US3887713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing flexible casings and the casings obtained therefrom
Assignee: Union Carbide Corp
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Filing: 1971-08-19
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Granted: 1975-06-03
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Expires: 1991-08-19
Abstract
Abstract Improved flexibility and pliancy and the ability to be readily opened and shirred are characteristics and properties imparted to regenerated cellulosic casings containing a moisture-proof-gas barrier coating by incorporating a softening and anti-block additive in the viscose solution before the viscose solution is extruded into tubular form and further processed.
Inventors
- 👤 Jerome Jordan Michae Rasmussen
- 👤 David Voo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:27
CPC Classifications
A; A22; A22C; A22C13/00; A22C13/0013; C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/101; C08K5/103; A22C2013/002; A22C2013/004; A22C2013/0096; C08K2201/00; C08K2201/008; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1324
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
139 words
A method for producing a regenerated cellulosic casing containing a moistureproof-gas barrier coating, said casing exhibiting improved flexibility and antiblock characteristics, the method including the steps of: a. incorporating into a viscose solution a softening-antiblock additive in an amount of from about 2.5 to 14 percent by weight based upon the dry weight of the cellulose in the viscose solution, said softening-antiblock additive being a fully esterified fatty acid ester of a polyhydric alcohol added to said viscose solution in an aqueous emulsion thereof; b. extruding the viscose solution containing said softening-antiblock additive to form a tubular configuration; c. coagulating and regenerating the cellulose in the tubular configuration until a tubular cellulosic casing is obtained having the softening-antiblock additive incorporated in the wall thereof; and, d. applying a moistureproof-gas barrier coating to the tubular casing containing said softening-antiblock additive.
Claim 2
Independent Claim
139 words
A method for producing a regenerated cellulosic casing containing a moistureproof-gas barrier coating, said casing exhibiting improved flexibility and antiblock characteristics, the method including the steps of: a. incorporating into a viscose solution a softening-antiblock additive in an amount of from about 2.5 to 14 percent by weight based upon the dry weight of the cellulose in the viscose solution, said softening-antiblock additive being a fully esterified fatty acid ester of a polyhydric alcohol added to said viscose solution in an aqueous emulsion thereof; b. extruding the viscose solution containing said softening-antiblock additive to form a tubular configuration; c. coagulating and regenerating the cellulose in the tubular configuration until a tubular cellulosic casing is obtained having the softening-antiblock additive incorporated in the wall thereof; and, d. applying a moistureproof-gas barrier coating to the tubular casing containing said softening-antiblock additive.
Claim 3
Independent Claim
137 words
A METHOD FOR PRODUCING A REGENERATED CELLULOSIC CASING CONTAINING A MOISTUREPROOF-GAS BARRIER COATING, SAID CASING EXHIBITING IMPROVED FLEXIBILITY AND ANITBLOCK CHARACTERISTICS, THE METHOD INCLUDING THE STEPS OF: A. INCORPORATING INTO A VISCOSE SOLUTION A SOFTENINGANTIBLOCK ADDITIVE IN AN AMOUNT OF FROMABOUT 2.5 TO 14 PERCENT BY WEIGHT BASED UPON THE DRY WEIGHT OF THE CELLULOSE IN THE VISCOSE SOLUTION, SAID SOFTENING-ANTIBLOCK ADDITIVE BEING FULLY ESTERIFIED FATTY ACID ESTER OF A POLYHYDRIC ALCOHOL ADDED TO SAID VISCOSE SOLUTION IN AN AQUEOUS EMULSION THEREOF; B. EXTRUDING THE VISCOSE SOLUTION CONTAINING SAID SOFTENINGANTIBLOCK ADDITIVE TO FORM A TUBULAR CONFIGURATION; C. COAGULATING AND REGENERATING THE CELLULOSE IN THE TUBULAR CONFUGURATION UNTIL A TUBULAR CELLULOIC CASING IS OBTAINED HAVING THE SOFTENING-ANTIBLOCK ADDITIVE INCORPORATED IN THE WALL THEREOF; AND, D. APLYING A MOISTUREPROOF-GAS BARRIER COATING TO THE TUBULAR CASING CONTAINING SAID SOFTENING-ANTIBLOCK ADDITIVE.
Claim 4
Independent Claim
137 words
A METHOD FOR PRODUCING A REGENERATED CELLULOSIC CASING CONTAINING A MOISTUREPROOF-GAS BARRIER COATING, SAID CASING EXHIBITING IMPROVED FLEXIBILITY AND ANITBLOCK CHARACTERISTICS, THE METHOD INCLUDING THE STEPS OF: A. INCORPORATING INTO A VISCOSE SOLUTION A SOFTENINGANTIBLOCK ADDITIVE IN AN AMOUNT OF FROMABOUT 2.5 TO 14 PERCENT BY WEIGHT BASED UPON THE DRY WEIGHT OF THE CELLULOSE IN THE VISCOSE SOLUTION, SAID SOFTENING-ANTIBLOCK ADDITIVE BEING FULLY ESTERIFIED FATTY ACID ESTER OF A POLYHYDRIC ALCOHOL ADDED TO SAID VISCOSE SOLUTION IN AN AQUEOUS EMULSION THEREOF; B. EXTRUDING THE VISCOSE SOLUTION CONTAINING SAID SOFTENINGANTIBLOCK ADDITIVE TO FORM A TUBULAR CONFIGURATION; C. COAGULATING AND REGENERATING THE CELLULOSE IN THE TUBULAR CONFUGURATION UNTIL A TUBULAR CELLULOIC CASING IS OBTAINED HAVING THE SOFTENING-ANTIBLOCK ADDITIVE INCORPORATED IN THE WALL THEREOF; AND, D. APLYING A MOISTUREPROOF-GAS BARRIER COATING TO THE TUBULAR CASING CONTAINING SAID SOFTENING-ANTIBLOCK ADDITIVE.
Claim 5
Dependent Claim
17 words
The method of claim 1 wherein the fatty acid ester is a naturally occurring fat or oil.
Claim 6
Dependent Claim
37 words
The method of claim 1 wherein the amount of softening-antiblock additive incorporated into the viscose solution is from about 2.5 to 7.5 percent by weight based upon the dry weight of the cellulose in the viscose solution.
Claim 7
Dependent Claim
19 words
The method of claim 1 wherein the moistureproof-gas barrier coating is applied to the inner surface of the casing.
Claim 8
Dependent Claim
19 words
The method of claim 1 wherein the moistureproof-gas barrier coating is applied to the outer surface of the casing.
Claim 9
Dependent Claim
21 words
The method of claim 1 wherein the moistureproof-gas barrier coating is applied to the inner and outer surface of the casing.
Claim 10
Dependent Claim
39 words
The method of claim 1 wherein the moistureproof-gas barrier coating is applied to one surface of the casing and the casing is turned inside out such that the moistureproof-gas barrier coating is on the opposite surface of the casing.
Claim 11
Dependent Claim
23 words
The method of claim 1 which includes embedding a fibrous web in the cellulose such that a tubular, fibrous cellulosic casing is obtained.
Claim 12
Dependent Claim
13 words
The method of claim 2 wherein the fatty acid ester is castor oil.
Claim 13
Dependent Claim
77 words
A regenerated cellulosic casing having a moistureproof-gas barrier coating, said casing being characterized in that it has between about 2.5 percent and 14 percent by weight based on the dry weight of cellulose of a fully esterified fatty acid ester of a polyhydric alcohol softening-antiblock additive homogeneously dispersed and incorporated in its wall such that said casing exhibits improved flexibility, is non-blocking, and can be shirred and then stuffed and filled with a product without being wetted.
Claim 14
Dependent Claim
77 words
A regenerated cellulosic casing having a moistureproof-gas barrier coating, said casing being characterized in that it has between about 2.5 percent and 14 percent by weight based on the dry weight of cellulose of a fully esterified fatty acid ester of a polyhydric alcohol softening-antiblock additive homogeneously dispersed and incorporated in its wall such that said casing exhibits improved flexibility, is non-blocking, and can be shirred and then stuffed and filled with a product without being wetted.
Claim 15
Dependent Claim
36 words
The cAsing of claim 10 wherein the softening-antiblock additive incorporated in the wall of said casing is from about 2.5 to 7.5 percent by weight based upon the dry weight of the cellulose in said casing.
Claim 16
Dependent Claim
17 words
The casing of claim 10 wherein the fatty acid ester is a naturally occurring fat or oil.
Claim 17
Dependent Claim
15 words
The casing of claim 10 wherein the moistureproof-gas barrier coating is on its inner surface.
Claim 18
Dependent Claim
15 words
The casing of claim 10 wherein the moistureproof-gas barrier coating is on its outer surface.
Claim 19
Dependent Claim
17 words
The casing of claim 10 wherein the moistureproof-gas barrier coating is on its inner and outer surface.
Claim 20
Dependent Claim
12 words
The casing of claim 10 wherein a fibrous web is embedded therein.
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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) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |