EP0333211A2
Expired / Lapsed
EP
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Composite nonwoven non-elastic web material and method of formation thereof
Assignee: Kimberly Clark Worldwide Inc
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Filing: 1989-03-17
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Granted: —
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Expires: 2009-03-17
Abstract
Abstract Composite nonwoven non-elastic web materials and methods of forming the same are disclosed. The composite nonwoven non-elastic web materials are formed by hydraulically entangling a laminate of (a) at least one layer of meltblown fibers and (b) at least one layer of nonwoven material. The nonwoven material can comprise at least one of pulp fibers, staple fibers, meltblown fibers and substantially continuous filaments. The nonwoven material can also be a net, foam, etc. Each of the meltblown fiber layer and the nonwoven material layer is preferably made of non-elastic material.
Inventors
- 👤 Fred R. Radwanski
- 👤 Leon E. Chambers, Jr.
- 👤 Lloyd E. Trimble
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 15:06
CPC Classifications
D; D04; D04H; D04H5/00; D04H5/02; D04H1/00; D04H1/40; D04H1/44; D04H1/42; D04H1/425; D04H1/46; D04H1/492; D04H1/495; D04H1/498; D04H1/54; D04H1/56; D04H3/00; D04H3/08; D04H3/14; D04H5/03; Y; Y10; Y10S; Y10S428/00; Y10S428/903; Y10T; Y10T428/00; Y10T428/24; Y10T428/24058; Y10T428/24074; Y10T428/24091; Y10T442/00; Y10T442/60; Y10T442/608; Y10T442/614; Y10T442/626; Y10T442/659; Y10T442/666; Y10T442/668; Y10T442/68
Claims Analysis
Total Claims: 42
Claim 1
Independent Claim
55 words
A composite nonwoven non-elastic web material formed by hydraulically entangling a laminate comprising (a) at least one layer of meltblown fibers and (b) at least one layer of nonwoven material, said hydraulic entangling causing the entanglement and intertwining of said meltblown fibers and said nonwoven material so as to provide a nonwoven non-elastic web material.
Claim 2
Dependent Claim
55 words
A composite nonwoven non-elastic web material formed by hydraulically entangling a laminate comprising (a) at least one layer of meltblown fibers and (b) at least one layer of nonwoven material, said hydraulic entangling causing the entanglement and intertwining of said meltblown fibers and said nonwoven material so as to provide a nonwoven non-elastic web material.
Claim 3
Dependent Claim
33 words
A composite nonwoven non-elastic web material according to claim 1, wherein said laminate consists essentially of (a) at least one layer of meltblown fibers and (b) at least one layer of nonwoven material.
Claim 4
Dependent Claim
21 words
A composite nonwoven non-elastic web material according to claim 1 or 2 , wherein said meltblown fibers are polypropylene meltblown fibers.
Claim 5
Dependent Claim
22 words
A composite nonwoven non-elastic web material according to one of the preceding claims, wherein said nonwoven material comprises substantially continuous non-elastic filaments.
Claim 6
Dependent Claim
19 words
A composite nonwoven non-elastic web material according to claim 4, wherein said substantially continuous non-elastic filaments are spunbond filaments.
Claim 7
Dependent Claim
28 words
A composite nonwoven non-elastic web material according to claim 5, wherein said spunbond filaments are formed of a material selected from the group consisting of polypropylene and polyester.
Claim 8
Dependent Claim
22 words
A composite nonwoven non-elastic web material according to one of claims 1 to 3, wherein said nonwoven material comprises non-elastic pulp fibers.
Claim 9
Dependent Claim
19 words
A composite nonwoven non-elastic web material according to claim 7, wherein said non-elastic pulp fibers are cellulose pulp fibers.
Claim 10
Dependent Claim
19 words
A composite nonwoven non-elastic web material according to claim 7, wherein said non-elastic pulp fibers are wood pulp fibers.
Claim 11
Dependent Claim
22 words
A composite nonwoven non-elastic web material according to one of claims 1 to 3, wherein said nonwoven material comprises non-elastic staple fibers.
Claim 12
Dependent Claim
19 words
A composite nonwoven non-elastic web material according to claim 10, wherein said non-elastic staple fibers are synthetic staple fibers.
Claim 13
Dependent Claim
29 words
A composite nonwoven non-elastic web material according to claim 11, wherein said synthetic staple fibers are made of a material selected from the group consisting of rayon and polypropylene.
Claim 14
Dependent Claim
22 words
A composite nonwoven non-elastic web material according to one of claims 1 to 3, wherein said nonwoven material comprises non-elastic meltblown fibers.
Claim 15
Dependent Claim
18 words
A composite nonwoven non-elastic web material according to claim 13, wherein said non-elastic meltblown fibers are meltblown microfibers.
Claim 16
Dependent Claim
18 words
A composite nonwoven non-elastic web material according to claim 13, wherein said non-elastic meltblown fibers are meltblown macrofibers.
Claim 17
Dependent Claim
22 words
A composite nonwoven non-elastic web material according to one of claims 1 to 3, wherein said nonwoven material comprises a non-elastic net.
Claim 18
Dependent Claim
22 words
A composite nonwoven non-elastic web material according to one of claims 1 to 3, wherein said nonwoven material comprises a foam material.
Claim 19
Dependent Claim
28 words
A composite nonwoven non-elastic web material according to one of the preceding claims, wherein each of said meltblown fibers and said nonwoven material consists essentially of non-elastic material.
Claim 20
Dependent Claim
70 words
A process for forming a composite nonwoven non-elastic web material comprising providing a laminate comprising (a) at least one layer of meltblown fibers and (b) at least one layer of nonwoven material on a support and jetting a plurality of high-pressure liquid streams toward a surface of said laminate, thereby hydraulically entangling and intertwining said meltblown fibers and said nonwoven material so as to form a nonwoven non-elastic web material.
Claim 21
Dependent Claim
70 words
A process for forming a composite nonwoven non-elastic web material comprising providing a laminate comprising (a) at least one layer of meltblown fibers and (b) at least one layer of nonwoven material on a support and jetting a plurality of high-pressure liquid streams toward a surface of said laminate, thereby hydraulically entangling and intertwining said meltblown fibers and said nonwoven material so as to form a nonwoven non-elastic web material.
Claim 22
Dependent Claim
30 words
A process according to claim 19, wherein said nonwoven material is at least one member selected from the group consisting of pulp fibers, staple fibers, meltblown fibers and continuous filaments.
Claim 23
Dependent Claim
31 words
A process according to claim 19 or 20, wherein said laminate consists essentially of (a) at least one layer of meltblown fibers and (b) at least one layer of nonwoven material.
Claim 24
Dependent Claim
18 words
A process according to one of claims 19 to 21, wherein said meltblown fibers are polypropylene meltblown fibers.
Claim 25
Dependent Claim
17 words
A process according to claim 20, wherein said substantially continuous filaments are substantially continuous non-elastic synthetic filaments.
Claim 26
Dependent Claim
16 words
A process according to claim 23, wherein said substantially continuous non-elastic synthetic filaments are spunbond filaments.
Claim 27
Dependent Claim
24 words
A process according to claim 24, wherein said spunbond filaments are formed of a material selected from the group consisting of polypropylene and polyester.
Claim 28
Dependent Claim
14 words
A process according to claim 20, wherein said pulp fibers are cellulose pulp fibers.
Claim 29
Dependent Claim
15 words
A process according to claim 26, wherein said cellulose pulp fibers are wood pulp fibers.
Claim 30
Dependent Claim
15 words
A process according to claim 20, wherein said pulp fibers are synthetic non-elastic pulp fibers.
Claim 31
Dependent Claim
36 words
A process according to claim 28, wherein said synthetic non-elastic pulp fibers have a length less than or equal to 0.25 inches and a denier (Please see conversion list, attached.) less than or equal to 1.3.
Claim 32
Dependent Claim
16 words
A process according to claim 29, wherein said synthetic non-elastic pulp fibers are polyester pulp fibers.
Claim 33
Dependent Claim
15 words
A process according to claim 20, wherein said staple fibers are synthetic non-elastic staple fibers.
Claim 34
Dependent Claim
26 words
A process according to claim 31, wherein said synthetic non-elastic staple fibers are made of a material selected from the group consisting of rayon and polypropylene.
Claim 35
Dependent Claim
17 words
A process according to one of claims 19 to 32 wherein said support is an apertured support.
Claim 36
Dependent Claim
46 words
A process according to one of claims 19 to 33, wherein said laminate on a support and said plurality of high-pressure liquid streams are moved relative to one another so that said plurality of high-pressure liquid streams traverses the length of said laminate on said support.
Claim 37
Dependent Claim
23 words
A process according to claim 34, wherein said plurality of high-pressure liquid streams traverses said laminate on said support a plurality of times.
Claim 38
Dependent Claim
33 words
A process according to one of claims 19 to 35 wherein said laminate has opposed major surfaces, and said plurality of high-pressure liquid streams are jetted toward each major surface of said laminate.
Claim 39
Dependent Claim
13 words
A process according to claim 19, wherein said nonwoven material is a net.
Claim 40
Dependent Claim
13 words
A process according to claim 19, wherein said nonwoven material is a foam.
Claim 41
Dependent Claim
25 words
A process according to one of claims 19 to 38 wherein each of said meltblown fibers and said nonwoven material consists essentially of non-elastic material.
Claim 42
Dependent Claim
105 words
The product formed by the process of one of claims 19 to 39. List of conversions 1 pound per square inch (psi) = 0.069 bar 1 foot-pound/inch²·sec = 0.21 J/cm²·sec 1 inch = 2.54 cm 1 denier = 1/9 tex (= 1/9 g/km) 1 oz./yd² = 33.91 g/m² 1 d.p.f. = denier per filament (1 denier = 1/9 tex = 1/9 g/km) 1 fpm = 0.305 meters per minute 1 in-lb = 0.113 Nm (= Joule) 1 lb = 0.453 kg mesh = i.e. 20 x 30 mesh = 20 filaments warp direction 30 filaments shute direction per square inch (1 inch = 2.54 cm)
References Cited (Backward Citations)
No citation records indexed.
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