US3981046A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for production of shirred moisturized food casings
Assignee: Viskase Corp
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Filing: 1972-05-05
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Granted: 1976-09-21
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Expires: 1992-05-05
Abstract
Abstract Food casings, particularly cellulosic sausage casings, are moisturized during the conventional shirring operation by applying to the interior of the casing stock prior to shirring an aqueous solution of humectant, the solution containing sufficient humectant to retard excessive imbibition of water by the casing.
Inventors
- 👤 Herman Chiu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:58
CPC Classifications
A; A22; A22C; A22C13/00; A22C13/0013; A22C13/02
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
91 words
A process for producing shirred cellulosic casing having a predetermined uniform moisture content which comprises a. providing a supply of cellulosic casing stock to be moisturized; b. advancing said cellulosic casing about a hollow mandrel to and through a shirring apparatus; c. applying to the interior surface of casing stock advancing over the hollow mandrel and prior to advancing through the shirring zone of a shirring apparatus a uniform predetermined rate and quantity of an aqueous solution containing at least about 25% humectant; and d. shirring said moisturized casing stock thereafter.
Claim 2
Dependent Claim
91 words
A process for producing shirred cellulosic casing having a predetermined uniform moisture content which comprises a. providing a supply of cellulosic casing stock to be moisturized; b. advancing said cellulosic casing about a hollow mandrel to and through a shirring apparatus; c. applying to the interior surface of casing stock advancing over the hollow mandrel and prior to advancing through the shirring zone of a shirring apparatus a uniform predetermined rate and quantity of an aqueous solution containing at least about 25% humectant; and d. shirring said moisturized casing stock thereafter.
Claim 3
Dependent Claim
45 words
A process as defined by claim 1 in which said solution is applied at a rate of 0.4 milligram of water in said solution to each square inch of interior wall of casing stock for each 1% rise in water content of said casing stock.
Claim 4
Dependent Claim
14 words
A process as defined by claim 1 in which said humectant is a polyol.
Claim 5
Dependent Claim
14 words
A process as defined by claim 3 in which said polyol is propylene glycol.
Claim 6
Dependent Claim
16 words
A process as defined by claim 4 in which said solution contains about 40% propylene glycol.
Claim 7
Dependent Claim
42 words
A process as defined by claim 5 in which said solution is applied to said casing stock at an average rate of 1 milligram per square inch of interior casing wall for each 1% rise in water content of said casing stock.
Claim 8
Dependent Claim
13 words
A process as defined by claim 3 in which said polyol is glycerine.
Claim 9
Dependent Claim
14 words
A process as defined by claim 1 in which said humectant is a polysaccharide.
Claim 10
Dependent Claim
13 words
A process as defined by claim 8 in which said polysaccharide is sucrose.
Claim 11
Dependent Claim
15 words
A process as defined by claim 1 in which said humectant is a polyol ester.
Claim 12
Dependent Claim
86 words
A shirred stick of cellulosic food casing comprising a shirred cellulosic food casing having a moisture content between about 14 and 17% by weight of water and containing a mixture of humectants comprising glycerine and at least one humectant other than glycerine, the amount of glycerine present in said casing being suitable to plasticize the cellulosic food casing and a humectant other than glycerine being present in said casing in an amount of at least about 0.3 mg humectant per sq. inch of internal casing surface.
Claim 13
Dependent Claim
86 words
A shirred stick of cellulosic food casing comprising a shirred cellulosic food casing having a moisture content between about 14 and 17% by weight of water and containing a mixture of humectants comprising glycerine and at least one humectant other than glycerine, the amount of glycerine present in said casing being suitable to plasticize the cellulosic food casing and a humectant other than glycerine being present in said casing in an amount of at least about 0.3 mg humectant per sq. inch of internal casing surface.
Claim 14
Dependent Claim
35 words
A shirred casing stick as defined in claim 11 wherein the humectant other than glycerine is a humectant selected from the group consisting of a polyol, esters of polyols, polysaccharides and mixtures of the same.
Claim 15
Dependent Claim
35 words
A shirred casing stick as defined in claim 11 wherein the humectant other than glycerine is a polyol selected from the group consisting of triethylene glycol, propylene glycol, polyethylene glycol and mixtures of the same.
Claim 16
Dependent Claim
15 words
A shirred casing stick as defined in claim 13 wherein said humectant is propylene glycol.
Claim 17
Dependent Claim
19 words
A shirred casing stick as defined in claim 11 wherein the humectant other than glycerine is a polyol ester.
Claim 18
Dependent Claim
16 words
A shirred casing stick as defined in claim 15 wherein said polyol ester is glycerol diacetate.
Claim 19
Dependent Claim
18 words
A shirred casing stick as defined in claim 11 wherein the humectant other than glycerine is a polysaccharide.
Claim 20
Dependent Claim
14 words
A shirred casing stick as defined in claim 17 wherein said polysaccharide is sucrose.
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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) | 1979-09-21 | 1980-03-22 | 1980-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-21 | 1984-03-22 | 1984-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-21 | 1988-03-22 | 1988-09-21 | $7700.00 | Window Closed / Lapsed |