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AssigneeDer Gruene Punkt-Duales System Deutschland Aktiengesellschaft
InventorsGerhard Fahrbach, Heinz Reiner Schnettler
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The invention relates to a process for separating tenaciously elastic materials such as plastics and rubber from materials tearing and/or defiberizing under high mechanical stress, particularly paper, and to a device for performing said process. The process is characterized in that the mixture of materials to be separated is subjected to high radial, axial and tangential acceleration forces, whereby a mass flow of shredded fibrous material and a mass flow of substantially unshredded plastics is withdrawn separately. The device for performing the process consists of a screen basket which is cylindrical or preferably polygonal in shape and has borings in its jacket to let the defiberized material pass through, a rotatable driving shaft being arranged coaxially inside the screen basket, with blades being attached to said driving shaft, preferably in rigid connection.
A process for the dry separation of viscoplastic materials from materials defiberizing under mechanical stress, wherein the materials to be separated are subjected to high acceleration and impact forces in radial, axial and tangential directions, and a mass flow of fibrous material and a mass flow of viscoplastic materials are withdrawn separately, and wherein said viscoplastic materials and said materials defiberizing under mechanical stress are present essentially as composite materials, and only the fibrous material will be defiberized under the action of said forces and separated from the viscoplastic material, the viscoplastic materials being withdrawn in a separate mass flow in an essentially non-shredded state, wherein said high acceleration and impact forces are imparted with a device consisting of a screen basket having borings or outlets in a jacket, allowing the defiberized material to pass through, a rotatable driving shaft being arranged coaxially in an inner zone of the screen basket, with blades being attached to said driving shaft, so that depending on the number of blades, an inclination of the blades and a length of the screen basket only the fibrous material will be defiberized and separated from the viscoplastic material, wherein the screen basket has a cross section in a plane perpendicular to the rotatable driving shaft that is polygonal, and formed by a plurality of planes.
A device for the dry separation of viscoplastic materials from materials defiberizing under mechanical stress, consisting of a screen basket having borings or outlets in a jacket, allowing the defiberized material to pass through, a rotatable driving shaft being arranged coaxially in an inner zone of the screen basket, with blades being attached in rigid connection and orthogonal to said driving shaft, so that depending on the number of blades, an inclination of the blades and a length of the screen basket only the fibrous material will be defiberized and separated from the viscoplastic material, the viscoplastic materials being withdrawn in an essentially non-shredded state in a separate mass flow, wherein the screen basket has a cross section in a plane perpendicular to the rotatable driving shaft that is polygonal, and formed by a plurality of planes.
A process for the dry separation of viscoplastic materials from materials defiberizing under mechanical stress, wherein the materials to be separated are subjected to high acceleration and impact forces in radial, axial and tangential directions, and a mass flow of fibrous material and a mass flow of viscoplastic materials are withdrawn separately, and wherein said viscoplastic materials and said materials defiberizing under mechanical stress are present essentially as composite materials, and only the fibrous material will be defiberized under the action of said forces and separated from the viscoplastic material, the viscoplastic materials being withdrawn in said mass flow in an essentially non-shredded state, wherein said high acceleration and impact forces are imparted with a device consisting of a screen basket having borings or outlets in a jacket, allowing the defiberized material to pass through, the borings at one interior surface of the screen basket having sharp edges to enhance the defiberizing effect, a rotatable driving shaft being arranged coaxially in an inner zone of the screen basket, with blades being attached to said driving shaft, so that depending on the number of blades, an inclination of the blades and a length of the screen basket only the fibrous material will be defiberized and separated from the viscoplastic material, the viscoplastic materials being withdrawn in an essentially non-shredded state in a separate mass flow, wherein the screen basket has a cross section in a plane perpendicular to the rotatable driving shaft that is polygonal, and formed by a plurality of planes.
A device for the dry separation of viscoplastic materials from materials defiberizing under mechanical stress, consisting of a screen basket having borings or outlets in a jacket, allowing the defiberized material to pass through, the borings at one interior surface of the screen basket having sharp edges to enhance the defiberizing effect, a rotatable driving shaft being arranged coaxially in an inner zone of the screen basket, with blades being attached in rigid connection and orthogonal to said driving shaft, a rotational speed of said blades being adjustable within a range of from 1000 to 2000 rpm, so that depending on the number of blades, an inclination of the blades and a length of the screen basket only the fibrous material will be defiberized and separated from the viscoplastic material, the viscoplastic materials being withdrawn in an essentially non-shredded state in a separate mass flow, wherein the screen basket has a cross section in a plane perpendicular to the rotatable driving shaft that is polygonal, and formed by a plurality of planes.
A process for the dry separation of viscoplastic materials from materials defiberizing under mechanical stress, wherein the materials to be separated are subjected to high acceleration and impact forces in radial, axial and tangential directions, and a mass flow of fibrous material and a mass flow of viscoplastic materials are withdrawn separately, and wherein said viscoplastic materials and said materials defiberizing under mechanical stress are present essentially as composite materials, and only the fibrous material will be defiberized under the action of said forces and separated from the viscoplastic material, the viscoplastic materials being withdrawn in a separate mass flow in an essentially non-shredded state, wherein said high acceleration and impact forces are imparted with a device consisting of a screen basket having borings or outlets in a jacket, allowing the defiberized material to pass through, the borings at one interior surface of the screen basket having sharp edges to enhance the defiberizing effect, a rotatable driving shaft being arranged coaxially in an inner zone of the screen basket, with blades being attached to said driving shaft, a rotational speed of said blades being within a range of from 1000 to 2000 rpm, so that depending on the number of blades, an inclination of the blades and a length of the screen basket only the fibrous material will be defiberized and separated from the viscoplastic material, wherein the screen basket has a cross section in a plane perpendicular to the rotatable driving shaft that is polygonal, and formed by a plurality of planes.
A device for the dry separation of viscoplastic materials from materials defiberizing under mechanical stress, consisting of a screen basket having borings or outlets in a jacket, allowing the defiberized material to pass through, the borings at one interior surface of the screen basket having sharp edges to enhance the defiberizing effect, a rotatable driving shaft being arranged coaxially in an inner zone of the screen basket, with blades being attached in rigid connection and orthogonal to said driving shaft, a rotational speed of said blades being within a range of from 1000 to 2000 rpm, so that depending on the number of blades, an inclination of the blades and a length of the screen basket only the fibrous material will be defiberized and separated from the viscoplastic material, the viscoplastic materials being withdrawn in an essentially non-shredded state in a separate mass flow, wherein the screen basket has a cross section in a plane perpendicular to the rotatable driving shaft that is polygonal, and formed by a plurality of planes.
Dependencies are inferred from the claim text.