THROUGH-AIR DRYING APPARATUS

The disclosure is directed towards a through-air drying system comprising a hood and a rotatable cylinder with a porous cylindrical deck. The system includes a seal, and more particularly a seal along the lateral edges of the system. The seal generally prevents the exhaust of drying medium from the system through the gap between the hood and the rotatable cylinder and enables the system to be operated at positive air pressure. The seal may be formed by providing the hood with an axial hood flange, which extends at least partially along the bottom edge of the hood and overlaps an axial annular flange disposed on the cylinder when the hood is in a closed and sealed position. 1. A through-air drying apparatus having longitudinal , transverse and axial directions comprising:a rotatable cylinder having a porous cylindrical deck and a pair of spaced apart headers;an annular flange attached to each of the pair of spaced apart headers and extending axially therefrom;a hood having a pair of spaced apart sidewalls terminating at bottom sidewall edges and being operable for passing drying air between an interior of the hood and an interior of the cylinder, the hood movable between an open and closed position for interacting with and covering at least a portion of the cylinder; anda hood flange having a substantially axially extending portion attached to the sidewall and a substantially longitudinally extending portion that extends beyond the sidewall bottom edge;wherein the annular flange and the hood flange cooperate with one another when the hood is in a closed position to form a seal.2. (canceled)3. The apparatus of wherein the annular flange has a bottom edge portion lying in a first transverse plane and the substantially axially extending portion of the hood flange has a bottom edge lying in a second transverse plane when the hood is in a closed position and wherein the first and second transverse planes lie substantially in the same plane.4. The apparatus of wherein the ...

Laminate and Process For Making Same

Laminates are described that contain a frangible layer adhered to at least one extensible layer, such as an elastic layer. In one embodiment, a frangible layer is positioned between two opposing elastic layers. The frangible layer includes lines of separation that generally extend in a first direction. The lines of separation allow the elastic layers to stretch and recover in a direction perpendicular or skew to the lines of separation. In one particular embodiment, the lines of separation comprise lines where the frangible layer has been weakened. The lines of separation can be formed after the laminate is made using groove rolls. 1. An elastic laminate comprising:a first elastic layer and a second extensible layer;a frangible layer positioned in between the first elastic layer and the second extensible layer, the frangible layer comprising a nonwoven material, a film or a foil; andwherein the elastic laminate has a first direction and a second direction and wherein the frangible layer includes lines of separation that extend in the first direction, the lines of separation decoupling the frangible layer from the elastic layer allowing the elastic layer to stretch and recover along the second direction.2. An elastic laminate as defined in claim 1 , wherein the second extensible layer comprises an elastic layer.3. An elastic laminate as defined in claim 1 , wherein the lines of separation define lines where the frangible layer has been at least partially severed.4. An elastic laminate as defined in claim 1 , wherein the frangible layer has an elongation at break that is less than about 75% of the elongation at break of the first elastic layer.5. An elastic laminate as defined in claim 1 , wherein the frangible layer comprises the nonwoven material claim 1 , the nonwoven material comprising a spunbond web claim 1 , a meltblown web claim 1 , a bonded carded web claim 1 , or a coform web.6. An elastic laminate as defined in claim 1 , wherein the frangible layer ...

Soft paper product including beneficial agents

A method is disclosed for topical application of compositions containing a chemical additive onto a paper web. The present invention is also directed t o paper products formed from the method. In general, the method includes the steps of extruding a composition containing a chemical additive through a me lt blown die and then applying the composition to a moving paper web. In particular, the method provides for the application of tacky compositions to a web through a melt blown die while avoiding die tip clogging. In one embodiment, the chemical composition is extruded into fibers and applied to the paper web. The chemical composition may contain, for instance, various additives, such as a polysiloxane softener and one or more beneficial agents .

Process for increasing the softness of base webs and products made therefrom

A process for increasing the tactile properties of a base web without adversely effecting the strength of the web is disclosed. In one embodiment, the process includes the steps of placing a base web between a first moving conveyor (60) and a second moving conveyor (62). The conveyors are then wrapped around a shear-inducing roll (64) which creates shear forces that act upon the base web. The shear forces disrupt the web, increasing the softness and decreasing the stiffness of the web. The shear-inducing roll (64) typically has a relatively small diameter. In some applications, more than one shear-inducing roll may be incorporated into the system. Base webs made according to the present invention have been found to have improved void-volume and fuzz-on-edge properties.

Soft paper product including beneficial agents

A method is disclosed for topical application of compositions containing a chemical additive onto a paper web. The present invention is also directed to paper products formed from the method. In general, the method includes the steps of extruding a composition containing a chemical additive through a melt blown die and then applying the composition to a moving paper web. In particular, the method provides for the application of tacky compositions to a web through a melt blown die while avoiding die tip clogging. In one embodiment, the chemical composition is extruded into fibers and applied to the paper web. The chemical composition may contain, for instance, various additives, such as a polysiloxane softener and one or more beneficial agents.

paper

A process for increasing the tactile properties of a base web without adversely effecting the strength of the web is disclosed. In one embodiment, the process includes the steps of placing a base web between a first moving conveyor and a second moving conveyor. The conveyors are then wrapped around a shear-inducing roll which creates shear forces that act upon the base web. The shear forces disrupt the web, increasing the softness and decreasing the stiffness of the web. The shear-inducing roll typically has a relatively small diameter. In some applications, more than one shear-inducing roll may be incorporated into the system. Base webs made according to the present invention have been found to have improved void-volume and fuzz-on-edge properties.

Single ply tissue products surface treated with a softening agent

Tissue products are described that have been topically treated with a chemical additive, such as a softener. The softener may be, for instance, a polysiloxane. The polysiloxane is topically applied to a tissue sheet, such as a single ply sheet, so as to form a Z-directional gradient in the sheet. Particular, most of the polysiloxane remains on the surface of the tissue product as opposed to migrating to the center of the sheet. In this manner, tissue sheets are formed with improved softness at lower levels of polysiloxane and without the need for applying any surfactants to the sheet. A system for applying chemical additives to tissue sheets is also described. The system includes a chemical additive applicator, such as a meltblown die that emits the chemical additive through a plurality of orifices. In one embodiment, the system includes a device for periodically cleaning the orifices during application of the chemical additive. The cleaning device may be, for instance, a brush that traverses across the die head when desired.

Process for increasing the softness of base webs and products made therefrom

Process for increasing the softness of base webs and products made therefrom

A process for increasing the tactile properties of a base web (38) without adversely effecting the strength of the web (38) is disclosed. In one embodiment, the process includes the steps of placing a base web (38) between a first moving conveyor (60) and a second moving conveyor (62). The conveyors are then wrapped around a shear-inducing roll (64) which creates shear forces that act upon the base web. The shear forces disrupt the web (38), increasing the softness and decreasing the stiffness of the web (38). The shear-inducing roll (64) typically has a relatively small diameter. In some applications, more than one shear-inducing roll (64) may be incorporated into the system. Base webs (38) made according to the present invention have been found to have improved void-volume and fuzz-on-edge properties.

Process for increasing the softness of base webs and products made therefrom

Soft paper product including beneficial agents

A method is disclosed for topical application of compositions containing a chemical additive onto a paper web. The present invention is also directed to paper products formed from the method. In general, the method includes the steps of extruding a composition containing a chemical additive through a melt blown die and then applying the composition to a moving paper web. In particular, the method provides for the application of tacky compositions to a web through a melt blown die while avoiding die tip clogging. In one embodiment, the chemical composition is extruded into fibers and applied to the paper web. The chemical composition may contain, for instance, various additives, such as a polysiloxane softener and one or more beneficial agents.

Method and apparatus for imaging a paper web

A system and process for measuring paper formation characteristics in real time is disclosed. The system comprises apparatus used in a papermaking process, and includes a rotating forming fabric having an upper and lower surface. A paper slurry is deposited upon the upper surface of the moving forming fabric to prepare a wet paper web. The wet paper web typically moves at a high rate of speed as it rides along upon the surface of the forming fabric. Light is transmitted from a light source to the surface of the wet paper web, and then reflected from the surface of the wet paper web to a camera. An image is formed corresponding to the pattern of the reflected light, and in some instances data generated from the reflected light may be compared to other values to provide a feedback loop to adjust the parameters of the papermaking process in real time.

Single ply tissue products surface treated with a softening agent

Tissue products are described that have been topically treated with a chemical additive, such as a softener. The softener may be, for instance, a polysiloxane. The polysiloxane is topically applied to a tissue sheet, such as a single ply sheet, so as to form a Z-directional gradient in the sheet. Particular, most of the polysiloxane remains on the surface of the tissue product as opposed to migrating to the center of the sheet. In this manner, tissue sheets are formed with improved softness at lower levels of polysiloxane and without the need for applying any surfactants to the sheet. A system for applying chemical additives to tissue sheets is also described. The system includes a chemical additive applicator, such as a meltblown die that emits the chemical additive through a plurality of orifices. In one embodiment, the system includes a device for periodically cleaning the orifices during application of the chemical additive. The cleaning device may be, for instance, a brush that traverses across the die head when desired.

Single ply tissue products surface treated with a softening agent

Tissue products are described that have been topically treated with a chemical additive, such as a softener. The softener may be, for instance, a polysiloxane. The polysiloxane is topically applied to a tissue sheet, such as a single ply sheet, so as to form a Z-directional gradient in the sheet. Particular, most of the polysiloxane remains on the surface of the tissue product as opposed to migrating to the center of the sheet. In this manner, tissue sheets are formed with improved softness at lower levels of polysiloxane and without the need for applying any surfactants to the sheet. A system for applying chemical additives to tissue sheets is also described. The system includes a chemical additive applicator, such as a meltblown die that emits the chemical additive through a plurality of orifices. In one embodiment, the system includes a device for periodically cleaning the orifices during application of the chemical additive. The cleaning device may be, for instance, a brush that traverses across the die head when desired.

Through-air drying apparatus

The disclosure is directed towards a through-air drying system comprising a hood and a rotatable cylinder with a porous cylindrical deck. The system includes a seal, and more particularly a seal along the lateral edges of the system. The seal generally prevents the exhaust of drying medium from the system through the gap between the hood and the rotatable cylinder and enables the system to be operated at positive air pressure. The seal may be formed by providing the hood with an axial hood flange, which extends at least partially along the bottom edge of the hood and overlaps an axial annular flange disposed on the cylinder when the hood is in a closed and sealed position.

Aparato de secado por aire pasante.

La descripción está dirigida a un sistema de secado por aire pasante que comprende una campana y un cilindro giratorio con una plataforma cilíndrica porosa. El sistema incluye un sello, y más particularmente un sello a lo largo de los bordes laterales del sistema. El sello generalmente evita el escape del medio de secado del sistema a través del espacio entre la campana y el cilindro giratorio y permite que el sistema funcione con presión de aire positiva. El sello puede formarse proporcionando a la campana una pestaña de campana axial, que se extiende al menos parcialmente a lo largo del borde inferior de la campana y solapa una pestaña anular axial dispuesta en el cilindro cuando la campana está en una posición cerrada y sellada.

Method and apparatus for caliper control of a fibrous web

Fluid bed incineration of wastes containing alkali metal chlorides

Method and apparatus for caliper control of a fibrous web

Fluid bed incineration of wastes containing alkali metal chlorides

Process for increasing the softness of base webs and products made therefrom

A process for increasing the tactile properties of a base web (38) without adversely effecting the strength of the web is disclosed. In one embodiment, the process includes the steps of placing a creped base web between a first moving conveyor (60) and a second moving conveyor. The conveyors (62) are then wrapped around a shear-inducing roll (64) which creates shear forces and compressive forces that act upon the base web. The shear forces disrupt the web, increasing the softness and decreasing the stiffness of the web. The compressive forces are localized at the areas where the fabric knuckles contact the base web, imparting a unique fabric-imprinted pattern to the web with limited caliper reduction. The shear-inducing roll typically has a relatively small diameter. In some applications, more than one shear-inducing roll may be incorporated into the system.

Method and apparatus for caliper control of a fibrous web

Paper webs having a watermark pattern

Programmgesteuerte Datenverarbeitungs anlage

Paper webs having a watermark pattern

A process for producing paper webs having a pattern formed into the web is disclosed. The pattern is formed during formation of the web and is made by varying the basis weight of the web. The paper web is produced by depositing an aqueous suspension of fibers between two forming surfaces. One or both of the forming surfaces include lower permeability areas that create lower basis weight areas in the web. The lower permeability areas are contained in the forming surface according to a particular pattern. For instance, the lower permeability areas can be formed into a drainage roll sleeve contained on a drainage roll which contacts a forming surface. The drainage roll can be a forming roll or a breast roll.