Abstract:
Disclosed is an improvement to twin wire forming wherein an open support structure in the form of an opened or grilled breast roll or a slotted forming shoe supports at least a portion of the outer wire in the forming throat. In such manner, the gap between the open support structure and the forming cylinder can be narrowed such that the gap is less than or equal to the thickness of the jet of stock injected between the wire to form the web. The jet of stock so injected impinges on both the forming cylinder and the open support structure and immediate drainage is provided through the outer wire without substantially varying the tension or radius of the outer wire thereby generally improving uniformity and, in particular, improving basis weight uniformity of the web produced.
Abstract:
A multi-layered wiper and method of making it, the wiper having at least one strong surface region of fibers having a predominate length of less than one-fourth inch and having bonding material disposed therein in a fine spaced apart pattern, the areas in the strong surface region where the bonding material is disposed being finely creped and at least one inner core region of fibers having a predominate length of less than one-fourth inch and generally having less fiber concentration than the surface region, and at least one interior strong region of fibers having a predominate length of less than one-fourth inch and having a greater fiber concentration than in the inner core region and having bonding material disposed therein in a fine spaced apart pattern to bond the fibers in the interior strong region together into a strong network, the bonding material in the interior strong region being substantially unconnected to the bonding material in the strong surface region and a strengthening layer comprising a web of fibrous material having a minimum wet tensile strength of about 16 ounces per inch measured in any direction, and being substantially free of apertures larger than 0.02 square inches, said strengthening layer being bonded to the exterior surface of one of the interior strong regions.
Abstract:
Una cabina de distribución de papel enrollado, especialmente papel de tipo sanitario, que comprende: (a) medios para sostener giratoriamente un rollo de. papel en la cabina; (b) dos rodillos realzadores o estampadores giratorios que proporcionan un estrechamiento, a través del cual se dirige el papel antes de salir de la cabina; teniendo al menos uno de los rodillos realzadores una pluralidad de salientes en nudillo, cooperando los rodillos realzadores para tensar mecánicamente el papel más allá de su limite elástico en zonas espaciadas entre sí sustancialmente sobre toda la superficie de dicho papel, para reducir la resistencia a la tensión del papel en la dirección transversal de la máquina en más del 25%, y aumentar el volumen del papel en más del 809, proporcionando así una banda distribuida que tiene una blandura, flexibilidad y absorbencia mejoradas; y (c) medios para hacer girar los rodillos realzadores y hacer avanzar así el papel a través del estrechamiento de dichos rodillos realzadores.
Abstract:
A rolled paper towel dispenser having a spring (178) loaded cutting blade geared to rotate in conjunction with a slotted drive drum (54). The blade is shielded by a fixed cowl (34). Guide rollers (68, 70) and the drive drum include threading clips. A brake mechanism ensures that the rolled towel cannot be free spooled. Supports (25, 26, 86) are provided for both a primary roll and a stub roll. Geared sensor arms sense the diameter of the stub roll and when the diameter decreases to a point near the end of the roll, the tail from the primary roll is automatically delivered to the surface of the drive drum and automatically threaded therethrough. To dispense a towel from the dispenser, the user grasps the tail of the towel extending from the dispenser and pulls downward. This drives the drive drum which in turn rotates the cutting blade into position severing the sheet at the proper location.
Abstract:
A roll paper dispensing cabinet having means for rotatably supporting a roll of paper and a pair of rotatable embossing rolls providing a nip through which the paper is directed prior to exiting the cabinet. The embossing rolls, at least one of which includes a plurality of knuckles, cooperate to mechanically stress the paper beyond its elastic limit in spaced-apart regions over substantially the entire surface of the paper to reduce the cross-machine direction wet tensile strength of the paper by 25% and to increase the bulk of the paper more than 60% to thereby provide a dispensed sheet having enhanced softnesss, flexibility and absorbency.
Abstract:
A method of producing a nonwoven fibrous web (20), such as paper, from a dispersion (15), preferably acqueous, of fibers wherein the fiber consistency is greater than 6 % of the dispersion weight and/or the dispersion is permanently stable until subjected to a destabilizing step, such as application of vacuum (13, 14). The dispersion (15) is deposited against a foraminous support (11, 12) and the fibers are separated from the dispersing medium to form a web (20) on the support (11, 12). The dispersing medium is preferably foam formed by intermixing air in water and surfactant. Also disclosed is an apparatus for carrying out the above method and the products made thereby.
Abstract:
A system and method of installing a coreless roll (12) of an absorbent consumer paper product in a dispenser (10) performs or includes steps of orienting the coreless roll (12) to a desired position of alignment within the dispenser, and securing the coreless roll (12) to the dispenser (10) by penetrating the coreless roll with at least one projection (30) that penetrates between adjacent layers of paper product in the coreless roll (12) so that the coreless roll is secured against radial displacement with respect to the dispenser during operation. A temporary holding mechanism (38) may be provided to hold the coreless roll in an intended position of alignment while the coreless roll (12) is being secured to the dispenser (10).
Abstract:
The problem with single cartridge dispensers is that when a maintenance person looks at the liquid level of the cartridge, the fluid may be only slightly above the level indicator window with the result that the cartridge would be completely used up before the maintenance person returns to service the dispenser. Thus, it would be desirable to have two cartridges so that the user can completely exhaust one cartridge and then begin dispensing from the second cartridge. The device (10) employs two cartridges (11a,11b) each having a compressable dispensing pump (25a, 25b). A movable compression member (52) is slidable to a first position adjacent the pump (25b) of a first cartridge (11b) or to a second position adjacent the pump (25a) of the second cartridge (11a) so that fluid from only one cartridge may be dispensed at a time.
Abstract:
Disclosed is a continuous process for replicating interference patterns in radiation curable coating compositions or materials. A radiation curable composition is brought into contact with interference patterns borne on the surface of a revolving drum (22). The curable composition which may be supported and coated onto a film (8) by coating roll (10) or insupported and coated directly into revolving drum (22) by a coating roll (13) is irradiated via irradiation means (20) to cure it at least sufficiently so that it can be stripped from the replicating surface of the revolving drum.