Saran coating of cellulosic casing
Abstract
Abstract AN OXYGEN- AND WATER VAPOR IMPERMEABLE FOOD CASING IS PREPARED BY COATING A REGENERATED CELLULOSE OR FIBER REINFORCED REGENERATED CELLULOSE FOOD CASING WITH A COATING COMPOSITION COMPRISING A SARAN, A PLASTICIZER, A POLYMERIC POLYISOCYANATE, AN ACTIVATOR, SUCH AS A POLYOL OR REACTION PRODUCT OF A POLYOL WITH ETHLENE OXIDE OR THE LIKE, AND A SOLVENT SYSTEM COMPRISING A HIGH BOILING SOLVENT, SUCH AS BUTYROLACTONE, AND A LOW BOILING SOLVENT SUCH AS METHYL ETHYL KETONE OR TETRAHYDROFURAN. THE COATED CASING IS HEATED TO DRY AND CURE THE COATING THEREON. THE COATING COMPOSITION IS SELF-PRIMING AND FORMS A MORE ADHERENT COATING HAVING AN OXYGEN- AND VAPOR PERMEABILITY LESS THAN ABOUT 1.0 CC./100 IN.2/24 HR.-ATM.
Inventors
- 👤 A Turbak
- 👤 H Rose
Bibliographic Details
Claims Analysis
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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) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |