Acidic gas separation laminate and acidic gas separation module provided with laminate
US-2016136572-A1 · May 19, 2016 · US
Spacer film with integrated lamination strip
US2019282964A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2019282964-A1 |
| Application number | US-201716318195-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jul 17, 2017 |
| Priority date | Jul 18, 2016 |
| Publication date | Sep 19, 2019 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
Spacers for filtration membranes that are formed from perforated films. The spacer include unperforated regions, which can serve as integrated lamination strips, advantageously omitting the need for separate lamination steps required with woven and nonwoven spacer fabrics while also providing a spacer with a uniform thickness.
First claim
Opening claim text (preview).
What is claimed is: 1 . A spacer for a filter, comprising: a film having perforations substantially located in a central region and at least two unperforated regions located on opposing edges of the film, the unperforated regions being laminable to a filtration membrane. 2 . The spacer of claim 1 , wherein the film comprises perfluoroalkoxy polymer, polyethylene, polyvinylidene fluoride, polypropylene, polyethylene terephthalate, polysulfone, polytetrafluoroethylene, polyamide, polycarbonate, or polyimide. 3 . The spacer of claim 1 , wherein the film comprises perfluoroalkoxy polymer. 4 . The spacer of claim 1 , wherein the film has an unlaminated thickness from about 20 μm to about 180 μm. 5 . The spacer of claim 1 , wherein the film has an unlaminated thickness from about 30 μm to about 55 μm. 6 . A filter element, comprising: at least one spacer of claim 1 ; and a filtration membrane adjacent to the at least one spacer, the filtration membrane and at least one spacer pleated or rolled about a core. 7 . The filter element of claim 6 , wherein the film comprises perfluoroalkoxy polymer, polyethylene, polyvinylidene fluoride, polypropylene, polyethylene terephthalate, polysulfone, polytetrafluoroethylene, polyamide, polycarbonate, or polyimide. 8 . The filter element of claim 6 , wherein the film comprises perfluoroalkoxy polymer. 9 . The filter element of claim 6 , wherein the filtration membrane comprises perfluoroalkoxy polymer, polyethylene, polyvinylidene fluoride, polypropylene, polyethylene terephthalate, polysulfone, polytetrafluoroethylene, polyamide, polycarbonate, or polyimide. 10 . A filter, comprising: a housing; a filtration membrane; and at least one spacer adjacent to the filtration membrane, the spacer comprising a film having perforations substantially located in a central region and at least two unperforated regions located on opposing edges of the film, wherein the unperforated regions are laminated to the filtration membrane and the filtration membrane and at least one spacer are pleated or rolled about a core within the housing. 11 . The filter of claim 10 , wherein the unperforated regions of the film are bonded to the housing. 12 . The filter of claim 10 , wherein the at least one spacer laminated to the filtration membrane prevents shrinkage of the filtration membrane during operation. 13 . The filter of claim 10 , wherein the wherein the film comprises perfluoroalkoxy polymer, polyethylene, polyvinylidene fluoride, polypropylene, polyethylene terephthalate, polysulfone, polytetrafluoroethylene, polyamide, polycarbonate, or polyimide. 14 . The filter element of claim 10 , wherein the film comprises perfluoroalkoxy polymer. 15 . The filter element of claim 10 , wherein the filtration membrane comprises perfluoroalkoxy polymer, polyethylene, polyvinylidene fluoride, polypropylene, polyethylene terephthalate, polysulfone, polytetrafluoroethylene, polyamide, polycarbonate, or polyimide.
Assignees
Inventors
Classifications
Cartridge types · CPC title
on the feed side · CPC title
- B01D63/14Primary
Pleat-type membrane modules · CPC title
Polytetrafluoroethylene · CPC title
on the permeate side · CPC title
Patent family
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US2019282964A1 cover?
- Spacers for filtration membranes that are formed from perforated films. The spacer include unperforated regions, which can serve as integrated lamination strips, advantageously omitting the need for separate lamination steps required with woven and nonwoven spacer fabrics while also providing a spacer with a uniform thickness.
- Who is the assignee on this patent?
- Entegris Inc
- What technology area does this patent fall under?
- Primary CPC classification B01D63/14. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu Sep 19 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).