Patent US3607328A successfully refreshed from Google Patents.
US3607328A
Expired / Lapsed
US
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Production of delustered cellulosic sausage casings
Assignee: Continental Group Inc
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Filing: 1968-09-30
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Granted: 1971-09-21
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Expires: 1988-09-30
Abstract
Abstract Tubular regenerated cellulose films suitable for use as sausage casings are prepared in a highly delustered form by incorporating a mixture of two or more delustering agents having a refractive index substantially different from each other and from regenerated cellulose in a viscose solution prior to extrusion. The mixture of delustering materials is added to the viscose in solution in an inert cosolvent which is soluble in the viscose solution. The addition of the solution of mixed delustering materials produces a delusterant fog upon extrusion of the viscose and formation of a regenerated cellulose film or tube therefrom.
Inventors
- 👤 Henry J Rose
- 👤 Albin F Turbak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:54
CPC Classifications
A; A22; A22C; A22C13/00; A22C13/0013; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1324
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
103 words
A method of preparing a delustered film of regenerated cellulose which comprises, a. preparing a solution of at least two mutually insoluble delustering materials, having a refractive index substantially different from each other and from regenerated cellulose, in an inert cosolvent which is soluble in viscose, b. dispersing said solution of delustering materials into viscose, c. extruding the resulting dispersion to form a film, and d. coagulating and regenerating said extruded film to produce a delusterant fog throughout said extruded film comprising a dispersion of fine opalescent particles or droplets of said delusterant materials of colloidal size and comprising at least two phases.
Claim 2
Independent Claim
103 words
A method of preparing a delustered film of regenerated cellulose which comprises, a. preparing a solution of at least two mutually insoluble delustering materials, having a refractive index substantially different from each other and from regenerated cellulose, in an inert cosolvent which is soluble in viscose, b. dispersing said solution of delustering materials into viscose, c. extruding the resulting dispersion to form a film, and d. coagulating and regenerating said extruded film to produce a delusterant fog throughout said extruded film comprising a dispersion of fine opalescent particles or droplets of said delusterant materials of colloidal size and comprising at least two phases.
Claim 3
Dependent Claim
18 words
A method as defined in claim 1 in which the delustering materials comprise 0.1-12.0 percent of the cellulose.
Claim 4
Dependent Claim
16 words
A method as defined in claim 1 in which the product is a tubular sausage casing.
Claim 5
Dependent Claim
20 words
A method as defined in claim 1 in which at least one of the delustering materials is normally a liquid.
Claim 6
Dependent Claim
20 words
A method as defined in claim 1 in which at least one of said delustering materials is normally a solid.
Claim 7
Dependent Claim
17 words
A method as defined in claim 1 in which the delustering materials are fats, oils, or waxes.
Claim 8
Dependent Claim
20 words
A method as defined in claim 1 in which the delustering materials are a vegetable oil and a mineral oil.
Claim 9
Dependent Claim
23 words
A method as defined in claim 1 in which said delustering materials are castor oil and mineral oil and said cosolvent is dioxane.
Claim 10
Dependent Claim
23 words
A method as defined in claim 1 in which said delustering materials are castor oil and mineral oil and said cosolvent is tetrahydrofuran.
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) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |