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US3655480A
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Heating parison preforms in liquid fluorinated organic compound
Assignee: Phillips Petroleum Co
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Filing: 1969-08-18
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Granted: 1972-04-11
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Expires: 1989-08-18
Abstract
Abstract Parison preforms are heated to orientation temperature in a liquid fluorinated organic compound bath. The thus heated parisons can be sealed, stretched and blow molded to give oriented hollow articles such as bottles.
Inventors
- 👤 Richard K Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:46
CPC Classifications
B; B29; B29B; B29B13/00; B29B13/02; B29B13/023; B29B13/024; B29C; B29C49/00; B29C49/42; B29C49/64; B29C49/6409; B29C49/6418; B29C35/00; B29C35/02; B29C35/04; B29C35/041; B29C2035/042; B29K; B29K2023/00; B29L; B29L2023/00; B29L2023/22; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
26 words
A method according to claim 1 wherein said polymer is polypropylene and said fluorinated organic compound has a boiling point within the range of 340*-390* F.
Claim 2
Dependent Claim
26 words
A method according to claim 1 wherein said fluorinated organic compound is in contact with said parison for a time within the range of 1-4 minutes.
Claim 3
Dependent Claim
18 words
A method according to claim 1 wherein said fluorinated organic compound is selected from the group consisting of
Claim 4
Dependent Claim
11 words
A method according to claim 1 wherein said polymer is polypropylene.
Claim 5
Dependent Claim
25 words
A method according to claim 5 wherein said parison is heated to a temperature of 10*-30* F. below the crystalline melting point of said polymer.
Claim 6
Dependent Claim
18 words
A method according to claim 6 wherein said fluorinated organic compound is selected from the group consisting of
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) | 1975-04-11 | 1975-10-11 | 1976-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-11 | 1979-10-11 | 1980-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-11 | 1983-10-11 | 1984-04-11 | $7700.00 | Window Closed / Lapsed |