Deflatable inflatable web

1. A protective packaging device comprising:

a first ply having a plurality of extended portions, each of the plurality of extended portions including a base perimeter enclosing an open base region and an extended surface protruding in one direction from a plane defined by the first ply in a generally flat state, the extended surface having a larger surface area than the open base region; and

a second ply sealed to the first ply around at least a portion of the base perimeter of the open base region of each of the plurality of extended portions, forming sub-chambers on a side of the first ply opposite the protruding direction, wherein each of the first ply and the second ply remain unsealed across the open base region defining regions within the sub-chambers suitable to contain a fluid volume therein,

wherein the sub-chambers are interconnected via one or more intra-chamber channels, allowing each of the sub-chambers to receive and release fluid in response to external pressures.

2. The protective packaging device of claim 1 , wherein groups of the interconnected sub-chambers form chambers.

3. The protective packaging device of claim 2 , wherein the chambers are sealed such that fluid is not added or removed without piercing the first ply or the second ply.

4. The protective packaging device of claim 1 , wherein each of the plurality of extended portions forms a concave surface between the first ply and the second ply.

5. The protective packaging device of claim 1 , wherein the plurality of extended portions form chains of protruding structures.

6. The protective packaging device of claim 5 , wherein the chains of protruding structures extend transversely along the first ply.

7. The protective packaging device of claim 5 , wherein consecutive protruding structures in the chains of protruding structures are staggered relative to one another.

8. The protective packaging device of claim 5 , wherein a first chain of protruding structures extends along the first ply in a first direction and a second chain of protruding structures extends along the first ply in a second direction.

9. The protective packaging device of claim 1 , wherein the one or more intra-chamber channels extend across the protective packaging device from an inflation region such that fluid is injectable into the sub-chambers via the inflation region.

10. The protective packaging device of claim 9 , wherein the sub-chambers are configured to be converted from a low-density configuration with fluid contained within the sub-chambers to a high-density configuration with less fluid contained within the sub-chambers than in the low-density configuration.

11. The protective packaging device of claim 10 , wherein the protective packaging device is converted from the low-density configuration to the high-density configuration by compressing the first ply and the second ply so as to release fluid from the sub-chambers.

12. The protective packaging device of claim 1 , wherein the second ply is sealed to the first ply around the full base perimeter of the open base region of each of the plurality of extended portions, forming isolated sub-chambers on a side of the first ply opposite the protruding direction, wherein each of the first ply and the second ply remain unsealed across the open base region defining regions within the sub-chambers suitable to contain a fluid volume therein.

13. A method for manufacturing a protective packaging device comprising:

forming a first ply having a plurality of extended portions, each of the plurality of extended portions including a base perimeter enclosing an open base region and an extended surface protruding in one direction from a plane defined by the first ply in a generally flat state, the extended surface having a larger surface area than the open base region;

providing a second ply; and

sealing the second ply to the first ply around at least a portion of the base perimeter of the open base region of each of the plurality of extended portions, forming sub-chambers on a side of the first ply opposite the protruding direction, wherein each of the first ply and the second ply remain unsealed across the open base region defining regions within the sub-chambers suitable to contain a fluid volume therein,

wherein the sub chambers are interconnected via one or more intra-chamber channels, allowing each of the sub-chambers to receive and release fluid in response to external pressures.

14. The method of claim 13 , further comprising folding the first ply and the second ply into a C-fold configuration and injecting fluid between the first ply and the second ply so that the fluid flows around the C-fold and into the sub-chambers.

15. The method of claim 13 , wherein each of the plurality of extended portions forms a concave surface between the first ply and the second ply.

16. The method of claim 13 , wherein the plurality of extended portions form chains of protruding structures.

17. The method of claim 16 , wherein the chains of protruding structures extend transversely along the first ply.

18. The method of claim 16 , wherein consecutive protruding structures in the chains of protruding structures are staggered relative to one another.

19. The method of claim 13 , further comprising injecting fluid into the sub-chambers via an inflation region.

20. The method of claim 19 , further comprising converting the protective packaging device from a low-density configuration with fluid contained within the sub-chambers to a high-density configuration with less fluid contained within the sub-chambers than in the low-density configuration.