US3658633A - Aggregates of mineral fibers and thermoplastic materials useful particularly as underlayers for structural sheathings for acoustic insulation - Google Patents

Aggregates of mineral fibers and thermoplastic materials useful particularly as underlayers for structural sheathings for acoustic insulation Download PDF

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US3658633A
US3658633A US3658633DA US3658633A US 3658633 A US3658633 A US 3658633A US 3658633D A US3658633D A US 3658633DA US 3658633 A US3658633 A US 3658633A
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underlayer
fibers
product
mat
elastomer
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Claude Jumentier
Alain Bonnet
Claude Boiteau
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Compagnie de Saint Gobain SA
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Compagnie de Saint Gobain SA
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Priority claimed from FR117218A external-priority patent/FR1539907A/fr
Priority claimed from FR151670A external-priority patent/FR94567E/fr
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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
    • D04H1/4218—Glass fibres
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
    • C04B26/02—Macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
    • C04B26/02—Macromolecular compounds
    • C04B26/04—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • 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
    • 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
    • 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
    • D04H1/587—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 characterised by the bonding agents used
    • 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
    • D04H1/64—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 the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
    • D04H1/645—Impregnation followed by a solidification process
    • 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
    • D04H3/002—Inorganic yarns or filaments
    • D04H3/004—Glass yarns or filaments
    • 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
    • D04H3/12—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 filaments or yarns secured together by chemical or thermo-activatable bonding agents, e.g. adhesives, applied or incorporated in liquid or solid form
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors
    • E04F15/20—Separately-laid insulating layers; Other additional insulating measures; Floating floors for sound insulation
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/0004—Compounds chosen for the nature of their cations
    • C04B2103/0006—Alkali metal or inorganic ammonium compounds
    • C04B2103/0009—Inorganic ammonium compounds
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/44—Thickening, gelling or viscosity increasing agents
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/52—Sound-insulating materials
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249924—Noninterengaged fiber-containing paper-free web or sheet which is not of specified porosity
    • Y10T428/24994—Fiber embedded in or on the surface of a polymeric matrix
    • Y10T428/249942—Fibers are aligned substantially parallel
    • Y10T428/249946—Glass fiber

Definitions

  • ABSTRACT The production of structural sheathings or facings having an underlayer affixed thereto, to serve as an acoustical insulating structural member, said underlayer being formed by the combination of mineral fibers, particularly glass fibers of relatively long length in interlaced condition, which is permeated with thermoplastic compositions comprising mixtures of one or more elastomers such as natural or artificial latex, and one or more adjuvants for promoting a chemical bond between the mineral fibers and elastomer component.
  • This underlayer is prepared by forming a mat by the deposition of the mineral fibers in successive layers, which is followed by the thorough impregnation of the fibers with an aqueous dispersion of said thermoplastic composition, the withdrawal of the excess of the latter from the impregnated mat, and the drying of the mat and the final heating thereof to attain an effective reticulation of plastic composition amongst the glass fibers before the mat is accumulated on a storage roller.
  • the final production step of gluing of the underlayers to a sheathing or other support is rendered more secure and satisfactory by partially or completely clogging the pores at one or both faces of the underlayer with a special filling layer before the glue is applied thereto.
  • the appearance of the underlayer on its support is improved, especially when the latter is a vinyl plastic, by removing the folds therefrom which are caused by the rolling up of the former on a reel in the course of its preparation.
  • the elimination of these folds is attained by heating the mat immediately prior to its fixing on its support to relieve slightly the binding of the layers of fibers by the thermoplastic material, which gives rise to a re-arrangement of the stratification of fibers adjacent to the surfaces of the underlayer.
  • the present invention has for its object the production of aggregates or compounds from mineral fibers, particularly glass fibers, and thermoplastic materials, which are designed in particular to be used as underlayers of sheathings which assure acoustic insulation. These sheathings are especially useful for sound-proofing floors and walls.
  • these products are constituted of mineral fibers, particularly glass fibers, the length of which is at least of the order of the decimeter, and the mean diameter of which is between microns and 40 microns, these fibers being interlaced in parallel planes to form a mat or padding, and joined together by one or several elastomers constituted by natural or artificial latexes to which are, added one or more adjuvants to assure a chemical bridge between the I glass and the elastomers and/or coagulation of the elastomer, the percentage by weight of the binder being between 20 percent and 50 percent relative to the total weight ofthe product.
  • the weight of the fiber mat may range between 150 to 300 grams per square meter.
  • lt is also the object of the invention to improve the adhesion between the juxtaposed surfaces of underlayers and sheathings when these are glued together, by modifying the contacting surface of the underlayer to prevent the migration of glue to the interior of the latter. This is done by partially or completely clogging the pores at this surface with a compatible mixture of mineral fibers, thermoplastic binder and filler.
  • the invention aims to improve the esthetic appearance of the combined underlayer and sheathing, especially when the latter is of vinyl plastic, by eliminating the transverse folds in the former, occasioned by the winding thereof on a storage drum, by a controlled heating of the underlayer immediately before the application of the plastic sheathing thereto.
  • the underlayers constituted by the products in accordance with the invention may be associated with pliable wall or floor coverings or with rigid wall or floor coverings.
  • the elastomer or elastomers in the form of aqueous emulsions used for the binder, with their specific agents of reticulation for the formation of a network, are of natural latex or synthetic latexes, more particularly of one of the following groups: polychloroprene, carboxylated butadiene styrene and acrylonitrile butadiene.
  • the adjuvants'assuring a homogeneous distribution of the elastomers in the fibrous mass during preparation of the underlayers designed for pliable sheathings may be the following:
  • a. cellulosic thickener for example, methyl cellulose
  • thermo-coagulant by acidification of the sizing for example: ammonium salts, particularly nitrate, sulfate, chlorate of ammonia.
  • the percentage of the elastomer or elastomers with adjuvants is between 20 percent and 40 percent by weight, with respect to the total weight of the underlayer in the case of wall sheathings. It is between 35 percent and 50 percent in the case of floor sheathings.
  • Wall sheathings may be formed, for example, of cloth. paper, etc., the floor sheathings may be of materials such as, for example,polyvinyl chloride, linoxyn, moquette carpet, velvet pile, etc.
  • the underlayer may be fixed or fastened to the sheathing by its direct formation on the sheathing, or through the intermediary of a glue or adhesive composition, for example, a synthetic resin base dispersed in the water or dissolved in a solvent.
  • a glue or adhesive composition for example, a synthetic resin base dispersed in the water or dissolved in a solvent.
  • the elastomer with its specific reticulating agent, is constituted by an aqueous emulsion of synthetic latex of the carboxylated butadiene styrene group.
  • the adjuvant which assures a homogeneous distribution of the elastomer in the original fibers by physical blocking of the elastomer before and during the removal of water during the drying phase, is constituted by a cellulosic thickener, for example, methyl cellulose, the viscosity of which increases very rapidly with the temperature.
  • the percentage of the elastomer is between 20 percent and 40 percent by weight with respect to the total weight of the underlayer in the case of wall sheathings and between 35 percentand 50 percent in the case of floor sheathings.
  • a treatment which consists in depositing on the surface of the underlayer coming in contact with the sheathing, a thin layer, such as a film of polyvinyl chloride, a layer of hutadiene styrene resin rich in styrene, an aqueous dispersion of polystyrene, glass muslin (cloth), etc., which permits a better distribution of the localized loads transmitted by the rigid sheathing and thereby reduces the permanent deformations of the assembly.
  • a thin layer such as a film of polyvinyl chloride, a layer of hutadiene styrene resin rich in styrene, an aqueous dispersion of polystyrene, glass muslin (cloth), etc.
  • Wall sheathings may be constituted, for example, by plates of wood, metal, glass-resin aggregates, etc.
  • Floor sheathings may themselves be constituted by flooring elements in the form of thin wooden sheets, plates of polyvinyl chloride with fillers and hardeners, etc.
  • the fixing of the underlayer to the sheathing may be attained by means of a glue constituted by a film having a synthetic resin base dispersed in water or dissolved in a solvent, for example, polyvinyl acetate in aqueous dispersion.
  • the mode of fabricating the underlayer may advantageously be as follows:
  • a homogeneous mixture is made of an elastomer or elastomers with their specific adjuvants.
  • the original fiber is saturated with this mixture by any appropriate procedure, such as by dipping, soaking, or steeping in an immersion bath, or by flooding, by spraying, etc., and the mat of original fibers, thus saturated with elastomer, is dried in any suitable way, by suction, compression, gravity, etc.
  • the dried original fiber is further dried thereafter in the course of the reticulation of the elastomer or elastomers at their specific temperature of reticulation or network formation.
  • drying by a rapid heating of the inner layers of the pad, for example, by means of heating by infra-red rays.
  • the end of drying and the reticulation may be realized by any appropriate means such as infra-red radiation, circulation of hot air, etc.
  • FIG. 1 shows schematically and-by way of example, an apparatus for the formation of underlayersaccording to the invention
  • FIGS. 2 and 3 are graphs portraying the sound-insulation characteristics of the products in accordance therewith.
  • the long fibers I proceeding from an appropriate production device 2, fall in successive layers onto a wire mesh or perforated conveyor belt 3 which passes over an opentopped casing 4 which is placed under a reduced pressure.
  • the fibers become entangled or interlaced in the parallel planes to form a pad or mat 5.
  • This mat is then brought by a meshed conveyor belt 6 to the sizingstation which comprises a vat 7, wherein is prepared the homogeneous mixture'of the one or more elastomers with their adjuvants, and a distributor 8 from which the mixture flows to impregnate the mat.
  • the mat, impregnated withbinder then passes onto a meshed conveyor belt 9 to be carried to the drying station which comprises a pressing cylinder 10 and a casing 11 which is placed below the latter and under the belt 9, and to which is connected a pump 12.
  • the dried mat is carried by a conveyor belt 13 under a row of drying heaters 14. of infra-red rays, then into a chamber 15 where reticulation of the elastomer or elastomers is effected.
  • the underlayer thus formed is finally made up at I6;
  • underlayers according to the invention Two examples of underlayers according to the invention are given below, the first relating to an underlayer for pliable fioor sheathing, and the second to an underlayer for a rigid floor sheathing.
  • Example 1 Underlayer for Flexible" Floor Sheathing
  • the underlayer is obtained from glass fibers some decimetors in length, and of a'mean diameter. of lo-rnicrons, manufactured by a gaseous drawing-out process.
  • the pad or mat obtained has aweight of approximately 220 grams per square meter, and its thickness is about 18 to 10 mm.
  • the fibers of this mat are linked by means of a binder of the following composition:
  • the underlayer is joined to a floor sheathing constituted by I a plasticized and polyvinyl chloride with fillers.
  • the thickness of this sheathing is about 15 to [0 mm.
  • FIG. 2 illustrates the improvement in insulation against shock noisesv as a function of the sound frequency in cycles per second for the aggregate above placed on a, floor or ceiling of'solid reinforced concrete having a thickness of l4 cm.
  • the differences of sound levels in decibels, represented as ordinates, are expressed by the relation: A L L L in which L equals the sound level which is picked up when the machine producing the shocks is placed upon the bare floor, without sheathing, and L, equals Example ll (Underlayer for Rigid Floor Sheathing)
  • the pad of fiber glass has the same characteristics as that of Example I.
  • the fibers of this pad are bound by means of a binder, the composition of which is the following:
  • Emulsion of carboxylated butadiene styrene latex 7.7%
  • Thermo gelifying thickener 0.3% Water I i 92 .091
  • the percentage by weight of this binder with respect to the totalweight of the underlayer is 40 percent.
  • This underlayer is joined to a floor sheathing constituted by thin wood planks of an area 12.5 cm. X 2.5 cm., and of8 mm. thickness. Adherence of the floor layers on the underlayer is assured by the use of 200 grams per square meter of an aqueous emulsion of polyvinyl acetate. t
  • the curve shown in FIG. 3 illustrates the improvement in insulation against shock noises as a function of the sound frequency in cycles per second for the aggregate above, used in a laminated floor with an underlayer glued to a solid reenforced concrete floor or ceiling, 14 cm. in thickness.
  • the instant invention also seeks to cope with special problems which arise in the course of fabricating the final products of the invention, that is, underlayers associated with rigid-or pliable sheathings, for example, laminated flooring plates, slabs or sheets of vinyl chloride, etc., or applying such underlayers to supports, such as floors or walls.
  • underlayers associated with rigid-or pliable sheathings for example, laminated flooring plates, slabs or sheets of vinyl chloride, etc., or applying such underlayers to supports, such as floors or walls.
  • the adhesive which is' used is of light viscosity
  • the glue migrates in the fibers of the product, which, on the one hand, gives rise to a deterioration of the elastic properties of the product, and on the other hand, for the same quantity of glue being used, results in an impairment or weakening of the .adherence of the fibrous product to the sheathing or to the support.
  • the pores of one or both faces of the fibrous product are partially or totally clogged before the application'thereto of the adhesive for affixing the same to the sheathing or other support.
  • This partial or total clogging of the pores may be realized by depositing on the surface of the fibrous product, in the course of or after its fabrication, a thin layer consisting of a binder, a mineral filler, and mineral or organic material in the form of fibers of small diameter ranging generally between 1 micron and l0 microns.
  • Binders such as: an emulsion of polyvinyl acetate, butadiene styrene, vinyl ethylene acetate, bitumen, etc.; phenolformaldehyde resins; milk of starch, etc.
  • Mineral fillers such as: chalk, silica, diatamaceous earth, perlite, etc.
  • the binders may be applied either by spraying or atomizing, by spreading with a scraper blade, or by means of a depositing roller, but in this case the binders must be characterized by a high viscosity ranging between l,000 to 10,000 centipoises. A drying by hot air serves to complete the setting of the aqueous binders.
  • the fillers may be added to the one or more binders, or they may be added by a suitable mechanical projecting apparatus.
  • the fibers may be applied by a suitable projecting device. This operation may be effected advantageously at the same time as the original fibers of the mat are formed.
  • the quantity of the products which are used depend upon the degree of clogging of the pores which is desired to be obtained.
  • the usual quantities which are used may range between 5 and 100 grams per square meter, and particularly 10 to 30 grams per square meter deposited in one or more successive layers.
  • a treatment of the surface which is particularly effective to obtain good adhesion may be attained with an aqueous solution having the following compositron:
  • Emulsion of carboxylated This solution is deposited by means of a scraper or depositing roller on the surface of the fibrous product in such a way that after drying and ventilated heating by hot air, the quantity of the solid material which is deposited is about 30 grams per square meter.
  • the instant invention is also concerned with another problem which arises when the underlayers, as described above, are combined with sheathings of plastic material, particularly vinyl sheathings which are applied to an aggregate of mineral fibers and thermoplastic materials by a coating procedure.
  • the paste of plastic material such as vinyl resin
  • the fibrous product is applied and then hardened on the fibrous product as it advances continuously.
  • the final appearance of the sheathing depends on the condition of the surface of the fibrous product at the moment of its coating.
  • the fibrous product in accordance with the invention is stocked on drums or rollers, this rolling may cause a partial disarrangement of the initial stratification of the fibers, which becomes evident by the appearance of transverse folds in the surface of the fibrous product. These transverse folds disappear only partially when the fibrous product is unrolled, and these irregular faults in the smoothness of the product are evident as an integral part of the finally coated sheathing, thereby rendering them unacceptable for aesthetic reasons.
  • the inventive improvement consists in bringing the fibrous product, before the coating operation, to a temperature such that the thermoplastic binder of the aggregate is softened, thereby to effect a rearrangement of the fibers along the initial planes of Stratification.
  • the transverse folds which are formed in the course of rolling the product disappear completely and the product acquires its initial smoothness.
  • the heating treatment may be effected on the coating machines immediately before the covering layer is applied, generally by a scraper serving to lay up the vinyl paste onto the fibrous product which is maintained under tension.
  • a tension on the fibrous product ranging between 0.5 kg./cm. and 5 kg./cm. of width; a uniform temperature ranging between l20 C. and 170 C., and preferably 160 C.
  • said glass fibers being mutually interlaced in a plurality of parallel planes
  • a binder for said glass fibers comprising d. at least one elastomer selected from the group consisting of natural and artificial latex, and
  • cent to 50 percent of the total weight of the product which ranges in weight between 150 grams to 300 grams per square meter, and in thickness between approximately 10 mm. to 18 mm.
  • said product including a supplemental filling layer of a compatible composition of mineral fibers, thermoplastic binder and mineral fillers, on.at least one surface thereof, for clogging at least partially the pores of said product adjacent to said surface and thereby blocking the migration of said adhesive to the interior of said product, said mineral fibers being of small diameter ranging from 1 to 10 microns and said mineral filler being selected from the group consisting of chalk, silica, diatomaceous earth and perlite.
  • the binder of artificial latex is an aqueous emulsion selected from the group consisting of polychloroprene, carboxylated butadiene styrene, and acrylonitrile butadiene, and
  • the adjuvant is selected from the group consisting of mercapto-silane and formaldehyde resorcinal resin with acrylic thickener.
  • a product as set forth in claim 1 including a cellulose thickener which reacts with an aqueous emulsion of the elastomer before and during the removal of the water therefrom to effect a blocking up of the elastomer and the formation of a network thereof amongst the glass fibers.
  • the artificial elastomer component is neoprene latex with the adjuvant being a thermo-coagulant ammonium salt selected from the group consisting of ammonium nitrate, ammonium sulfate and ammonium chloride.
  • a product as set forth in claim 1 wherein the binder in said supplemental filling layer is selected from the group consisting of emulsions of polyvinyl acetate, butadiene styrene, vinyl ethylene acetate and bitumen.
  • a product as set forth in claim 1 wherein the filling layer may range in weight from 5 to grams per square meter.
  • a product as set forth in claim 1 wherein the filling layer may range in weight from 10 to 30 grams per square meter.
  • said glass fibers being mutually interlaced in a plurality of parallel planes
  • a binder for said glass fibers comprising at least one elastomer selected from the group consisting of natural and artificial latex,
  • the percentage of the weight of the binder being 20 percent to 50 percent of the total weight of the product, which ranges between 150 grams to 300 grams per square meter,

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Civil Engineering (AREA)
  • Laminated Bodies (AREA)
  • Nonwoven Fabrics (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Paper (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Building Environments (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
US3658633D 1967-08-08 1968-07-25 Aggregates of mineral fibers and thermoplastic materials useful particularly as underlayers for structural sheathings for acoustic insulation Expired - Lifetime US3658633A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR117218A FR1539907A (fr) 1967-08-08 1967-08-08 Complexes de fibres minérales et de matières thermoplastiques utilisables notamment comme sous-couches pour revêtements destinés à assurer une isolation acoustique
FR151670A FR94567E (fr) 1967-08-08 1968-05-14 Complexes de fibres minérales et de matieres thermoplastiques utilisables notamment comme sous-couches pour revetements destinés a assurer une isolation acoustique.
FR151671A FR94568E (fr) 1967-08-08 1968-05-14 Complexes de fibres minérales et de matieres thermoplastiques utilisables notamment comme sous-couches pour revetements destinés a assurer une isolation acoustique.

Publications (1)

Publication Number Publication Date
US3658633A true US3658633A (en) 1972-04-25

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US3658633D Expired - Lifetime US3658633A (en) 1967-08-08 1968-07-25 Aggregates of mineral fibers and thermoplastic materials useful particularly as underlayers for structural sheathings for acoustic insulation

Country Status (12)

Country Link
US (1) US3658633A (da)
JP (1) JPS565663B1 (da)
BE (1) BE719191A (da)
CH (1) CH498059A (da)
DK (1) DK141244B (da)
ES (1) ES356998A1 (da)
FI (1) FI50847C (da)
FR (1) FR94568E (da)
GB (1) GB1219023A (da)
NL (1) NL158861B (da)
NO (1) NO134166C (da)
SE (1) SE343158B (da)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3805466A (en) * 1971-05-03 1974-04-23 Koninklijke Hoogovens En Staal Metallurgical shaft furnace lined by refractory elements and filler spacers
US3822764A (en) * 1971-11-25 1974-07-09 Saint Gobain Structural elements having highly improved soundproofing characteristics
JPS4981719U (da) * 1972-11-06 1974-07-16
US3895143A (en) * 1973-03-16 1975-07-15 Nicolet Ind Inc Metal-fiber-latex-containing sheet materials
US3994363A (en) * 1974-08-02 1976-11-30 Asahi Glasss Co., Ltd. Composite noise absorption product
US4104426A (en) * 1975-11-28 1978-08-01 Mcdonnell Douglas Corporation Production of muffler material
US5324337A (en) * 1992-12-29 1994-06-28 Knauf Fiber Glass Gmbh Method for producing fiber product
US5787677A (en) * 1995-10-18 1998-08-04 Owens Corning Fiberglas Technology, Inc. Garage door insulation system
US5965851A (en) * 1997-01-28 1999-10-12 Owens Corning Fiberglas Technology, Inc. Acoustically insulated apparatus
US20020096278A1 (en) * 2000-05-24 2002-07-25 Armstrong World Industries, Inc. Durable acoustical panel and method of making the same
US20040088938A1 (en) * 2002-11-07 2004-05-13 Saint-Gobain Isover Material made of mineral fibers for absorbing impact noise
US20040099477A1 (en) * 2000-09-18 2004-05-27 Mats Abom Sound absorbent
EP1539483A1 (en) * 2002-09-13 2005-06-15 CTA Acoustics, Inc. Improved sound absorbing material and process for making
WO2006119807A1 (de) * 2005-05-07 2006-11-16 Kronospan Technical Company Ltd. Paneele mit zweilagiger trittschalldämpfung
CN105358753A (zh) * 2013-07-05 2016-02-24 Usg内部有限责任公司 玻璃纤维强化的基于矿棉的吸声砖
US10464846B2 (en) * 2017-08-17 2019-11-05 Usg Interiors, Llc Method for production of acoustical panels

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2329613A1 (fr) * 1975-10-31 1977-05-27 Chem Fab Corp Amortisseur acoustique et procede pour l'absorption du son
US4357436A (en) * 1980-06-02 1982-11-02 Rm Industrial Products Company, Inc. Composite insulating material and process
JPS57157752A (en) * 1981-03-26 1982-09-29 Nissan Motor Every kind of cover for engine and their manufacture
GB2139950B (en) * 1983-04-28 1987-02-04 Honda Motor Co Ltd Composite sound and heat insulating board
JPH069968U (ja) * 1992-01-27 1994-02-08 忠司 酒井 カレンダー用日付標示具
ES2121668B1 (es) * 1995-07-24 1999-06-16 Insonorizantes Termico Acustic Perfeccionamientos en la fabricacion de paneles aislantes termoacusticos.
SI2865799T1 (sl) * 2013-10-25 2018-10-30 Ursa Insulation, S.A. Postopek za proizvodnjo izolacijskih izdelkov iz mineralne volne z nizkimi emisijami formaldehida
CN110790564A (zh) * 2019-11-20 2020-02-14 林培双 一种利用废弃沥青制备隔音砖的方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1503605A (en) * 1920-04-29 1924-08-05 C F Dahlberg Sound-deadening fiber board
US2285423A (en) * 1937-08-10 1942-06-09 Esser Wilhelm Sound absorbing material
US2666699A (en) * 1947-01-06 1954-01-19 Minnesota Mining & Mfg Precipitating size with chromium and aluminum salts
US3121656A (en) * 1961-07-28 1964-02-18 Contours Unltd Moldable composition
US3137589A (en) * 1958-11-05 1964-06-16 Basf Ag Production of bonded fiber fleeces
US3509012A (en) * 1965-11-22 1970-04-28 Owens Corning Fiberglass Corp Composition and compound for treatment of glass fibers to improve elastomeric bonding
US3513065A (en) * 1967-04-19 1970-05-19 Owens Corning Fiberglass Corp Film faced fibrous body

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1503605A (en) * 1920-04-29 1924-08-05 C F Dahlberg Sound-deadening fiber board
US2285423A (en) * 1937-08-10 1942-06-09 Esser Wilhelm Sound absorbing material
US2666699A (en) * 1947-01-06 1954-01-19 Minnesota Mining & Mfg Precipitating size with chromium and aluminum salts
US3137589A (en) * 1958-11-05 1964-06-16 Basf Ag Production of bonded fiber fleeces
US3121656A (en) * 1961-07-28 1964-02-18 Contours Unltd Moldable composition
US3509012A (en) * 1965-11-22 1970-04-28 Owens Corning Fiberglass Corp Composition and compound for treatment of glass fibers to improve elastomeric bonding
US3513065A (en) * 1967-04-19 1970-05-19 Owens Corning Fiberglass Corp Film faced fibrous body

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3805466A (en) * 1971-05-03 1974-04-23 Koninklijke Hoogovens En Staal Metallurgical shaft furnace lined by refractory elements and filler spacers
US3822764A (en) * 1971-11-25 1974-07-09 Saint Gobain Structural elements having highly improved soundproofing characteristics
JPS4981719U (da) * 1972-11-06 1974-07-16
JPS5230022Y2 (da) * 1972-11-06 1977-07-08
US3895143A (en) * 1973-03-16 1975-07-15 Nicolet Ind Inc Metal-fiber-latex-containing sheet materials
US3994363A (en) * 1974-08-02 1976-11-30 Asahi Glasss Co., Ltd. Composite noise absorption product
US4104426A (en) * 1975-11-28 1978-08-01 Mcdonnell Douglas Corporation Production of muffler material
US5324337A (en) * 1992-12-29 1994-06-28 Knauf Fiber Glass Gmbh Method for producing fiber product
US5787677A (en) * 1995-10-18 1998-08-04 Owens Corning Fiberglas Technology, Inc. Garage door insulation system
US5965851A (en) * 1997-01-28 1999-10-12 Owens Corning Fiberglas Technology, Inc. Acoustically insulated apparatus
US20020096278A1 (en) * 2000-05-24 2002-07-25 Armstrong World Industries, Inc. Durable acoustical panel and method of making the same
US20030041987A1 (en) * 2000-05-24 2003-03-06 Armstrong World Industries, Inc. Durable acoustical panel and method of making the same
US6616804B2 (en) * 2000-05-24 2003-09-09 Awi Licensing Company Durable acoustical panel and method of making the same
US20040099477A1 (en) * 2000-09-18 2004-05-27 Mats Abom Sound absorbent
EP1539483A1 (en) * 2002-09-13 2005-06-15 CTA Acoustics, Inc. Improved sound absorbing material and process for making
EP1539483A4 (en) * 2002-09-13 2008-07-30 Cta Acoustics Inc IMPROVED PHONIC ISOLATION MATERIAL AND METHOD OF MANUFACTURING THE SAME
US20040088938A1 (en) * 2002-11-07 2004-05-13 Saint-Gobain Isover Material made of mineral fibers for absorbing impact noise
WO2006119807A1 (de) * 2005-05-07 2006-11-16 Kronospan Technical Company Ltd. Paneele mit zweilagiger trittschalldämpfung
US20100051380A1 (en) * 2005-05-07 2010-03-04 Kronospan Technology Company Limited Impact sound insulation two-layer panel
US9441380B2 (en) * 2005-05-07 2016-09-13 Kronoplus Technical Ag Impact sound insulation two-layer panel
CN105358753A (zh) * 2013-07-05 2016-02-24 Usg内部有限责任公司 玻璃纤维强化的基于矿棉的吸声砖
CN105358753B (zh) * 2013-07-05 2018-02-09 Usg内部有限责任公司 用于吸声天花板砖的湿铺底垫
US10464846B2 (en) * 2017-08-17 2019-11-05 Usg Interiors, Llc Method for production of acoustical panels

Also Published As

Publication number Publication date
FR94568E (fr) 1969-09-12
DE1784432A1 (de) 1972-03-16
SE343158B (da) 1972-02-28
NL6811269A (da) 1969-02-11
CH498059A (fr) 1970-10-31
NO134166C (da) 1976-08-25
GB1219023A (en) 1971-01-13
DE1784432B2 (de) 1975-10-02
DK141244C (da) 1980-08-11
JPS565663B1 (da) 1981-02-06
DK141244B (da) 1980-02-11
FI50847B (da) 1976-04-30
ES356998A1 (es) 1970-04-01
BE719191A (da) 1969-02-07
NO134166B (da) 1976-05-18
FI50847C (fi) 1976-08-10
NL158861B (nl) 1978-12-15

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