US20080233825A1 - Articles Including High Modulus Fibrous Material - Google Patents
Articles Including High Modulus Fibrous Material Download PDFInfo
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- US20080233825A1 US20080233825A1 US11/688,958 US68895807A US2008233825A1 US 20080233825 A1 US20080233825 A1 US 20080233825A1 US 68895807 A US68895807 A US 68895807A US 2008233825 A1 US2008233825 A1 US 2008233825A1
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- Prior art keywords
- fibrous material
- composite sheet
- high modulus
- sheet material
- thermoplastic
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D5/00—Roof covering by making use of flexible material, e.g. supplied in roll form
- E04D5/10—Roof covering by making use of flexible material, e.g. supplied in roll form by making use of compounded or laminated materials, e.g. metal foils or plastic films coated with bitumen
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B11/00—Layered products comprising a layer of bituminous or tarry substances
- B32B11/10—Layered products comprising a layer of bituminous or tarry substances next to a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4209—Inorganic fibres
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4374—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece using different kinds of webs, e.g. by layering webs
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
- D04H1/498—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres entanglement of layered webs
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
- D04H1/593—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives to layered webs
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
- Y10T442/681—Spun-bonded nonwoven fabric
Definitions
- the present invention relates to textile products useful as supporting substrates.
- Synthetic nonwoven sheet materials have been used as components in a wide variety of products, including supporting substrates for roofing membranes, floor coverings, and the like. Many applications require a supporting substrate that exhibits good mechanical properties. In addition, in many applications, the nonwoven sheet materials can be exposed to varying temperature conditions during installation and subsequent use. Accordingly, such applications can require a substrate having good dimensional stability to minimize distortion of the product.
- U.S. Pat. No. 5,118,550 to Baravian et al. is directed to a substrate stated to exhibit good dimensional stability, even under conditions of production and subsequent treatments and use, such as bituminous impregnation.
- the substrate can include a synthetic nonwoven material in combination with high modulus threads arranged parallel to each other in the lengthwise direction.
- U.S. Pat. No. 5,856,243 to Geirhos et al. is directed to a composite including a synthetic fiber textile sheet reinforced with a hybrid yarn.
- the hybrid yarn includes reinforcing fibers such as glass fibers and can be present in the composite as a warp thread or as a net construction.
- the nets are grids formed by mutually angled sets of parallel threads fixed to one another at their crossing points, with at least one set of parallel threads of the net including the hybrid yarns.
- Such products can, however, suffer various drawbacks. Regularly distributing the fiberglass yarns in the machine direction can improve mechanical properties in the machine direction of the product. Improvements in mechanical properties in the machine direction, however, can come at the sacrifice of mechanical properties in the cross machine or transverse direction of the product.
- many products, such as roofing membranes are subject to stresses in all directions of the product, and not just in the machine direction.
- a roof to which the membrane is attached can be subject to variances in temperatures, humidity and other environmental conditions. As a result, the roof can expand and contract in any and all directions. This in turn can result in failure of the roofing product. Even products including high modulus nets with intersecting longitudinal and transverse threads may not withstand the force of multidirectional stresses, thereby resulting in failure of this type of product as well.
- the present invention is directed to composite sheet materials that include substantially randomly oriented high modulus fibrous material as a component thereof.
- the composite sheet materials of the present invention further include a nonwoven web of thermoplastic fibrous material.
- Incorporating substantially randomly oriented high modulus fibrous material into the composite sheet materials of the invention can result in a substantially isotropic product, that is, a product exhibiting substantially similar machine direction and cross direction properties.
- the isotropic nature of the product can in turn result in improved dimensional stability as compared to a similar product including high modulus fibrous materials arranged parallel to one another.
- the resultant composite sheet materials can be particularly useful as a roofing membrane because the product can exhibit minimal distortion when subject to multidirectional stresses resulting from temperature variances.
- the composite sheet material includes substantially randomly oriented high modulus fibrous material, a nonwoven web of thermoplastic fibrous material, and a substantially fluid impervious layer.
- the composite sheet materials in accordance with this aspect of the invention can be useful as barriers to the transmission of fluids, such as water, and thus can be useful in various applications requiring protection from fluid penetration, such as membranes used in the construction of roofs, basements, and the like.
- the composite sheet materials can further include additional layers, depending upon the particular use of the product. For example, for various construction applications such as roofing membranes, it may be useful to include a particulate outer layer to impart UV protection.
- the composite sheet material includes substantially randomly oriented high modulus fibrous material and a nonwoven web of substantially continuous thermoplastic filaments, such as a nonwoven web of spunbonded filaments.
- the composite sheet material can include at least one additional layer, for example, an additional web of substantially continuous thermoplastic filaments positioned to sandwich the high modulus fibrous material between the nonwoven webs.
- the nonwoven web of substantially continuous thermoplastic fibrous materials can impart additional advantageous properties to the resultant product, such as improved strength, stability and abrasion resistance.
- FIGS. 1A and 1B are cross sectional views of composite sheet materials including a substantially fluid impervious component in accordance with exemplary embodiments of the invention
- FIG. 2 is a top perspective view of an exemplary layer of substantially randomly oriented high modulus fibrous material useful as a component in composite sheet materials of the invention
- FIG. 3 is a top perspective view of another exemplary layer of substantially randomly oriented high modulus fibrous material useful as a component in composite sheet materials of the invention
- FIGS. 4A and 4B are cross sectional views of composite sheet materials including a nonwoven web of substantially continuous thermoplastic filaments in accordance with other exemplary embodiments of the invention.
- FIGS. 5A and 5B are cross sectional views of composite sheet materials in accordance with other exemplary embodiments of the invention.
- FIGS. 6A and 6B are cross sectional views of composite sheet materials in accordance with other exemplary embodiments of the invention.
- relative terms such as “lower” or “bottom” and “upper” or “top,” may be used herein to describe one element's relationship to another element as illustrated in the Figures.
- relative terms such as “underlying,” “underneath,” “below,” and “beneath” may also be used to describe one element's relationship to another element as illustrated in the Figures.
- relative terms are intended to encompass different orientations of the articles in addition to the orientation depicted in the Figures.
- such terms can be used to describe the relative positions of element(s) to one another, and for example, the terms can refer to an element that is “beneath” or “underlying” another element, with or without other intervening elements therebetween.
- Embodiments of the present invention are described herein with reference to various cross-sectional perspective illustrations that are schematic illustrations of idealized embodiments of the present invention. As such, variations from the shapes of the illustrations as a result, for example, of manufacturing techniques are to be expected. Thus, embodiments of the present invention should not be construed as limited to the particular shapes of components illustrated herein but are to include deviations in shapes that result, for example, from manufacturing and other variances.
- the composite sheet materials and their respective components illustrated in the figures are schematic in nature and their shapes are not intended to illustrate the precise shape of a component of a sheet material and are not intended to limit the scope of the present invention.
- FIGS. 1A and 1B are schematic cross sectional views of exemplary embodiments of the composite sheet materials of the invention, designated generally as 10 and 10 ′ respectively, in FIGS. 1A and 1B .
- the composite sheet materials 10 and 10 ′ can include at least one, and optionally more than one, layer of substantially randomly oriented high modulus fibrous material, designated as 12 and 12 ′ respectively, in FIGS. 1A and 1B .
- the exemplary composite sheet materials 10 and 10 ′ can further include at least one, and optionally more than one, nonwoven web including thermoplastic fibrous materials, designated as 14 and 14 ′ respectively, in FIGS. 1A and 1B .
- the composite sheet material can further include at least one, and optionally more than one, substantially fluid impervious layer, designated as 16 and 16 ′, respectively, in FIGS. 1A and 1B .
- FIG. 1A illustrates a composite sheet material 10 in which nonwoven web 14 including thermoplastic fibrous material can be disposed between substantially randomly oriented high modulus fibrous material 12 and substantially fluid impervious layer 16 .
- the composite sheet material 10 can optionally include at least one (or more) additional substantially fluid impervious layer(s), such as layer 17 in FIG. 1A .
- layers 16 and 17 can be arranged to sandwich substantially randomly oriented high modulus fibrous material 12 and nonwoven web 14 .
- composite sheet material 10 can further optionally include one or more additional layer(s), for example, disposed between any combination of layers 12 , 14 , 16 , and 17 , and/or as additional layers 18 , 18 sandwiching the composite structure 10 , as illustrated.
- additional layer(s) for example, disposed between any combination of layers 12 , 14 , 16 , and 17 , and/or as additional layers 18 , 18 sandwiching the composite structure 10 , as illustrated.
- FIG. 1B illustrates another exemplary embodiment of a composite sheet material 10 ′ of the invention, in which substantially randomly oriented high modulus fibrous material 12 ′ can be disposed between nonwoven web 14 ′ including thermoplastic fibrous material and substantially fluid impervious layer 16 ′.
- the composite sheet material 10 ′ can optionally include at least one (or more) substantially fluid impervious layer(s), designated in FIG. 1B as 17 ′.
- layers 16 ′ and 17 ′ can be arranged so as to sandwich substantially randomly oriented high modulus fibrous material 12 ′ and nonwoven web 14 ′.
- composite 10 ′ can optionally include one or more additional layers, for example, disposed between any combination of layers 12 ′, 14 ′, 16 ′, and 17 ′ and/or as additional layers 18 ′, 18 ′ sandwiching the composite structure 10 ′, as illustrated.
- composite sheet materials 10 and/or 10 ′ can further one or more additional optional layers, such as layers 18 and/or 18 ′ as illustrated in FIGS. 1A and 1B , respectively.
- layer(s) 18 and/or 18 ′ can be positioned along one, or both, outer surfaces of composite sheet material 10 and/or 10 ′.
- additional optional layers can be present in other combinations and other or additional locations within the composite sheet material of the invention.
- fibrous material includes fibrous articles such as but not limited to staple fibers, continuous filaments, yarns, tows, fiber bundles, meltblown fibers, spunbonded filaments, and the like, as well as combinations thereof.
- fiber as used herein can refer both to fibers of finite length, such as conventional staple fiber, as well as substantially continuous fibrous structures, such as continuous filaments, unless otherwise indicated.
- fiber as used herein can also include crimped, uncrimped, and textured fibers and filaments.
- Fibers useful in the invention can be hollow or non-hollow fibers, and further can have a substantially round or circular cross-section or non-circular cross-section (for example, “shaped fibers” or fibers with shaped cross-sections, such as but not limited to oval fibers, rectangular fibers, multi-lobed or lobal fibers, delta cross-sections, and the like).
- the fibers can also be monocomponent fibers or multicomponent fibers, in which at least one, or more, components thereof includes a high modulus material and/or thermoplastic polymer as discussed in more detail herein.
- Multicomponent fibers can have a variety of fiber configurations as known in the art so long as the fiber components are arranged so as to form distinct cross-sectional segments along at least a portion of the length of the fiber.
- the multicomponent fibers can include substantially non-occluded segments, such as those present in pie/wedge fibers, side-by-side fibers, segmented fibers, and the like.
- the present invention is not limited to the use of non-occluded fiber constructions, and accordingly other fiber configurations can also be useful in accordance with the present invention, including those in which at least a portion of a one fiber segment is partially or fully occluded by an adjacent segment, such as found in islands in the sea fiber constructions, sheath/core fibers, and the like.
- Multicomponent fibers useful in the invention can also include splittable multicomponent fibers, i.e., multicomponent fibers capable of separating into microfilaments upon appropriate chemical and/or mechanical action.
- multicomponent fibers useful in the invention can be substantially nondissociable.
- the substantially randomly oriented high modulus fibrous material of the composite sheet material of the invention can include any of the types of high modulus fibrous materials known in the art.
- Exemplary high modulus fibrous materials useful in the present invention include without limitation glass fibrous material, basalt fibrous material, aramid fibrous material, aromatic polyamide fibrous materials, high tenacity polyester fibrous materials, carbon fibrous material, metal fibrous material, and combinations thereof.
- the substantially randomly oriented high modulus fibrous material can have a basis weight ranging from about 5 to about 500 grams per square meter (gsm).
- the present invention is not so limited, however, and substantially randomly oriented high modulus fibrous materials having a basis weight outside of this range can also be useful in the invention.
- substantially randomly oriented refers to fibrous materials in any suitable form such as described herein, including staple fibers and continuous filaments, which are substantially randomly arranged.
- the substantially randomly oriented high modulus fibrous material of the invention is contrasted to prior high modulus fibrous material in which the high modulus fibrous material is in the form of, for example, substantially parallel strands and/or net constructions.
- Exemplary layers of substantially randomly oriented high modulus fibrous materials are illustrated in FIGS. 2 and 3 .
- FIG. 2 illustrates a top perspective view of a web 20 including a plurality of substantially randomly oriented high modulus continuous filaments 22
- FIG. 3 illustrates a top perspective view of a web 30 including a plurality of substantially randomly oriented high modulus staple fibers 32 .
- the skilled artisan will appreciate that the randomly oriented fibrous materials of the invention can accordingly include fibers, filaments, etc. extending in multiple directions, which are not aligned predominantly in the machine, transverse, or both, direction of the sheet material.
- substantially random orientated high modulus fibrous material can result in a substantially isotropic product (i.e., a product exhibiting substantially similar machine direction and cross direction properties).
- the isotropic nature of the product can in turn result in improved dimensional stability as compared to a similar product including high modulus fibrous materials arranged parallel to one another.
- the isotropic nature of the product can provide advantages in use, particularly in applications subject to stresses in multiple directions, such as can result, for example, for products subject to temperature variances.
- thermoplastic fibrous material of the nonwoven web can include any of the types of polymers suitable for the formation of a particular article, i.e., can be any of the types of polymer resins known in the art capable of being formed into articles such as fibrous materials (including without limitation fibers, filaments, yarns, nonwoven articles, and the like, as discussed herein), and the like, as well as combinations thereof.
- polyesters including polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polytrimethylene terephthalate (PTT), poly(1,4-cyclohexylene dimethylene terephthalate) (PCT), and aliphatic polyesters such as polylactic acid (PLA); polyolefins, including polypropylene, polyethylene, polybutene, and polymethyl pentene; polyamides, including nylon 6 and nylon 6,6; and the like, as well as co- and ter-polymers of these and other suitable polymers, and combinations thereof.
- Polyesters can be particularly advantageous in various embodiments of the invention, although the invention is not limited to use of polyesters.
- the nonwoven web can have a basis weight ranging from about 5 to about 500 grams per square meter (gsm). The present invention is not so limited, however, and nonwoven webs having a basis weight outside of this range can also be useful in the invention.
- Substantially randomly oriented high modulus fibrous material and/or nonwoven webs including thermoplastic fibrous materials useful in the present invention can be made according to any of the known processes for making fibrous materials, including nonwoven processes that use mechanical, electrical, pneumatic, or hydrodynamic means for forming or assembling fibers into a web, for example carding, wetlaying, air laying, spunbonding, spunlacing, meltblowing, and the like.
- Suitable fiber randomizing techniques can optionally be employed to further increase the disorder of the fibrous materials, such as the substantially randomly oriented high modulus fibrous materials useful in the invention.
- randomizing doffers and/or scrambling rollers can be used in a carding system to increase the disorder of the fibrous network.
- composite sheet material 10 and/or 10 ′ can include substantially randomly oriented high modulus fibrous material 12 and/or 12 ′ commingled with the thermoplastic fibrous material of nonwoven web 14 and/or 14 ′. Fibrous materials including commingled high modulus fibrous materials and thermoplastic material can be produced using suitable processes.
- Exemplary commingling processes useful in the invention can include without limitation carding processes in which the respective fibrous materials (high modulus and thermoplastic) are mixed in a suitable mixing device prior to web formation, and/or carding processes in which high modulus fibers are sprayed, sprinkled or otherwise introduced into a web formed by a lower (inferior) crosslapper before combining with a web formed by an upper (superior) crosslapper.
- the fibrous materials can be bonded using techniques as known in the art, such as but not limited to mechanical bonding, such as hydroentanglement and needle punching, adhesive bonding, thermal bonding, and the like, to form a coherent fibrous structure.
- mechanical bonding such as hydroentanglement and needle punching
- adhesive bonding such as adhesive bonding
- thermal bonding and the like
- thermal bonding is through-air bonding, although other thermal bonding techniques, such as calendering, microwave or other RF treatments can be used.
- Substantially fluid impervious layers 16 , 17 , 16 ′, and/or 17 ′ can be formed of any of the types of substantially fluid impervious materials as known in the art.
- Exemplary substantially fluid impervious materials useful in the present invention include without limitation bituminous materials, synthetic polymeric materials, and combinations thereof.
- Exemplary bituminous materials include for example polymer modified bituminous materials.
- Exemplary synthetic polymeric materials include polymeric films.
- laminating or bonding of the substantially randomly oriented high modulus fibrous material and nonwoven web including thermoplastic fibrous material to the fluid impervious layer (such as a polymer film) can be achieved by adhesive lamination using a continuous or discontinuous layer of adhesive, thermal lamination, and the like.
- the substantially fluid impervious layer 16 , 17 , 16 ′ and/or 17 ′ can also be produced by direct extrusion of a film layer on the composite sheet material.
- One or more optional additional layers can be selected from any suitable material, depending on the end use of the composite sheet material.
- additional layers that can be useful in the composite sheet materials of the invention include particulate materials, woven materials, nonwoven materials, knit materials, films, and composites, such as film-coated nonwovens.
- the composite sheet material can include particulate materials, such as crushed stone (including gravel), sand, and the like, adhered to one or both outer surface(s) of the composite.
- the composite sheet material can include at least one or more polymeric film(s) layers in combination with the other composite components.
- a composite 10 and/or 10 ′ including at least one layer 18 and/or 18 ′ of particulate material and at least another layer 18 and/or 18 ′ of a polymeric film.
- the type (particulate, film, etc.), number (one or more) and position (along one or both outer surfaces, positioned as an inner layer, etc.) of such optional layers can vary, and the present invention is not limited to the embodiments illustrated in FIGS. 1A and 1B .
- Composite sheet material 10 and/or 10 ′ can be formed by adhering the respective component of the composite, including substantially randomly oriented high modulus fibrous material 12 and/or 12 ′ and nonwoven web 14 and/or 14 ′, using any suitable bonding or lamination techniques, including thermal, mechanical, and/or adhesive bonding techniques as described herein, as well as combinations thereof. Binder fibers can also be incorporated into one or more of the respective layers of the composite, and the composite thermally treated to activate the binder fibers.
- Other bonding or laminating techniques useful in the invention can include extrusion techniques, such as extrusion coating, direct extrusion, and the like and combinations thereof.
- a suitable adhesive can be applied to one or both outer surfaces of any of the substantially randomly oriented high modulus fibrous material 12 and/or 12 ′, nonwoven web 14 and/or 14 ′, and/or substantially fluid impervious layer 16 and/or 16 ′, individually or any combination thereto, as either a continuous or discontinuous coating, to form one or more adhesive layers.
- the adhesive can be applied continuously or intermittently by any accepted method including spraying, slot coating, meltblowing and the like.
- Suitable adhesives can be made from a variety of materials including but not limited to polyolefins, polyvinyl acetate polyamides, hydrocarbon resins, waxes, natural asphalts, styrenic rubbers, and blends thereof.
- the various components or layers of the desired composite sheet material can then be arranged as desired and pressure applied as appropriate to secure the respective layers to one another, for example, by directing the respective layers into a surface-to-surface relationship and passing the resultant product through cooperating pressure rolls.
- FIGS. 4A and 4B illustrate cross sectional views of other exemplary aspects of the composite sheet materials of the invention, designated as 40 and 40 ′, respectively.
- the composite sheet materials 40 and 40 ′ can include at least one, and optionally more than one, layer of substantially randomly oriented high modulus fibrous material, designated as 42 and 42 ′ respectively, in FIGS. 4A and 4B .
- the exemplary composite sheet materials 40 and 40 ′ can further include at least one, and optionally more than one, nonwoven web, designated as 44 and 44 ′ respectively, in FIGS. 4A and 4B .
- nonwoven web 44 and/or 44 ′ includes a plurality of substantially continuous thermoplastic filaments, such as spunbonded thermoplastic filaments.
- the composite sheet material 40 and/or 40 ′ can further include at least one, and optionally more than one, additional layer.
- FIG. 4A illustrates an embodiment in accordance with this aspect of the invention in which the additional layer is a layer 46 of high modulus fibrous material positioned to sandwich nonwoven web 44 between layers 42 and 46 .
- layer 46 can include substantially randomly oriented high modulus fibrous material as described herein.
- layer 46 can include substantially oriented high modulus fibrous material, such as represented by a net material or a plurality of substantially parallel glass strands, so long as composite sheet material 40 includes at least one layer (such as layer 42 ) of substantially randomly oriented high modulus fibrous material.
- FIG. 4A illustrates an embodiment in accordance with this aspect of the invention in which the additional layer is a layer 46 of high modulus fibrous material positioned to sandwich nonwoven web 44 between layers 42 and 46 .
- layer 46 can include substantially randomly oriented high modulus fibrous material as described herein.
- layer 46 can include substantially oriented high modulus fibrous
- Composite sheet materials in accordance with this aspect of the invention can further include other optional layers, such as any of the types of composite components as described herein, including but not limited to particulate material layers, substantially fluid impervious layers, and the like, and combinations thereof.
- FIGS. 5A and 5B are cross sectional views of other exemplary aspects of the composite sheet materials of the invention, designated as 50 and 50 ′, respectively.
- the composite sheet materials 50 and 50 ′ can include at least one layer of high modulus fibrous material, designated as 52 and 52 ′ respectively, in FIGS. 5A and 5B .
- the exemplary composite sheet materials 50 and 50 ′ can further include at least one, and optionally more than one, nonwoven web including thermoplastic fibrous materials, designated as 54 and 54 ′ respectively, in FIGS. 5A and 5B .
- nonwoven web 54 and/or 54 ′ can be any of the types of nonwoven webs as described herein, including without limitation spunbonded webs, meltblown webs, carded webs, and the like and combinations thereof.
- composite sheet materials 50 and 50 ′ further include at least one additional layer 56 and/or 56 ′ of high modulus fibrous material.
- at least one of the layers of high modulus fibrous material includes substantially randomly oriented high modulus fibrous material as described herein.
- the other of the layer(s) of high modulus fibrous materials can also substantially randomly oriented high modulus fibrous material, or alternatively can include substantially oriented high modulus fibrous material, such as represented by a net material or a plurality of substantially parallel glass strands, so long as composite sheet material 50 and/or 50 ′ includes at least one layer of substantially randomly oriented high modulus fibrous material.
- FIG. 5A illustrates an embodiment in accordance with this aspect of the invention in which layers 52 and 56 of high modulus fibrous material sandwich nonwoven web 54 .
- FIG. 5B illustrates an alternative embodiment in accordance with this aspect of the invention in which layer 56 ′ of high modulus fibrous material and nonwoven web 54 ′ sandwich layer 52 ′ of high modulus fibrous material.
- Composite sheet materials in accordance with this aspect of the invention can further include other optional layers, such as any of the types of composite components as described herein, including but not limited to particulate material layers, substantially fluid impervious layers, and the like, and combinations thereof.
- FIGS. 6A and 6B are cross sectional views of other exemplary aspects of the composite sheet materials of the invention, designated as 60 and 60 ′, respectively.
- the composite sheet materials 60 and 60 ′ can include at least one layer of substantially randomly oriented high modulus fibrous material, designated as 62 and 62 ′ respectively, in FIGS. 6A and 6B .
- the exemplary composite sheet materials 60 and 60 ′ can further include at least two nonwoven webs including thermoplastic fibrous materials, designated as 64 and 66 in FIG. 6A and as 64 ′ and 66 ′ in FIG. 6B .
- the nonwoven webs can be any of the types of nonwoven webs as described herein, including without limitation spunbonded webs, meltblown webs, carded webs, and the like and combinations thereof.
- FIG. 6A illustrates an embodiment in accordance with this aspect of the invention in which nonwoven webs 64 and 66 sandwich layer 62 of substantially randomly oriented high modulus fibrous material.
- FIG. 6B illustrates an alternative embodiment in accordance with this aspect of the invention in which nonwoven web 64 ′ and layer 62 ′ of substantially randomly oriented high modulus fibrous material sandwich nonwoven web 66 ′.
- Composite sheet materials in accordance with this aspect of the invention can further include other optional layers, such as any of the types of composite components as described herein, including but not limited to particulate material layers, substantially fluid impervious layers, and the like, and combinations thereof.
- the composite sheet materials of the present invention can be useful in numerous products and applications.
- the composite sheet materials can be have applicability in membranes useful in construction, such as but not limited to membranes for roofing, foundations, basements, walls, and the like; geotextiles such as geomembranes; backings for flooring including polyvinyl chloride (PVC) sheet and tile flooring and carpeting; and the like.
- Geomembranes include, for example, substantially fluid impermeable membranes useful as cut-offs and liners, such as used in canals, ponds, hazardous, municipal, and agricultural waste facilities, and the like.
- a nonwoven composite sheet material in accordance with an exemplary embodiment of the present invention can be prepared using a continuous multi-spinning beam process as follows.
- a nonwoven sheet of polyester fibrous materials can be produced using a continuous filament process such as spunbonding. Thereafter high modulus fibrous materials, such as glass staple fibers or glass cut yarns, are sprayed or otherwise applied onto a surface of the spunbonded polyester web.
- An additional layer of continuous filament polyester material, such as a second polyester spunbonded web can thereafter be formed on the exposed surface of the glass fibrous web to form a sandwich structure including outer polyester spunbonded webs and an inner glass fibrous web.
- the webs can be bonded to form a coherent laminate structure using any suitable bonding technique, including chemical adhesion, thermal bonding, mechanical bonding (such as needling or hydroentanglement), and combinations thereof.
- a nonwoven composite sheet material in accordance with another exemplary embodiment of the present invention can be prepared as follows.
- a nonwoven sheet of polyester staple fibers can be produced using a carding process.
- High modulus fibrous materials such as glass staple fibers or glass cut yarns, are sprayed or otherwise applied onto a surface of a lower (inferior) crosslapper and prior to this lower web being combined with a web of polyester staple fibers being formed by an upper (superior) crosslapper, to form a composite sheet material including outer layers of polyester staple fibers sandwiching an inner layer of glass staple fibers.
- the webs can be bonded to form a coherent laminate structure using any suitable bonding technique, including chemical adhesion, thermal bonding, mechanical bonding (such as needling or hydroentanglement), and combinations thereof.
- a nonwoven composite sheet material in accordance with yet another exemplary embodiment of the present invention can be prepared as follows.
- High modulus fibers such as glass fibers
- thermoplastic fibers such as polyester fibers
- the web of commingled polyester and glass fibers can be bonded to form a coherent laminate structure using any suitable bonding technique, including chemical adhesion, thermal bonding, mechanical bonding (such as needling or hydroentanglement), and combinations thereof.
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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US11/688,958 US20080233825A1 (en) | 2007-03-21 | 2007-03-21 | Articles Including High Modulus Fibrous Material |
EP20080004422 EP1972707B1 (fr) | 2007-03-21 | 2008-03-10 | Articles comprenant un matériau fibreux à haut module |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US11/688,958 US20080233825A1 (en) | 2007-03-21 | 2007-03-21 | Articles Including High Modulus Fibrous Material |
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US20080233825A1 true US20080233825A1 (en) | 2008-09-25 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US11/688,958 Abandoned US20080233825A1 (en) | 2007-03-21 | 2007-03-21 | Articles Including High Modulus Fibrous Material |
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US (1) | US20080233825A1 (fr) |
EP (1) | EP1972707B1 (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090193730A1 (en) * | 2007-08-07 | 2009-08-06 | Rick Pruet | Hurricane panel |
US20110299923A1 (en) * | 2010-06-07 | 2011-12-08 | Strad Energy Services Ltd. | Rig mat system and method of making the same |
WO2012064060A2 (fr) * | 2010-11-09 | 2012-05-18 | (주)엘지하우시스 | Dalle de tapis mince ayant une excellente stabilité dimensionnelle et procédé pour sa fabrication |
US20130065020A1 (en) * | 2011-09-13 | 2013-03-14 | Owens Corning Intellectual Capital, Llc | Granule coated waterproof roofing membrane |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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RU2016118988A (ru) * | 2013-10-18 | 2017-11-24 | Бонар Б.В. | Виниловое напольное покрытие |
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090193730A1 (en) * | 2007-08-07 | 2009-08-06 | Rick Pruet | Hurricane panel |
US20110299923A1 (en) * | 2010-06-07 | 2011-12-08 | Strad Energy Services Ltd. | Rig mat system and method of making the same |
US8545127B2 (en) * | 2010-06-07 | 2013-10-01 | Strad Energy Services Ltd | Rig mat system and method of making the same |
WO2012064060A2 (fr) * | 2010-11-09 | 2012-05-18 | (주)엘지하우시스 | Dalle de tapis mince ayant une excellente stabilité dimensionnelle et procédé pour sa fabrication |
WO2012064060A3 (fr) * | 2010-11-09 | 2012-09-07 | (주)엘지하우시스 | Dalle de tapis mince ayant une excellente stabilité dimensionnelle et procédé pour sa fabrication |
KR101276523B1 (ko) * | 2010-11-09 | 2013-06-18 | (주)엘지하우시스 | 치수안정성이 우수한 슬림형 카펫 타일 및 그 제조 방법 |
CN103209620A (zh) * | 2010-11-09 | 2013-07-17 | 乐金华奥斯有限公司 | 尺寸稳定性优秀的薄型方块地毯及其制造方法 |
US20130065020A1 (en) * | 2011-09-13 | 2013-03-14 | Owens Corning Intellectual Capital, Llc | Granule coated waterproof roofing membrane |
US9834935B2 (en) | 2011-09-13 | 2017-12-05 | Owens Corning Intellectual Capital, Llc | Granule coated waterproof roofing membrane |
Also Published As
Publication number | Publication date |
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EP1972707A1 (fr) | 2008-09-24 |
EP1972707B1 (fr) | 2013-09-18 |
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