US3898348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Food casing and method of preparing same
Assignee: Viskase Corp
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Filing: 1973-11-12
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Granted: 1975-08-05
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Expires: 1993-11-12
Abstract
Abstract Tubular cellulosic food casings having a coating comprising a water-soluble cellulose ether over the internal surface thereof exhibit improved peelability characteristics from food products encased and processed therein.
Inventors
- 👤 Herman Shin-Gee Chiu
- 👤 David Voo
- 👤 John Joseph Standard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:37
CPC Classifications
A; A22; A22C; A22C13/00; A22C13/0013; C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J2301/00; C08J2401/00
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
137 words
A TUBULAR CELLULOSIC CASING HAVING A COATING OVER THE INTERNAL SURFACE THEREOF, SAID COATING COMPRISING A HOMOGENEOUS ADMIXTURE OF AT LEAST TWO COMPONENTS, ONE OF SAID COMPONENTS BEING A WATER-SOLUBLE CELLULOSE ETHER AND A SECOND COMPONENT BEING A MEMBER SELECTED FROM THE GROUP CONSITING OF ANIMAL AND VEGETABLE OILS, MINERAL OIL, SILICON OILS AND WATER SOLUBLE ALKYLENE OXIDE ADDUCTS OF FATTY ACID PARTIAL ESTERS, SAID CELLULOSE ETHER COMPONENT OF SAID COATING BEING PRESENT IN AN AMOUNT OF AT LEAST ABOUT 0.001 MG/IN2 OF INTERNAL CASING SURFACE AND SAID SECOND COMPONENT BEING PRESENT IN SAID COATING IN AN AMOUNT OF AT LEAST 0.1 TIME THE WEIGHT OF SAID FIRST COMPONENT AND NOT MORE THAN ABOUT 0.5 MG/IN2 OF CASING SURFACE, SAID CASING BEING SUITABLE FOR STUFFING WITH FOOD PRODUCTS AND BEING READILY PEELABLE FROM FOOD PRODUCTS POCESSED THEREIN.
Claim 2
Dependent Claim
137 words
A TUBULAR CELLULOSIC CASING HAVING A COATING OVER THE INTERNAL SURFACE THEREOF, SAID COATING COMPRISING A HOMOGENEOUS ADMIXTURE OF AT LEAST TWO COMPONENTS, ONE OF SAID COMPONENTS BEING A WATER-SOLUBLE CELLULOSE ETHER AND A SECOND COMPONENT BEING A MEMBER SELECTED FROM THE GROUP CONSITING OF ANIMAL AND VEGETABLE OILS, MINERAL OIL, SILICON OILS AND WATER SOLUBLE ALKYLENE OXIDE ADDUCTS OF FATTY ACID PARTIAL ESTERS, SAID CELLULOSE ETHER COMPONENT OF SAID COATING BEING PRESENT IN AN AMOUNT OF AT LEAST ABOUT 0.001 MG/IN2 OF INTERNAL CASING SURFACE AND SAID SECOND COMPONENT BEING PRESENT IN SAID COATING IN AN AMOUNT OF AT LEAST 0.1 TIME THE WEIGHT OF SAID FIRST COMPONENT AND NOT MORE THAN ABOUT 0.5 MG/IN2 OF CASING SURFACE, SAID CASING BEING SUITABLE FOR STUFFING WITH FOOD PRODUCTS AND BEING READILY PEELABLE FROM FOOD PRODUCTS POCESSED THEREIN.
Claim 3
Dependent Claim
30 words
The casing of claim 1 wherein said cellulose ether component of said coating is selected from the group consisting of methylcellulose, hydroxyethylcellulose, carboxymethylcellulose, carboxymethyl hydroxyethylcellulose, hydroxypropyl cellulose and hydroxypropyl methylcellulose.
Claim 4
Dependent Claim
13 words
The casing of claim 2 wherein said water-soluble cellulose ether component is carboxymethylcellulose.
Claim 5
Dependent Claim
13 words
The casing of claim 2 wherein said water-soluble cellUlose ether component is methylcellulose.
Claim 6
Dependent Claim
14 words
The casing of claim 2 wherein said water-soluble cellulose ether component is carboxymethyl hydroxyethylcellulose.
Claim 7
Dependent Claim
60 words
The casing of claim 1 wherein said second component is present in said coating in an amount which is not more than about 15 times the weight of said cellulose ether component, but whereby said second component is present on the internal surface of said casing in an amount which is not more than about 0.5 mg/in2 of casing surface.
Claim 8
Dependent Claim
29 words
The casing of claim 1 wherein said cellulose ether component of said coating is present in an amount of between about 0.002 mg/in2 and .07 mg/in2 of casing surface.
Claim 9
Dependent Claim
38 words
The casing of claim 1 wherein said second component is present in said coating in the ratio by weight of said second component to said cellulose ether component of between about 0.5 to 1 and 5.0 to 1.
Claim 10
Dependent Claim
23 words
The casing of claim 1 wherein said second component of said coating is a water-soluble ethylene oxide adduct of fatty acid partial esters.
Claim 11
Dependent Claim
24 words
The casing of claim 9 wherein said second component is present in an amount of not more than about 0.05 mg/in2 of casing surface.
Claim 12
Independent Claim
120 words
A method of preparing tubular cellulosic food casings that are readily peelable from food products encased therein which includes the step of applying not more than about 5 mg/in2 of a homogeneous aqueous coating composition and less than 3 mg/in2 of water while applying at least about 0.001 mg/in2 of cellulose ether to the internal surface of a tubular cellulosic food casing, said aqueous coating composition containing at least about 0.05% by weight of a water-soluble cellulose ether and between about 0.1 and 15 times the amount of said cellulose ether of a second component selected from the group consisting of animal and vegetable oils, mineral oil, silicone oils and a water-soluble alkylene oxide adduct of fatty acid partial esters.
Claim 13
Independent Claim
120 words
A method of preparing tubular cellulosic food casings that are readily peelable from food products encased therein which includes the step of applying not more than about 5 mg/in2 of a homogeneous aqueous coating composition and less than 3 mg/in2 of water while applying at least about 0.001 mg/in2 of cellulose ether to the internal surface of a tubular cellulosic food casing, said aqueous coating composition containing at least about 0.05% by weight of a water-soluble cellulose ether and between about 0.1 and 15 times the amount of said cellulose ether of a second component selected from the group consisting of animal and vegetable oils, mineral oil, silicone oils and a water-soluble alkylene oxide adduct of fatty acid partial esters.
Claim 14
Dependent Claim
26 words
The method of claim 11 wherein between about 0.002 mg/in2 and 0.07 mg/in2 of said cellulose ether is applied to the internal surface of said casing.
Claim 15
Dependent Claim
50 words
The method of claim 11 wherein the aqueous coating composition contains between about 10% and 90% by weight of a polyol having from 3-6 carbon atoms and at least 2 hydroxyl groups, said polyol being present in the weight ratio of polyol to water of at least 0.15 to 1.
Claim 16
Dependent Claim
31 words
The method of claim 13 wherein the weight ratio of polyol to water in said coating composition is in the range of between about 0.4 to 1 and 2.5 to 1.
Claim 17
Dependent Claim
26 words
The method of claim 11 wherein said water-soluble cellulose ether is selected from the group consisting of methylcellulose, hydroxyethylcellulose, carboxymethylcellulose, carboxymethyl hydroxyethylcellulose, hydroxypropylcellulose and hydroxypropyl methylcellulose.
Claim 18
Dependent Claim
105 words
An improved method of preparing a processed food product, the improvement which includes the step of stuffing a food emulsion into a tubular cellulosic casing having a coating over the internal surface thereof comprising a homogeneous admixture of between about 0.002 mg/in2 and 0.07 mg/in2 of a water-soluble cellulose ether and a second component selected from the group consisting of animal and vegetable oils, mineral oil, silicone oil, and water soluble alkylene oxide adducts of fatty acid partial esters, said second component being present in an amount of at least 0.1 times the weight of said cellulose ether and not more than about 0.5 mg/in2.
Claim 19
Dependent Claim
105 words
An improved method of preparing a processed food product, the improvement which includes the step of stuffing a food emulsion into a tubular cellulosic casing having a coating over the internal surface thereof comprising a homogeneous admixture of between about 0.002 mg/in2 and 0.07 mg/in2 of a water-soluble cellulose ether and a second component selected from the group consisting of animal and vegetable oils, mineral oil, silicone oil, and water soluble alkylene oxide adducts of fatty acid partial esters, said second component being present in an amount of at least 0.1 times the weight of said cellulose ether and not more than about 0.5 mg/in2.
References Cited (Backward Citations)
US3451827A
Cited
US3558331A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-04 | 1979-02-03 | 1979-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-04 | 1983-02-03 | 1983-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-04 | 1987-02-03 | 1987-08-05 | $7700.00 | Window Closed / Lapsed |