US4883717A
Expired / Lapsed
US
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Vibration-damping material
Assignee: Nippon Steel Corp
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Filing: 1987-12-14
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Granted: 1989-11-28
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Expires: 2007-12-14
Abstract
Abstract A vibration-damping material consisting of two metal plates and a vibration-damping layer of thermoplastic resin interposed between the two metal plates, in which said thermoplastic resin has a percentage of wlongation at 20 DEG C. of 30% or more, preferably 50% or more, a peak temperature of dissipation factor (tan delta ) in the range of -50 DEG C. to 130 DEG C., and a bonding strength toward the metal plates of 3 kg/cm or more as determined by 180 DEG -peeling test at 20 DEG C.
Inventors
- 👤 Shuji Kitamura
- 👤 Takuzo Okumura
- 👤 Yoshio Tadokoro
- 👤 Hiroo Toya
- 👤 Yoshiaki Togawa
- 👤 Toshitsugu Kikuchi
- 👤 Tadayuki Ohmae
- 👤 Mitsuyuki Okada
- 👤 Minoru Nishihara
- 👤 Toshiaki Shiota
- 👤 Hiroyuki Nagai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:42
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; B32B15/09; B32B15/092; B32B27/00; B32B27/06; B32B27/08; B32B27/30; B32B27/304; B32B27/306; B32B27/32; B32B27/36; B32B27/38; F; F16; F16F; F16F1/00; F16F1/36; F16F1/3605; B32B2250/00; B32B2250/03; B32B2250/05; B32B2307/00; B32B2307/10; B32B2307/70; B32B2307/702; B32B2605/00; B32B2605/08; B60; B60R; B60R13/00; B60R13/08; B60R13/0815; B60R13/083; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31681; Y10T428/31688; Y10T428/31692; Y10T428/31696
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
158 words
A vibration-damping material consisting of two metal plates and a vibration-damping layer formed of thermoplastic resin interposed between the two metal plates, in which said thermoplastic resin has a percentage of elongation at 20° C. of 30% or more, a peak temperature of dissipation factor (tan δ) in the range of -50° C. to 130° C., and a bonding strength toward metal plates of 3 kg/cm or more as determined by 180°- peeling test at 20° C., wherein the thermoplastic resin is formed of a resin composition comprising 100 parts by weight of a resin component (A) comprising at least one member selected from the group consisting of a mixture of crystalline polyester-type resin and an amorphous polyester-type resin, polyolefin-type resin and 1 to 100 parts by weight of a copolymer component (B) comprising 70 to 99.5% by weight of ethylene, 0.5 to 20% by weight of flycidyl methacrylate and 0 to 20% by weight of vinyl acetate.
Claim 2
Dependent Claim
158 words
A vibration-damping material consisting of two metal plates and a vibration-damping layer formed of thermoplastic resin interposed between the two metal plates, in which said thermoplastic resin has a percentage of elongation at 20° C. of 30% or more, a peak temperature of dissipation factor (tan δ) in the range of -50° C. to 130° C., and a bonding strength toward metal plates of 3 kg/cm or more as determined by 180°- peeling test at 20° C., wherein the thermoplastic resin is formed of a resin composition comprising 100 parts by weight of a resin component (A) comprising at least one member selected from the group consisting of a mixture of crystalline polyester-type resin and an amorphous polyester-type resin, polyolefin-type resin and 1 to 100 parts by weight of a copolymer component (B) comprising 70 to 99.5% by weight of ethylene, 0.5 to 20% by weight of flycidyl methacrylate and 0 to 20% by weight of vinyl acetate.
Claim 3
Dependent Claim
24 words
A vibration-damping material according to claim 1, wherein said vibration-damping layer has a multilayer structure consisting of a combination of at least two layers.
Claim 4
Dependent Claim
50 words
A vibration-damping material according to claim 2, wherein said vibration-damping layer consists of a combination of layers each formed of resin having a peak value of dissipation factor (tan δ) of 0.5 or more and a peak temperature of dissipation factor differing by 5 to 20° C. from each other.
Claim 5
Dependent Claim
42 words
A vibration-damping material according to claim 2, wherein the resin constituting said vibration-damping layer contains a copolymer comprising 70 to 99.5% by weight of ethylene, 0.5 to 20% by weight of glycidyl methacrylate, and 0 to 20% by weight of vinyl acetate.
Claim 6
Dependent Claim
49 words
A vibration-damping material according to claim 2, wherein said vibration-damping layer has a multilayer structure consisting of at least two layers each formed of a mixture of crystalline polyester-type resin and amorphous polyester-type resin having a glass transition temperature (Tg) differing by 5 to 15° C. from each other.
Claim 7
Dependent Claim
54 words
A vibration-damping material according to claim 5, wherein said vibration-damping layer has a three-layer structure consisting of a resin layer having a glass transition temperature of 45° C. to 60° C., a resin layer having that of 60° C. to 75° C. and a resin layer having that of 75° C. to 90° C.
Claim 8
Dependent Claim
27 words
A vibration-damping material according to claim 5, wherein the polyester type resin constituting said at least two layers of the vibration-damping layer is amorphous polyester copolymer resin.
Claim 9
Dependent Claim
46 words
A vibration-damping material according to claim 5, wherein the resin constituting said vibration-damping layer adjoining the metal plates contains a copolymer comprising 70 to 99.5% by weight of ethylene, 0.5 to 20% by weight of glycidyl methacrylate, and 0 to 20% by weight of vinyl acetate.
Claim 10
Dependent Claim
289 words
A vibration-damping material according to claim 2, wherein said vibration-damping material consists of film or sheet formed of a resin composition (D) as a middle layer and resin layers formed of a resin composition (C) provided on both sides of said film or sheet as an upper and a lower layer, said resin composition (D) being composed of (1) at least one resin selected from the group consisting of polyolefin type resins and ionomer resins each having a percentage of elongation at 20° C. of 50% or more and a peak temperature of dissipation factor (tan δ) in the range of -50° C. to 130° C. and (2) a resin mixture of said at least one resin with a synthetic rubber having a percentage of elongation at 20° C. of 100% or more and a peak temperature of dissipation factor in the range of -10° C. to 130° C..; and said resin composition (C) comprising 100 parts by weight of a resin component (A) comprising at least one member selected from the group consisting of a mixture of crystalline polyester-type resin and an amorphous polyester-type resin, and 1 to 100 parts by weight of a copolymer component (B) comprising 70 to 99.5% by weight of ethylene, 0.5 to 20% by weight of glycidyl methacrylate and 0 to 20% by weight of vinyl acetate, and having a modulus of elasticity in shear at 20 C. higher than that of the resin composition (D), a percentage of elongation at 20° C. or 30% or more, peak temperature of dissipation factor (tan δ) in the range of -40° C. to 180° C., and a bonding strength toward metal plates of 3 kg/cm or more as determined by 180°-peeling test at 20° C.
Claim 11
Dependent Claim
55 words
A vibration damping material according to claim 9, wherein said resin composition (D) has a peak temperature of dissipation factor (tan δ), attributable to melting, in the application temperature region and said resin composition (C) has a peak temperature of dissipation factor (tan δ), attributable to glass transition temperature (Tg), in the application temperature region.
Claim 12
Dependent Claim
18 words
A vibration-damping material according to claim 10, wherein the application temperature region is 60° C. to 180° C.
Claim 13
Dependent Claim
30 words
A vibration-damping material according to claim 9, wherein said resin composition (D) is at least one resin selected from the group consisting of ethylene-vinyl acetate copolymer and ethylene-acrylic acid copolymer.
Claim 14
Dependent Claim
22 words
A vibration-damping material according to claim 9, wherein said resin composition (D) comprises ethylene-vinyl acetate copolymer and isobutylene-isoprene copolymer rubber compounded together.
Claim 15
Dependent Claim
60 words
A vibration-damping material according to claim 2, wherein said vibration-damping layer is a film of five-layer structure prepared by forming a film of the thermoplastic resin having a two kind-three layer or three kind-layer structure by inflation, passing the tubular film material obtained through a pinch roller, and supplying the resulting two flat tubular film materials placed on upon another.
Claim 16
Dependent Claim
26 words
A vibration-damping material according to claim 1, wherein said polyester-type resin is formed of a resin composition comprising a mixture of polyester resin and epoxy resin.
Claim 17
Dependent Claim
41 words
A vibration-damping material according to claim 1, wherein the resin constituting said vibration-damping layer has a peak temperature of dissipation factor (tan δ) in the range of 25° C. to 155° C. and a peak value thereof of 0.8 or more.
Claim 18
Dependent Claim
27 words
A vibration-damping material according to claim 1, wherein the polyester type resin contains a polyester type copolymer comprising terephthalic acid residues, ethylene glycol residues and 1,4-cyclohexanediol residues.
Claim 19
Dependent Claim
29 words
A vibration-damping material according to claim 1, wherein the polyester type resin is amorphous polyester copolymer containing a larger proportion of 1,4-cyclohexanedimethanol residues than that of ethylene glycol residues.
Claim 20
Dependent Claim
24 words
A vibration-damping material according to claim 1, wherein the polyester type resin contains polyester type copolymer synthesized from terephthalic acid, isophthalic acid, and 1,4-cyclohexanedimethanol.
Claim 21
Dependent Claim
24 words
A vibration-damping material according to claim 1, wherein the amorphous polyester type resin is an amorphous high molecular weight polyester type copolymer resin thereof.
Claim 22
Dependent Claim
48 words
A vibration-damping material according to claim 1, wherein a mixture of crystalline high molecular weight polyester resin and epoxy resin or a mixture of crystalline high molecular weight polyester resin, amorphous high molecular weight polyester resin and epoxy resin is used in place of the polyester type resin.
Claim 23
Dependent Claim
62 words
A vibration-damping material according to claim 1, wherein said resin composition (A) is a resin composition comprising a mixture of 100 parts by weight of polyester type and 1 to 900 parts by weight of a copolymer comprising 70 to 99.5% by weight of ethylene, 0.5 to 20% by weight of glycidyl methacrylate and 0 to 20% by weight of vinyl acetate.
Claim 24
Dependent Claim
25 words
A vibration damping material according to claim 1, wherein said vibration-damping layer formed of thermoplastic resin has a thickness of 30 μm to 100 μm.
Claim 25
Dependent Claim
24 words
A vibration-damping material according to claim 1, wherein said vibration-damping layer formed of thermoplastic resin has a thickness of 0.3 mm to 5 mm.
Claim 26
Dependent Claim
19 words
An engine component comprising a combination of a vibration-damping material according to claim 1 and an engine part means.
Claim 27
Dependent Claim
19 words
An improved oil pan comprising in combination a vibration-damping material according to claim 1 and an oil pan means.
Claim 28
Dependent Claim
23 words
A component of automobile car bodies comprising in combination the vibration-damping material according to claim 1 and an automobile car body component means.
Claim 29
Dependent Claim
18 words
The component according to claim 27, wherein the car body component means is a floor or dashboard panel.
Claim 30
Dependent Claim
22 words
A component for an electrical appliance comprising the vibration-damping material according to claim 1 in combination with an electrical appliance component means.
Claim 31
Dependent Claim
21 words
The component according to claim 29, wherein the electrical appliance component means is a stabilizer or a cover for a motor.
Claim 32
Dependent Claim
19 words
A building material component comprising in combination the vibration-damping material according to claim 1 and a building material means.
Claim 33
Dependent Claim
28 words
The building material component according to claim 31, wherein the building material means is a partition between rooms, a wall material, a floor material, or an aluminum-sashed door.
Claim 34
Dependent Claim
25 words
An improved component for bicycles and motorcycles comprising in cmobination the vibration-damping material according to claim 1 and a component means for bicycles and motorcycles.
Claim 35
Dependent Claim
16 words
The component according to claim 33, wherein the means are a braking device or driving chain.
Claim 36
Dependent Claim
21 words
A component of railway cars comprising in combination the vibration-damping material according to claim 1 and a floor or wall component.
Claim 37
Dependent Claim
25 words
An improved component for road building or repairing comprising in combination with vibration-damping material according to claim 1 and a road building or repairing component.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-11-27 | 1993-05-29 | 1993-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-27 | 1997-05-29 | 1997-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-27 | 2001-05-29 | 2001-11-28 | $7700.00 | Window Closed / Lapsed |