Abstract:
A papermaker's fabric, usable in the forming section of a paper machine, has three layers of cross-machine-direction (CD) wefts. The forming layer wefts are grouped into pairs. This twinning of the top-layer wefts results in non-equal spacing in the forming (top) layer. This spacing imparts a desired non-uniformity in the web-supporting surface, thereby reducing diagonal fabric pattern. The forming layer wefts are vertically offset from the middle and wear side layer wefts, which are vertically stacked. This unstacked alignment reduces the caliper of the fabric and lowers the void wefts provide extra stability in the CD.
Abstract:
A forming fabric having a paper side layer and a machine side layer comprises a first set of paper side layer wefts, a second set of machine side layer wefts and a single set of warp yarn triplets. In the fabric weave pattern, each member of each triplet set of warp yarns interweaves with the paper side weft yarns to occupy in sequence segments of an unbroken warp path in the paper side surface, and each triplet in each set of warp yarns interlaces alone with at least one single machine side layer weft yarn. Each segment in the unbroken warp path is separated by at least one paper side layer weft yarn. The machine side layer interlacing points are regularly spaced. After heat setting, the fabrics typically have an air permeability typically from about 7,500 to about 10,500 m³/m²/hr. Paper products made using these fabrics have enhanced printability.
Abstract:
Die Erfindung betrifft eine Gewebeband-Einrichtung, z.B. Endlos-Siebband für Papier- and Zellstoffmaschinen, bei welcher an zumindest einem Ende des Gewebebandes (20′, 21′) eine Anschlussvorrichtung (7a′ ; 7b′) vorgesehen ist, welche über ein lösbares Verbindungsmittel (9) mit einer weiteren Anschlussvorrichtung (7b′; 7a′) desselben oder eines anderen Gewebebandes verbindbar ist, wobei eine Anzahl bestimmter Längsfäden (2′, 2′′) entlang eines dem Ende des Gewebebandes zugeordneten Abschnittes (4′, 4′′) aus dem Gewebe (20′) herausgenommen ist. Die herausgenommenen Abschnitte (4′, 4′′) der Längsfäden (2′, 2′′) sind an zumindest einer Seite des Gewebebandes (20′, 21′) in einem Bereich vor der Abschlussvorrichtung (7a′; 7b′) aufliegend angeordnet sind, sodass diese eine Abstützung (10′; 10′′) zum Schutz der Anschlussvorrichtungen (7a′ ; 7b′) bei über eine Arbeitsfläche (AF) laufendem Gewebeband bilden. Erfindungsgemäss sind die herausgenommenen Abschnitte (4′) der Längsfäden (2′) um Querfäden (11′, 12′) herumgewebt und mit diesen rückverwoben.
Abstract:
A press fabric is manufactured by spirally winding a strip (16) in a plurality of non-overlapping abutting turns, and by joining each turn of the strip to that previously wound. The strip (16) is itself a laminated structure having at least two layers (36, 38) attached to one another. The strip (16) is manufactured in considerable lengths for subsequent use in manufacturing press fabrics in any length and width dimension.
Abstract:
Tissue products such as facial tissue, bath tissue, paper towels and the like are wet molded and dried using a through-air-drying fabric (10) which has a three dimensional, sculptured, textured background accentuated with decorative signature patterns. The textured background is woven into the fabric. The decorative patterns (441) are created by using a smooth polymeric substance or by yarn stitches. The decorative patterns on the through air drying fabric provide enhanced aesthetics, while the textured background provides improved properties such as absorbent capacity, absorbent rate, stretch, flexibility, drape, bulk, and hand feel when used in tissue making.
Abstract:
A bi-component link for making a modular papermaking fabric has a link base component capable of interconnecting to at least one other link and a surface plate component attached to the link base forming a paper support surface. Each component is made through molding techniques to have predetermined characteristics such as open area, permeability, surface finish, etc. The surface plate component is attached to the link base component for combined effect on fabric characteristics. A papermaking fabric is constructed from a plurality of interconnected bi-component links and has predetermined permeability established by the combination of a pattern of open and contact areas on each component of each link.
Abstract:
A papermaking belt and paper made thereon. The papermaking belt comprises a patterned framework (12) and a reinforcing element (14). The papermaking belt may be used as a through air drying belt, a forming wire, a backing wire, a conventional press felt, etc. The papermaking belt has a reinforcing element and a framework extending from the reinforcing element. Intermediate various portions of the framework are deflection conduits (16). The framework is interrupted and subdivided by synclines (18). The framework, synclines and deflection conduits respectively impart first, second and third values of intensive properties to regions of the paper made on these portions of the belt. The value of the intensive property of the regions of the paper corresponding to the synclines is intermediate the value of the regions of the paper corresponding to the framework and deflection conduits. For example, if the papermaking belt according to the present invention is used as a through air drying belt, the density of the regions of the paper corresponding to the synclines will be less than the density of the regions of the paper corresponding to the framework but greater than the density of the regions corresponding to the deflection conduits. Conversely, if the papermaking belt according to the present invention is used as a forming wire, the basis weight of the regions of the paper corresponding to the synclines will be greater than the basis weight of the regions corresponding to the framework but less than the basis weight of the regions corresponding to the deflection conduits.
Abstract:
An apparatus for making paper. The apparatus comprises a felt and a pattern layer joined to the felt. The felt has a relatively high UV absorbance. Such a high UV absorbance prevents the actinic radiation applied to cure the pattern layer from scattering when the radiation penetrates the surface of the pattern layer. By limiting the scattering of radiation beneath the surface of the pattern layer, extraneous cured pattern layer material is minimized in the regions of the felt where it is desired not to have pattern layer material.
Abstract:
A belt (30) for a press section, which includes a body portion (42) which is permeable to pressurized air provided in a press nip (6) and which is substantially impermeable to liquid during passage through the press nip. A press section and method which includes such belt are also provided.
Abstract:
A base fabric for press felts and a press felt incorporating that base fabric which includes an assembly of three or more separately woven fabric layers (10, 20, 30). Each of the woven fabric layers making up the base fabric assembly is a single or multilayer fabric, and they may be of the same or different weave patterns. The three or more fabric layers (10, 20, 30) are assembled, one above the other and needled together with at least one batt layer on the papermaking surface of the felt. Preferably, the yarns on the top surface of the top fabric (10) will, by virtue of the weave of the fabric, have long floats in the machine and/or cross machine direction to provide good paper web support. The bottom (30) and intermediate fabric (20) layers may also have long cross machine direction floats on their top surfaces to support the fabric or fabrics above. In a preferred embodiment, the yarns (11, 12) making up the top fabric layer (10) will be relatively finer than those making up the intermediate layer (21, 22) and similarly, the yarns making up the intermediate layer will be relatively finer than those making up the bottom fabric layer (31, 32).