Patent US4933129A successfully refreshed from Google Patents.
US4933129A
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Process for producing nonwoven insulating webs
Assignee: ULTRAFIBRE Inc GRANVILLE COUNTY OF LICKING STATE OHIO A CORP OF OHIO
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Filing: 1988-07-25
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Granted: 1990-06-12
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Expires: 2008-07-25
Abstract
Abstract A process for producing high performance, metallic coated staple fibers and nonwoven insulating webs made up of such fibers includes providing a nonwoven substantially two-dimensional web of fibers wherein at least a portion of 50 percent of the fibers are exposed to one or the other side of the web. This web is metallized with a low emissivity metal(s) and/or alloy(s) to produce a coated web wherein at least 50 percent of the surface area of the web fibers are coated with metal and or alloy. The coated web is shredded into individual, staple fibers which are thereafter united to produce a nonwoven, lofty three-dimensional insulating web having a density of between about 0.02 to 2 pounds per cubic foot.
Inventors
- 👤 William Huykman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:24
CPC Classifications
D; D06; D06M; D06M11/00; D06M11/83; D04; D04H; D04H1/00; D04H1/40; D04H1/42; D04H1/4209; D04H1/4234; D04H1/4326; D04H1/435; D04H1/4382; D04H1/43835; D04H1/4391; D04H1/43918; D04H1/43825; D04H1/43838; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2904; Y10T428/2907; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2958; Y10T442/00; Y10T442/60; Y10T442/654; Y10T442/655; Y10T442/657
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
136 words
A method of manufacturing a lofty insulating web comprising: (a) providing a substantially two-dimensional non-woven web of fibers composed of glass, synthetic polymers or mixtures thereof, said web having a thickness such that at least a portion of 50 percent of the fibers is exposed to one or the other side of the web; (b) vacuum metallizing the web with a metal, metal alloy, or mixtures thereof having an emissivity less than 0.1 to produce a web wherein at least 50 percent of the surface area of the web fibers is coated with a metal or metal alloy; (c) shredding the metallized web into individual, coated staple fibers; and (d) uniting the coated staple fibers to form a lofty three-dimensional web or batt having a density of between about 0.02 to 2 pounds per cubic foot.
Claim 2
Independent Claim
136 words
A method of manufacturing a lofty insulating web comprising: (a) providing a substantially two-dimensional non-woven web of fibers composed of glass, synthetic polymers or mixtures thereof, said web having a thickness such that at least a portion of 50 percent of the fibers is exposed to one or the other side of the web; (b) vacuum metallizing the web with a metal, metal alloy, or mixtures thereof having an emissivity less than 0.1 to produce a web wherein at least 50 percent of the surface area of the web fibers is coated with a metal or metal alloy; (c) shredding the metallized web into individual, coated staple fibers; and (d) uniting the coated staple fibers to form a lofty three-dimensional web or batt having a density of between about 0.02 to 2 pounds per cubic foot.
Claim 3
Dependent Claim
33 words
A method as defined in claim 1, wherein the area of weight of said substantially two dimensional web prior to metallization is in the range of 0.1 to 5 ounces per square yard.
Claim 4
Dependent Claim
23 words
A method as defined in claim 2, wherein said area weight is in the range of 0.25 to 1 ounce per square yard.
Claim 5
Dependent Claim
30 words
A method as defined in claim 3, wherein the fibers of said substantially two-dimensional web are staple fibers and prior to metallization have a diameter no greater than 50 microns.
Claim 6
Dependent Claim
31 words
A method as defined in claim 3, wherein the fibers of said substantially two-dimensional web are continuous filament fibers and prior to metallization have a diameter no greater than 50 microns.
Claim 7
Dependent Claim
23 words
A method as defined in claim 4, wherein said staple fibers have a diameter in the range of from 1 to 40 microns.
Claim 8
Dependent Claim
29 words
A method as defined in claim 6, wherein said staple fibers are composed of a polyester and have a diameter in the range of from 7 to 23 microns.
Claim 9
Dependent Claim
38 words
A method as defined in claim 7, wherein said staple fibers are vacuum metallized with aluminum and the area weight of the resulting metallized web is in the range of from 10 to 25 grams per square yard.
Claim 10
Dependent Claim
28 words
A method as defined in claim 8, wherein said area weight of the metallized web is in the range of from 12 to 17 grams per square yard.
Claim 11
Dependent Claim
27 words
A method as defined in claim 1, wherein said fibers are composed of a synthetic resin selected from the group consisting of polyesters, nylons, acrylics and polyolefins.
Claim 12
Dependent Claim
29 words
A method as defined in claim 1, wherein said substantially two-dimensional web is vacuum metallized with a metal or metal alloy having an emissivity not appreciably greater than 0.04.
Claim 13
Dependent Claim
27 words
A method as defined in claim 1, wherein the area weight of said metallized web is in the range of 10 to 25 grams per square yard.
Claim 14
Dependent Claim
17 words
A method as defined in claim 1, wherein said fibers of said substantially two-dimensional web are crimped.
Claim 15
Dependent Claim
20 words
A method as defined in claim 1, wherein a portion of said fibers of said substantially two-dimensional web are crimped.
Claim 16
Independent Claim
137 words
A method of manufacturing a lofty insulating web comprising: (a) providing a substantially two-dimensional non-woven web of fibers composed of glass, synthetic polymers or mixtures thereof, said web having a thickness such that at least 50 percent of the surface area of the fibers is exposed to one or the other side of the web; (b) vacuum metallizing the web with a low emissivity metal selected from the group consisting of aluminum, gold, silver or mixtures thereof to produce a web wherein at least 50 percent of the surface area of the web fibers is coated with metal; (c) shredding the metallized web into individual, coated staple fibers; and (d) uniting the coated staple fibers to form a lofty three dimensional web or batt having a density of between about 0.02 to 2 pounds per cubic foot.
Claim 17
Independent Claim
137 words
A method of manufacturing a lofty insulating web comprising: (a) providing a substantially two-dimensional non-woven web of fibers composed of glass, synthetic polymers or mixtures thereof, said web having a thickness such that at least 50 percent of the surface area of the fibers is exposed to one or the other side of the web; (b) vacuum metallizing the web with a low emissivity metal selected from the group consisting of aluminum, gold, silver or mixtures thereof to produce a web wherein at least 50 percent of the surface area of the web fibers is coated with metal; (c) shredding the metallized web into individual, coated staple fibers; and (d) uniting the coated staple fibers to form a lofty three dimensional web or batt having a density of between about 0.02 to 2 pounds per cubic foot.
Claim 18
Dependent Claim
17 words
A method as defined in claim 15, wherein said fibers of said two-dimensional web are staple fibers.
Claim 19
Dependent Claim
27 words
A method as defined in claim 16, wherein said staple fibers in said two-dimensional web are composed of polyester and said polyester fibers are metallized with aluminum.
Claim 20
Dependent Claim
20 words
A method as defined in claim 1, including uniting said shredded coating staple fibers by carding, garnetting or Rando-Webber techniques.
Claim 21
Dependent Claim
25 words
A method as defined in claim 1, including blending said shredded coating staple fibers with a quantity of uncoated fibers prior to said uniting step.
Claim 22
Dependent Claim
24 words
A method as defined in claim 1, wherein said web or batt has a density between about 0.2 to 0.8 pounds per cubic foot.
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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) | 1993-06-11 | 1993-12-11 | 1994-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-11 | 1997-12-11 | 1998-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-11 | 2001-12-11 | 2002-06-12 | $7700.00 | Window Closed / Lapsed |