Abstract: A die for melt-blowing apparatus, which has a die body, a nozzle piece, and a lip plate. The nozzle piece is divided into plural temperature-controlling regions in a direction crosswise to a spinning direction. A temperature sensor is used to measure the temperature at a portion surrounding a nozzle orifice in the nozzle piece in each of the divided temperature-controlling regions. A heated gas is applied directly to the nozzle piece for controlling the temperature of the portion surrounding the nozzle orifice to a predetermined temperature. Using this die body, a melt-blown non-woven fabric with a uniform distribution of the weight per unit area can be easily obtained.

Abstract: A substrate for a laminate which comprises a nonwoven fabric which is composed mainly of a liquid crystal polyester fiber, and which is subjected to (1) an entangling treatment, (2) a heating treatment to impart adhesivity to a thermosetting resin, and (3) a surface-modifying treatment, and a laminate containing at least one prepreg prepared by impregnating the substrate with a thermosetting resin and drying are disclosed. The substrate of the present invention has low dielectric constant, is light, exhibits low hygroscopicity, and has good properties to be impregnated with the thermosetting resin and good adhesiveness to the thermosetting resin.

Abstract: A cleaning sheet for a fuser roll, wherein an average diameter of fibers constituting said cleaning sheet is not more than 14 .mu.m; a layer containing not less than 30% by weight of softening fibers which soften at a temperature higher than an ambient temperature of the fuser roll, but lower than a temperature which is 100.degree. C. higher than a surface temperature of the fuser roll is contained; and the cleaning sheet is bonded with adhesive fibers having a fiber diameter of not more than 20 .mu.m; a cleaning member for a fuser roll, having the above cleaning sheet; a supply shaft around which the cleaning sheet is wound; and a take-up shaft to which one end of the cleaning sheet is fixed; and a cleaning apparatus for a fuser roll, having the above cleaning member; and a pinch member for pressing the cleaning sheet wound off from the supply shaft to a fuser roll and conveying the cleaning sheet to the take-up shaft.

Abstract: A three-dimensional non-woven fabric having at least one junction portion in the internal portion thereof may be obtained by forming, and maintaining a distance between, linear junction portions in a piece of starting non-woven fabric or in a laminate of a plurality of layers of starting non-woven fabric, followed by cutting the formed non-woven fabric at a position or along a line between one linear junction portion and another linear junction portion; or by forming dot-like junction portions in a piece of a starting non-woven fabric or in a laminate of a plurality of layers of a starting non-woven fabric, followed by cutting the formed non-woven fabric into a desired shape so as to include the dot-like junction portion. The three-dimensional non-woven fabric has a large strength, excellent shape stability, large surface area, thereby being advantageously utilizable as a carrier for fixing or immobilizing microorganisms or in various other applications.

Abstract: An apparatus and a method for producing a floor mat carrying a group of projections with a predetermined shape on a reverse surface to be contacted with a floor, by passing a molding resin material through a nip between a press roll and a mold roll are disclosed.

Abstract: A feeder 1 for supplying a fiber material, a plurality of fiber opening cylinders 2.sub.1, 2.sub.2, 2.sub.3, . . . 2n (n is a natural number) mounted adjacent to one another for transferring and opening the fiber material fed from the feeder 1 and having metallic wires 2a mounted to the surface thereof, a conveyor 7 arranged for receiving the opened fiber unloaded from the fiber opening cylinder 2n mounted at the outlet end, and a suction box 8 arranged beneath the conveyor 7 for drawing the opened fiber towards the conveyor 7 by a sucking action. The fiber opening cylinders 2.sub.1, 2.sub.2, 2.sub.3, . . . 2n being enclosed in a housing 3 which has fiber transfer openings 4 between any two adjacent fiber opening cylinders and a fiber releasing opening 5 for unloading the opened fiber from the last fiber opening cylinder 2n. At least one of the fiber opening cylinders 2.sub.1, 2.sub.2, 2.sub.3, . . . 2n is driven to produce a centrifugal acceleration of more than 3.4.times.10.sup.5 cm/sec.sup.

Abstract: The present invention relates to an apparatus for producing a fiber web comprising a feeder 1 for supplying a fiber material, a plurality of fiber opening cylinders 2.sub.1, 2.sub.2, 2.sub.3, . . . 2n (n is a natural number) mounted adjacent to one another for transferring and opening the fiber material fed from the feeder 1 and having metallic wires 2a mounted to the surface thereof, a conveyor 7 arranged for receiving the opened fiber unloaded from the fiber opening cylinder 2n mounted at the outlet end, and a suction box 8 arranged beneath the conveyor 7 for drawing the opened fiber towards the conveyor 7 by a sucking action, said fiber opening cylinders 2.sub.1, 2.sub.2, 2.sub.3, . . . 2n being enclosed in a housing 3 which has fiber transfer openings 4 between any two adjacent fiber opening cylinders and a fiber releasing opening 5 for unloading the opened fiber from the last fiber opening cylinder 2n, and also arranged so that any two adjacent cylinders can rotate in opposite directions.

Abstract: A bulk-recoverable nonwoven fabric comprising a nonwoven fabric of which constituting fiber is bonded to each other by an adhesive agent to bond fibers and which is fixed in a compressed state by a temporary adhesive agent having a melting temperature lower than the melting temperatures of the constituting fiber and the adhesive agent to bond fibers, a process for producing the bulk-recoverable nonwoven fabric and a method for recovering the bulk of the nonwoven fabric.

Abstract: A method for packaging meat in a gas impermeable film which comprises providing a liquid absorbing insert formed by a water absorbing material between a sheet of a liquid impermeable material and a layer of liquid permeable material, placing the meat so as to face the liquid impermeable sheet, wrapping a gas impermeable sheet about the meat and liquid absorbing insert, and then providing a vacuum so as to form a capillary action at spaces between the meat and the liquid permeable sheet.

Abstract: An interior material for cars comprising a needle punched felt of which both side surfaces are impregnated with synthetic resin emulsions, wherein the minimum film forming temperature of a synthetic resin emulsion (a) impregnated into one side surface of the needle punched felt is lower than that of a synthetic resin emulsion (b) impregnated into the other side surface of the needle punched felt. The interior material for cars of the present invention is cheap and has excellent rigidity.

Abstract: A method for producing a tubular needle punched felt, comprising the steps of: (a) overlapping not less than two long sheets comprising a web to form thin layer portions at both side edges of the overlapped sheets and a thick layer portion at the central portion of the overlapped sheets by dislocating the sheets in width direction; (b) needle punching one part or whole of the above central thick layer portion of the overlapped sheets to form a lapped sheet; (c) rolling the lapped sheet and transforming the lapped sheet into a tubular one and overlapping the above thin layer portions with each other; and (d) needle punching the above overlapped thin layer portions to make the thin layer portions one body. The tubular needle punched felt obtained in this invention can be suitably used as a tubular felt used in the INS method and the like.

Abstract: An interior material for cars comprising a web in which at least 3% by weight of a rayon fiber is contained, of which one side surface is impregnated with a binder and which has a 20% modulus of 1 to 15 kg/5 cm. width in both longitudinal direction and transverse direction, a base material laminated on the binder-impregnated surface of the web and a resin print laminated on the other side surface of the web. The interior material can be easily subjected to molding such as deep drawing since no space is generated between a base sheet and a non-woven fabric. Further, since the interior material has an excellent flame resistance, it can be suitably used as an interior material such as a ceiling material, a door trim board or a pillar garnish material.

Abstract: A conjugate polycarbonate fiber comprising 95% to 50% by weight of a polycarbonate component and 5 to 50% by weight of a polypropylene component wherein ultrafine fibers composed of the polypropylene component are dispersed and arranged in a bundle-like form in the polycarbonate component as the fiber matrix, whereby the crazing resistance and oil resistance are improved. The conjugate polycarbonate fiber can be made into fibrous sheets and non-woven fabrics. The non-woven fabrics are adapted to be used as insulating layers in electric power cables.

Abstract: A flexible elongated member is embedded in a coarse non-woven fabric layer. The flexible elongated member has partially opened circumferential portions through which water enters into the flexible member, the circumferential portions and inside thereof forming a continuous drain passage not blocked by deformation of the flexible member.