Abstract: An example composite building material includes one or more layers of polymeric fibers, binding agent, and optional fillers, and at least one surface layer of resin-impregnated paper disposed above and/or below the one or more layers. The one or more layers can include a core layer with longer polymeric fibers and top and bottom layers with shorter polymeric fibers. A method of manufacturing the composite building material includes forming the one or more layers, applying the at least one surface layer above and/or below the one or more layers, and heating and pressing the combined layers.

Abstract: A fiber that has a unique surface topography in that it contains a plurality of nanohairs extending outwardly from an external surface of an elongate structure of the fiber is provided. To form the nanohairs, a polymer composition is spun that includes organofunctional nanoparticles (e.g., polyhedral organofunctional silsesquioxanes) embedded within a matrix of a base polymer. Despite being initially embedded within the polymer, the present inventors have discovered that, through selective control over the nature and relative concentration of the components of the composition, as well as the method in which the fiber is formed, a substantial portion of the nanoparticles can migrate to the surface of the fiber as it is formed and thus become arranged in the form of nanohairs.

Abstract: A shoe press belt, and a method for manufacturing and using it. The press belt comprises a base formed of heat-resistant elastomer, inside which base there is a support structure comprising a plurality of support yarns. At least some of the support yarns are heat-resistant polymer yarns, the polymer structure of the material of which comprises a naphthalene group.

Abstract: A multicomponent fiber having an exposed outer surface with the fiber having at least a first component of polyarylene sulfide polymer; and at least a second component of a thermoplastic polymer free of polyarylene sulfide polymer, wherein said thermoplastic polymer forms the entire exposed surface of the multicomponent fiber and is polymethylpentene.

Abstract: Fabrication of ballistic resistant fibrous composites having improved ballistic resistance properties. More particularly, ballistic resistant fibrous composites having enhanced a dynamic storage modulus, which correlates to low composite backface signature.

Abstract: A non-woven mono-component, mono-constituent poly lactic acid (PLA) web is disclosed. The web material is useful for production of tea bags and other infusion beverages. The nonwoven network of PLA fibers in mono-component, mono-constituent configuration provides infusion properties, strength and weight properties that surpass current beverage bags and pouches because of its unique composition and structure.

Abstract: Processes for preparing ultra-high molecular weight polyethylene yarns, and the yarns and articles produced therefrom. The surfaces of partially oriented yarns are subjected to a treatment that enhances the surface energy at the fiber surfaces and are coated with a protective coating immediately after the treatment to increase the shelf life of the treatment. The coated, treated yarns are then post drawn to form highly oriented yarns.

Abstract: A subject of the invention is to provide a fiber and a fibrous formed body, particularly, a nonwoven fabric all having an exceptional color fastness and high liquid absorption properties and high durable hydrophilic properties. This is attained by a fiber essentially based on at least one kind of thermoplastic resin, wherein a fiber treating agent containing component (A) to (D) described below is attached to the fiber, with specific ratio of each of component (A) to (D), wherein (A) is an alkyl phosphate metal salt in which the number of carbons of an alkyl group is less than 10; (B) is a trialkylglycine derivative; (C) is a hydroxycarboxylic acid; and (D) is an alkyl phosphate metal salt in which the number of carbons of alkyl group is in the range of 10 to 14.

Abstract: The invention provides a nonwoven electret web comprising fibers made from a thermoplastic polymer material which comprises a polymer, a first additive (a) and a second additive (b), wherein the first additive (a) comprises a hindered amine and the second additive (b) comprises a metal salt of a carboxylic acid and/or an organic amide derived from a carboxylic acid and an amine. The invention further provides a process for making the nonwoven electret web, a fiber, a process for making the fiber, a mullti-layer sheet, and the use of the nonwoven electret web, the fiber or the multilayered sheet as a filter material or as a dust-removing fabric for cleaning purposes.

Abstract: The invention relates to a thermally bound non-woven material containing a low-shrinkage dual-component core-sheath fiber consisting of a crystalline polyester core and a crystalline polyester sheath which has a melting point at least 10° C. lower than the core, the heat-shrinkage characteristic of said fiber being less than 10% at 170° C.

Abstract: A composite material as a sheet material is described, being relatively cheap, most useful as a raw material of a sanitary product or the like, such as underwear, dust-proof mask or dispensable paper diaper, etc., and good in processability, stretchability, gas-permeability, softness, and touch. The composite material is formed by laminating a stretchable layer and a conjugate spunbonded nonwoven fabric including conjugate fibers including a low-melting-point component and a high-melting-point component. The conjugate fibers are partially bonded to each other by thermocompression, wherein each bonded portion has fine folded structures including alternate hill and valley regions in the CD, and the distance between neighboring hills is 100-400 ?m in average. The conjugate spunbonded nonwoven fabric exhibits stretchability through the spread of the fine folded structures, and has, at 5% elongation, a CD-strength of 0.1 N/5 cm or less and an MD/CD strength ratio of 200 or more.

Abstract: Methods for producing composites useful for the formation of both soft and hard armor. More particularly, methods for the production of ballistic resistant fibrous composites having improved ballistic resistance properties, including low backface signature. The methods employ fiber surface treatments to improve the anchorage of substances applied onto fiber surfaces, achieving a low delamination tendency and corresponding benefits.

Abstract: A material and method for insulating and providing a drainage path for a foundation wall includes a non-woven thermoplastic board being for insulating and providing a drainage path for a foundation wall. The non-woven thermoplastic board has a thermal resistance of an R-value per inch thickness of at least 1. The non-woven thermoplastic board also has a vertical drainage ability per inch thickness of at least 135 Gallons/Hour/Lineal-Foot/inch at a pressure of 500 pounds per square foot (psf).

Abstract: Web material for production of tea bags and the like made of a nonwoven network of PLA fibers in mono-component and/or bi-component forms.

Abstract: The invention relates to a thermally bound non-woven material containing a low-shrinkage dual-component core-sheath fiber consisting of a crystalline polyester core and a crystalline polyester sheath which has a melting point at least 10° C. lower than the core, the heat-shrinkage characteristic of said fiber being less than 10% at 170° C.

Abstract: A fabric for fireproof clothing of the present invention is a fireproof fabric including flame-retardant fibers. The fabric is a woven fabric, a knitted fabric or a nonwoven fabric including 70 to 100 mass % of a polyetherimide fiber and 0 to 30 mass % of another flame-retardant fiber. The flame resistance, the heat resistance, and the wash resistance under ISO 11613-1999 as the international performance standards for fireproof clothing are: (1) flame resistance to be free from hole formation, dripping and melting; and to have afterflame time and afterglow time of not more than 2 seconds; (2) heat resistance to be free from firing, separation, dripping and melting; and to have a shrinkage rate of not more than 5%; and (3) washing resistance to have a shrinkage rate of not more than 3%. The fireproof clothing of the present invention includes the fireproof fabric fabricated as an inner liner.

Abstract: This invention relates to improved plexifilamentary sheet material useful in protective apparel and filtration media, which material is comprised of substantially continuous polyethylene plexifilamentary fiber strands and has a Frazier Permeability, normalized to 1.0 oz/yd2 basis weight, of at least 2 cfm/ft2.

Abstract: A paving mat for use in a paved surface includes a fibrous mat in the form of a paving mat. The fibrous mat includes a fibrous matrix containing a mixture of polymer fibers, first mineral fibers having a first median length, and second mineral fibers having a second median length that is different from the first median length. In another embodiment, the paving mat includes a fibrous mat including a fibrous matrix which is bonded together by a binder. In one embodiment, the binder is a mixture of different binders. The fibrous matrix includes a mixture of mineral fibers in an amount within a range of from 61 wt % to 85 wt % and polymer fibers in an amount within a range of from 15 wt % to 39 wt %. The polymer fibers have a melting point greater than 320° F. (160° C.). The mat has a stiffness in the machine direction within a range of from 65 g-cm to 110 g-cm.

Abstract: To provide a nonwoven fabric containing ultra-fine fibers suitable as a leather-like sheet, and also a leather-like sheet with an excellent compactness. A nonwoven fabric containing ultra-fine fibers, characterized in that it contains staple fibers with a fiber fineness of 0.0001 to 0.5 decitex and a fiber length of 10 cm or less, and has a weight per unit area of 100 to 550 g/m2, an apparent density of 0.280 to 0.700 g/cm3, a tensile strength of 70 N/cm or more, and a tear strength of 3 to 50 N.

Abstract: The invention relates to a process for charging a polymeric product with attribute imparting agent(s) to the polymeric product prepared by the process and to a composition for preparing the polymeric product capable of retaining the acquired attributes for a long period of time.

Abstract: A water-resistant composite paper, suitable for use as a loudspeaker component, is made from a composition including wood pulp, hydrophobic fibers, and stiffening fibers that retain stiffness when wet. In some examples, fibrillated acrylic fibers and glass fibers are used.

Abstract: The present invention is aimed at a method of providing wettability to polyester fibers or filaments, to woven or nonwoven fabrics made therefrom and to resultant articles of manufacture. The method comprises melt extruding a mixture comprising a polyester and one or more alkyl metal sulfonates where the metal is Na, Li or K and the alkyl is straight or branched chain alkyl of 12 to 15 carbon atoms, or is straight or branched chain alkenyl of 12 to 18 carbon atoms. The alkyl metal sulfonates are present from about 2% to about 5% by weight based on the weight of the polyester. A post treatment step such as an alkaline treatment step is not included. The melt extrusion mixtures do not include certain additives such as polyoxyalkylene compounds, alkylmonoethonolamide compounds, alkyldiethanolamine compounds and polyetheramide compounds.

Abstract: The present invention is aimed at a method of providing wettability to polyester fibers or filaments, to woven or nonwoven fabrics made therefrom and to resultant articles of manufacture. The method comprises melt extruding a mixture comprising a polyester and one or more alkyl metal sulfonates where the metal is Na, Li or K and the alkyl is straight or branched chain alkyl of 1 to 24 carbon atoms, or is straight or branched chain alkenyl of 2 to 24 carbon atoms. The alkyl metal sulfonates are present from about 0.1% to about 1.9% by weight based on the weight of the polyester. A post treatment step such as an alkaline treatment step is not included. The melt extrusion mixtures do not include certain additives such as polyoxyalkylene compounds, alkylmonoethonolamide compounds, alkyldiethanolamine compounds and polyetheramide compounds.

Abstract: Rubberized polyolefin fabrics, particularly rubberized polyolefin fiber containing fabrics and a method for vulcanizing rubber without melting or lowering the performance of the fibers. A plurality of fibrous layers are molded and rubberized under high pressures, producing fabrics having customized stiffness properties.

Abstract: A manufacturing method of a clad board includes: sticking a releasing film to a pre-preg sheet; forming a non-through-hole or through-hole in the pre-preg sheet including the releasing film; filling the hole with conductive paste; peeling off the film; and heating and pressing a metal foil onto the pre-preg sheet. The clad board has a smooth face formed on one face or both the faces of the pre-preg sheet, so that the conductive paste is restrained from spreading in an interface between the pre-preg sheet and the releasing film. This structure can avoid short-circuit between circuits and prevent insulating reliability from lowering. As a result, an yield rate is improved, and a reliable circuit board is obtainable.

Abstract: This invention relates to improved plexifilamentary sheet material useful in protective apparel and filtration media, which material is comprised of substantially continuous polyethylene plexifilamentary fiber strands and has a Frazier Permeability, normalized to 1.0 oz/yd2 basis weight, of at least 2 cfm/ft2.

Abstract: A disposable diaper including an ink-printed substrate web exhibiting ink rub-off resistance. The substrate web is printed with an ink composition to form an ink film on the substrate web. The ink film is coated with a coating composition to form a coating film on the ink film. At least one of the ink composition and the coating composition forms a cross-linked structure within the film thereof and forms a cross-linked structure with the other composition between the ink film and the coating film. A method for making the diaper includes the steps of printing and coating the ink film.

Abstract: A fiber for thermal bonding comprising semicrystalline random copolymers of propylene, 1-hexene and optionally another ?-olefin, the amount of 1-hexene being from 0.75 to less 1.52 mol % (i.e. 1.5 to less than 3 wt %) with respect to the total weight of the copolymer. The said copolymers possess a value of melt flow rate (MFR) ranging from 4 to 35 g/10 min and a molecular weight distribution, in terms of the ratio between weight average molecular weight and numeric average molecular weight ( Mw/ Mn), ranging from 4 to 12.

Abstract: A sheet comprising a non-woven fabric in which ultra-fine fibers of a single fiber thickness of 0.5 dtex or less are entangled and an elastomeric binder mainly composed of a polyurethane, wherein the polyurethane is a polycarbonate-based polyurethane having a polycarbonate skeleton represented by both of the following general formulas (1) and (2), and having a gelation point of 2.5 ml or more and less than 6 ml. R1 and R2 are aliphatic hydrocarbon groups with 7 to 11 carbons, and they may be same or different, n and m are positive integers, and when R1 and R2 are different, it is a block copolymer or a random copolymer. R3 and R4 are aliphatic hydrocarbon groups with 3 to 6 carbons, and they may be same or different, x and y are positive integers, and when R3 and R4 are different, it is a block copolymer or a random copolymer.

Abstract: A cosmetic wipe that contains a first nonwoven layer having first and second opposing surfaces is provided. The first nonwoven layer contains fibers formed from a polymer composition and is generally opaque in nature. A second nonwoven layer is laminated to the first surface of the first nonwoven layer. The second nonwoven layer contains a colorant that imparts a certain color to the second layer. Prior to use, the colored second layer is not generally visible when viewed from the second surface of the first layer due to the opaque nature of the first layer. However, sebum or other bodily oils absorbed by the first layer during use can prevent light from adequately reflecting from the layer. Thus, at least a portion of the first layer becomes translucent or transparent so that the color of the second layer becomes visible to a user. This provides a variety of benefits, including the ability for a user to evaluate if or how much sebum was removed from the skin so that makeup, etc.

Abstract: The invention relates to the textile containing at least one layer of polymeric nanofibres having diameter to 600 nanometres produced through electrostatic spinning of the polymer solution. The polymeric nanofibres contain particles of low-molecular substance dissolved or dispersed in solution of polymer which is subject to electrostatic spinning, possibly particles of low molecular substance which was created through a consequent chemical reaction of the original low molecular substance dissolved or dispersed in solution subjected to electrostatic spinning.

Abstract: PROBLEM TO BE SOLVED: To provide an elastic nonwoven fabric with a good elasticity, adequate strength under elongation, good antiblocking property and favorable feeling, suitable for fiber products, at low cost, as well as fiber products using the same. SOLUTION: An elastic nonwoven fabric comprising long elastomeric fiber and nonelastomeric fiber in a weight ratio within a range from 50/50 to 95/5, which has an elongation recovery rate of the elastic nonwoven fabric after 50% elongation equal to or higher than 70%, and a resistance to peel two sheets of the nonwoven fabric apart equal to or lower than the strength of the fabric under 50% elongation; as well as fiber products using the same.

Abstract: The present invention provides a non-woven fabric for an alkaline battery separator comprising semi-aromatic polyamide fibers comprising a dicarboxylic acid component, in which 60 mol % or more of the dicarboxylic acid component is an aromatic carboxylic acid component, and a diamine component, in which 60 mol % or more of the diamine component is an aliphatic alkylene diamine having 6 to 12 carbon atoms, and ethylene/vinyl alcohol copolymer fibers; wherein, the separator non-woven fabric has superior alkaline resistance in which the weight loss rate after 20 days is 5% or less in an alkaline resistance test at 90° C. in aqueous KOH solution having a specific gravity of 1.30. Consequently, since the present invention enables rapid charging and large-current discharging while also allowing thickness to be reduced for higher capacity, it can be preferably used as a non-woven fabric for an alkaline battery separator.

Abstract: Organic inherently conductive polymers, such as those based on polyaniline, polypyrrole and polythiophene, are formed in situ onto polymeric surfaces that are chemically activated to bond, ionically, the conductive polymers to the substrates. The polymeric substrate is preferably a preshaped or preformed thermoplastic film, fabric, tube, or a medical device for tissue repair regeneration and/or replacement, although other forms of thermoplastic and thermoset polymers can be used as the substrates for pretreatment using, most preferably, C-succinylation-based processes followed by exposure to an oxidatively polymerizable compound capable of forming an electrically conductive polymer. The resultant conductive surface imparts unique properties to the substrates and allows their use in antistatic clothing, surface conducting films for electronic components and the like, and electromagnetic interference shielding for civilian and military installations as well as implantable medical devices.

Abstract: A method for producing a non-chemically crosslinked hyaluronan is provided which involves contacting a sample of hyaluronan with an acidic solvent/water mixture for a period of time and at a temperature sufficient to effect crosslinking, wherein the acidic solvent/water mixture has a content of a solvent sufficient to prevent dissolution of said hyaluronan and wherein the solvent is miscible with water, and an amount of an acid sufficient to effect crosslinking of the hyaluronan, and the crosslinked, water resistant non-woven hyaluronan resulting therefrom.

Abstract: This invention relates to a nonwoven article comprising a heterogeneous blend comprising: 1) from 60 to 99 weight percent of one or more semi-crystalline polymers (based upon the weight of the semi-crystalline and semi-amorphous polymers), each semi-crystalline polymer comprising propylene and from 0 to 5 weight % alpha-olefin comonomer (based upon the weight of the polymer), said semi-crystalline polymers each having a melting point between 100 and 170° C. and a melt flow rate of 2000 dg/min or less; and 2) from 1 to 40 weight % of one or more semi-amorphous polymers (based upon the weight of the semi-crystalline and semi-amorphous polymers), each semi-amorphous polymer comprising propylene and from 10 to 25 weight % of one or more C2 and or C4 to C10 alpha-olefin comonomers, said semi-amorphous polymers each having: a) heat of fusion of 4 to 70 J/g; b) a Melt Flow Rate of 0.

Abstract: The present invention is aimed at a method of providing wettability to polyester fibers or filaments, to woven or nonwoven fabrics made therefrom and to resultant articles of manufacture. The method comprises melt extruding a mixture comprising a polyester and one or more alkyl metal sulfonates where the metal is Na, Li or K and the alkyl is straight or branched chain alkyl of 12 to 15 carbon atoms, or is straight or branched chain alkenyl of 12 to 18 carbon atoms. The alkyl metal sulfonates are present from about 2% to about 5% by weight based on the weight of the polyester. A post treatment step such as an alkaline treatment step is not included. The melt extrusion mixtures do not include certain additives such as polyoxyalkylene compounds, alkylmonoethonolamide compounds, alkyldiethanolamine compounds and polyetheramide compounds.

Abstract: An outer cover for use with an absorbent article having a layer of nonwoven fibrous material and optionally including a polymeric layer laminated or printed onto the layer of nonwoven fibrous material. The outer cover includes at least one plastic component and at least one elastic component in the nonwoven fibrous material and/or optional polymeric layer. The outer cover can have different structural combinations of spunbond fibers, meltblown fibers, and/or nanofibers. The combination of plastic and elastic components results in an outer cover that has favorable mechanical, physical, and aesthetic properties. The outer cover can be rendered either uniaxially or biaxially stretchable via a mechanical activation process.

Abstract: This invention is directed to an improved nonwoven product comprising a nonwoven web of fibers bonded together with a sufficient amount of binder comprised of a polymer comprised of vinyl acetate, ethylene, and a crosslinking monomer to form a self-sustaining web. The improvement in the nonwoven product resides in the use of a polymer having a crystalline melting point (Tm) ranging from 35 to 90° C., preferably 50 to 80° C.; measured at a heat rate of 20° C./minute. The polymer should have a crystalline heat of fusion (Hf), which typically range from about 2 to about 50 joules per gram and a low glass transition temperature (Tg), e.g., from 10 to ?40° C., typically ?15 to ?35° C.

Abstract: An elastic laminate comprising an elastic substrate bonded by point bonding to at least one extensible nonwoven web comprising thermoplastic fibers or filaments bonded by point bonding. The bonding points of the extensible nonwoven web are disposed in concentrated areas that are combined with areas having a substantially lower density of bonding points. Also disclosed is a method of making an elastic laminate comprising the steps of forming the nonwoven web, providing an elastic substrate adjacent the nonwoven web, and point bonding the elastic substrate and the nonwoven web to provide the elastic laminate.

Abstract: Nonwoven fibrous webs including amorphous polymeric fibers with improved and/or more convenient bondability are disclosed. The nonwoven fibrous webs may include only amorphous polymeric fibers or they may include additional components in addition to amorphous polymeric fibers. The amorphous polymeric fibers within the web may be autogeneously bonded or autogeneously bondable. The amorphous polymeric fibers may be characterized as varying in morphology over the length of continuous fibers so as to provide longitudinal segments that differ from one another in softening characteristics during a selected bonding operation.

Abstract: An ink-printed substrate web exhibiting ink rub-off resistance is disclosed. The substrate web is printed with an ink composition to form an ink film on the substrate web. The ink-printed substrate web being coated with a coating composition to form a coating film on the ink film. At least one of the ink composition and the coating composition forms a cross-linked structure within the film thereof and forms a cross-linked structure with the other composition between the ink film and the coating film. A disposable absorbent article using the ink-printed substrate web is also disclosed.

Abstract: The present invention provides non-woven laminate that is not subjected to final consolidation by a binder and the production thereof. The laminate includes at least one non-woven mat containing glass staple fibers pre-consolidated with a resin, and at least one non-woven layer of synthetic fibers. The synthetic non-woven layers and the pre-consolidated non-woven mat of glass fibers are bounded together by needling such that a portion of the fibers of the upper synthetic non-woven layer passes through the non-woven mat of glass fibers possibly through the underlying synthetic non-woven layer. The synthetic fibers are heat shrunken and the laminate is binder free.

Abstract: This invention provides multi-layered composites, laminates and composite joints in which at least one resin-impregnated, fiber-containing layer is joined or laminated to a core layer having a lower flexural modulus or higher elongation at break, higher toughness, or a combination of all or some of these properties. The multi-layer composite produced by laminating or joining these materials together has improved shearout, impact and cutting resistance, since stresses caused by outside forces can be more widely distributed throughout the composite.

Abstract: A neckable nonwoven web is provided with a central region and two edge regions, the central region being selectively easier to neck than the two edge regions. The nonwoven fibers in the central region have a polymer composition and/or physical properties which differ from the nonwoven fibers in the two edge regions. The selectively easier necking in the central region causes the central region to neck to about the same extent as the two edge regions, which otherwise would experience greater necking than the central region if the starting nonwoven web were completely uniform. Necked nonwoven webs and neck-bonded laminates made using the improved neckable nonwoven web, are also provided.

Abstract: A system for utilizing a hazardous apparatus with a pad of fibrous fabric embedded in cement to shield a protectable surface from hazards produced by the hazardous apparatus.

Abstract: A material to reduce the effects of trauma received from the impact of a projectile. One embodiment is a needle-punched, non-woven material including at least one type of ballistic fibers selected and oriented to provide a cushioning effect and maintain a high compressive restitution constant. A percentage of the fibers are oriented with at least their ends lying approximately perpendicular to the fabric plane and/or oriented to lie in a waveform generally along or parallel to the fabric plane. This enables the ends of the fibers lying perpendicular to the fabric plane to cushion the impact from the projectile by dissipating energy through compressional resistance, and the fibers along the fabric plane to reduce energy through dispersal along fiber lines, thereby reducing the trauma resulting from an impact.

Abstract: A dustproof clothing comprises a fabric, and at least part of the fabric comprises a dustproof fiber containing a photocatalyst and a dust-collecting agent. The dust-collecting agent may comprise a quadrivalent metal phosphate and a bivalent metal hydroxide. The photocatalyst may comprise an optical semiconductor (e.g., an oxide semiconductor such as titanium dioxide). In the dustproof fiber, the proportion of the photocatalyst may be about 0.1 to 25 parts by weight relative to 100 parts by weight of the dustproof fiber, and the proportion of the dust-collecting agent may be about 1 to 25 parts by weight relative to 100 parts by weight of the dustproof fiber. Since the dust collection efficiency of the fabric in the dustproof clothing is not less than 70% and the air permeability of the fabric is about 8 to 100 cm/second, the dustproof clothing is suited to a clothing for a clean room.

Abstract: Disclosed herein is a process for producing a fibrous material for a member with which an ink-jet ink comes into contact, including the step of melt spinning a thermoplastic resin, the process comprising the step of treating a spun yarn by bringing it into contact with a glycol added with ethylene oxide.

Abstract: A resin-impregnated endless belt for a long nip press or calender of the shoe type, or for other papermaking and paper-processing applications, has a base fabric in the form of an endless loop with an inner surface, an outer surface, a machine direction and a cross-machine direction. The base fabric has machine-direction (MD) structural elements and cross-machine-direction (CD) structural elements in an open structure wherein at least some of the MD structural elements and CD structural elements are spaced apart from one another. The MD structural elements cross the CD structural elements at a plurality of crossing points, where they are joined to one another by mechanical, chemical or thermo-bonding means. A coating of a first polymeric resin is on the inner surface of the base fabric. The first polymeric resin impregnates and renders the base fabric impermeable to liquids, and forms a layer on the inner surface thereof. The coating is smooth and provides the belt with a uniform thickness.