Patent US3075868A successfully refreshed from Google Patents.
US3075868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of bonding polymer plastics to substrate webs of dissimilar materials
Assignee: Continental Can Co Inc
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Filing: 1957-09-09
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Granted: 1963-01-29
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Expires: 1977-09-09
Abstract
No abstract record available.
Inventors
- 👤 Florren E Long
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:27
CPC Classifications
B; B32; B32B; B32B27/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
THE METHOD OF LAMINATING A HEAT-ACTIVATABLE POLYMER MATERIALS, WHICH COMPRISES THE STEPS OF HEATING A SURFACE OF A SHEET FROM THE GROUP CONSISTING OF POLYETHYLENE AND POLYSTYRENE IN THE PRESENCE OF AIR BY EXPOSURE AT A TEMPERATURE OF ABOUT 1500 DEGRESS F. AND THEREBY ACTIVATING SAID SURFACE OF SAID SHEET BY SUPERFICIAL OXIDATION PRIOR TO SOFTENING OF THE SHEET THROUGHOUT ITS THICKNESS, IMMEDIATELY BRINGING THE HOT AND ACTIVATED SURFACE OF SAID SHEET INTO DIRECT CONTACT WITH A SUBSTRATE WEB TO BE LAMINATED THEREWITH, PRESSING THE HEAT ACTIVATED SHEET DIRECTLY AGAINST SAID SUBSTRATE WEB WHILE THE SURFACE OF SAID SHEET IS IN SAID HEATED AND ACTIVATED CONDITION, AND MAINTAINING OTHER PARTS OF THE THICK-
Claim 2
Independent Claim
113 words
THE METHOD OF LAMINATING A HEAT-ACTIVATABLE POLYMER MATERIALS, WHICH COMPRISES THE STEPS OF HEATING A SURFACE OF A SHEET FROM THE GROUP CONSISTING OF POLYETHYLENE AND POLYSTYRENE IN THE PRESENCE OF AIR BY EXPOSURE AT A TEMPERATURE OF ABOUT 1500 DEGRESS F. AND THEREBY ACTIVATING SAID SURFACE OF SAID SHEET BY SUPERFICIAL OXIDATION PRIOR TO SOFTENING OF THE SHEET THROUGHOUT ITS THICKNESS, IMMEDIATELY BRINGING THE HOT AND ACTIVATED SURFACE OF SAID SHEET INTO DIRECT CONTACT WITH A SUBSTRATE WEB TO BE LAMINATED THEREWITH, PRESSING THE HEAT ACTIVATED SHEET DIRECTLY AGAINST SAID SUBSTRATE WEB WHILE THE SURFACE OF SAID SHEET IS IN SAID HEATED AND ACTIVATED CONDITION, AND MAINTAINING OTHER PARTS OF THE THICK-
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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) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |