Abstract: A laminate molding method of fabricating a desired shape consisting of laminate layers having a first type layer in a completely solidified state, the method includes a first step of forming a second type layer on the first type layer, the first type layer having a viscosity larger than the second type layer, a second step of forming a slot groove in the second layer, the second type layer having first and second regions, a third step of printing a releaser on a predetermined region of the second type layer, a fourth step of forming a third type layer on the second type layer or on the first type layer, the second type having a viscosity larger than the third type layer, a fifth step of solidifying the third type layer to form the first type layer, and a sixth step of repeating the first, second, third, fourth, and fifth steps as desired.

Abstract: The lubricant of this invention is lecithin. The lubricant is applied to the surface to be lubricated by forming a colloidal solution of water and lecithin. This solution may also include a surfactant, Vitamin E or its derivative. In addition, a solution stabilizer and an antimicrobial agent may be used to clarify the solution and to inhibit microbial growth in the solution.

Abstract: Expanded graphite sealing rings having particles of PTFE captured at least in a surface layer are disclosed. The sealing rings are produced by impregnating porous rings, cut from a sheet of low density expanded graphite, with a PTFE dispersion and then compressing the rings to a desired final density. Impregnation is accomplished in the presence of an electric field.

Abstract: The present invention pertains, in a preferred embodiment, to a method for forming a nonwoven web exhibiting a plurality of surface energy gradients.

Abstract: A composite button of an electrical device has a frame body (1) with a through bore that terminates at openings, and a button portion (2) with a pressing portion (3) extended through the through bore and a flange portion (4) fused to the frame body (1). A silicone resin layer (5, 24) is interposed between the frame body and the flange portion, and surrounds one of the openings. A method of manufacturing a composite button of an electrical device by molding a frame body, forming a silicone resin layer on a surface of the frame body, and simultaneously molding a button portion to a predetermined shape while fusion boding areas of the button portion contacting the frame body.

Abstract: A container is constructed from a synthetic resin. The containers can be efficiently piled or stacked, since ears provided on the container do not prevent piling. The container includes: a bottom part, a drum part provided at the periphery of the bottom part and at least one ear on the drum part and formed by a kerf. The ear is formed unified with the drum part and can stand up from the drum part. A synthetic resin film covers the kerf in a liquid tight manner over at least the ear forming part of the drum part. The container is designed so the ear can stand in use while the container can pile without projection of the ear before using.

Abstract: A urethane-resin based coating for reducing friction includes a urethane paint and a first powder. The coating is to be applied to a shaped article which is to be subjected to a heat treatment at a certain temperature after the application of the coating to the shaped article. The first powder has a melting point lower than the certain temperature and a solubility parameter which is smaller than or larger than that of the urethane paint by at least 0.5. The coating optionally further includes a second powder which has a melting point higher than the certain temperature. The coating provides the shaped article with low friction, irrespective of the coating film's thickness.

Abstract: A release agent composition for tire molding applications that, when applied on the inner liner surface of an unvulcanized green tire, has a white color prior to vulcanization and a black to blackish-gray color after vulcanization. The release agent composition contains a diorganopolysiloxane that has a viscosity at 25.degree. C. of at least 100 centistokes, an emulsifying dispersant, mica powder or talc powder, a powder having a melting point not exceeding 200.degree. C., and water.

Abstract: A process for making composite fibers includes making composite fibers having at least two different polymers, one of which is a water-insoluble polyolefin and the other is a water-soluble polymer, having a plurality of at least 19 segments of the water-insoluble polyolefin, uniformly distributed across the cross-section of the fiber and being surrounded by the water-soluble polymer.

Abstract: Synthetic fiber that are capable of spontaneously transporting water on their surface satisfy the equation(1-X cos .theta..sub.a)<0,wherein.theta..sub.a is the advancing contact angle of water measured on a flat film made from the same material as the fiber and having the same surface treatment, if any,X is a shape factor of the fiber cross-section that satisfies the following equation ##EQU1## wherein P.sub.W is the wetted perimeter of the fiber and r is the radius of the circumscribed circle circumscribing the fiber cross-section and D is the minor axis dimension across the fiber cross-section,and wherein the uphill flux value of said fiber is from 2 to 60 cc/g/hr when measured from a reservoir of synthetic urine test fluid along a 20 cm long ramp to an absorbant on an attached platform at 10 cm height.

Abstract: Individual broken filaments in a running threadline, e.g., freshly-melt-spun filaments, may be detected and recorded by a novel piezoelectric film sensor device.

Abstract: A rotary-type tabletting machine with lubricant spraying means, wherein a turn table has plural penetrated holes comprising dies provided at fixed intervals in a ring-like arrangement, each hole is provided with a pair of punches above and under the hole, each pair of punches is rotated together with the turn table and execute piston operation so that tablets are continuously produced by compressing pharmaceutical material filled in the die. The rotary-type tabletting machine is provided with a spraying chamber with an upper open end for inserting an upper punch and enclosing the die when the turn table moves to a rotation position which is after a rotation position where a molded table is discharged and before a rotation position where pharmaceutical material is filled in the die. A spray connected with the spraying chamber sprays lubricant in the spraying chamber, and pulsating air generating means connected with the spraying chamber diffuses. The lubricant sprayed in the spraying chamber.

Abstract: A method and apparatus for producing highly-oriented polyester sheet comprises a two-stage drawing process. The first drawing stage is performed within a zero-gap milling and stretching roller assembly comprising a pair of opposed rollers defining a nip therebetween and wherein the rollers are rotated in opposite directions at different lineal surface velocities such that a predetermined draw ratio is defined therebetween. Amorphous polyester sheet is conducted through the nip of the opposed rollers, and as a result of the simultaneous milling and stretching of the polyester sheet, the amorphous polyester is transformed into crystalline polyester as a result of orientation-induced crystallization. The crystalline polyester sheet is heated above the glass transition temperature (T.sub.g) immediately downstream of the nip defined between the pair of opposed rollers, and an exit bridle assembly is disposed downstream of the pair of opposed rollers.

Abstract: A process for producing an absorbable biocompatible medical suture yarn includes the step of spin drawing a bioabsorbable polymer to form suture filaments. A spin finish using a non-aqueous based carrier is applied to the filaments during processing, and an air entangling step is used after the filaments are combined to form the suture yarn.

Abstract: A method for treating a tow of melt-spun filaments to produce a tow of uniformly crimped filaments having a high initial modulus by heat-setting and stuffer box crimping includes the steps of heat-setting the tow, spraying the hot-heat-set tow with an aqueous fiber finish to effect shocklike cooling of the tow, passing the sprayed tow to a pair of squeeze rolls in whose nip it is kneaded through using a defined nip pressure and squeezed off to a fiber finish pickup of 0.7 to 7% by weight of the tow weight, heating the squeezed-off moist tow on a heated multiroll arrangement in such a way that it leaves the multiroll arrangement with a moisture content of 0.5 to 5% by weight of the tow weight and a temperature of 40.degree. to 100.degree. C., feeding the tow with this moisture content and this temperature to a crimping machine and crimping it.

Abstract: A method of manufacturing a panel button includes providing a molding die including a transferable molding die defining a cavity, a core molding die having a runner, a sprue and a gate and a stationary molding die having a sprue. A hollow space is provided in a bottom of the cavity wherein a push button is formed. A projecting portion is inserted into the cavity and is formed on the underside of the core molding die. Two hollow coaxial spaces are connected to each other, one to form a boss, the other to form an elastic arm. A plastic sheet is introduced into the cavity and is sandwiched between the transferable molding die and the core molding die. The plastic sheet has an unbonding portion at a position where the push button is to be formed. A molten resin material is injected into the cavity through the runner, sprue and gate. The thus formed panel button includes the push button on the plastic sheet.

Abstract: A generally cylindrical yarn package having multiple yarn ends is formed by converging the multiple yarn ends to form a substantially planar yarn end ribbon having the multiple yarn ends in a side-by-side untwisted contacting relationship with one another. The yarn end ribbon formed of the converged yarn ends is then wound about a continuously rotating yarn package core by reciprocally traversing the yarn end ribbon parallel to the longitudinal axis of the yarn package core while maintaining the side-by-side untwisted contacting relationship between the multiple yarn ends of the yarn end ribbon. In such a manner, a generally cylindrical yarn package is formed having multiple yarn ends which may later be separated into individual yarn ends for downstream processing by tangentially unwinding and separating the individual yarn ends from the yarn package. As a result, the present invention allows an increase in spinning capacity to be achieved (i.e.

Abstract: A method for producing a bladder includes shaping a mass of crude rubber containing an oil component into a specified bladder shape by a mold; vulcanizing the shaped bladder in the mold; removing the vulcanized bladder from the mold; placing the vulcanized bladder in an environment having a high temperature to keep the vulcanized bladder in the high temperature for a specified time to remove the oil component from the vulcanized bladder; and coating an outer surface of the oil component-removed bladder with a separating agent layer.

Abstract: A method of producing a composite film by forming a substrate layer of polymeric material having an at least one surface a heat-sealable layer and applying a particulate additive to the exposed surface of the heat-sealable layer with the particulate additive bonding to and/or penetrating into the heat-sealable layer.The exposed surface of the heat-sealable layer has greater than 100 surface protrusions per mm2 produced by the particulate additive. The surface protrusions have an average peak height in the range from 5 to 400 nm measured from the average level of the surface of the heat-sealable layer.

Abstract: A protective and release coating is applied to the front portion of an artificial eyepiece before it is placed in a mold to form a taxidermy animal head mannikin. The protective and release coating is preferably a latex material that protects the front surface of the glass or plastic artificial eyepiece from scratching or other damage while being placed in a mannikin mold. The mannikin mold defines a cavity surface contoured for correct anatomical features of the animal head mannikin, including the features immediately surrounding the eye. Eye socket recesses in the cavity surface are shaped to snugly receive the front portions of the eyepieces. Indicia ridges or locator sockets may be located around or in the eye socket recesses, to facilitate the proper orientation of artificial eyepieces within the eye sockets.

Abstract: Polyester carpets of poly(trimethylene terephthalate) are disclosed which have excellent stain-resistance, texture retention and resistance to crushing. The bulked continuous filament yarn used to make the carpets and the process for making the yarns are also disclosed.

Abstract: A method and apparatus for producing stretched yarns.

Abstract: A method of manufacturing a rubber article includes the steps of shaping a green article and blowing a solvent-free powdery release agent made of powder particles onto the green article in order to coat the green article with the release agent. The release agent contains at least 10% vulcanized rubber powder and a compound preventing rubber adhesion within the release agent. During blowing an electrostatic potential difference is provided between the green article and the release agent for driving the powder particles of the release onto the green article. The green article coated with the release agent is subsequently placed into a vulcanization mold where the green article is vulcanized.

Abstract: Disclosed are fibers that are capable of spontaneously transporting certain fluids, for example aqueous fluids, such as water, on their surfaces. The fibers, especially in the form of tow, can be incorporated into absorbent articles, such as diapers, in order to transport fluids to more effectively utilize the absorbent portion of the article. The fibers can be synthetically coated with absorbent materials.

Abstract: A high speed process for producing polyester filaments, in which process the formation of fluffs and the occurrence of filament breakage are very slight and a package having a good winding appearance can be stably obtained, by melt spinning polyester filaments at a taking-up speed of 3000 m/minute or more, while applying an aqueous emulsion of an oiling agent to the filaments, the oiling agent includes 50% by weight or more of a monobasic acid ester of a C.sub.10-18 aliphatic monocarboxylic acid with a C.sub.4-18 aliphatic monohydric alcohol and having an average molecular weight of 300 to 500; 1 to 15% by weight of a polyoxyalkylene glycol copolymer having an average molecular weight of 1,000 to 30,000; and 0.1 to 3% by weight of an organic siloxane compound and/or a fluoroalkyl (C.sub.3-18) group-containing compound.

Abstract: A process for producing a label bearing article (10) calls for an adhesive mounting of a label (16) to an exterior surface (14) of a thin thermoplastic substrate (12), and placing the thermoplastic substrate (12) and the affixed label (16) into a mold cavity of an injection molding apparatus with the label bearing exterior surface (14) against a wall of the mold cavity. A molten thermoplastic resin is injected into the mold cavity under pressure so that the resin contacts an interior surface (15) of the thermoplastic substrate (12) to thereby firmly press the exterior surface (14) of the thermoplastic substrate (12) and the affixed label (16) against the wall of the mold cavity, thereby forming the composite article (10). Sufficient heat and pressure are provided within the mold cavity to at least partially recess the label (16) into the exterior surface (14) of the thermoplastic substrate (12) and integrally mold the thermoplastic substrate (12) to the label (16).

Abstract: A method for producing SMC where a multilayered, multistructured, multipolymer release/barrier film is used as a polymeric film. The multilayered, multistructured, multipolymer release/barrier film is preferably produced by multilayered cast extrusion process. The tensile strength of the multilayered, multistructured, multipolymer release/barrier film should not be less than 8000 psi when tested to ASTM D882. Preferably, the film should inhibit styrene transmission at a rate no less than 2.0.times.10.sup.-11 g. cm/cm.sup.2 -hr. as tested per ASTM F739-81 and a surface tension level not to exceed 30 dynes/cm when tested in accordance with ASTM D2578.

Abstract: This invention relates to a process of making a shaped tip on a catheter. In this process, a lubricant solution is placed on a catheter, the catheter is placed on a mandrel, the catheter is heated, and the mandrel is engaged with a die to form a shaped tip on the catheter. The tipping lubricant of this invention comprises water as the solvent. The lubricant is a silicone surfactant, which is non-ionic and which is a good lubricating fluid. The lubricant solution into which the catheter is dipped includes low percentages of a solution stabilizer and an antimicrobial agent to clarify the solution and to inhibit microbial growth in the water solution. Vitamin E or its derivative may also be used in the lubrication solution.

Abstract: An insulation material comprising the double salt of aluminum potassium sulphate and method of producing such. Aluminum sulphate materials and potassium sulphate materials are combined to form aluminum potassium sulphate which is then dehydrated to remove the water of hydration. Porous forms are made by mixing the hydrated aluminum potassium sulphate with a binder before dehydration. The resultant dehydrated sulphate expands greatly to provide an insulative material which is of lightweight and inorganic.

Abstract: Medical device tubing is prepared from a blended polymer which is a blend of polyetheramide having substantially no ester linkages together with either or both of a polyamide and a polyesteretheramide having a hardness of at least about Shore 70D. The resulting tubing has an exceptionally high ratio of burst strength to flexibility, and the blended polymer retards blooming of the tubing that is believed to result from migration of monomers to the surface of the tubing.

Abstract: A process for preparing melt spun polymeric fiber made from polymerized amide monomers includes the steps of pigmenting the polymer, incorporating within the polymer sufficient SO.sub.3 H groups or salts thereof to give the polymer a sulphur content of between about 10 and about 160 equivalents per 10.sup.6 grams polymer and thereafter chemically blocking with a chemical blocking agent a portion of amino end groups present in the sulphonated polymer.

Abstract: This invention relates to a method and apparatus for producing a polyester fiber which cools a plurality of molten polyester fibers from a spinnert 2 to a temperature below a glass transition point, then takes up the fibers by a non-heating first godet roller at a take-up speed less than 4,000 m/min, heat-stretching the fibers between the first godet roller and a non-heating second godet roller 10 inside a normal pressure steam atmosphere (first heat-treating device 8) higher than the glass transition point of the polyester fiber, and heat-treats the fiber by a pressurized steam atmosphere (second heat-treating device 9) higher than 105.degree. C.

Abstract: Apparatus and methods for automatically spraying a mist of mold release into the space between a tire and a bladder in a tire molding machine so that the mold release covers the outer surface of the bladder or the interior surface of the tire and does not get onto the walls of the mold.

Abstract: A method of making a transfer molded chip carrier. A semiconductor device (10) is first electrically and mechanically attached to a substrate (12). The substrate (12) is then treated by sputter etching so that it will provide good adhesion between the substrate and a molding compound (18) that is subsequently molded to the substrate (25). Portions of the treated substrate are then selectively contaminated in order to reduce the adhesion between these selected portions of the substrate and the molding compound. The molding compound is then formed around the semiconductor device so as to encapsulate it and also part of the surface of the substrate. Portions (20) of the transfer molded material that were molded over the selectively contaminated portions of the substrate (12) are then removed by breaking away.

Abstract: In order to manufacture low-weight, large-scale, artificial rocks resistant to weathering and faithfully rendered as in nature, first a malleable plastic reproduction is made of a natural-rock object. If called for, the reproduction is braced in a second method step, preferably by coating its back side with glass-fiber reinforced plastic. The work mold so manufactured receives a parting compound in a third operational step and thereupon preferably fiberglass mats are inserted and a coat of synthetic resin is applied to make a positive in the shape of a hollow artificial-rock blank. This artificial-rock blank is coated in a fourth operational step with a synthetic resin and fine-grain, preferably multicolored natural sand is deposited on or incorporated into the still moist coat of synthetic resin. Once this coat of synthetic resin with its incorporated natural sand has hardened, the artificial rock has been completed.

Abstract: A process for making composite fibers includes making composite fibers having at least two different polymers, one of which is water-insoluble and selected from the group consisting of polyester, polyamide and copolymers therefrom and the other is water-dissipatable, having a plurality of at least 19 segments of the water-insoluble polymer, uniformly distributed across the cross-section of the fiber and being surrounded by the water-dissipatable polymer.

Abstract: The invention relates to a continuous process for the formation of monofilaments having a diameter of from 60 .mu.m to 500 .mu.m from filament-forming polymers by melt-spinning the polymer, optionally quenching the formed polymer filaments below the melt-spinning head with a cooling medium, cooling the filaments in a liquid bath having a temperature of from -10.degree. C. to 150.degree. C., removing the entrained water and post-treating the filaments by spin finishing, drawing and fixing at a filament delivery speed which is greater than 600 to 4000 m/min after the fixing step.

Abstract: A high speed process for producing polyester filaments, in which process the formation of fluffs and the occurrence of filament breakage are very slight and a package having a good winding appearance can be stably obtained, by melt spinning polyester filaments at a taking-up speed of 3000 m/minute or more, while applying an aqueous emulsion of an oiling agent to the filaments, the oiling agent includes 50% by weight or more of a monobasic acid ester of a C.sub.10-18 aliphatic monocarboxylic acid with a C.sub.4-18 aliphatic monohydric alcohol and having an average molecular weight of 300 to 500; 1 to 15% by weight of a polyoxyalkylene glycol copolymer having an average molecular weight of 1,000 to 30,000; and 0.1 to 3% by weight of an organic siloxane compound and/or a fluoroalkyl (C.sub.3-18) group-containing compound.

Abstract: A post-coalescence melt-spinning process for preparing fine undrawn hollow polyester filaments having excellent mechanical quality and uniformity at high speeds (2-5 km/min) involving selection of polymer viscosity and spinning conditions, whereby the void content of the resulting new undrawn filaments is essentially maintained or increased on cold-drawing or hot-drawing with or without post heat treatment, and the new fine hollow polyester filaments obtained thereby.

Abstract: The soil-repellent monofilament for paper machine wire-cloths consists of at least 85% by weight of polyethylene terephthalate having a viscosity index (V.I.) of at least 96 dl/g and an added copolymer prepared from alkenes and perfluoroalkenes having a melting point from 255.degree. to 275.degree. C. To make the soil-repellent monofilament 1.5 to 5% by weight of tetrafluoroethylene is included by addition to the polymer melt of polyethylene terephthalate prior to extrusion. The soil-repellent monofilament produced by this method has a soiling index of <2 after 5 soiling and cleaning cycles.

Abstract: A spin finish is applied to one or more as spun filaments. The spin finish, which can be a solution of glycerin in a solvent, can be easily removed from the filaments if desired by a water wash. Preferably, the spin finish is non-toxic and the filaments treated therewith are useful in forming surgical devices.

Abstract: A method for producing carpet yarn produces yarn having substantial soil hiding, soil repelling and resistance to staining with acid dye characteristics. The yarn is made by forming at least one hollow trilobal fiber from a molten nylon polymer having an amine end group level below about 25 meq/kg, the fiber having a modification ratio of about 2 and a void volume of at least 3%; quenching the formed fiber sufficiently to solidify the molten nylon; immediately after quenching, at a yarn speed of at least 300 mpm, finishing the fiber with spin finish containing fluorochemical; fully drawing the finished fiber; texturing the finished yarn by a hot fluid texturing process; and subsequently, applying to the textured yarn a sulfonated stainblocker, the stainblocker being heated to at least 50.degree. C. and applied while the fiber temperature is at least about 100.degree. C. in the stainblocker application step.

Abstract: An environment-friendly aqueous slip and mold-release agent for the manufacture of tires and other rubber articles and a process for the molding and vulcanization of tires and other rubber articles are described. The aqueous slip and mold-release agent contains 0.5 to 6 wt. % polytetrafluoroethylene, 20 to 40 wt. % mineral fillers and at least 40 wt. % water. It is sprayed onto the inside of the tire blank prior to the molding and vulcanization, so that the water contained therein evaporates, accompanied by development of a slip and release agent film. Apart from the environment-friendliness and good release effect, the new slip and mold-release agent leads, despite the high water content, to a quick evaporation of the water and thus a rapid development, desired in industrial operations, of the slip and release agent film.

Abstract: According to the present invention, the copolymers of ethylene vinyl alcohol are extruded using extrusion equipment coated with a fluoropolymer. This method improves the processability, alleviates/slows down die buildup, improves the extrudate quality by reducing die lines on surfaces of the extruded product.

Abstract: A mould-form shuttering panel against which concrete is intended to be cast. The shuttering panel is wood based, such as plywood, wherein the side of the shuttering panel intended to lie in contact with the concrete includes an elastic layer which will not adhere to the concrete to any significant extent. The elastic layer is 1-5 mm in thickness and is applied to the plywood by a method including spraying the layer onto the plywood and then rolling a roller over the liquid coating.

Abstract: In order to manufacture low-weight, large-scale, artificial rocks resistant to weathering and faithfully rendered as in nature, first a malleable plastic reproduction is made of a natural-rock object. If called for, the reproduction is braced in a second method step, preferably by coating its back side with glass-fiber reinforced plastic. The work mold so manufactured receives a parting compound in a third operational step and thereupon preferably fiberglass mats are inserted and a coat of synthetic resin is applied to make a positive in the shape of a hollow artificial-rock blank. This artificial-rock blank is coated in a fourth operational step with a synthetic resin and fine-grain, preferably multicolored natural sand is deposited on or incorporated into the still moist coat of synthetic resin. Once this coat of synthetic resin with its incorporated natural sand has hardened, the artificial rock has been completed.

Abstract: Apparatus for preparing first and second chemical compounds to be mixed for reaction, the first and second chemical compounds being extruded in respective first and second bands of semi-solid material and wherein one of the bands may be coated with a protective coating to prevent a chemical reaction between the epoxy resin and the curing agent until the epoxy resin and curing agent are kneaded together, the apparatus including a twisting section including a pair of endless belts which have portions overlying one another, the belts being oriented so that their axes extend at complementary angles relative to the direction of travel of an infeed conveyor belt which advances the juxtaposed bands of material through the twisting section which twists together the bands, producing an elongated, generally cylindrical product with first and second bands being wrapped helically upon one another.

Abstract: A process of high-speed spinning of a set of thermoplastic monofilaments having a linear density from 1 to 30 dtex, includes spinning to obtain melt-spun thermoplastic monofilaments and airblast cooling of the melt-spun monofilaments. To produce a particularly fine monofilament at high winding speeds, the process also includes guiding the thermoplastic monofilaments directly over a fork-like friction element having axially parallel, spaced apart upper and lower contacting friction surfaces during the airblast cooling, and then spin finishing and winding up the thermoplastic monofilaments. An apparatus for melt-spinning including the friction element is described. The product monofilament produced by the process can have an elongation of 20 to 45%, a strength of 36 to 60 cN/tex; a boil shrinkage of 2 to 15%; an Uster % less than 1 and a uniformly round cross section.

Abstract: A method for manufacturing a curved rubber pipe is provided with a guide member (3) arranged concentrically with a mandrel (2, 402). A straight rubber semi-finished product (4) of an unvulcanized or semi-vulcanized rubber is inserted into the guide member (3). A die lubricant can be applied only to the inside of the rubber semi-finished product (4) over its whole length. The rubber semi-finished product (4) is fitted on the mandrel (2, 402) by pushing the product by a head (7) mounted on a leading end of an arm (6). One end of the curved rubber pipe (1) is gripped after vulcanizing by a gripping member (10) and is extracted from the mandrel (2, 402). By this method, it is possible to fit and smoothly extract the rubber semi-finished product (4). The method can also easily be automated.

Abstract: The present invention relates to a composite tubular article for use as the fixing belt in an image-forming device such as a copying machine etc., particularly as a fixing belt suited for thermal fixing, and also relates to a process for producing the same.Conventionally known as an image-fixing belt is a belt consisting of a polyimide resin as the inner layer and a fluoroplastic as the outer layer. However, this fixing belt has problems that clear images cannot be obtained because the thickness of each layer is uneven, and that unglossed, so-called matt images cannot be obtained because the belt surface is smooth.This invention provides a composite tubular article comprising a tubular inner layer made of a polyimide resin and a tubular outer layer made of a fluoroplastic, the outer circumferential surface of the fluoroplastic tubular outer layer having a surface roughness of 1 to 10 .mu.m.