Pall Corporation

Pall Filtersystems Gmbh

Martin Zeiler

Wolfgang Diemer

John P Miller

Klaus Feifel

Gerhard Strohm

Georg Schnieder

Thomas M Sorensen

John D Miller

James A Bair

Ralf Ascher

Roland Müller

Harry Frison

Denis Hahn

Dieter Mohn

Support and drainage materials, each comprising an element comprising a section having a first end and a second end, and a first major surface, and a plurality of parallel tapered flow channels extending from the first end to the second end, the tapered flow channels comprising tapered side walls arranged in parallel and projecting upwardly from, and perpendicular to, the first major surface, the tapered flow channels having a deeper end and a shallower end, and being deeper at the first end of the section than at the second end of the section, wherein the tapered flow channels are connected at the first end with a cross member, and connected at the second end with a cross member, filters including the materials, and methods of use are disclosed.

Support and drainage material, filter, and method of use

Support and drainage materials, filter including the materials, and methods of use are disclosed.

Support and drainage elements, filter including the elements, and methods of use are disclosed.

A method for treating a fluid is provided using a particulate material in the form of a deposited layer having an upstream side and a downstream side wherein a flow of the fluid is directed through the deposited layer from the upstream to the downstream side at a first temperature. The method includes reconditioning the deposited layer and then resuming treatment of the fluid, wherein reconditioning comprises heating the deposited layer to a second temperature; and cooling the deposited layer to a third temperature at an average cooling rate in the range of up to about 20&#xb0; C./min.

Method for treating a fluid, in particular a beverage

A filter module is formed of wound filter material having openings wherein the boundary surfaces of the openings constitute flow-through surfaces. The openings of the wound layers of the filter material form channels angled relative to the winding axis, wherein one group thereof opens at the outer peripheral surface of the roll and the other group opens at the inner peripheral surface of the roll and wherein the channels on the other end, respectively, are closed and wherein the channels, angled relative to the winding axis, are separated from one another by filter material, and wherein the inner area of the roll has a central channel arranged around a winding axis.

Filter module and method for its manufacture

The invention relates to a module for processing a fluid having a body of wound layers of a sheet material, the body having inner and outer surfaces, first and second end faces and a passage extending along the winding axis of said body in fluid communication with the inner surface, the sheet material having openings forming at least three types of channels, the channels extending from the inner surface to the outer surface, a first type of channel being open at the outer surface of the body and closed at the other end, a second type of channel being open at the inner surface of the body, in fluid communication with said passage and closed at the other end, a third type of channel being closed at both ends thereof and positioned such as to receive fluid from one or more channels of the first or second type.

Module for processing a fluid and a process for manufacture of same

The present invention relates to a filter module comprising a body of wound layers of sheet material, with an inner and outer peripheral surface, a winding axis and a passage within the body, the sheet material having a plurality of openings forming at least two types of channels within the wound layers, the channels extending in a direction from the inner peripheral surface to the outer peripheral surface, a first type of channels in fluid communication with the outer periphery and closed at the end toward the inner periphery, a second type of channels in fluid communication with the inner periphery and closed at the end toward the outer periphery, the two types of channels separated by portions of sheet material, one of the types of channels being outlet channels and being covered by a filter material.

Filter module

A filter module comprises a body of wound layers of sheet material, said body having inner and outer peripheral surfaces and a winding axis and a passage extending along the winding axis and in fluid communication with the inner peripheral surface, the sheet material having openings forming two channel types extending from the inner to the outer peripheral surfaces, a first channel type open at the outer peripheral surface and closed adjacent to the inner peripheral surface, a second channel type open at the inner peripheral surface, in fluid communication with the passage and closed adjacent to the outer peripheral surface, the two channel types separated from each other by sheet material, one channel type communicating with a module port, the other channel type communicating with another module port, wherein a majority of openings forming the inlet channels incompletely register with corresponding openings of an adjacent layer.

Filter module and process for manufacture of same

A filter module comprises a body of wound layers of a sheet material, said body having inner and outer peripheral surfaces, a winding axis and a passage along the winding axis and in fluid communication with the inner peripheral surface, the sheet material having openings forming two channel types from the inner to the outer peripheral surfaces, a first channel type open at the outer peripheral surface and closed adjacent to the inner peripheral surface, a second channel type open at the inner peripheral surface, in fluid communication with the passage and closed adjacent to the outer peripheral surface, the two channel types separated from each other by sheet material, one channel type being inlet channels communicating with an inlet, the other channel type being outlet channels communicating with an outlet, the edge of the inlet channel openings having a thickness less than the thickness remote from those openings.

The present invention relates to a method for manufacturing a depth filter sheet material, the method comprising preparing a flowable aqueous pulp composition comprising a fibrous material and a binding agent; dispensing the flowable aqueous pulp composition onto a water permeable support in a predetermined amount per unit area; at least partially draining the water content of the aqueous pulp composition through said water permeable support; drying the at least partially drained pulp composition at an elevated temperature to form a depth filter sheet raw material comprising a first and a second surface section forming an upper and a lower surface of the sheet raw material, respectively, and an intermediate section positioned in between and integrally formed with the first and the second surface sections, the intermediate section having a permeability greater than the permeability of the first and second surface sections; and removing or displacing at least portions of one of the first or second surface section of the raw material. Depth filter sheet materials obtained by the method are also disclosed.

Depth filter sheet material and method for manufacturing same

A filter module comprises a non-filtrate draining spacer element, a filter layer, a filtrate draining spacer element, a filter layer, a non-filtrate draining spacer element, a filter layer, and a filtrate draining spacer layer stacked on one another in an axial direction, wherein at least some of the draining spacer elements comprise connecting means around the outer circumference to compress and seal off the filter layers between the draining spacer elements.

A filter module comprises a body of wound layers of sheet material, the body having inner and outer peripheral surfaces, a winding axis and a passage extending along the axis and in fluid communication with the inner peripheral surface, the sheet material having openings forming two channel types extending from the inner to the outer peripheral surfaces, a first channel type open at the outer peripheral surface and closed adjacent to the inner peripheral surface, a second channel type open at the inner peripheral surface, in fluid communication with the passage and closed adjacent to the outer peripheral surface, the two channel types separated from each other by sheet material, one channel types being inlet channels communicating with a fluid inlet, the other channel types being outlet channels communicating with a fluid outlet, wherein the surface of at least one channel type supports a precoat.

Growing community of inventors

Schwaebisch Gmuend, Germany

Martin Zeiler