| ICHIKAWA CO., LTD. Patent applications |
| Patent application number | Title | Published |
|---|
| 20120012270 | SHOE PRESS BELT - A belt (shoe press belt) for papermaking machines having good wet paper web water squeezing capability, and wherein damage, cracks, and abrasion of the outer circumferential belt surface during use is small, and due to the reduced abrasion between the cutting chips, the cutter and the groove walls, the cutter life is long and the surface roughness is small. The cross-section in the cross-machine direction of the water draining grooves is provided in the machine direction in the felt-side surface of the shoe press belt and the groove corner parts formed by the groove sidewalls and the groove bottom part of the water draining grooves are chamfered in the shape of a trapezoid or a rectangle. | 01-19-2012 |
| 20110312239 | PAPERMAKING FELT - A papermaking felt which, in a papermaking machine, has good water squeezing capability (water permeability) and durability with regard to flattening and which also has excellent wet paper web smoothing properties and resistance to fiber loss. The papermaking felt is made by stacking and intertwiningly integrating by needling a substrate, a first batt fiber layer disposed on the wet paper web side of the substrate, and a second batt fiber layer disposed on the machine side of the substrate; wherein the substrate is made from a plurality of reinforcing materials, the reinforcing materials include a spunyarn, and due to the intertwining with a batt fiber layer, the spunyarn is integrated to such a degree that the yarn shape disappears. | 12-22-2011 |
| 20110303383 | SHOE PRESS BELT - A shoe press belt includes a substrate, a wet paper web-side layer provided on the outer side of the substrate; and a shoe-side layer on the inner side; the wet paper web-side layer and the shoe-side layer are made from a high-polymer elastic material. The surface layer of the wet paper web-side layer includes concave water catching parts and land parts which are projecting parts occurring due to formation of the water catching parts. The occurrence of cracks in the surface part of the land part and the bottom part and corner parts of the water catching part of the shoe press belt is suppressed by setting the hardness of the surface part of the land part at a relatively higher value than the hardness of the bottom part of the water catching part. Thereby, occurrence of cracks in the surface part of the land parts and the bottom part of the water catching part in a shoe press belt having water catching parts and land parts in the surface layer of the wet paper web-side layer can be suppressed. | 12-15-2011 |
| 20110253328 | PAPERMAKING PRESS FELT AND PAPERMAKING METHOD - The object of the invention is to provide a papermaking felt which can be easily engaged in a papermaking machine, wherein the work time for engaging the felt is short, the initial warming-up period until reaching the highest papermaking speed is short, and the felt life is long. This object is achieved by integrating and attaching by dispersion in the batt layer of the felt a polymeric elastomer having high deformability when pressure is applied and good recoverability after pressure is applied. | 10-20-2011 |
| 20110203758 | PAPERMAKING PROCESS BELT AND METHOD FOR MAKING THE SAME - A process belt for papermaking with a long operational life comprises an integrated structure of a reinforcing fibrous base material | 08-25-2011 |
| 20110127000 | PROCESS BELT FOR PAPERMAKING AND METHOD FOR MAKING THE SAME - A process belt for papermaking with a long operational life comprises an integrated structure of a reinforcing fibrous base material | 06-02-2011 |
| 20110108224 | PAPERMAKING PRESS FELT AND PAPERMAKING METHOD - The object of the invention is to provide a papermaking felt which can be easily engaged in a papermaking machine, wherein the work time for engaging the felt is short, the initial warming-up period until reaching the highest papermaking speed is short, and the felt life is long. | 05-12-2011 |
| 20110100576 | SEAMED PRESS FELT OF MULTILAYERED BASE-FABRIC STRUCTURE FOR PAPERMAKING AND PROCESS FOR PRODUCING THE SAME - A single-seam felt which employs a base fabric of a multilayer structure and which, despite this, is excellent in wet-web surface smoothness and has satisfactory batt adhesion. It is free from wrap protrusion and weft fraying in the seamed part of the layered base fabric. | 05-05-2011 |
| 20110017419 | PAPERMAKING SHOE PRESS BELT - A papermaking shoe press belt is formed of a reinforcing fiber base material and a polyurethane layer integrated with each other. The reinforcing fiber base material is embedded in the polyurethane layer. The papermaking shoe press belt includes, as the polyurethane layer, a polyurethane layer obtainable by curing a composition composed in combination of a urethane prepolymer and one or more curing agent. The urethane prepolymer is obtainable by reacting a p-phenylene diisocyanate compound with a long-chain polyol. The at least one curing agent is selected from 4,4′-methylene bis(2,6-diethyl-3-chloroaniline), 4,4′-methylene bis(2-chloroaniline), methylene bis(2-ethyl-6-methylaniline), 4,4′-methylene bis(2-ethylbenzeneamine), methylene bis(2,3-dichloroaniline), 4,4′-methylenedianiline, 3,5-dimethylthiotoluene-2,4-diamine, 3,5-dimethylthiotoluene-2,6-diamine, 3,5-diethyltoluene-2,4-diamine, 3,5-diethyltoluene-2,6-diamine, polytetramethylene oxide di-p-aminobenzoate, poly(tetramethylene/3-methyl tetramethylene ether)glycol bis(4-aminobenzoate), trimethylene bis(4-aminobenzoate) and isobutyl 4-chloro-3,5-diaminobenzoate. | 01-27-2011 |
| 20110011551 | PAPERMAKING FELT - Papermaking felts include a base material and a batt layer provided on one or both sides of the base material. The batt layer includes a water-absorbing resin, and the water-absorbing resin has a coefficient of water absorption of from 1.05 and 10. | 01-20-2011 |
| 20100319869 | CARRIER BELT FOR WET PAPER WEB - A wet paper web transfer belt | 12-23-2010 |
| 20100314067 | SHOE PRESS BELT FOR PAPERMAKING - A belt for papermaking shoe press is provided which comprises a reinforcing fibrous base ( | 12-16-2010 |
| 20100314065 | PAPER MAKING SHOE PRESS BELT - This aims to provide a paper making machine belt (a shoe press belt) having excellent wet squeezability but less damages (such as cracks or wear) of the outer periphery of a belt being used. The paper making shoe press belt includes drainage conduits extended in the felt-side surface thereof. The drainage conduits are discontinuous grooves, and are made semi-arcuate on at least one of the belt ends in a belt running direction (an MD direction). | 12-16-2010 |
| 20100282426 | BELT FOR CONVEYING WET WEB - A belt for wet-web conveyance which includes a hydrophilic fibrous structure formed by needle punching in a wet-web-side layer thereof and which can be inhibited from increasing in belt width dimension with water absorption of the hydrophilic fibrous structure and from forming base fabric marks. The belt for wet-web conveyance includes a wet-web-side layer including a hydrophilic fibrous structure and a machine-side layer. A base fabric disposed in the belt is constituted of a first woven fabric disposed on the wet-web side and, laminated therewith, a second woven fabric disposed on the press roll side. The first woven fabric is woven from a machine-direction yarn material and a cross-direction yarn material, the machine-direction yarn material being a spun yarn and the cross-direction yarn material being a yarn having a low water absorption. | 11-11-2010 |
| 20100252218 | FELT FOR PAPERMAKING - The papermaking felt | 10-07-2010 |
| 20100200188 | FELT FOR PAPERMAKING - The present invention provides a papermaking felt which exhibits a good dewatering capability (water permeability) and resistance to flattening in a papermaking machine, and which is capable of improving surface smoothness of a wet paper web and has improved anti-dehairing property. | 08-12-2010 |
| 20100186920 | SHOE PRESS BELT FOR PAPER MAKING - Disclosed is a shoe press belt ( | 07-29-2010 |
| 20100186918 | SHOE PRESS BELT FOR PAPER-MAKING MACHINE AND PROCESS FOR PRODUCING THE SAME - A shoe press belt for paper-making machine that reduces belt damages attributed to the friction between belt and shoe. The shoe press belt for paper-making machine having a wet paper contact surface and a shoe contact surface, is characterized in that the shoe press belt for paper-making machine has a base member and at least a polymer elastic part constituting the shoe contact surface and that the shoe contact surface of the polymer elastic part has a surface roughness (Ra) of 1.0 to 3.5 μm. | 07-29-2010 |
| 20100163202 | Press Felt for Papermaking - A press felt | 07-01-2010 |
| 20100147480 | SHOE PRESS BELT - Disclosed is a shoe press belt ( | 06-17-2010 |
| 20100101745 | SHOE PRESS BELT FOR MAKING PAPER - A belt (shoe press belt) for a paper making machine, which has good ability of squeezing water from moist paper and which, during use, has reduced damage (cracks and wear) on the outer peripheral surface of the belt. The shoe press belt for making paper carries felt for receiving water squeezed from moist paper. A water discharge groove extended on the surface on the felt side is formed as an intermittent groove, and the width and depth of the water discharge groove are continuously varied in the direction of travel (MD direction) of the groove. The shape of the intermittent groove can be asymmetrical or symmetrical at the left and right with respect to the width, or can be formed to have a narrow width at the center of the groove, or can be formed so that the groove is deep at the center. Because the water discharge groove is intermittent, water discharge ability, the quality of paper, and the smoothness of the surface of moist paper are enhanced at the same time. | 04-29-2010 |
| 20100059193 | Belt for Shoe Press | 03-11-2010 |
| 20100059135 | FELT WITH SEAM FOR PAPER MANUFACTURE - In a seam felt for paper manufacture, seam loops formed at opposite ends of a length of ground fabric to which layers of batt fiber are integrated by needle punching, are formed as groups of loops composed of machine direction yarns. When the opposite ends of the ground fabric are brought together, the groups of loops are intermeshed in an alternating arrangement to form a common bore for receiving a seam thread by which the intermeshed groups of loops are secured together. The loops of each group can be held together by adhesive bonding, or by heat adhesion if the machine direction yarns are core-in-sheath composite fibers wherein the sheath has a lower melting point than that of the core. | 03-11-2010 |
| 20100043998 | PRESS FELT FOR PAPERMAKING - A press felt | 02-25-2010 |
| 20100043996 | WET PAPER WEB TRANSFER BELT - A wet paper web transfer belt ( | 02-25-2010 |
| 20090250184 | BELT FOR SHOE PRESS | 10-08-2009 |
| 20090133774 | Seam Felt for Papermaking and Manufacturing Method Thereof - A seam felt | 05-28-2009 |
| 20090123706 | Papermaking Felt - A papermaking felt is provided with a base member, a batt layer formed on the base member, and a protective layer which is formed over a predetermined width in a contacting portion of the papermaking felt where a press roll of a press apparatus comes into contact. | 05-14-2009 |
| 20090120603 | Seamed Felt for Papermaking - A papermaking seamed felt | 05-14-2009 |
| 20090095433 | Wet Paper Web Transfer Belt - A wet paper web transfer belt comprises a base body | 04-16-2009 |
| 20090038770 | BELT FOR PAPERMAKING MACHINE - The present invention provides a belt for a papermaking machine having excellent property such as crack resistance, abrasion resistance and hair crack resistance. | 02-12-2009 |
| 20090020252 | Press Felt for Papermaking - A press felt comprises a base body, a wet paper web side batt layer, and a press side batt layer. The wet paper web side batt layer includes a web contact side batt layer and a base body side batt layer, the latter being composed of core-in-sheath fibers with a core of high molecular weight nylon with an absolute viscosity of 80 mPa·s or more and a sheath of nylon with a lower melting point than the core. The wet paper web contact side batt layer is made of nylon fibers which are not core-in-sheath fibers. | 01-22-2009 |
| 20090014143 | Smoothing Press Apparatus - In order to provide a smoothing press apparatus suitable to be applied to a closed draw type paper machine for allowing the surface of the wet paper to be smoothed and papermaking to be performed in a high speed, | 01-15-2009 |
