WO2002098643A2 - Multidensity liner/insulator - Google Patents
Multidensity liner/insulator Download PDFInfo
- Publication number
- WO2002098643A2 WO2002098643A2 PCT/US2002/016418 US0216418W WO02098643A2 WO 2002098643 A2 WO2002098643 A2 WO 2002098643A2 US 0216418 W US0216418 W US 0216418W WO 02098643 A2 WO02098643 A2 WO 02098643A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- liner
- pad
- face
- skin
- insulator
- Prior art date
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Classifications
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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
- D04H1/54—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 welding together the fibres, e.g. by partially melting or dissolving
- D04H1/541—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres
- D04H1/5418—Mixed fibres, e.g. at least two chemically different fibres or fibre blends
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
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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
- B32B5/02—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 structural features of a fibrous or filamentary layer
- B32B5/08—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 structural features of a fibrous or filamentary layer the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/20—Making multilayered or multicoloured articles
- B29C43/203—Making multilayered articles
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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
- B32B5/18—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 features of a layer of foamed material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/08—Insulating elements, e.g. for sound insulation
- B60R13/0815—Acoustic or thermal insulation of passenger compartments
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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
-
- 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
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
- D04H1/43825—Composite 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
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
- D04H1/43835—Mixed fibres, e.g. at least two chemically different fibres or fibre blends
-
- 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
- D04H1/54—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 welding together the fibres, e.g. by partially melting or dissolving
- D04H1/558—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 welding together the fibres, e.g. by partially melting or dissolving in combination with mechanical or physical treatments other than embossing
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4209—Insulation arrangements, e.g. for sound damping or heat insulation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/52—Heating or cooling
- B29C2043/522—Heating or cooling selectively heating a part of the mould to achieve partial heating, differential heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3005—Body finishings
- B29L2031/3041—Trim panels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/08—Insulating elements, e.g. for sound insulation
- B60R13/0892—Insulating elements, e.g. for sound insulation for humidity insulation
Definitions
- the present invention relates generally to a multilayer acoustical and thermal liner/insulator which may be utilized to insulate an environment such as a passenger ' compartment of a vehicle from the heat and sound generated by mechanical components of that vehicle during its operation. Further uses include application in insulating appliances such as dishwashers and clothes dryers and providing sound and thermal insulation for furnaces, air conditioning units and ductwork in buildings including homes, offices and industrial structures.
- Acoustical insulation is well known in the art. Acoustical insulation typically relies upon both sound absorption, that is, the ability to absorb incident sound waves, and transmission loss, that is, the ability to reflect incident sound waves, in order to provide sound attenuation.
- Sound absorption that is, the ability to absorb incident sound waves
- transmission loss that is, the ability to reflect incident sound waves
- One of the more prevalent uses of such insulation is in the motorized vehicle field where engine compartments, fire walls, fender wells, doors, floor pans and other components of the passenger compartment shell are commonly acoustically insulated to reduce engine and road noise for the benefit and comfort of passengers.
- Mats of high temperature glass fibers have also been utilized, for example, (a) on the fire wall between the dashboard and engine compartment and (b) along the floor pan of the vehicle between the passenger compartment and the drive line and exhaust system. These materials provide heat insulation which makes it possible to maintain cooler and more comfortable temperatures in the operator/passenger compartment particularly during the summer months. Additionally, these materials provide needed sound insulation, reducing or eliminating various mechanical sounds of the motor, drive train as well as the suspension and tires as the vehicle travels over the often rough and bumpy surface of the roadway.
- the non- woven fabric fiber layers are loaded into a molding tool and exposed to molding pressure for a dwell time sufficient to complete the molding process.
- the part is then cooled below the softening temperature of the fibers to set the composite in the final molded shape.
- acoustical insulation commonly employed for vehicle applications are found in U.S. Patents 5,298,694 to Thompson et al., 5,624,726 to Sanocki et al, 5,759,659 to Sanocki et al. and 5,961,904 to Swan et al.
- the Thompson et al. patent discloses a non-woven acoustical insulation web of thermoplastic fibers and a second layer, such as a scrim, non-woven fabric, film or foil, laminated thereto for water barrier protection.
- the Sanochi et al. patents disclose an acoustical insulation blanket in the form of a composite featuring an insulation layer of fibrous insulation, foam insulation or a combination thereof and a high temperature-resistant layer of ceramic paper, woven ceramic fibers, woven fiberglass fibers, ceramic non-woven scrims or fiberglass non- woven scrims encased in a heat sealable thermoplastic polyolefin which functions as a moisture barrier.
- the Swan et al patent discloses a non-woven acoustical insulation web of thermally stabilizing melt-blown polypropylene microfibers which may also contain staple fibers such as crimped bulking fibers and/or binder fibers.
- the acoustical insulation web is formed as a laminate with a water barrier layer of planer thermoplastic polyolefin film such as polyethylene, polypropylene and efhylene-propylene coporymer films.
- a water barrier layer of planer thermoplastic polyolefin film such as polyethylene, polypropylene and efhylene-propylene coporymer films.
- manufacturers have utilized one or more layers of ethylene vinyl acetate and/or polyvinyl chloride to provide the desired moisture barrier.
- the added water barrier layer(s) often add significant weight to the insulation product. This is a very significant disadvantage to vehicle manufacturers seeking to reduce overall vehicle weight and increase fuel economy.
- water barrier protection is a critical concern.
- the liner/insulator includes a pad of fibrous material having a lofty, acoustically insulating portion having a density of between substantially 8.0 - 80.0 kg/m .
- the liner/insulator also includes a relatively higher density skin along at least one face thereof.
- the skin has a thickness of between substantially 0.25-10.0 mm and a density of between substantially 32.0 - 1600.0 kg/m 3 .
- the fibrous material of the liner/insulator is selected from a group consisting of (a) thermoplastic polymer staple fibers and thermoplastic bicomponent fibers,(b) glass staple fibers and thermoplastic bicomponent fibers and (c) a combination of (a) and (b).
- the fibrous material may be polyester, polyethylene, polypropylene, polyethylene terephthalate, glass fibers, natural fibers and any mixtures thereof.
- the pad is a nonlaminate and, accordingly, the potential for the relatively higher density skin to delaminate from the remainder of the pad is eliminated.
- the pad includes a higher density skin along a second face thereof as well.
- the liner/insulator includes a first facing layer along a first face thereof. In still another embodiment, the liner/insulator includes a second facing along a second face thereof.
- the first and second facings may be constructed from polyester, rayon, metallic foil and any mixtures thereof.
- an acoustical liner with integral water barrier comprises a pad of fibrous material having a lofty, acoustically insulating portion having a density of between substantially 8.0 - 80.0 kg/m 3 and a relatively higher density, water-barrier skin along at least one face thereof.
- the skin has a thickness of between substantially 0.254 - 7.5 mm and a density between approximately 32.0 - 1600.0 kg/m 3 .
- the pad is formed from fibrous materials selected from a group consisting of polyester, polyethylene, polypropylene, polyethylene terephthalate, glass fibers, natural fibers and any mixtures thereof.
- the pad and heat- seared, water-barrier skin are integral and, accordingly, the acoustical liner is a non- laminate. As such, it avoids any tendency to delaminate as is characteristic of the water barrier layers laminated to acoustical insulation materials commonly employed in the prior art.
- the acoustical liner with integral water barrier may further include a crimped margin around at least a portion of the periphery of the pad where the crimped margin has a thickness of at least about 0.5 - 3.0 mm.
- This margin provides additional strength and a suitable location to mount the liner to, for example, a door panel or other structural component of a vehicle requiring acoustical insulation by means of mechanical fasteners of a nature known in the art.
- the pad of the acoustical liner with integral water barrier may also include two heat-seared skins.
- the pad may include one or more facing layers composed of polyester, rayon, metallic foil and any mixtures thereof.
- a method of insulating a door including an exterior body panel and an interior fascia panel defining a cavity therebetween comprises the placing of a pad of fibrous material in the cavity between the exterior body panel and the interior fascia panel.
- the pad has a lofty, acoustically insulating portion having a density of substantially 8.0 - 80.0 kg/m 3 and a relatively higher density skin along at least one face thereof having a density of between substantially 0.25 - 7.5 mm.
- a door for a vehicle includes an exterior body panel, an interior fascia panel connected to the exterior body panel and defining a cavity therebetween and a pad of fibrous material having a lofty, acoustically insulating portion having a density of substantially 8.0 - 80.0 kg/m 3 and a relatively higher density, water-barrier skin along at least one face thereof.
- That skin has a thickness of between substantially 0.25 - 7.5 mm.
- That pad is formed from fibrous materials selected from a group consisting of polyester, polyethylene, polypropylene, polyethylene terephthalate, glass fibers, natural fibers and any mixtures thereof.
- the pad is a nonlaminate and may also include a crimped margin around at least a portion of the periphery of the pad where the crimped margin has a thickness of at least about 0.5 - 3.0 mm.
- this crimped margin provides a convenient fastening point for securing the acoustical liner to the exterior and/or interior panels of the door or other component to which the acoustical liner is to be secured.
- the pad of the acoustical liner may also include two heat-seared skins.
- a liner for an airstream conduit such as a heating and air conditioning duct, or a housing such as for a furnace or air conditioning unit
- That liner comprises a pad of fibrous material having a lofty, acoustically insulating portion having a density of between about 8.0 - 80.0 kg/m .
- That liner also includes a relatively higher density skin along at least one face thereof.
- the skin has a thickness of between about 0.25-10.00 mm and a density of between about 32.0 - 1600.0 kg/m .
- the liner may be formed from polyester, polyethylene, polypropylene, polyethylene terephthalate, glass fibers, natural fibers and any mixtures thereof.
- the liner may also include a second skin and, if desired for any particular application, one or more facings.
- the facings may be constructed from polyester, rayon, metallic foil and any mixtures thereof.
- Figure 1 is an end elevational view of a liner/insulator of the present invention including a relatively higher density skin along one face;
- Figure 2 is an end elevational view of another embodiment of the invention including two relatively higher density skins along two opposing faces thereof;
- Figure 3 is an end elevational view of yet another embodiment of the present invention including one relatively higher density skin along one face and a facing along the opposite face thereof;
- Figure 4 is an end elevational view illustrating still another embodiment of the invention with a facing covering a relatively higher density skin along one face and a second facing covering the opposite face;
- Figure 5 is a perspective view of an acoustical liner with an integral water barrier
- Figure 6 is a detailed cross sectional view of the acoustical liner shown in Figure 5;
- Figure 7 is a detailed cross-sectional view of an alternative embodiment showing an acoustical liner with two, opposed relatively higher density skins; and
- Figure 8 is an exploded perspective view of a vehicle door constructed in accordance with the teachings of the present invention.
- the liner/insulator 10 includes a pad 12 of fibrous material.
- the fibrous material may take the form of (a) thermoplastic polymer staple fibers and thermoplastic bicomponent fibers, (b) glass staple fibers and thermoplastic bicomponent fibers and (c) a combination of (a) and (b).
- the thermoplastic staple fibers and bicomponent fibers may be selected from a group of materials including but not limited to polyester, polyethylene, polypropylene, polyethylene terephthalate and any mixtures thereof.
- the glass fibers may include E-glass, S-glass or basalt fibers.
- Natural fibers for example, hemp, kenaf
- the pad 12 includes a lofty, acoustically insulating portion 14 having a density of between substantially 8.0 - 80.0 kg/m 3 and a relatively higher density skin 16 along one face thereof.
- the skin 16 has a thickness of between substantially 0.25 - 10.0 mm and a density of between substantially 32.0 - 1600.0 kg/m 3 .
- the density of the skin 16 may be substantially constant throughout its thickness or it may vary gradually lower from a maximum density along the outer face thereof to a density just above that of the insulating portion 14 along the inner portion thereof. Where the density of the skin 16 varies, the average density for the skin falls within the indicated range.
- the pad 12 including both the relatively lower density insulating portion 14 and the relatively higher density skin 16 is formed from a single, unitary sheet of fibrous starting material.
- the pad 12 is a nonlaminate and, accordingly, there is no tendency for the skin 16 to delaminate from the insulating portion 14 under any environmental conditions to which the liner/insulator is likely to be subjected.
- the skin 16 provides the pad 12 with added mechanical strength and rigidity which aids in handling the liner/insulator 10 during installation on an apparatus or component, such as a vehicle body component, furnace or air conditioning unit housing or ductwork being insulated.
- the skin 16 functions to maintain the integrity and acoustical and thermal insulating performance of the liner/insulator 10 over a long service life. More specifically, the skin 16 provides extra mechanical support. Further, the increased density of the skin 16 closes the pores of the material making it impervious to many potential environmental contaminants which might otherwise degrade the performance of the liner/insulator over time. Thus, it should be appreciated that the skin 16 effectively functions to protect the insulating portion 14 in much the same manner as a laminated facing material does in prior art liner/insulator designs. Such prior art facing layers inherently have the potential to delaminate and fail. This is a significant drawback when one considers the harsh operating environments to which such liners and insulators are often exposed.
- the present invention eliminates this risk of delamination which potentially could otherwise lead to liner/insulator failure.
- another embodiment of the liner/insulator 10 includes the pad 12 with the lofty, acoustically insulating portion 14 and the skin 16 as described above for the Figure 1 embodiment.
- the Figure 2 embodiment includes a second skin 18 along the opposing face of the pad 12.
- the second skin 18 may have the same physical attributes described above for the first skin 16.
- the two skins 16, 18 may, however, vary from each other in thickness and or density within the indicated ranges.
- an additional embodiment of the liner/insulator 10 includes the pad 12 with the lofty, acoustically insulating portion 14 and the skin 16 as described above with respect to the Figure 1 embodiment.
- the face 20 of the pad opposite the skin 16 carries a facing layer 22.
- the facing layer 22 may be made from polyester, rayon, metallic foil and any mixtures thereof. Such a facing layer 22 may be employed for an aesthetic, decorative purpose or for a utilitarian purpose such as heat reflection and dissipation.
- the liner/insulator 10 of Figure 4 includes a pad 12, a lofty, insulating portion 14 and a skin 16 just as described above with respect to the Figure 1 embodiment.
- the liner/insulator 10 includes a first facing layer 24 covering the skin 16 and a second facing layer 26 covering the opposite face 28 of the pad 12.
- the two facing layers may be made from polyester, rayon, metallic foil and any mixtures thereof.
- a multilayer facing material may also be used.
- the facing layer 22, 24 and/or 26 may be formed from a heat reflective material such as a metallic foil (for example, aluminum or other heat reflective metal).
- a metallic foil for example, aluminum or other heat reflective metal
- foil thickness is generally in the range of 0.25 - 7.5 mm. The thickness selected is based upon the temperature, durability and structural requirements of the particular product application.
- the facing layer 22, 24 and/or 26 may be reinforced or non-reinforced. Reinforcements are included to add durability and structural integrity. Reinforcements may take the form of fibrous scrims, fibrous mats or fibrous webs. For many applications, the reinforcement is made from a relatively strong fiber such as fiberglass. Typically, glass fiber threads are arranged in a criss-cross pattern. The number of threads per inch can be adjusted to provide the desired product properties.
- the fiber reinforcement strands are regularly spaced across the web and cross-web directions of the foil. Typically, spacing patterns include but are not limited to 4X4 (four strands per inch in both directions), 3X3, 2X2, 4X2 and 3X2. Typical patterns are rectangular and diamond.
- the strands may be materials other than glass which provide the desired properties (for example, polyester).
- Alternative reinforcement materials for the facing layer 22, 24 and/or 26 include but are not limited to glass mats, polymer mats and blended mats.
- the reinforcement may be preattached to the metallic foil.
- loose laid reinforcement may be utilized.
- the foil layer reinforcement provides improved tear resistance, strength and/or acoustical insulating properties.
- no reinforcement is necessary.
- the facing layer 22, 24 and/or 26 (reinforced or non-reinforced) is attached to the polymer based pad 12 by means of a heat activated adhesive.
- the adhesive utilized may be a thermoplastic sheet or thermoplastic web material that tends to melt and flow at temperatures between 200° F-350 0 F.
- Adhesives of this type are desirable because they can be activated during the molding phase of production. Besides thermoplastic sheets and webs, adhesives such as hot melts, latex and various heat activated resins may be utilized.
- the adhesive may be a separate layer as illustrated or the adhesive may already be attached to the facing layer 22, 24 and/or 26 in a dot matrix (that is, uniform) or sintered (that is, random) pattern.
- An acoustical liner 10 with integral water barrier, such as shown in Figure 5, is just one possible product of the present invention.
- the acoustical liner 10 includes a pad 12 of fibrous material.
- the pad 12 is constructed from material characterized by the ability to absorb incident sound waves and the ability to reflect incident sound waves so that the material provides excellent sound attenuation. Accordingly, the pad 12 may be constructed from a group of materials including polyester, polyethylene, polypropylene, polyethylene terephthalate, glass fibers, natural fibers and any mixtures thereof.
- the pad 12 includes a lofty, acoustically insulating portion 14 having a density of between about 8.0 - 80.0 kg/m 3 and a heat-seared skin 16 of increased density that resists water permeation and functions as a water barrier.
- the face 16 has a thickness of between substantially 0.25 - 7.5 mm and preferably has a density on the order of approximately 32.0 - 1600.0 kg/m 3 .
- the insulating portion 14 and skin 16 are integrally formed during the manufacturing process and as such the liner 10 is a nonlaminate. Since the liner 10 does not comprise layers held together by adhesive it does not suffer from any tendency to delaminate and, therefore, it provides reliable and dependable water-barrier protection and acoustically insulating properties over a long service life.
- a crimped margin 30 is provided around at least a portion of the outer periphery of the pad 12.
- the crimped margin 30 may have a thickness of about 0.5 - 3.0 mm.
- the material in the crimped margin 30 is compressed so as to be characterized by a relatively higher density. Accordingly, the crimped margin 30 is stronger and, therefore, better suited to hold mechanical fasteners (not shown) such as screws and plastic snap rivets of a type well known in the art utilized to secure insulation sheeting to vehicle panels or the like.
- the liner 10 may also include various cutout openings 32, 34 in the body thereof to accommodate door operating structures such as door latch handle and window operating mechanisms.
- a crimped margin 36 similar to the crimped margin 30 may be provided around one or more of these openings and has been illustrated in the drawing Figure 5 around the opening 34.
- a second, heat- seared skin 18 is provided opposite the first, heat-seared skin 16. While not explicitly shown, it should be appreciated that the edges of the liner 10 may also be heat-seared in order to enhance water-barrier protection in applications where water-barrier protection is of critical importance.
- the construction of a door 38 of a vehicle is shown in Figure 8.
- the door 38 generally comprises an exterior body panel 40 including a window opening 42 and an interior fascia panel 44.
- a cavity 46 is defined between the two panels 40, 44 when they are secured together.
- a liner 10 of the type described above and shown in detail in Figures 5, 6 or 7 including a pad 12 having a lofty, acoustically insulating portion 14 and at least one heat-seared, water-barrier skin 16 is placed in the cavity 46. More specifically, the liner 10 may be secured by mechanical fasteners or other means of a type known in the art to either the exterior panel 40 or the interior panel 46 of the door 38.
- the liner/insulator 10 may be prepared by differential heating and uniform compression.
- the liner 10 shown in Figure 6 is prepared by heating one side of the blanket or pad 12 of insulation material, that is, the side to include the heat-seared, water-barrier skin 16, while the other side remains relatively cool.
- a pressure is then applied for sufficient time to allow the polymer binding fiber to soften near the hot surface but not near the cold surface. When this occurs under compression, the hot side is reshaped into a higher density layer or skin.
- the cool side of the polymer binding fiber does not soften and, therefore, when the pressure is removed, it retains most of its original thickness and density characteristics.
- This technique may be performed in a standard molding press where one platen runs hot and the other runs cool.
- two polymer binding fibers having significantly different softening points are utilized.
- two separate blanket layers are produced each utilizing a different softening point polymer fiber.
- the two layers are brought together in a molding operation utilizing differential heating and compressed to a given gap width for a given length of time and at a given temperature differential.
- the blanket layer with the lower softening point polymer binding fiber is placed next to the hot platen and the higher softening blanket layer is placed next to the cool platen.
- a higher density layer or skin 16 is formed from the lower softening point blanket layer while the higher temperature layer is unaffected and retains its original density.
- the layers are otherwise fused so as to have an integral construction.
- the blanket layer with the higher melting point polymer fiber is preformed and then that layer is fed back through the forming oven during formation of the lower melting point blanket. Since the oven is running at a temperature cooler than that required to activate the higher softening polymer binding fiber, it undergoes compression in the oven but retains its original thickness and density upon exiting the oven. The lower softening point material also undergoes compression and since the oven is at a temperature sufficient to activate its polymer binding fiber, it is squeezed down to a high density layer, and the two layers are fused together as one. Additional information respecting the manufacturing of the liners/insulators 10 of the present invention may be gleaned from a review of copending U. S. Patent application serial no. 09/607,478 filed June 30, 2000, the full disclosure of which is incorporated herein by reference.
- the liner/insulator 10 could include two skins, both covered by a facing layer.
- the liner/insulator 10 could include only one skin covered by a facing layer.
- the liner/insulator 10 may include a skin along one or more of its edges.
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2003-7015671A KR20040007629A (en) | 2001-06-01 | 2002-05-28 | Multidensity liner/insulator |
EP02737137A EP1421232A2 (en) | 2001-06-01 | 2002-05-28 | Multidensity liner/insulator |
CA2444639A CA2444639C (en) | 2001-06-01 | 2002-05-28 | Multidensity liner/insulator |
JP2003501663A JP4129427B2 (en) | 2001-06-01 | 2002-05-28 | Multi-density insulator type liner |
BR0209571-8A BR0209571A (en) | 2001-06-01 | 2002-05-28 | Multiple Density Coating / Insulation |
MXPA03010933A MXPA03010933A (en) | 2001-06-01 | 2002-05-28 | Multidensity liner/insulator. |
AU2002310090A AU2002310090A1 (en) | 2001-06-01 | 2002-05-28 | Multidensity liner/insulator |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US29543301P | 2001-06-01 | 2001-06-01 | |
US60/295,433 | 2001-06-01 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2002098643A2 true WO2002098643A2 (en) | 2002-12-12 |
WO2002098643A3 WO2002098643A3 (en) | 2004-03-04 |
Family
ID=23137708
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2002/016418 WO2002098643A2 (en) | 2001-06-01 | 2002-05-28 | Multidensity liner/insulator |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP1421232A2 (en) |
JP (1) | JP4129427B2 (en) |
KR (1) | KR20040007629A (en) |
AU (1) | AU2002310090A1 (en) |
BR (1) | BR0209571A (en) |
CA (1) | CA2444639C (en) |
MX (1) | MXPA03010933A (en) |
WO (1) | WO2002098643A2 (en) |
Cited By (14)
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WO2005080659A1 (en) * | 2004-02-19 | 2005-09-01 | Saint-Gobain Isover | Inorganic fiber insulation |
WO2005097873A2 (en) * | 2004-04-12 | 2005-10-20 | Saint-Gobain Isover | Sub-layer material for laminate flooring |
WO2006071464A1 (en) | 2004-12-28 | 2006-07-06 | Owens-Corning Fiberglas Technology Ii, Llc. | Polymer/wucs mat for use in automotive applications |
EP1798722A1 (en) * | 2005-12-13 | 2007-06-20 | Takehiro Co., Ltd. | Ultra-light sound insulator |
DE102007011665A1 (en) * | 2007-03-09 | 2008-09-11 | Btf Produktentwicklungs- Und Vertriebs-Gmbh | Sound-deadening fleece used under cast floors, as intermediate layer or underlay, is highly-consolidated and has specified weight and sound attenuation properties |
ITVI20090019A1 (en) * | 2009-02-04 | 2010-08-05 | Art 3 D S N C | PREFABRICATED INSULATING PANEL AND CONSTRUCTION METHOD |
EP2297412A1 (en) * | 2008-05-23 | 2011-03-23 | Eman8 Pty Ltd | Sound absorption material and method of manufacturing sound absorption material |
DE102014217819A1 (en) * | 2014-09-05 | 2016-03-10 | BSH Hausgeräte GmbH | Water-conducting household appliance, in particular household dishwasher |
US10113322B2 (en) | 2014-12-08 | 2018-10-30 | Zephyros, Inc. | Vertically lapped fibrous flooring |
US10460715B2 (en) | 2015-01-12 | 2019-10-29 | Zephyros, Inc. | Acoustic floor underlay system |
US10755686B2 (en) | 2015-01-20 | 2020-08-25 | Zephyros, Inc. | Aluminized faced nonwoven materials |
FR3104504A1 (en) * | 2019-12-16 | 2021-06-18 | Treves Products, Services & Innovation | Acoustic protection screen |
WO2021198217A1 (en) * | 2020-04-02 | 2021-10-07 | Zf Friedrichshafen Ag | Protection arrangement for at least one electric drivetrain component for a vehicle |
US11541626B2 (en) | 2015-05-20 | 2023-01-03 | Zephyros, Inc. | Multi-impedance composite |
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JP4187541B2 (en) * | 2003-02-03 | 2008-11-26 | 帝人ファイバー株式会社 | Multi-layer sound absorbing structure |
JP5360790B2 (en) * | 2007-09-21 | 2013-12-04 | 株式会社クラベ | Heater unit and manufacturing method thereof |
US8056953B2 (en) * | 2008-06-13 | 2011-11-15 | Itt Manufacturing Enterprises, Inc. | Thermal barrier system |
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JP5400820B2 (en) * | 2011-02-28 | 2014-01-29 | 本田技研工業株式会社 | Vehicle interior structure |
JP6175789B2 (en) * | 2013-02-14 | 2017-08-09 | セイコーエプソン株式会社 | Sound absorber, electronic device |
JP6594644B2 (en) * | 2015-04-03 | 2019-10-23 | 旭ファイバーグラス株式会社 | Glass fiber insulation sound absorber and method of using the same |
JP2020075367A (en) * | 2018-11-05 | 2020-05-21 | 旭ファイバーグラス株式会社 | Glass fiber structure |
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- 2002-05-28 AU AU2002310090A patent/AU2002310090A1/en not_active Abandoned
- 2002-05-28 EP EP02737137A patent/EP1421232A2/en not_active Withdrawn
- 2002-05-28 WO PCT/US2002/016418 patent/WO2002098643A2/en active Application Filing
- 2002-05-28 MX MXPA03010933A patent/MXPA03010933A/en active IP Right Grant
- 2002-05-28 BR BR0209571-8A patent/BR0209571A/en not_active Application Discontinuation
- 2002-05-28 KR KR10-2003-7015671A patent/KR20040007629A/en not_active Application Discontinuation
- 2002-05-28 JP JP2003501663A patent/JP4129427B2/en not_active Expired - Fee Related
- 2002-05-28 CA CA2444639A patent/CA2444639C/en not_active Expired - Fee Related
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Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2005080659A1 (en) * | 2004-02-19 | 2005-09-01 | Saint-Gobain Isover | Inorganic fiber insulation |
WO2005097873A2 (en) * | 2004-04-12 | 2005-10-20 | Saint-Gobain Isover | Sub-layer material for laminate flooring |
WO2005097873A3 (en) * | 2004-04-12 | 2008-12-18 | Saint Gobain Isover | Sub-layer material for laminate flooring |
WO2006071464A1 (en) | 2004-12-28 | 2006-07-06 | Owens-Corning Fiberglas Technology Ii, Llc. | Polymer/wucs mat for use in automotive applications |
US7279059B2 (en) | 2004-12-28 | 2007-10-09 | Owens Corning Intellectual Capital, Llc | Polymer/WUCS mat for use in automotive applications |
US8194879B2 (en) | 2005-12-13 | 2012-06-05 | Takehiro Co., Ltd. | Ultra-light sound insulator |
EP1798722A1 (en) * | 2005-12-13 | 2007-06-20 | Takehiro Co., Ltd. | Ultra-light sound insulator |
DE102007011665A1 (en) * | 2007-03-09 | 2008-09-11 | Btf Produktentwicklungs- Und Vertriebs-Gmbh | Sound-deadening fleece used under cast floors, as intermediate layer or underlay, is highly-consolidated and has specified weight and sound attenuation properties |
EP2297412A1 (en) * | 2008-05-23 | 2011-03-23 | Eman8 Pty Ltd | Sound absorption material and method of manufacturing sound absorption material |
EP2297412A4 (en) * | 2008-05-23 | 2011-08-31 | Eman8 Pty Ltd | Sound absorption material and method of manufacturing sound absorption material |
US8365862B2 (en) | 2008-05-23 | 2013-02-05 | Zephyros, Inc. | Sound absorption material and method of manufacturing sound absorption material |
ITVI20090019A1 (en) * | 2009-02-04 | 2010-08-05 | Art 3 D S N C | PREFABRICATED INSULATING PANEL AND CONSTRUCTION METHOD |
DE102014217819A1 (en) * | 2014-09-05 | 2016-03-10 | BSH Hausgeräte GmbH | Water-conducting household appliance, in particular household dishwasher |
DE102014217819B4 (en) * | 2014-09-05 | 2016-05-25 | BSH Hausgeräte GmbH | Water-conducting household appliance, in particular household dishwasher |
US10113322B2 (en) | 2014-12-08 | 2018-10-30 | Zephyros, Inc. | Vertically lapped fibrous flooring |
US11542714B2 (en) | 2014-12-08 | 2023-01-03 | Zephyros, Inc. | Vertically lapped fibrous flooring |
US10460715B2 (en) | 2015-01-12 | 2019-10-29 | Zephyros, Inc. | Acoustic floor underlay system |
US10755686B2 (en) | 2015-01-20 | 2020-08-25 | Zephyros, Inc. | Aluminized faced nonwoven materials |
US11541626B2 (en) | 2015-05-20 | 2023-01-03 | Zephyros, Inc. | Multi-impedance composite |
FR3104504A1 (en) * | 2019-12-16 | 2021-06-18 | Treves Products, Services & Innovation | Acoustic protection screen |
WO2021122523A1 (en) * | 2019-12-16 | 2021-06-24 | Treves Products, Services & Innovation | Acoustic shield |
WO2021198217A1 (en) * | 2020-04-02 | 2021-10-07 | Zf Friedrichshafen Ag | Protection arrangement for at least one electric drivetrain component for a vehicle |
Also Published As
Publication number | Publication date |
---|---|
WO2002098643A3 (en) | 2004-03-04 |
AU2002310090A1 (en) | 2002-12-16 |
MXPA03010933A (en) | 2004-02-27 |
JP4129427B2 (en) | 2008-08-06 |
KR20040007629A (en) | 2004-01-24 |
JP2004537064A (en) | 2004-12-09 |
BR0209571A (en) | 2004-03-30 |
CA2444639A1 (en) | 2002-12-12 |
CA2444639C (en) | 2011-03-29 |
EP1421232A2 (en) | 2004-05-26 |
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