US4865755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for incorporating powdered detergent ingredients into a meltblown laundry detergent sheet
Assignee: Kimberly Clark Worldwide Inc
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Filing: 1988-05-03
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Granted: 1989-09-12
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Expires: 2008-05-03
Abstract
Abstract A method for making a meltblown liquid laundry detergent sheet provides increased detergent solids by incorporating powdered liquid detergent ingredients into the meltblown web during the formation of the meltblown web. Thereafter the balance of the liquid detergent formulation is incorporated into the web by saturating the web with a solution containing the balance of the liquid detergent ingredients and drying.
Inventors
- 👤 William D. Lloyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:43
CPC Classifications
C; C11; C11D; C11D17/00; C11D17/04; C11D17/041; C11D17/046; C11D11/00; C11D17/042; C11D17/044
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
88 words
A method for making a laundry detergent sheet comprising: (a) forming a meltblown web by meltblowing a thermoplastic polymer to form fibers, which are deposited onto a travelling forming wire; (b) interspersing powdered etergent ingredients among the meltblown fibers before the meltblown fibers are completely solidified; (c) solidifying the meltblown fibers, whereby the powdered detergent ingredients become adhered thereto; (d) saturating the meltblown web with the balance of the detergent ingredients; and (e) drying the saturated web to a water content of about 10 weight percent or less.
Claim 2
Independent Claim
88 words
A method for making a laundry detergent sheet comprising: (a) forming a meltblown web by meltblowing a thermoplastic polymer to form fibers, which are deposited onto a travelling forming wire; (b) interspersing powdered etergent ingredients among the meltblown fibers before the meltblown fibers are completely solidified; (c) solidifying the meltblown fibers, whereby the powdered detergent ingredients become adhered thereto; (d) saturating the meltblown web with the balance of the detergent ingredients; and (e) drying the saturated web to a water content of about 10 weight percent or less.
Claim 3
Dependent Claim
35 words
The method of claim 1 wherein the meltblown web is formed with a plurality of meltblowing banks and wherein the powdered detergent ingredients are interspersed among the meltblown fibers formed by the central meltblowing banks.
Claim 4
Dependent Claim
40 words
The method of claim 1 wherein the powdered liquid detergent ingredients are interspersed with the unsolidified meltblown fibers by metering the powdered ingredients into an airstream which impinges upon the meltblown fibers before they are deposited onto the forming wire.
Claim 5
Dependent Claim
11 words
The method of claim 3 wherein the impinging airstream contains fibers.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-11 | 1993-03-13 | 1993-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-11 | 1997-03-13 | 1997-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-11 | 2001-03-13 | 2001-09-12 | $7700.00 | Window Closed / Lapsed |