GB1481355A - Laminated noise reduction systems - Google Patents

Laminated noise reduction systems

Info

Publication number
GB1481355A
GB1481355A GB13548/74A GB1354874A GB1481355A GB 1481355 A GB1481355 A GB 1481355A GB 13548/74 A GB13548/74 A GB 13548/74A GB 1354874 A GB1354874 A GB 1354874A GB 1481355 A GB1481355 A GB 1481355A
Authority
GB
United Kingdom
Prior art keywords
substrate
interlayer
foam
adhered
foam material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB13548/74A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dunlop Ltd
Original Assignee
Dunlop Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dunlop Ltd filed Critical Dunlop Ltd
Priority to GB13548/74A priority Critical patent/GB1481355A/en
Priority to ZA00751731A priority patent/ZA751731B/en
Priority to AU79334/75A priority patent/AU487822B2/en
Priority to CA222,879A priority patent/CA1034860A/en
Publication of GB1481355A publication Critical patent/GB1481355A/en
Priority to MY1978215A priority patent/MY7800215A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/02—Energy absorbers; Noise absorbers
    • F16L55/033—Noise absorbers
    • F16L55/0336—Noise absorbers by means of sound-absorbing materials
    • 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
    • G10K11/168—Plural layers of different materials, e.g. sandwiches
    • 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
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0207—Materials belonging to B32B25/00
    • 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
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/0278—Polyurethane
    • 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
    • B32B2266/00—Composition of foam
    • B32B2266/04—Inorganic
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/56—Damping, energy absorption

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Laminated Bodies (AREA)

Abstract

1481355 Sound insulation DUNLOP Ltd 13 March 1975 [27 March 1974 8 Oct 1974] 13548/74 and 43479/74 Heading F2X [Also in Division B5] A composite noise reduction system for the absorption of frequencies of 200 Hz or less comprises (a) a vibration prone substrate; (b) an interlayer made from a foam material having a thickness of from 2 to 20 mm. and being adhered to the substrate over substantially the whole of that surface of the foam material adjacent to the substrate, and (c) a solid counter layer having a mass in the range of 4 to 15 kg./m.<SP>2</SP> and being adhered to the interlayer over substantially the whole of that surface of the foam material remote from that adhered to the substrate, in which the bulk stiffness (defined as being the Young's modulus at 4% compression) of the interlayer has a value in the range 0À5 to 3À5 kn./m.<SP>2</SP>. The specified substrate is a steel bar. The foam interlayer may be organic, e.g. styrenebutadiene latex foam or polyurethane foam or inorganic, e.g. of glass, silica, alumina, zirconia, silicous slag or asbestos. The counterlayer may be a sheet material, e.g. lead or rolled asbestos fabric; alternatively, a polychloroprene rubber, an uncured ethylene-propylene terpolymer, rubber or a plasticised polyvinyl chloride loaded with a filler, e.g. barytes, clay or molybdenum powder may be used. Bonding may be effected by an adhesive, e.g. protein glue.
GB13548/74A 1974-03-27 1974-03-27 Laminated noise reduction systems Expired GB1481355A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB13548/74A GB1481355A (en) 1974-03-27 1974-03-27 Laminated noise reduction systems
ZA00751731A ZA751731B (en) 1974-03-27 1975-03-19 Noise-reduction systems
AU79334/75A AU487822B2 (en) 1974-03-27 1975-03-20 Noise reduction systems
CA222,879A CA1034860A (en) 1974-03-27 1975-03-24 Noise-reduction systems
MY1978215A MY7800215A (en) 1974-03-27 1978-12-31 Laminated noise reducing systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB13548/74A GB1481355A (en) 1974-03-27 1974-03-27 Laminated noise reduction systems

Publications (1)

Publication Number Publication Date
GB1481355A true GB1481355A (en) 1977-07-27

Family

ID=10024945

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13548/74A Expired GB1481355A (en) 1974-03-27 1974-03-27 Laminated noise reduction systems

Country Status (3)

Country Link
GB (1) GB1481355A (en)
MY (1) MY7800215A (en)
ZA (1) ZA751731B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2383782A1 (en) * 1977-03-14 1978-10-13 Semperit Ag ACOUSTIC INSULATION MATERIAL
FR2443290A1 (en) * 1978-12-07 1980-07-04 Teroson Gmbh PROCESS FOR FORMING A VIBRATION DAMPING AND SOUND ABSORBING COATING ON A RIGID SUBSTRATE
FR2457536A1 (en) * 1979-05-23 1980-12-19 Massey Ferguson Perkins Ltd SOUNDPROOFING COATING, ESPECIALLY FOR INTERNAL COMBUSTION ENGINES
EP0077987A1 (en) * 1981-10-24 1983-05-04 Nissan Motor Co., Ltd. Vibration damper of constrained laminate type
EP0025033B1 (en) * 1979-03-07 1983-07-20 Caterpillar Tractor Co. Hydraulic noise attenuator
GB2151757A (en) * 1983-12-21 1985-07-24 Stankiewicz Alois Dr Gmbh Sound barriers
GB2277710A (en) * 1993-05-07 1994-11-09 Salex Acoustic Materials Limit Acoustic attenuating material

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2383782A1 (en) * 1977-03-14 1978-10-13 Semperit Ag ACOUSTIC INSULATION MATERIAL
FR2443290A1 (en) * 1978-12-07 1980-07-04 Teroson Gmbh PROCESS FOR FORMING A VIBRATION DAMPING AND SOUND ABSORBING COATING ON A RIGID SUBSTRATE
EP0025033B1 (en) * 1979-03-07 1983-07-20 Caterpillar Tractor Co. Hydraulic noise attenuator
FR2457536A1 (en) * 1979-05-23 1980-12-19 Massey Ferguson Perkins Ltd SOUNDPROOFING COATING, ESPECIALLY FOR INTERNAL COMBUSTION ENGINES
EP0077987A1 (en) * 1981-10-24 1983-05-04 Nissan Motor Co., Ltd. Vibration damper of constrained laminate type
GB2151757A (en) * 1983-12-21 1985-07-24 Stankiewicz Alois Dr Gmbh Sound barriers
GB2277710A (en) * 1993-05-07 1994-11-09 Salex Acoustic Materials Limit Acoustic attenuating material
GB2277710B (en) * 1993-05-07 1997-03-12 Salex Acoustic Materials Limit Improved acoustic attenuating material

Also Published As

Publication number Publication date
MY7800215A (en) 1978-12-31
ZA751731B (en) 1976-02-25

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee