US3823818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Belted preforms
Assignee: Monsanto Co
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Filing: 1972-01-24
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Granted: 1974-07-16
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Expires: 1992-01-24
Abstract
Abstract Preforms used in blow molding plastic containers are sequentially affixed at spaced locations along a disposable web. As the preforms are affixed to the web, the composite is wound on a suitable storage reel which is housed in an enclosed shipping and storage container. Thereafter, the belted preforms may at any convenient time and place be fed to a finishing unit where they are removed from the web by any suitable means, such as by severing the web or by application of heat. Each preform is then fed to a blow molding station where the fabrication of the containers is completed.
Inventors
- 👤 C Shaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:55
CPC Classifications
B; B65; B65D; B65D73/00; B65D73/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
As an article of manufacture, belted preforms comprising a belt carrying synthetic plastic preforms hygroscopic in nature for use in blow molding plastic containers, said preforms having molded finishes formed adjacent one end and being situated at longitudinally spaced locations along the lengtH of said belt with their longitudinal axes substantially parallel to the surface of said belt, said belt comprising a pair of synthetic plastic webs bonded together in the interval between adjacent preforms and forming a retaining loop around each of said preforms, said belted preforms being wound on a reel and disposed in a hermetically sealed container to limit moisture from being absorbed by the synthetic plastic preforms thereby minimizing the formation of bubbles causes by any moisture present when the preforms are reheated for blow molding.
Claim 2
Dependent Claim
130 words
As an article of manufacture, belted preforms comprising a belt carrying synthetic plastic preforms hygroscopic in nature for use in blow molding plastic containers, said preforms having molded finishes formed adjacent one end and being situated at longitudinally spaced locations along the lengtH of said belt with their longitudinal axes substantially parallel to the surface of said belt, said belt comprising a pair of synthetic plastic webs bonded together in the interval between adjacent preforms and forming a retaining loop around each of said preforms, said belted preforms being wound on a reel and disposed in a hermetically sealed container to limit moisture from being absorbed by the synthetic plastic preforms thereby minimizing the formation of bubbles causes by any moisture present when the preforms are reheated for blow molding.
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) | 1977-07-15 | 1978-01-14 | 1978-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-15 | 1982-01-14 | 1982-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-15 | 1986-01-14 | 1986-07-16 | $7700.00 | Window Closed / Lapsed |