Gas Permeable Material

Patent metadata

Field	Value
Publication number	US-2020339927-A1
Application number	US-202016928296-A
Country	US
Kind code	A1
Filing date	Jul 14, 2020
Priority date	Dec 22, 2014
Publication date	Oct 29, 2020
Grant date	—

Abstract

The invention describes a gas permeable fluoropolymer and silicone material used in the construction of cell culture bags.

First claim

What is claimed is:

1 . An oxygen-permeable film comprising:
a first polymer layer having a thickness in the range of about 0.01 mm to about 5 mm, the first polymer layer being a silicone layer; and a second fluid contact layer having a thickness in the range of about 0.01 mm to about 0.1 mm, the second fluid layer being an FEP layer, wherein the first polymer layer and the second fluid contact layer are adhered together, and wherein the oxygen permeable film has an oxygen permeability of at least 2000 cc/m 2 per day.

2 . The oxygen-permeable film according to claim 1 , wherein the first polymer layer has a thickness in the range of 0.1 to 1 mm.

3 . The oxygen-permeable film according to claim 1 , wherein the first polymer layer is a layer of cured liquid silicone rubber.

4 . The oxygen-permeable film according to claim 1 , wherein the first polymer layer is a layer of high consistency rubber.

5 . The oxygen-permeable film according to claim 1 , wherein the FEP layer has a thickness in the range of 0.01 to 0.04 mm.

6 . The oxygen-permeable film according to claim 1 , wherein a primer is used in the adhesion of first polymer layer to the FEP layer.

7 . The oxygen-permeable film according to claim 1 , wherein the FEP layer is C-treated at a surface adhered to the first polymer layer.

8 . The oxygen permeable film according to claim 1 , wherein the FEP layer is C-treated at a surface adhered to the first polymer layer, wherein the first polymer layer is a layer of cured liquid silicone rubber, and wherein a primer is used in the adhesion of first polymer layer to the FEP layer.

9 . The oxygen-permeable film according to claim 1 , wherein the FEP layer is treated at a surface adhered to the first polymer layer with a treatment selected from corona discharge, plasma treatment, etching, and combinations thereof.

10 . The oxygen-permeable film according to claim 1 , wherein FEP layer has a TOC in water of less than 0.1 mg/cm 2 .

11 . An oxygen-permeable container comprising an oxygen permeable film that comprises:
an outer polymer layer having a thickness in the range of about 0.01 mm to about 5 mm, the outer polymer layer being a silicone layer; and an inner fluid contact layer having a thickness in the range of about 0.01 mm to about 0.1 mm, the inner fluid layer being an FEP layer, wherein the outer polymer layer and the inner fluid contact layer are adhered together, and wherein the oxygen permeable film has an oxygen permeability of at least 2000 cc/m 2 per day.

12 . The container according to claim 11 , wherein the container is in the form of a bag, flask, or tube.

13 . The container according to claim 11 , wherein the container is in the form of a cell culture bag comprising the oxygen-permeable film as a wall thereof.

14 . The container according to claim 11 , wherein the outer polymer layer has a thickness in the range of 0.1 to 1 mm.

15 . The container according to claim 11 , wherein the outer polymer layer is a layer of cured liquid silicone rubber.

16 . The container according to claim 11 , wherein the outer polymer layer is a layer of cured high consistency rubber.

17 . The container according to claim 11 , wherein the FEP layer has a thickness in the range of 0.01 to 0.04 mm.

18 . The container according to claim 11 , wherein a primer is used in the adhesion of outer polymer layer to the FEP layer.

19 . The container according to claim 11 , wherein the FEP layer is C-treated at a surface adhered to the outer polymer layer.

20 . The container according to claim 11 , wherein the FEP layer is C-treated at a surface adhered to the outer polymer layer, wherein the outer polymer layer is a layer of cured liquid silicone rubber, and wherein a primer is used in the adhesion of outer polymer layer to the FEP layer.

21 . The container according to claim 11 , wherein the FEP layer is treated at a surface adhered to the first polymer layer with a treatment selected from corona discharge, plasma treatment, etching, and combinations thereof.

22 . The container according to claim 11 , wherein the container comprises at least one sealable access port.

23 . The container according to claim 9 , wherein the inner fluid contact layer has a TOC in water of less than 0.1 mg/cm 2 .

24 . A method to cultivate cells in an oxygen permeable container according to claim 11 , the method comprising:
a) adding media and cells to the container; and b) incubating the container.

Assignees

• Saint Gobain Performance Plastics Corp

Inventors

• Clark Sarah Louise
• Lundgren Natasha Anna
• Tzivanis Michael John
• Zhu Aijun

Classifications

• B32B2439/00

  Containers; Receptacles · CPC title

• B32B2307/50

  having particular mechanical properties · CPC title

• B32B2307/714

  Inert, i.e. inert to chemical degradation, corrosion · CPC title

• B32B27/24

  using solvents or swelling agents · CPC title

• B32B27/302

  comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers · CPC title