US3868206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for manufacture of highly oriented polymeric containers
Assignee: Continental Can Co Inc
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Filing: 1973-07-19
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Granted: 1975-02-25
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Expires: 1993-07-19
Abstract
Abstract A method and apparatus for making highly oriented polymeric containers in which the method involves the deposition of a thermoplastic material onto an elastomeric form, fusing the material into a homogeneous mass and effecting temperature control and subsequent expansion of the form through the use of relatively incompressible fluids. The apparatus for practicing the process includes a support carrying the elastomeric form, a heating element and a fluid system for controlling the temperature of the material deposited upon the form and the expansion thereof.
Inventors
- 👤 Paul M Erlandson
- 👤 Edmund H Merz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:25
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/42; B29C49/64; B29C49/6409; B29C49/6436; B29C49/6454; B29C41/00; B29C41/02; B29C41/08; B29C49/44; B29C49/46; B29C2049/4602; B29C2049/465; B29C2049/4652; B29C49/78; B29C49/786; B29C2049/7861; B29C2049/7863; B29C33/00; B29C33/02; B29C43/00; B29C43/02; B29C43/10; B29C43/12; Y; Y10; Y10S; Y10S425/00; Y10S425/039
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
159 words
An apparatus having a plurality of of elements adapted to operate in sequence to produce a biaxial oriented container, said apparatus comprising: a. a support; b. elastomeric means on said support for carrying a parison of a homogeneous mass of a thermoplastic material which undergoes orientation when stretched just above its glass transition temperature; c. means adjacent the elastomeric means for depositing particles of the thermoplastic material upon the elastomeric means; d. means carried within the elastomeric means for heating and fusing the thermoplastic particles into a homogeneous mass in the form of a parison; e. an expansion mold for receiving the elastomeric means carrying the fused parison, and for shaping the parison upon expansion thereof and f. a liquid system connected to said elastomeric means for directing substantially incompressible liquids through said elastomeric means for cooling the fused parison to a temperature just above the glass transition temperature of the material and for subsequently expanding the cooled parison.
Claim 2
Independent Claim
159 words
An apparatus having a plurality of of elements adapted to operate in sequence to produce a biaxial oriented container, said apparatus comprising: a. a support; b. elastomeric means on said support for carrying a parison of a homogeneous mass of a thermoplastic material which undergoes orientation when stretched just above its glass transition temperature; c. means adjacent the elastomeric means for depositing particles of the thermoplastic material upon the elastomeric means; d. means carried within the elastomeric means for heating and fusing the thermoplastic particles into a homogeneous mass in the form of a parison; e. an expansion mold for receiving the elastomeric means carrying the fused parison, and for shaping the parison upon expansion thereof and f. a liquid system connected to said elastomeric means for directing substantially incompressible liquids through said elastomeric means for cooling the fused parison to a temperature just above the glass transition temperature of the material and for subsequently expanding the cooled parison.
Claim 3
Dependent Claim
24 words
An apparatus as recited in claim 1 in which said elastomeric means comprises: a. an elongated sleeve having a high elasticity and thermal conductivity.
Claim 4
Dependent Claim
45 words
An apparatus as recited in claim 1 in which said fluid system comprises: a. a pump; b. conduits for directing and returning fluid from said elastomeric means; and c. pulse means for causing an accumulation of liquid in said elastomeric means for expanding the parison.
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) | 1978-02-24 | 1978-08-26 | 1979-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-24 | 1982-08-26 | 1983-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-24 | 1986-08-26 | 1987-02-25 | $7700.00 | Window Closed / Lapsed |