US4355066A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spot-bonded absorbent composite towel material having 60% or more of the surface area unbonded
Assignee: Fiber Technology Corp
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Filing: 1980-12-08
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Granted: 1982-10-19
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Expires: 2000-12-08
Abstract
Abstract An absorbent hydrophilic and oleophilic multipurpose composite towel material having an inner absorbent layer of cellulosic material and outer layers of microfibrous polyolefin material on opposite sides of the inner layer, the outer layers being spot fusion bonded through the inner layer to produce a towel having exceptionally high void volume for improved absorbency.
Inventors
- 👤 Nicholas S. Newman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:34
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; A; A47; A47K; A47K10/00; A47K10/16; B32B17/00; B32B17/02; B32B27/00; B32B27/32; D; D04; D04H; D04H1/00; D04H1/40; D04H1/42; D04H1/425; D04H1/54; D04H1/559; D04H1/56; D04H1/58; D04H1/64; Y; Y10; Y10S; Y10S428/00; Y10S428/903; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331; Y10T428/24802; Y10T428/24826; Y10T428/26; Y10T428/269
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
89 words
An absorbent hydrophilic and oleophilic multipurpose composite towel material comprising: an inner hydrophilic absorbent layer of cellulosic material; and, outer layers of microfibrous polyolefin material on opposite sides of said inner layer; said outer layers being fusion bonded through said inner layer in discreet spot areas said spot bonded areas leaving the unbonded areas more than 60% of the whole and as large as possible consistant with requirements of material integrity, to produce a bonded composite material having low density and exceptionally high void volume for improved liquid absorbency.
Claim 2
Dependent Claim
89 words
An absorbent hydrophilic and oleophilic multipurpose composite towel material comprising: an inner hydrophilic absorbent layer of cellulosic material; and, outer layers of microfibrous polyolefin material on opposite sides of said inner layer; said outer layers being fusion bonded through said inner layer in discreet spot areas said spot bonded areas leaving the unbonded areas more than 60% of the whole and as large as possible consistant with requirements of material integrity, to produce a bonded composite material having low density and exceptionally high void volume for improved liquid absorbency.
Claim 3
Dependent Claim
16 words
The composite material of claim 1, further including a reinforcing layer positioned within said cellulosic material.
Claim 4
Dependent Claim
26 words
The composite material of claim 1 or 2, wherein: said spot bonding covers between 5 and 25% of the total surface area of said composite material.
Claim 5
Dependent Claim
31 words
The composite material of claim 1 wherein said outer surfaces are formed from a roll formed web treated with a latex emulsion to provide an abrasion resistant coating thereon facilitating fabrication.
Claim 6
Dependent Claim
22 words
The composite material of claim 1, wherein said cellulosic material contains between 5 and 30 percent of thermoplastic bonding in powder form.
Claim 7
Dependent Claim
125 words
An absorbent hydrophilic and oleophilic multipurpose composite towel material comprising: an inner hyrophilic absorbent layer of cellulosic material containing between about 5 to 30 percent of thermoplastic bonding powder therein a reinforcing layer of lightweight fabric material positioned within said cellulosic material outer layers of microfibrous polyolefin material composed of melt-blown microfibers having diameters in the range of about 2 to about 20 microns on opposite sides of said inner layer and said reinforcing layer, said composite towel material being fusion bonded in spot areas through said inner layer and said reinforcing layer to leave between 75 and 95% of the area of said towel material unbonded, to produce a bonded composite material having low density and exceptionally high void volume for improved liquid absorbency.
Claim 8
Dependent Claim
125 words
An absorbent hydrophilic and oleophilic multipurpose composite towel material comprising: an inner hyrophilic absorbent layer of cellulosic material containing between about 5 to 30 percent of thermoplastic bonding powder therein a reinforcing layer of lightweight fabric material positioned within said cellulosic material outer layers of microfibrous polyolefin material composed of melt-blown microfibers having diameters in the range of about 2 to about 20 microns on opposite sides of said inner layer and said reinforcing layer, said composite towel material being fusion bonded in spot areas through said inner layer and said reinforcing layer to leave between 75 and 95% of the area of said towel material unbonded, to produce a bonded composite material having low density and exceptionally high void volume for improved liquid absorbency.
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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) | 1985-10-18 | 1986-04-19 | 1986-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-18 | 1990-04-19 | 1990-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-18 | 1994-04-19 | 1994-10-19 | $7700.00 | Window Closed / Lapsed |