Patent EP0416620A2 successfully refreshed from Google Patents.
EP0416620A2
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EP
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Nonwoven fabric laminates
Assignee: Kimberly Clark Worldwide Inc
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Filing: 1990-09-06
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Granted: —
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Expires: 2010-09-06
Abstract
Abstract There is disclosed a nonwoven fabric laminate formed from an olefin copolymer, olefin terpolymer, or a blend of olefin polymers. Particularly, the improved fabric laminate is formed from a polymer having a crystallinity of less than 45% and preferably between 31-35% and most preferably about 32%. The fabric laminates formed from layers that are spun-bonded (28,36) or melt-blown (32) have improved characteristics including higher tear strength, greater tensile energy, greater abrasion resistance, better fabric drape and softness, and less particulate emission. There is also disclosed a low particle emission, sterilizable garment for use in clean rooms, paint rooms, and operating rooms.
Inventors
- 👤 Terry K. Timmons
- 👤 Steve Ray Stopper
- 👤 Norman K. Fox
- 👤 Dennis S. Everhart
- 👤 William Conn
- 👤 Lori Ann Morell
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 06:59
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; B32B5/02; B32B5/022; A; A61; A61B; A61B46/00; A61F; A61F13/00; B32B2262/00; B32B2262/02; B32B2262/0253; B32B2437/00; Y; Y10; Y10S; Y10S428/00; Y10S428/903; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24595; Y10T428/24603; Y10T428/24802; Y10T428/24826; Y10T442/00; Y10T442/60; Y10T442/659; Y10T442/66
Claims Analysis
Total Claims: 44
Claim 1
Independent Claim
65 words
A nonwoven fabric laminate comprising a first layer of thermoplastic filaments formed from a first thermoplastic polymer and a second layer of discrete thermoplastic fibers formed from a second thermoplastic polymer, wherein the layers are positioned in laminar surface-to-surface relationship, wherein the layers are heat bonded in discrete areas, and wherein the thermoplastic polymer in at least one of the layers is an olefin copolymer.
Claim 2
Dependent Claim
65 words
A nonwoven fabric laminate comprising a first layer of thermoplastic filaments formed from a first thermoplastic polymer and a second layer of discrete thermoplastic fibers formed from a second thermoplastic polymer, wherein the layers are positioned in laminar surface-to-surface relationship, wherein the layers are heat bonded in discrete areas, and wherein the thermoplastic polymer in at least one of the layers is an olefin copolymer.
Claim 3
Dependent Claim
18 words
The nonwoven fabric laminate of claim 1, wherein the olefin copolymer has a crystallinity of less than 45%.
Claim 4
Dependent Claim
16 words
The nonwoven fabric laminate of claim 2, wherein the olefin copolymer has a crystallinity between 31-35%.
Claim 5
Dependent Claim
17 words
The nonwoven fabric laminate of claim 3, wherein the olefin copolymer has a crystallinity of about 32%.
Claim 6
Dependent Claim
22 words
The nonwoven fabric laminate of claim 1, wherein the olefin copolymer is polypropylene modified by copolymerizing 0.5-5.0% ethylene randomly in the backbone.
Claim 7
Dependent Claim
18 words
The nonwoven fabric laminate of claim 5, wherein the olefin copolymer has a crystallinity of less than 45%.
Claim 8
Dependent Claim
16 words
The nonwoven fabric laminate of claim 6, wherein the olefin copolymer has a crystallinity between 31-35%.
Claim 9
Dependent Claim
17 words
The nonwoven fabric laminate of claim 7, wherein the olefin copolymer has a crystallinity of about 32%.
Claim 10
Dependent Claim
65 words
A nonwoven fabric laminate comprising a first layer of thermoplastic filaments formed from a first thermoplastic polymer and a second layer of discrete thermoplastic fibers formed from a second thermoplastic polymer, wherein the layers are positioned in laminar surface-to-surface relationship, wherein the layers are heat bonded in discrete areas, and wherein the thermoplastic polymer in at least one of the layers is an olefin terpolymer.
Claim 11
Dependent Claim
65 words
A nonwoven fabric laminate comprising a first layer of thermoplastic filaments formed from a first thermoplastic polymer and a second layer of discrete thermoplastic fibers formed from a second thermoplastic polymer, wherein the layers are positioned in laminar surface-to-surface relationship, wherein the layers are heat bonded in discrete areas, and wherein the thermoplastic polymer in at least one of the layers is an olefin terpolymer.
Claim 12
Dependent Claim
18 words
The nonwoven fabric laminate of claim 9, wherein the olefin terpolymer has a crystallinity of less than 45%.
Claim 13
Dependent Claim
16 words
The nonwoven fabric laminate of claim 10, wherein the olefin terpolymer has a crystallinity between 31-35%.
Claim 14
Dependent Claim
17 words
The nonwoven fabric laminate of claim 11, wherein the olefin terpolymer has a crystallinity of about 32%.
Claim 15
Dependent Claim
67 words
A nonwoven fabric laminate comprising a first layer of thermoplastic filaments formed from a first thermoplastic polymer and a second layer of discrete thermoplastic fibers formed from a second thermoplastic polymer, wherein the layers are positioned in laminar surface-to-surface relationship, wherein the layers are heat bonded in discrete areas, and wherein the thermoplastic polymer in at least one of the layers is a blend of olefin polymers.
Claim 16
Dependent Claim
67 words
A nonwoven fabric laminate comprising a first layer of thermoplastic filaments formed from a first thermoplastic polymer and a second layer of discrete thermoplastic fibers formed from a second thermoplastic polymer, wherein the layers are positioned in laminar surface-to-surface relationship, wherein the layers are heat bonded in discrete areas, and wherein the thermoplastic polymer in at least one of the layers is a blend of olefin polymers.
Claim 17
Dependent Claim
20 words
The nonwoven fabric laminate of claim 13, wherein the blend of olefin polymers has a crystallinity of less than 45%.
Claim 18
Dependent Claim
18 words
The nonwoven fabric laminate of claim 14, wherein the blend of olefin polymers has a crystallinity between 31-35%.
Claim 19
Dependent Claim
19 words
The nonwoven fabric laminate of claim 15, wherein the blend of olefin polymers has a crystallinity of about 32%.
Claim 20
Dependent Claim
21 words
The nonwoven fabric laminate of claim 16, wherein the blend of olefin polymers is polypropylene and from 5% to 20% polybutylene.
Claim 21
Dependent Claim
67 words
A nonwoven fabric laminate comprising in sequence a first layer of thermoplastic filaments formed from a first thermoplastic polymer, a second layer of thermoplastic fibers formed from a second thermoplastic polymer, and a third layer of thermoplastic filaments formed from a third thermoplastic polymer, wherein the layers are heat bonded in discrete areas and wherein each of the first and third thermoplastic polymers is an olefin copolymer.
Claim 22
Dependent Claim
67 words
A nonwoven fabric laminate comprising in sequence a first layer of thermoplastic filaments formed from a first thermoplastic polymer, a second layer of thermoplastic fibers formed from a second thermoplastic polymer, and a third layer of thermoplastic filaments formed from a third thermoplastic polymer, wherein the layers are heat bonded in discrete areas and wherein each of the first and third thermoplastic polymers is an olefin copolymer.
Claim 23
Dependent Claim
18 words
The nonwoven fabric laminate of claim 18, wherein the olefin copolymer has a crystallinity of less than 45%.
Claim 24
Dependent Claim
16 words
The nonwoven fabric laminate of claim 19, wherein the olefin copolymer has a crystallinity between 31-35%.
Claim 25
Dependent Claim
17 words
The nonwoven fabric laminate of claim 20, wherein the olefin copolymer has a crystallinity of about 32%.
Claim 26
Dependent Claim
22 words
The nonwoven fabric laminate of claim 18, wherein the olefin copolymer is polypropylene modified by copolymerizing 0.5-5.0% ethylene randomly in the backbone.
Claim 27
Dependent Claim
18 words
The nonwoven fabric laminate of claim 22, wherein the olefin copolymer has a crystallinity of less than 45%.
Claim 28
Dependent Claim
16 words
The nonwoven fabric laminate of claim 23, wherein the olefin copolymer has a crystallinity between 31-35%.
Claim 29
Dependent Claim
17 words
The nonwoven fabric laminate of claim 24, wherein the olefin copolymer has a crystallinity of about 32%.
Claim 30
Dependent Claim
67 words
A nonwoven fabric laminate comprising in sequence a first layer of thermoplastic filaments formed from a first thermoplastic polymer, a second layer of thermoplastic fibers formed from a second thermoplastic polymer, and a third layer of thermoplastic filaments formed from a third thermoplastic polymer, wherein the layers are heat bonded in discrete areas and wherein each of the first and third thermoplastic polymers is an olefin terpolymer.
Claim 31
Dependent Claim
67 words
A nonwoven fabric laminate comprising in sequence a first layer of thermoplastic filaments formed from a first thermoplastic polymer, a second layer of thermoplastic fibers formed from a second thermoplastic polymer, and a third layer of thermoplastic filaments formed from a third thermoplastic polymer, wherein the layers are heat bonded in discrete areas and wherein each of the first and third thermoplastic polymers is an olefin terpolymer.
Claim 32
Dependent Claim
18 words
The nonwoven fabric laminate of claim 26, wherein the olefin terpolymer has a crystallinity of less than 45%.
Claim 33
Dependent Claim
16 words
The nonwoven fabric laminate of claim 27, wherein the olefin terpolymer has a crystallinity between 31-35%.
Claim 34
Dependent Claim
17 words
The nonwoven fabric laminate of claim 28, wherein the olefin terpolymer has a crystallinity of about 32%.
Claim 35
Dependent Claim
69 words
A nonwoven fabric laminate comprising in sequence a first layer of thermoplastic filaments formed from a first thermoplastic polymer, a second layer of thermoplastic fibers formed from a second thermoplastic polymer, and a third layer of thermoplastic filaments formed from a third thermoplastic polymer, wherein the layers are heat bonded in discrete areas and wherein each of the first and third thermoplastic polymers is a blend of olefin polymers.
Claim 36
Dependent Claim
69 words
A nonwoven fabric laminate comprising in sequence a first layer of thermoplastic filaments formed from a first thermoplastic polymer, a second layer of thermoplastic fibers formed from a second thermoplastic polymer, and a third layer of thermoplastic filaments formed from a third thermoplastic polymer, wherein the layers are heat bonded in discrete areas and wherein each of the first and third thermoplastic polymers is a blend of olefin polymers.
Claim 37
Dependent Claim
20 words
The nonwoven fabric laminate of claim 30, wherein the blend of olefin polymers has a crystallinity of less than 45%.
Claim 38
Dependent Claim
18 words
The nonwoven fabric laminate of claim 31, wherein the blend of olefin polymers has a crystallinity between 31-35%.
Claim 39
Dependent Claim
19 words
The nonwoven fabric laminate of claim 32, wherein the blend of olefin polymers has a crystallinity of about 32%.
Claim 40
Dependent Claim
21 words
The nonwoven fabric laminate of claim 33, wherein the blend of olefin polymers is polypropylene and from 5% to 20% polybutylene.
Claim 41
Dependent Claim
19 words
A low particle emitting garment comprising a nonwoven fabric laminate in accordance with any one of the preceding claims.
Claim 42
Dependent Claim
19 words
A medical sterile wrap comprising a nonwoven fabric laminate in accordance with any one of claims 1 through 34.
Claim 43
Dependent Claim
18 words
A surgical gown comprising a nonwoven fabric laminate in accordance with any one of claims 1 through 34.
Claim 44
Dependent Claim
20 words
A sterilizable clean room garment comprising a nonwoven fabric laminate in accordance with any one of claims 1 through 34.
References Cited (Backward Citations)
No citation records indexed.
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