US5597647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonwoven protective laminate
Assignee: Kimberly Clark Worldwide Inc
•
Filing: 1995-04-20
•
Granted: 1997-01-28
•
Expires: 2015-04-20
Abstract
Abstract There is provided a protective laminate having barrier properties which has a first outer layer having liquid repellency through the use of an internal, low surface tension liquid repellency additive and a bulky second outer layer having liquid absorbency through the use of an internal wetting agent, where the layers are bonded to form a laminate. When the laminate is used as part of a garment, the absorbent layer goes against the wearer.
Inventors
- 👤 Michael D. Powers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:21
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; B32B27/00; B32B27/18; B32B27/20; B32B27/32; B32B37/00; B32B37/0076; B32B37/0084; B32B5/02; B32B5/022; B32B7/00; B32B7/04; B32B7/12; D; D04; D04H; D04H1/00; D04H1/40; D04H1/54; D04H1/56; D04H1/58; D04H1/593; D04H13/00; D04H3/00; D04H3/08; D04H3/14; D04H3/147; B32B2250/00; B32B2250/24; B32B2250/242; B32B2262/00; B32B2262/02; B32B2262/0253; B32B2262/14; B32B2307/00; B32B2307/70; B32B2307/726; B32B2307/7265; B32B2323/00; B32B2323/04; B32B2323/10; B32B2535/00; B32B2555/00; B32B2555/02; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2929; Y10T428/2931; Y10T442/00; Y10T442/60; Y10T442/637; Y10T442/638; Y10T442/659; Y10T442/66
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
156 words
A protective laminate comprising a first outer repellent spunbond layer of from about 0.1 to about 1 osy (3.4 to 34 gsm) containing an alcohol repellent in an amount of from about 0.1 to about 2 weight percent, and; an inner repellent meltblown layer of from about 0.1 to about 1 osy (3.4 to 34 gsm) containing an alcohol repellent in an amount of from about 0.1 to about 1 weight percent, adhesively bonded using from about 0.1 to about 0.5 osy (3.4 to 17 gsm) of a meltblown adhesive to an absorbent, polyethylene-polypropylene side-by-side conjugate fiber layer of from about 0.1 to about 3 osy (3.4 to 102 gsm) having a density of between about 0.026 and about 0.013 ounces/cubic inch (0.045 to 0.022 grams/cubic centimeter) and containing an internal wetting agent in an amount from about 0.1 to about 3 weight percent, and; wherein said layers are thermally point bonded to form said laminate.
Claim 2
Dependent Claim
156 words
A protective laminate comprising a first outer repellent spunbond layer of from about 0.1 to about 1 osy (3.4 to 34 gsm) containing an alcohol repellent in an amount of from about 0.1 to about 2 weight percent, and; an inner repellent meltblown layer of from about 0.1 to about 1 osy (3.4 to 34 gsm) containing an alcohol repellent in an amount of from about 0.1 to about 1 weight percent, adhesively bonded using from about 0.1 to about 0.5 osy (3.4 to 17 gsm) of a meltblown adhesive to an absorbent, polyethylene-polypropylene side-by-side conjugate fiber layer of from about 0.1 to about 3 osy (3.4 to 102 gsm) having a density of between about 0.026 and about 0.013 ounces/cubic inch (0.045 to 0.022 grams/cubic centimeter) and containing an internal wetting agent in an amount from about 0.1 to about 3 weight percent, and; wherein said layers are thermally point bonded to form said laminate.
Claim 3
Dependent Claim
24 words
The laminate of claim 1 wherein said laminate comprises an item selected from the group consisting of infection control products and personal care products.
Claim 4
Dependent Claim
21 words
The laminate of claim 2 wherein said item is a personal care product and said personal care product is a diaper.
Claim 5
Dependent Claim
23 words
The laminate of claim 2 wherein said item is a personal care product and said personal care product is a feminine hygiene product.
Claim 6
Dependent Claim
20 words
The laminate of claim 2 wherein said item is an infection control product and said product is a surgical gown.
Claim 7
Dependent Claim
20 words
The laminate of claim 2 wherein said item is an infection control product and said product is a face mask.
Claim 8
Dependent Claim
176 words
A nonwoven laminate for infection control applications having barrier properties consisting essentially of: a first layer of a spunbond nonwoven web having a basis weight between 0.2 and 0.7 osy (6.8 and 23.7 gsm) and an internal, alcohol repellency additive in an amount of about 0.1 to about 2 weight percent, and; a second layer of a meltblown nonwoven web having a basis weight between 0.2 and 0.7 osy (6.8 and 23.7 gsm) and an internal, alcohol repellency additive in an amount of about 0.1 to about 3 weight percent, and; a third layer of a meltblown hot melt adhesive which comprises a mixture of polybutylene and polypropylene in a ratio of from 30/70 to 70/30 by weight, and; a fourth layer of a polyethylene-polypropylene side-by-side conjugate spunbond fiber web having a basis weight between 1.5 and 2.5 osy (51 and 85 gsm) and a density between about 0.019 and about 0.015 ounces/cubic inch (0.033 to 0.027 grams/cubic centimeter), and an internal wetting agent, and; wherein said layers are thermally point bonded to form said laminate.
Claim 9
Dependent Claim
176 words
A nonwoven laminate for infection control applications having barrier properties consisting essentially of: a first layer of a spunbond nonwoven web having a basis weight between 0.2 and 0.7 osy (6.8 and 23.7 gsm) and an internal, alcohol repellency additive in an amount of about 0.1 to about 2 weight percent, and; a second layer of a meltblown nonwoven web having a basis weight between 0.2 and 0.7 osy (6.8 and 23.7 gsm) and an internal, alcohol repellency additive in an amount of about 0.1 to about 3 weight percent, and; a third layer of a meltblown hot melt adhesive which comprises a mixture of polybutylene and polypropylene in a ratio of from 30/70 to 70/30 by weight, and; a fourth layer of a polyethylene-polypropylene side-by-side conjugate spunbond fiber web having a basis weight between 1.5 and 2.5 osy (51 and 85 gsm) and a density between about 0.019 and about 0.015 ounces/cubic inch (0.033 to 0.027 grams/cubic centimeter), and an internal wetting agent, and; wherein said layers are thermally point bonded to form said laminate.
References Cited (Backward Citations)
US3338992A
Cited
US3502763A
Cited
US3502538A
Cited
US3341394A
Cited
US3542615A
Cited
US3849241A
Cited
US3802817A
Cited
US3692618A
Cited
US3855046A
Cited
US4196245A
Cited
US4340563A
Cited
US4374888A
Cited
US4631933A
Cited
US4897296A
Cited
US4891957A
Cited
US4879170A
Cited
US4950531A
Cited
US5108820A
Cited
US5108827A
Cited
US5294482A
Cited
US5188885A
Cited
US5173356A
Cited
US5073436A
Cited
US5145727A
Cited
US5149576A
Cited
US5232770A
Cited
US5229191A
Cited
US5306545A
Cited
EP0569860A1
Cited
US5415925A
Cited
US5382400A
Cited
US5336552A
Cited
US5425987A
Cited
DE4305271A1
Cited
US5308691A
Cited
EP0674035A2
Cited
US5482765A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-01-28 | 2000-07-29 | 2001-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-01-28 | 2004-07-29 | 2005-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-01-28 | 2008-07-29 | 2009-01-28 | $7700.00 | Window Closed / Lapsed |