thermoplastic section secured to at least one end of said spacer layers extending into a permeate port in a configuration such that when said at least one section is melted, sealing of said spacer layers in said permeate port is effected such that liquid in said permeate port is not admixed with liquid in a feed port,
• providing at least one thermoplastic section secured to at least one end of said at least one filter layer extending into a feed port in a configuration such that when said at least one section is melted, sealing of said filter layers in said feed port is effected such that liquid in said feed port is not admixed with liquid in said permeate port,
• and heat sealing said at least one thermoplastic section in said ports by extending a radiant heating element in said ports and energizing said heating element to effect heating of said at least one thermoplastic section in said ports to effect heating of all of the thermoplastic sections in said port simultaneously.

The process for forming a fluid processing module comprising at least one feed port, at least one retentate port and at least one permeate port,

• forming at least one fluid permeable spacer layers having a feed port and at least two membrane filter layer having a permeate port wherein said at least one spacer layer is positioned alternately with said at least two filter layers in a vertical direction,
• providing a thermoplastic section secured to an end of each of said at least two filter layers extending into the feed port in a configuration such that when said thermoplastic sections are melted, sealing of said filter layers in said feed port is effected such that liquid in said feed port is not admixed with liquid in a permeate port,
• providing a thermoplastic section secured to an end of each said at least two filter layers extending into a retentate port in a configuration such that when said thermoplastic sections are melted, sealing of said filter layers in said retentate port is effected such that liquid in said retentate port is not admixed with liquid in said permeate port,
• and heat sealing said at least one thermoplastic section in said ports by extending a radiant heating element in said ports and energizing said heating element to effect heating of said thermoplastic sections in said ports to effect heating of all of the thermoplastic section in said port simultaneously.