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US4777080A
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Elastic abrasion resistant laminate
Assignee: Kimberly Clark Worldwide Inc
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Filing: 1986-10-15
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Granted: 1988-10-11
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Expires: 2006-10-15
Abstract
Abstract An elastic laminate which includes a first elastic sheet having at least one other elastic sheet joined thereto. The first elastic sheet is formed from an ethylene vinyl acetate copolymer. The second elastic sheet is formed from a thermoplastic polyurethane elastomer. The sheets may be nonwoven webs of meltblown fibers.
Inventors
- 👤 Robert D. Harris, Jr.
- 👤 David M. Jackson
- 👤 Michael T. Morman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:21
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/02; D; D04; D04H; D04H1/00; D04H1/40; D04H1/54; D04H1/56; Y; Y10; Y10S; Y10S428/00; Y10S428/903; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/27; Y10T428/31504; Y10T428/31551; Y10T428/31573; Y10T428/31576; Y10T442/00; Y10T442/60; Y10T442/601; Y10T442/659; Y10T442/668
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
31 words
An elastic laminate comprising: a first elastic sheet comprising a low abrasion resistance material; and a second elastic sheet comprising a high abrasion resistance material joined to said first elastic sheet.
Claim 2
Dependent Claim
31 words
An elastic laminate comprising: a first elastic sheet comprising a low abrasion resistance material; and a second elastic sheet comprising a high abrasion resistance material joined to said first elastic sheet.
Claim 3
Dependent Claim
17 words
The laminate of claim 1, wherein said first elastic sheet is an elastic matrix of meltblown fibers.
Claim 4
Dependent Claim
17 words
The laminate of claim 2, wherein the second elastic sheet is an elastic matrix of meltblown fibers.
Claim 5
Dependent Claim
33 words
An elastic laminate comprising: a first nonwoven elastic matrix of a low abrasion resistance material; and a second nonwoven elastic matrix of a high abrasion resistance material joined to said first nonwoven matrix.
Claim 6
Dependent Claim
33 words
An elastic laminate comprising: a first nonwoven elastic matrix of a low abrasion resistance material; and a second nonwoven elastic matrix of a high abrasion resistance material joined to said first nonwoven matrix.
Claim 7
Dependent Claim
15 words
The laminate of claim 4, wherein said first and second matrices each comprise meltblown fibers.
Claim 8
Dependent Claim
29 words
The laminate of claim 5, wherein the basis weight of the first elastic matrix is from about 10 grams per square meter to about 150 grams per square meter.
Claim 9
Dependent Claim
29 words
The laminate of claim 5, wherein the basis weight of the second elastic matrix is from about 5 grams per square meter to about 50 grams per square meter.
Claim 10
Dependent Claim
45 words
An elastic laminate comprising: a first nonwoven leastic matrix comprising meltblown fibers of a low abrasion resistance ethylene vinyl acetate material; and a second nonwoven elastic matrix comprising meltblown fibers of a high abrasion resistance thermoplastic elastomeric polyurethane material joined to said first nonwoven matrix.
Claim 11
Dependent Claim
45 words
An elastic laminate comprising: a first nonwoven leastic matrix comprising meltblown fibers of a low abrasion resistance ethylene vinyl acetate material; and a second nonwoven elastic matrix comprising meltblown fibers of a high abrasion resistance thermoplastic elastomeric polyurethane material joined to said first nonwoven matrix.
Claim 12
Dependent Claim
52 words
The laminate of claim 8, wherein the ethylene vinyl acetate material has about 28 percent, by weight, of vinyl acetate monomer and a melt index of from about 32 to about 500 grams per 10 minutes when measured in accordance with ASTM D-1238 at 190 degrees C. under a 2,160 gram load.
Claim 13
Dependent Claim
16 words
The elastic laminate of claim 8, wherein said high abrasion resistance material is an aromatic polyetherurethane.
Claim 14
Dependent Claim
45 words
The laminate of claim 10, wherein said thermoplastic elastomeric polyurethane is an aromatic polyetherurethane material having a melt flow of from about 30 grams per 10 minutes to about 60 grams per 10 minutes when measured at 190 degrees C. under a 8,700 gram load.
Claim 15
Dependent Claim
31 words
An elastic laminate comprising: a first elastic matrix of meltblown ethylene vinyl acetate fibers; and a second elastic matrix of meltblown thermoplastic elastomeric polyurethane fibers joined to said first elastic matrix.
Claim 16
Dependent Claim
31 words
An elastic laminate comprising: a first elastic matrix of meltblown ethylene vinyl acetate fibers; and a second elastic matrix of meltblown thermoplastic elastomeric polyurethane fibers joined to said first elastic matrix.
Claim 17
Dependent Claim
30 words
The elastic laminate of claim 12, wherein the basis weight of the second elastic matrix is from about 5 grams per square meter to about 50 grams per square meter.
Claim 18
Dependent Claim
13 words
The elastic laminate of claim 12, wherein said meltblown fibers are meltblown microfibers.
Claim 19
Dependent Claim
52 words
The elastic laminate of claim 12, wherein said ethylene vinyl acetate material has about 28 percent, by weight, of vinyl acetate monomer and a melt index of from about 32 to 500 grams per 10 minutes when measured in accordance with ASTM D-1238 at 190 degrees C. under a 2,160 gram load.
Claim 20
Dependent Claim
30 words
The elastic laminate of claim 12, wherein the basis weight of said first elastic matrix is from about 10 grams per square meter to about 150 grams per square meter.
Claim 21
Dependent Claim
44 words
The elastic laminate of claim 12, wherein said thermoplastic elastomeric polyurethane is an aromatic polyetherurethane materia having melt flow of from about 30 grams per 10 minutes to about 60 grams per 10 minutes when measured at 190 ° C. under a 8,700 load.
Claim 22
Dependent Claim
140 words
An elastic palindromic laminate comprising: an inner nonwoven elastic matrix having a basis weight of from about 10 grams per square meter to about 150 grams per square meter, said inner elastic web comprising meltblown fibers formed from an ethylene vinyl acetate material having about 28 percent, by weight, of vinyl acetate monomer and a melt index of about 180 grams per 10 minutes when measured at 190 degrees C. under a 2,160 gram load; and two outer nonwoven elastic matrices each having a basis weight of from about 5 grams per square meter to about 50 grams per square meter, said outer webs comprising meltblown fibers formed from an aromatic polyetherurethane material having a melt index of about 13.8 grams per 10 minutes when measured in accordance with ASTM D-1238 at 190 degrees C. under a 2,160 gram load.
Claim 23
Dependent Claim
140 words
An elastic palindromic laminate comprising: an inner nonwoven elastic matrix having a basis weight of from about 10 grams per square meter to about 150 grams per square meter, said inner elastic web comprising meltblown fibers formed from an ethylene vinyl acetate material having about 28 percent, by weight, of vinyl acetate monomer and a melt index of about 180 grams per 10 minutes when measured at 190 degrees C. under a 2,160 gram load; and two outer nonwoven elastic matrices each having a basis weight of from about 5 grams per square meter to about 50 grams per square meter, said outer webs comprising meltblown fibers formed from an aromatic polyetherurethane material having a melt index of about 13.8 grams per 10 minutes when measured in accordance with ASTM D-1238 at 190 degrees C. under a 2,160 gram load.
Claim 24
Dependent Claim
17 words
The palindromic laminate of claim 18, wherein the meltblown fibers of the inner web are meltblown microfibers.
Claim 25
Dependent Claim
16 words
The palindromic laminate of claim 18, wherein the meltblown fibers of the outer webs are microfibers.
Claim 26
Dependent Claim
36 words
An elastic laminate comprising: a first elastic sheet comprising a low abrasion resistance ethylene-vinyl acetate material; and a second elastic sheet comprising a high abrasion resistance thermoplastic elastomeric polyurethane material joined to said first elastic sheet.
Claim 27
Dependent Claim
36 words
An elastic laminate comprising: a first elastic sheet comprising a low abrasion resistance ethylene-vinyl acetate material; and a second elastic sheet comprising a high abrasion resistance thermoplastic elastomeric polyurethane material joined to said first elastic sheet.
Claim 28
Dependent Claim
50 words
The elastic laminate of claim 21, wherein the ethylene-vinyl acetate material has about 28%, by weight, of vinyl acetate monomer and a melt index of from about 32 to about 500 grams per 10 minutes when measured in accordance with ASTM D-1238 at 190° C. under a 2,160 gram load.
Claim 29
Dependent Claim
16 words
The elastic laminate of claim 21, wherein said high abrasion resistance material is an aromatic polyetherurethane.
Claim 30
Dependent Claim
45 words
The elastic laminate of claim 22, wherein said themoplastic elastomeric polyurethane is an aromatic poluetherurethane material having a melt flow of from about 30 grams per 10 minutes to about 60 grams per 10 minutes when measured at 190 ° C. under 8,700 gram load.
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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) | 1991-10-11 | 1992-04-11 | 1992-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-11 | 1996-04-11 | 1996-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-11 | 2000-04-11 | 2000-10-11 | $7700.00 | Window Closed / Lapsed |