FLEXIBLE BLADDER TANKS INCLUDING POLYKETONE
The present disclosure provides a plastic bladder for containing a liquid. The bladder includes a barrier layer and a recycled plastic layer adjacent to the barrier layer. The bladder further includes a fitting in contact with the layer.
1 . A plastic bladder for containing a liquid, the bladder comprising:
a barrier layer;
a recycled plastic layer adjacent to the barrier layer
a fitting attached to the layer.
2 . The bladder of claim 1 , wherein barrier layer comprises a polyketone in a range of from about 2.5 wt % to about 100 wt % of the barrier 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 claim 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 claim 1 , wherein the barrier layer comprises a plastic in a range of from about 2.5 wt % to about 100 wt % of the barrier layer.
6 . The bladder of any one of claim 1 , wherein the barrier layer comprises ethylene vinyl alcohol in a range of from about 2.5 wt % to about 100 wt % of the barrier layer.
7 . The bladder of any one of claim 1 , wherein the recycled plastic layer comprises a recycled polyolefin.
8 . The bladder of claim 7 , wherein the polyolefin layer comprises from about 50 wt % to 100 wt % recycled polyolefin.
9 . The bladder of any one of claim 1 , further comprising a reinforcing layer adjacent to the recycled plastic layer.
10 . The bladder of claim 9 , wherein the reinforcing layer comprises a woven or non-woven material comprises fiber glass, nylon, cotton, cellulosic fiber, wool, rubber, or a mixture thereof.
11 . The bladder of any one of claim 1 , wherein the recycled polyolefin layer comprises a recycled polyethylene, a recycled polypropylene, copolymers thereof, or mixtures thereof.
12 . The bladder of any one of claim 1 , wherein the fitting has substantially the same composition as of the barrier layer.
13 . The bladder of any one of claim 1 , wherein the barrier layer defines an interior surface of the bladder and the recycled plastic layer is external to the barrier layer.
14 . A bladder tank assembly comprising:
the bladder of any one of claim 1 ; and
a container, wherein the bladder is disposed within the container.
15 . The bladder tank assembly of claim 14 , wherein the container is a metal container, a plastic container, or a combination thereof.
16 . A method for making the bladder tank of any one of claim 1 , the method comprising:
extruding the barrier layer; and
contacting the barrier layer with the recycled plastic layer; and
contacting the fitting with the barrier layer.
17 . The method of claim 16 , wherein the barrier layer is a multi-layer layer.