The present invention is directed to films that are deposited with foamable inks or coatings. One purpose is to facilitate their separation for recycling purposes. The films are particularly useful as packaging labels. The inks/coatings are designed so that foaming is activated when the film is in the hot-wash stage of a typical recycle process. This provides added buoyancy to the film allowing it to float to the surface and be removed, thereby significantly improving the efficiency of the recycle process. A feature of the invention is that, prior to this hot wash, the inks/coatings remain substantially unfoamed and thereby do not negatively affect the aesthetics of labeled package. The foamable inks/coatings can be used with any type of film.

Methods and apparatus for separating and removing aflatoxin-contaminated corn from batches of corn by a floating process, thus producing a distinguishable floating mat of contaminated corn and a separate submerged bed of uncontaminated and less contaminated corn. The methods of this disclosure include removing the floating contaminated corn mat by a vacuum mechanism or by liquid flow. The methods reduce the aflatoxin level in the submerged corn bed as much as 80% from the initial aflatoxin level, while removing no more than 15% from the batch of corn.

Methods and apparatus for separating and removing aflatoxin-contaminated corn from batches of corn by a floating process, thus producing a distinguishable floating mat of contaminated corn and a separate submerged bed of uncontaminated and less contaminated corn. The methods of this disclosure include removing the floating contaminated corn mat by a vacuum mechanism or by liquid flow. The methods reduce the aflatoxin level in the submerged corn bed as much as 80% from the initial aflatoxin level, while removing no more than 15% from the batch of corn.

A centrifugal field-flow fractionation device includes: a rotor having a rotation axis, the rotor being provided to be rotatable about the rotation axis; a cover covering the rotor; a protective member arranged inside the cover to over the rotor about the rotation axis; a shock-absorbing member arranged between the protective member and the cover; and a fixing part provided in a breakable manner to fix the protective member to the cover. The rotor is arranged such that the rotation axis orients in a horizontal direction. In a case where a part of the rotor disintegrates and is brought into contact with the protective member during the rotation of the rotor, the fixing part breaks to cause the protective member and the shock-absorbing member to move with the rotor while receiving the impact of the rotor to buffer the kinetic energy of the rotor.

A method and system for separating materials using a combination of screen beds and gravity separators is included. Materials are collected from the waste stream and pass through a screen. The collected larger materials are then directed to a first gravity separator with a specific gravity. Plastics are recovered and residual metals are recovered.