Flexible bladder tanks including polyketone

Patent metadata

Field	Value
Publication number	US-2022073271-A1
Application number	US-201917420610-A
Country	US
Kind code	A1
Filing date	Jan 11, 2019
Priority date	Jan 11, 2019
Publication date	Mar 10, 2022
Grant date	—

Abstract

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.

First claim

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.

Assignees

• Raven Ind Inc

Inventors

• Redford Steven G

Classifications

• B32B27/12

  next to a fibrous or filamentary layer · CPC title

• B32B2250/02

  2 layers · CPC title

• B32B2262/12

  Conjugate fibres, e.g. core/sheath or side-by-side · CPC title

• B32B27/308

  comprising acrylic (co)polymers · CPC title

• B32B27/322

  comprising halogenated polyolefins, e.g. PTFE · CPC title