Abstract:
A papermaking fabric is treated by applying a nanoparticle coating to improve resistance to contamination in the papermaking system. The coating is applied during fabric manufacture and cured during heat setting. Alternatively, the coating is applied or renewed by utilizing an existing shower or locating a spray boom or other suitable coating application device in the dryer section to apply the coating to the fabric in a controlled, uniform manner. Prior to application of the coating, the fabric is first thoroughly cleaned and then dried. Following controlled application of the coating, excess material is removed, and the remaining coating on the fabric is then cured, either by utilizing the ambient heat of the dryer section or by a portable bank of heaters. In this manner, the fabric does not have to be removed from the machine in order to apply or renew the contaminant resistant coating.
Abstract:
A multi-layer fabric which may be utilized in a papermaking process. Such fabric has a first layer (Ll) of machine direction (MD) yarns (1, 3, 5, ... ) , a second layer (L2) of MD yarns (2, 4, 6, ...) and a first system of cross-direction (CD) yarns having first binder yarns (110) weaving a first contour pattern and second binder yarns (100) weaving a second contour patter different from the first contour pattern. The first binder yarns (110) and th second binder yarns (100) are each intrinsic to the first layer (Ll) and each bind with the second layer (L2) . Moreover, the binder yarns (110, 100) each weave in sequence in the first layer (Ll) more than once in a pattern repeat of the fabric. The binder yarns (110,100) also weave plural contour patterns in the first layer (Ll) in the weave pattern repeat.
Abstract:
A papermaking belt having a reinforcing structure and a pattern layer is disclosed. The reinforcing layer has a first layer of interwoven machine direction yarns and cross-machine direction yarns. The machine direction and cross-machine direction yarns of the first layer are interwoven in a weave. The pattern layer extends outwardly from and into the first layer. The pattern layer provides a web contacting surface facing outwardly from the first layer. The pattern layer further has at least one region having an amorphous pattern of elongate two-dimensional geometrical shapes having a longitudinal axis having an angle relative to either of the machine direction or the cross-machine direction. The amorphous pattern of two-dimensional geometrical shapes has a statistically controlled degree of randomness.
Abstract:
The present invention provides a multilayer multiaxial fabric for a paper machine having a reduced interference pattern and accordingly improved dewatering uniformity. The present invention also provides a method of forming such a multilayer multiaxial fabric.
Abstract:
A fabric and a method of forming a fabric formed by the steps of providing an endless fabric having at least two layers (12, 14) of MD yarns, raveling CD yarns (16) in an area of said endless fabric to be cut, cutting at least one layer of MD yarns (14) at a first predetermined location (26), and cutting at least one layer of MD yarns at a second predetermined location (28). The method also includes steps of folding the endless fabric in half in the MD direction, placing the first and second predetermined locations proximally to one another, forming loops (30) at least one uncut layer of MD yarns when said fabric is folded, and seaming the loops to form an endless fabric.
Abstract:
A papermaker's fabric, usable in a forming section of a paper machine, having a first layer formed of a first system of paired machinedirection (MD) warp yarns interwoven with a first system of cross machine direction (CD) weft yarns and a second layer formed of a second system of MD warp yarns interwoven with a second system of CD weft yarns. The paired MD warp yarns are intrinsic to the first layer and are interwoven with the second system of CD weft yarns to bind the second layer to the first layer. The second system of MD warp yarns forms long floats, or warp runners, on an external surface of the second layer. In this manner, a triple layer forming fabric with paired intrinsic binders and warp-runners may be produced with improved wear side abrasion resistance.
Abstract:
A stratified press fabric (10) for the press section of a paper machine having a passive sensor system for detecting wear in the press fabric (10). The lower (non-surface) layer(s) (40) of the stratified press fabric are produced using colored staple fiber batt material. As the surface of the fabric (50) is worn away through use, the colored batt material is exposed to provide a visual indication of the wear. This visual indication allows the customer to readily determine the appropriate time to replace the press fabric.
Abstract:
A method for forming an industrial textile product by spiral winding an array of machine direction (MD) yarns to form a system having a defined width, and then connecting the MD yarns in the cross machine (CD) direction with resin. This method is a replacement for conventional weaving or knitting of substrates which can be used as forming, press or dryer fabrics in papermaking, and other industrial applications. Devices for forming the product are also described.
Abstract:
The present invention is directed to fabrics for paper making machines that are rendered contamination resistant and maintain good permeability as a result of a durable coating that lasts the entire life of the fabric. A fluoropolymer will render the fabric contamination resistant over the entire fabric lifetime.
Abstract:
A method of manufacturing and a papermaker's or industrial fabric, which includes the application of a polymeric resin material onto preselected discrete locations on a base substrate in a controlled manner in droplets having an average diameter of 10µ (10 microns) to point bond yarns, bond spiral wound strips together or to bond layers of a fabric together.