Assembly of cell culture vessels

1. A cell culture apparatus comprising:

At least a first cell culture chamber and at least a second cell culture chamber, each cell culture chamber comprising:

top surface formed by a gas permeable polymeric film that is impermeable to cell culture liquid

an opposing bottom surface spaced apart from the top surface, and

a side-wall extending between the top surface and the bottom surface,

wherein the bottom surface and the sidewall are formed together as a molded frame, and

wherein a portion of the sidewall proximate to the top surface comprises an infrared absorbent material and a portion of the first sidewall proximate to the bottom surface comprises non-infrared absorbent material;

wherein the first cell culture chamber and the second cell culture chamber are disposed in a stacked arrangement such that the sidewalls of the first cell culture chamber are substantially aligned with the sidewalls of the second cell culture chamber; and

wherein the bottom surface of the first cell culture chamber is spaced apart from the top surface of the second cell culture chamber.

2. The cell culture apparatus of claim 1 , wherein an opening in fluid communication with a cell culture chamber is formed within the sidewall.

3. The cell culture apparatus of claim 1 , wherein the molded frame and the polymeric film comprise polystyrene.

4. The cell culture apparatus of claim 3 , wherein the infrared absorbent material comprises carbon black particles.

5. The cell culture apparatus of claim 1 , wherein a first opening in fluid communication with the first cell culture chamber is formed in the sidewall of the first frame and a second opening in fluid communication with the second cell culture chamber is formed in the sidewall of the frame of the second chamber.

6. The cell culture apparatus of claim 5 , further comprising an access port in fluid communication with the first and second openings.

7. The cell culture apparatus according to claim 1 , further comprising spacers between stacked cell culture chambers to provide the space between the bottom surface of the first cell culture chamber and the top surface of the second cell culture chamber.

8. A method for forming a cell culture apparatus according to claim 1 , the method comprising:

molding a first frame, the first frame comprising an optically transparent bottom surface and a sidewall extending from the bottom surface, sidewall having an optically transparent portion proximate to the bottom surface and an infrared absorbent portion distal to the bottom surface,

wherein the molding comprises:

introducing a first polymeric composition into a mold for forming the transparent bottom surface and the transparent portion of the sidewall and

introducing into the mold a second polymeric composition including an infrared absorbent material for forming the infrared absorbent portion of the sidewall distal to the bottom surface;

contacting the infrared absorbent portion of the sidewall to a gas permeable polymeric film at an interface between the sidewall and the gas permeable polymeric film;

directing infrared radiation to the interface to sufficiently melt the infrared absorbent portion of the first sidewall to sealingly bond the frame to the gas permeable polymeric film such that a first chamber for culturing cells is formed by the first film, the sidewall and the bottom surface.

9. The method of claim 8 , further comprising:

molding a second frame having a structure substantially the same as the first frame, the second frame comprising an optically transparent bottom surface and a sidewall extending from the bottom surface, the sidewall having an optically transparent portion proximate to the bottom surface and an infrared absorbent portion distal to the bottom surface,

wherein the molding comprises:

introducing a first polymeric composition into a mold for forming the transparent bottom surface and the transparent portion of the sidewall of the second chamber and,

introducing into the mold a second polymeric composition including an infrared absorbent material for forming the infrared absorbent material for forming the infrared absorbent portion of the sidewall distal to the bottom surface; and

contacting the infrared absorbent portion of the sidewall to a gas permeable polymeric film at an interface between the sidewall and gas permeable polymeric film;

directing infrared radiation to the interface to sufficiently melt the infrared absorbent portion of the sidewall to sealingly bond the frame to the gas permeable polymeric film such that a second chamber for culturing cells is formed by the gas permeable polymeric film, the sidewall and the bottom surface.

10. The method of claim 8 , wherein the first frame and the first film comprise polystyrene.

11. The method of claim 10 , wherein the infrared absorbent portion of the sidewall comprises carbon black particles.

12. The method of claim 8 , further comprising forming a first opening in the sidewall of the first chamber.

13. The method of claim 12 , wherein the opening is formed in the first sidewall during the molding of the first frame.

14. The method of claim 9 , wherein the infrared absorbent material comprises carbon black particles.

15. The method of claim 9 , further comprising

forming a second opening in the sidewall of the second frame.

16. The method of claim 15 , further comprising:

stacking the first and second chambers such that the first and second sidewalls are substantially aligned, the bottom surface of the first frame is spaced apart from the gas permeable film of the second chamber, and a tracheal chamber is formed between the bottom surface of the first frame and the gas permeable film of the second chamber.

17. The method of claim 16 , further comprising:

aligning first and second openings of an adaptor with the first opening of the first sidewall and the second opening of the second sidewall;

contacting the adaptor with first and second sidewalls to form first and second interfaces between the first sidewall and the adaptor and the second sidewall and the adaptor; and

directing infrared radiation at the first and second interfaces between the first sidewall and the adaptor and the second sidewall and the adaptor to sufficiently melt the infrared absorbent portion of the first and second sidewalls to bond the first and second frames to the adaptor.

18. The method of claim 17 , wherein the adaptor comprises an access port forming fluid communication pathways between the adapter and the first cell culture chamber through the first openings of the adaptor, through the first opening of the first sidewall into the first cell culture chamber; and

between the adapter and the second cell culture chamber through the second opening of the adaptor, through the second opening of the second sidewall into the second cell culture chamber.

19. The method of claim 18 , wherein the adapter comprises a neck piece defining an access port to the adaptor such that the access port is in fluid communication with the first and second openings of the adaptor.