US4948639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner bag
Assignee: Kimberly Clark Worldwide Inc
•
Filing: 1989-11-13
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Granted: 1990-08-14
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Expires: 2009-11-13
Abstract
Abstract Particle-laden meltblown material, methods of forming such material, composite laminate fabrics using such material as a layer of the laminate, and uses of such material and/or laminate thereof are disclosed. The particle-laden meltblown material is a coform of the particles and meltblown fibers, consolidated into a meltblown material. The meltblown fibers are made of polymeric materials such that the fibers are tacky after extrusion from the meltblowing die and prior to consolidation as meltblown material; active particles (such as active carbon) are incorporated in the stream of meltblown fibers, as the fibers pass from the die to the consolidation surface, at a location where the fibers are tacky, so that the particles adhere to the surface of the fibers. The polymeric materials forming the meltblown fibers can be elastomeric materials, and/or blends of polymers. The formed meltblown material can be used as a layer of a laminate, with other layers of the laminate providing abrasion resistance and mechanical strength. The meltblown material, and/or laminate including the meltblown material, can be used for gas/vapor filtering and/or adsorbing, and specifically can be used for disposable vacuum cleaner bags and the like.
Inventors
- 👤 Ronald W. Brooker
- 👤 Bernard Cohen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:16
CPC Classifications
B; B01; B01D; B01D39/00; B01D39/14; B01D39/16; B01D39/1607; B01D39/1623; D; D04; D04H; D04H1/00; D04H1/40; D04H1/54; D04H1/56; A; A61; A61F; A61F13/00; A61F13/15; A61F13/15577; A61F2013/15821; A61F2013/15934; A61F2013/15967; A61F13/53; A61F2013/530481; A61F2013/530489; A61F2013/530496; B01D2239/00; B01D2239/04; B01D2239/0407; B01D2239/06; B01D2239/0604; B01D2239/0618; B01D2239/0622; B01D2239/0627; B01D2239/064; B01D2239/065; B01D2239/0654; B01D2239/08; B01D2239/086; B01D2239/10; B01D2239/12; B01D2239/1233; B01D2239/1241; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1334; Y10T428/1345; Y10T428/1352; Y10T428/1362
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
106 words
A vacuum cleaner bag, formed from a substantially non-dusting nonwoven material, said material comprising: a web of meltblown fibers having a diameter of from less than about 1 micron to about 25 microns, said fibers comprising a blend of a polyolefin and from about 5% to about 30%, by weight, of an adhesive polymer selected from the group consisting of polybutylene and polyethylene acrylic acid; and up to about 35%, by weight, based on the weight of the nonwoven material, of unblocked active particles, ranging in size from about 50 to about 150 microns, adhered to the surface of said fibers and distributed throughout said web.
Claim 2
Dependent Claim
106 words
A vacuum cleaner bag, formed from a substantially non-dusting nonwoven material, said material comprising: a web of meltblown fibers having a diameter of from less than about 1 micron to about 25 microns, said fibers comprising a blend of a polyolefin and from about 5% to about 30%, by weight, of an adhesive polymer selected from the group consisting of polybutylene and polyethylene acrylic acid; and up to about 35%, by weight, based on the weight of the nonwoven material, of unblocked active particles, ranging in size from about 50 to about 150 microns, adhered to the surface of said fibers and distributed throughout said web.
Claim 3
Dependent Claim
34 words
The vacuum cleaner bag according to claim 1, wherein the web of meltblown fibers has pores which are sufficiently small such that dirt can be trapped within said bag while the air passes therethrough.
Claim 4
Dependent Claim
15 words
The vacuum cleaner bag according to claim 1, wherein said bag being a disposable bag.
Claim 5
Dependent Claim
13 words
The vacuum cleaner bag according to claim 1, wherein said polyolefin comprises polypropylene.
Claim 6
Dependent Claim
35 words
The vacuum cleaner bag according to claim 1, wherein said particles are selected from the group consisting of activated carbon, potassium permanganate, baking soda, clays, diatomaceous earth, and complexes of potassium permanganate with active alumina.
Claim 7
Dependent Claim
139 words
A vacuum cleaner bag, formed from a substantially non-dusting laminate, said laminate comprising: a nonwoven material including meltblown fibers having a diameter of from less than about 1 micron to about 25 microns, said fibers comprising a blend of a polyolefin and from about 5% to about 30%, by weight, of an adhesive polymer selected from the group consisting of polybutylene and polyethylene acrylic acid and up to about 35%, by weight, based on the weight of the nonwoven material, of unblocked active particles, ranging in size from about 50 to about 150 microns, adhered to the surface of said fibers and distributed throughout said web; and at least one reinforcing layer of a material that provides increased abrasion resistance and mechanical strength to the laminate as compared to the abrasion resistance and mechanical strength of the nonwoven material.
Claim 8
Dependent Claim
139 words
A vacuum cleaner bag, formed from a substantially non-dusting laminate, said laminate comprising: a nonwoven material including meltblown fibers having a diameter of from less than about 1 micron to about 25 microns, said fibers comprising a blend of a polyolefin and from about 5% to about 30%, by weight, of an adhesive polymer selected from the group consisting of polybutylene and polyethylene acrylic acid and up to about 35%, by weight, based on the weight of the nonwoven material, of unblocked active particles, ranging in size from about 50 to about 150 microns, adhered to the surface of said fibers and distributed throughout said web; and at least one reinforcing layer of a material that provides increased abrasion resistance and mechanical strength to the laminate as compared to the abrasion resistance and mechanical strength of the nonwoven material.
Claim 9
Dependent Claim
19 words
The vacuum cleaner bag according to claim 6, comprising at least two reinforcing layers which sandwich said nonwoven material.
Claim 10
Dependent Claim
17 words
The vacuum cleaner bag according to claim 6, wherein said reinforcing layer comprises a spunbonded sheet material.
Claim 11
Dependent Claim
21 words
The vacuum cleaner bag according to claim 6, wherein the reinforcing layer is bonded to the nonwoven material by ultrasonic bonding.
Claim 12
Dependent Claim
18 words
The vacuum cleaner bag according to claim 9, wherein 10% of the area of the laminate is bonded.
Claim 13
Dependent Claim
89 words
A vacuum cleaner bag, formed from a substantially non-dusting nonwoven material, said material comprising: a web of meltblown fibers comprising a bland of polypropylene and from about 5% to about 30%, by weight, of an adhesive polymer selected from the group consisting of polybutylene and polyethylene acrylic acid; and up to about 60%, by weight, based on the weight of the nonwoven material, of unblocked active particles, ranging in size from about 50 to about 150 microns, adhered to the surface of said fibers and distributed throughout said web.
Claim 14
Dependent Claim
89 words
A vacuum cleaner bag, formed from a substantially non-dusting nonwoven material, said material comprising: a web of meltblown fibers comprising a bland of polypropylene and from about 5% to about 30%, by weight, of an adhesive polymer selected from the group consisting of polybutylene and polyethylene acrylic acid; and up to about 60%, by weight, based on the weight of the nonwoven material, of unblocked active particles, ranging in size from about 50 to about 150 microns, adhered to the surface of said fibers and distributed throughout said web.
Claim 15
Dependent Claim
25 words
The vacuum cleaner bag of claim 11, wherein said meltblown fibers have a diameter of from less than about 1 micron to about 25 microns.
Claim 16
Dependent Claim
36 words
The vacuum cleaner bag according to claim 11, wherein said particles are selected from the group consisting of activated carbon, potassium permanganate and baking soda, clays, diatomaceous earth, and complexes of potassium permanganate with active alumina.
Claim 17
Dependent Claim
153 words
A vacuum cleaner bag, formed from a substantially non-dusting laminate, said laminate comprising: a nonwoven material including meltblown fibers having a diameter of from less than about 1 micron to about 25 microns, said fibers comprising a blend of a polyolefin and from about 5% to about 30%, by weight, of an adhesive polymer selected from the group consisting of polybutylene and polyethylene acrylic acid and up to about 60%, by weight, based on the weight of the nonwoven material, of unblocked active particles, ranging in size from about 50 to about 150 microns, adhered to the surface of said fibers and distributed throughout said web; and at least one reinforcing layer of a material that provides increased abrasion resistance and mechanical strength to the laminate as compared to the abrasion resistance and mechanical strength of the nonwoven material; and wherein about 10% of said reinforcing layer is bonded to said nonwoven material.
Claim 18
Dependent Claim
153 words
A vacuum cleaner bag, formed from a substantially non-dusting laminate, said laminate comprising: a nonwoven material including meltblown fibers having a diameter of from less than about 1 micron to about 25 microns, said fibers comprising a blend of a polyolefin and from about 5% to about 30%, by weight, of an adhesive polymer selected from the group consisting of polybutylene and polyethylene acrylic acid and up to about 60%, by weight, based on the weight of the nonwoven material, of unblocked active particles, ranging in size from about 50 to about 150 microns, adhered to the surface of said fibers and distributed throughout said web; and at least one reinforcing layer of a material that provides increased abrasion resistance and mechanical strength to the laminate as compared to the abrasion resistance and mechanical strength of the nonwoven material; and wherein about 10% of said reinforcing layer is bonded to said nonwoven material.
Claim 19
Dependent Claim
19 words
The vacuum cleaner bag according to claim 14, comprising at least two reinforcing layers which sandwich said nonwoven material.
Claim 20
Dependent Claim
17 words
The vacuum cleaner bag according to claim 14, wherein said reinforcing layer comprises a spunbonded sheet material.
Claim 21
Dependent Claim
21 words
The vacuum cleaner bag according to claim 14, wherein the reinforcing layer is bonded to the nonwoven material by ultrasonic bonding.
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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) | 1993-08-13 | 1994-02-12 | 1994-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-13 | 1998-02-12 | 1998-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-13 | 2002-02-12 | 2002-08-14 | $7700.00 | Window Closed / Lapsed |