US3115731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for automatically wrapping and sealing articles in thermoplastic overwrap film material
Assignee: Millennium Petrochemicals Inc
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Filing: 1959-06-18
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Granted: 1963-12-31
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Expires: 1979-06-18
Abstract
No abstract record available.
Inventors
- 👤 James E Blythe
- 👤 Philip E Prince
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:58
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/004; B29C66/0042; B29C66/0044; B29C65/00; B29C65/02; B29C65/18; B29C66/0046; B29C66/00461; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/4312; B29C66/43121; B29C66/432; B29C66/4322; B29C66/70; B29C66/71; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; B29C66/80; B29C66/83; B29C66/832; B29C66/84; B29C66/849; B29C66/90; B29C66/91; B29C66/912; B29C66/9121; B29C66/91211; B29C66/91212; B29C66/91231; B29C66/914; B29C66/9141; B29C66/91421; B29C66/91431; B29C66/9161; B29C66/91641; B29C66/91651; B29C66/96; B29C66/961; B65; B65B; B65B51/00; B65B51/10; B65B51/14; B29C66/81; B29C66/812; B29C66/8122
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
IN THE METHOD OF AUTOMATICALLY WRAPPING ARTICLES IN THERMOPLASTIC OVERWRAP FILM MATEIAL SUCH AS POLYETHYLENE WHEREIN A SHEET OF THERMOPLASTIC FILM MATERIAL IS FOLDED AROUND AN ARTICLE SO AS TO FROM OVERLAPPING MARGINAL FILM EDGES AND THE ARTICEL WRAPPED IN POLYETHYLENE FILM IS TRANSPORTED RELATIVE TO A HEATED PLATE WITH SAID OVERLAPPING FILM EDGES IN SLIDING CONTACT WITH A SURFACE OF SAID PLATE, THE STEPS COMPRSING COVERING THE CONTROL SURFACE OF SAID HEATED PLATE WITH A POLYESTER FABRIC IMPREGNATED WITH SILICONE OIL SO THAT SAID IMPREGNATED FABRIC HAS A SLIDING RESISTANCE WITH RESPECT TO SAID POLYETHYLENE WHICH IS LESS THAN THAT RESISTANCE WHICH WILL CAUSE THE FILM TO TEAR AT THE SEALING TEMPERATURE, AND MAINTAINING SAID COVERED SURFACE AT A SEALING TEMPERATURE SUFFICIENT TO FUSE SAID OVERLAPING FILM EDGES TOGETHER WHEN THE ARTICLE IS MOVED RELATIVE TO SAID PLATE IN SLIDING CONTACT THEREWITH.
Claim 2
Dependent Claim
143 words
IN THE METHOD OF AUTOMATICALLY WRAPPING ARTICLES IN THERMOPLASTIC OVERWRAP FILM MATEIAL SUCH AS POLYETHYLENE WHEREIN A SHEET OF THERMOPLASTIC FILM MATERIAL IS FOLDED AROUND AN ARTICLE SO AS TO FROM OVERLAPPING MARGINAL FILM EDGES AND THE ARTICEL WRAPPED IN POLYETHYLENE FILM IS TRANSPORTED RELATIVE TO A HEATED PLATE WITH SAID OVERLAPPING FILM EDGES IN SLIDING CONTACT WITH A SURFACE OF SAID PLATE, THE STEPS COMPRSING COVERING THE CONTROL SURFACE OF SAID HEATED PLATE WITH A POLYESTER FABRIC IMPREGNATED WITH SILICONE OIL SO THAT SAID IMPREGNATED FABRIC HAS A SLIDING RESISTANCE WITH RESPECT TO SAID POLYETHYLENE WHICH IS LESS THAN THAT RESISTANCE WHICH WILL CAUSE THE FILM TO TEAR AT THE SEALING TEMPERATURE, AND MAINTAINING SAID COVERED SURFACE AT A SEALING TEMPERATURE SUFFICIENT TO FUSE SAID OVERLAPING FILM EDGES TOGETHER WHEN THE ARTICLE IS MOVED RELATIVE TO SAID PLATE IN SLIDING CONTACT THEREWITH.
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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) | 1966-12-30 | 1967-07-01 | 1967-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-30 | 1971-07-01 | 1971-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-30 | 1975-07-01 | 1975-12-31 | $7700.00 | Window Closed / Lapsed |