FLEXIBLE BLADDER TANKS INCLUDING POLYKETONE
The present disclosure provides a bladder for containing a liquid. The bladder includes a polyketone layer and a fitting in contact with the polyketone layer.
1 . A bladder for containing a liquid, the bladder comprising:
a polyketone layer; and
a fitting in contact with the bladder.
2 . The bladder of claim 1 , wherein the polyketone layer comprises a polyketone in a range of from about 2.5 wt % to about 100 wt % of the polyketone layer.
3 . The bladder of claim 2 , wherein polyketone comprises an aliphatic polyketone, an aromatic polyketone, or mixtures thereof.
4 . The bladder of any one of claims 2 , wherein the polyketone is a copolymer and further comprises a repeating unit derived from ethylene, propylene, vinyl chloride, vinylidene chloride, styrene, acrylonitrile, tetrafluoroethylene, methyl methacrylate, vinyl acetate, isoprene, chloroprene, or a mixture thereof.
5 . The bladder of any one of claims 1 , wherein the polyketone layer comprises a multi-layer structure.
6 . The bladder of claim 5 , wherein each layer of the multi-layer structure comprises a polyketone.
7 . The bladder of any one of claims 1 , further comprising a reinforcing layer adjacent to the polyketone layer.
8 . The bladder of claim 7 , wherein the reinforcing layer comprises a woven or non-woven material comprises fiber glass, nylon, cotton, cellulosic fiber, wool, rubber, or a mixture thereof.
9 . The bladder of any one of claims 1 , further comprising a polyolefin layer adjacent to the polyketone layer.
10 . The bladder of any one of claims 1 , wherein the fitting has substantially the same composition as of the polyketone layer.
11 . The bladder of any one of claims 1 , wherein the bladder is substantially free of ethylene vinyl alcohol copolymer.
12 . A bladder tank assembly comprising:
the bladder of any one of claims 1 ; and
a container, wherein the bladder is disposed within the container.
13 . The bladder tank assembly of claim 12 , wherein the container is a metal container, a plastic container, or a combination thereof.
14 . A method for making the bladder tank of any one of claims 1 , the method comprising:
extruding the polyketone layer; and
connecting the fitting into the polyketone layer.
15 . The method of claim 14 , wherein the polyketone layer is a multi-layer structure.