US3560602A
Expired / Lapsed
US
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Method of preparing chloroethylene polymer film having a permanent,non-transferable high slip surface and an opposed low slip surface
Assignee: Dow Chemical Co
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Filing: 1968-07-29
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Granted: 1971-02-02
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Expires: 1988-07-29
Abstract
Abstract THIS INVENTION RELATES TO A CHLOROETHYLENE POLYMER FILM HAVING A PERMANENT, NON-TRANSFERABLE HIGH SLIP SURFACE AND AN OPPOSED LOW SLIP SURFACE AND A METHOD OF PREPARING THE SAME BY THE CONTINUOUS APPLICATION OF A CURABLE ORGANOSILOXANE TO THE INTERIOR SURFACE OF A TUBULAR CHLOROETHYLENE FILM HAVE A PRIOR COATNG OF A NON-CURABLE SILICONE FLUID THEREON. SUCH FILM IS PARTICULARLY SUITED FOR USE IN PACKAGING FOODSTUFFS WHERE A PACKAGING FILM HAVING AN INTERIOR NON-TRANSFERABLE HIGH SLIP SURFACE AND AN EXTERIOR LOW SLIP SURFACE IS REQUIRED.
Inventors
- 👤 Richard T Marzolf
- 👤 Kenneth L Meddaugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:15
CPC Classifications
B; B29; B29C; B29C37/00; B29C37/0067; B29C59/00; B29C59/02; B29C59/021; C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/046; B29C48/00; B29C48/001; B29C48/0012; B29C48/0018; B29C48/0019; B29C48/03; B29C48/09; B29C48/10; B29C48/15; B29C48/154; B29C71/00; B29K; B29K2995/00; B29K2995/0037; B29K2995/0072; C08J2327/00; C08J2327/02; C08J2327/04; C08J2327/08; C08J2483/00; C08J2483/02
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |