The present invention is directed to a collapsible filter apparatus. The collapsible filter apparatus includes an expandable top fluid retention portion, a filter portion and a collapsible funnel portion. These elements are joined to one another so as to provide fluid in need of filtering an expanded receptacle that can be collapsed for storage and transport.

A filter candle to separate contaminants from a plastic melt is disclosed. The filter candle has a filter element through which a melt flow is directed to retain contaminants contained in the melt flow, and a supporting body to support the filter element. The supporting body is a hollow body having multiple passages for the melt flow. At least one additional supporting body is on the side of said filter element that faces away from the supporting body. The additional supporting body acts on surface regions of the filter element and/or accommodates them such that the filter element can be backwashable.

An in tank depth media fuel filter assembly includes a closed body having an interior and an exterior. The closed body has a first composite panel of filtration media and a second composite panel of filtration media. Each of the composite panels includes and outer support layer and at least three inner layers of filtration material including at least two spunbonded layers of synthetic filaments and at least one layer of wetlaid synthetic fibers. An opening is provided in the body for providing fluid communication with the interior thereof.

Improved filter vessel assemblies for filtering fluids in fluid systems (e.g., industrial and/or commercial systems) are provided. More particularly, the present disclosure provides for advantageous filter vessel assemblies that include a releasable locking assembly for a removable filter member (e.g., a filter bag). The present disclosure provides for improved systems/designs for easily securing and/or unsecuring removable filter members to or from a locking assembly of a filter vessel assembly. Improved, convenient, low-cost and/or effective systems and methods for easily securing and/or unsecuring removable filter members to or from a filter vessel assembly by utilizing advantageous locking assemblies associated with a supporting assembly or basket assembly of the filter vessel assembly are provided.

A filter cartridge for installation in a housing having a housing seat includes a filtration media compiled in a cylindrical pack having a radially outer face, a radially inner face defining a central cavity, a first axial end face, and a second axial end face. An end cap having an attachment portion is bonded and sealed to an axial end of the filtration media. A hub portion connects the attachment portion to a non-circular locking portion axially spaced from the attachment portion. The locking portion extends radially beyond the width of the hub portion and includes a sealing face having at least one annular sealing element for sealing against the housing seat.

A polymer melt candle filter having a support which comprises a hollow cylindrical body defined by a first end, a second end, and a cylinder wall having a first end portion and a second end portion. The first end portion includes a screw thread on its outside surface and optionally a hex fitting on its inside surface for receiving a hex wrench. The second end portion includes a plurality of holes in the cylinder wall. The area of the openings of the holes on the outside surface of the cylinder wall may be larger than the area of the openings of the corresponding holes on the inside surface of the cylinder wall. The shape of the openings of the holes on the outside surface may be non-circular. A polymer melt filter plate assembly which comprises (a) a support plate comprising a plurality of threaded holes; (b) at least one filter which is screwed into at least one of the threaded holes via the screw thread on the outside surface of the first end portion of the filter support; (c) a tie rod with (i) a first end extending through a hole in a cone insert and a cap located at the second end of the filter support, and (ii) a second end extending through a threaded hole in the support plate; and (d) a cross bar which is attached to the second end of the tie rod for holding the support plate inside a shaft of an apparatus for filtering a polymer melt.

A filter container includes a main part and a filter piece, the main part includes a surrounding portion, an opening, and a coupling portion, the opening and the coupling portion are respectively located at two opposite sides of the surrounding portion, the filter piece is arranged at the coupling portion.