Patent ID: 9266749
Filing Date: 2016-02-23
CPC Classification: B01D,C02F

Claim Text:
1. A shape-retaining package comprising: a stack of layers formed by accordion folding a continuous strip of a batting, wherein each said layer is generally flat and includes major opposed surfaces that define a rectangular perimeter, the stack being in the shape of a parallelepiped with an upper major surface of an uppermost layer defining a top of the stack and a lower major surface of a lowermost layer forming a bottom of the stack, wherein said batting is formed of randomly laid continuous polyester fibers, wherein the fibers are joined at contact sites by a bonding agent to form interstitial spaces, and wherein the batting has a compressive modulus of 0.5 to 0.9 grams per square centimeter, whereby the stack is capable of being compressed to produce a reduction in height as measured from the bottom of the stack to the top of the stack of between 10% to 50%; a plurality of irregularly shaped granules of a polymer, wherein the polymer is adapted to selectively absorb heavy metal ions dissolved in water, and wherein the polymer granules are trapped within the interstitial spaces of said batting; and a porous fabric pouch, wherein the stack is located within and snugly enveloped by the fabric pouch to permit the stack to be compressed to permit said reduction in height when positioned in a cage.