Laminated fluid-barrier container and method of making it
Abstract
Abstract THIS APPLICATION DISCLOSES A LAMINATED FLUID-BARRIER CONTAINER AND METHOD OF MAKING IT, PARTICULARLY A CONTAINER HAVING A COLD-WORK-STRENGTHENED FIBER-ORIENTED LOADCARRYING PLASTIC LAMINA OR LAYER AND ANOTHER LAMINA OR LAYER WHICH FORMS A HIGHLY EFFECTIVE BARRIER AGAINST THE PASSAGE OF FLUIDS, ESPECIALLY SUCH FLUIDS AS OXYGEN AND AROMATIC VAPORS. SUCH CONTAINERS ARE ESPECIALLY SUITABLE FOR FOODS, WHERE OXYGEN ENTRY CAUSES SPOILAGE, FOR GAS TANKS WHERE VAPOR PASSAGE CAUSES FUEL LOSS AND AIR POLLUTION, AND FOR SIMILAR USES. THE CONTAINER BODY IS FORMED BY STRETCH-FORMING A LAMINATED BLANK OR WORKPIECE IN THE WOLID-PHASE CONDITION TO CAUSE COLD-WORK STRENGTHENING AND FIBER-ORIENTATION OF THE LOAD-CARRYING LAMINA OF THE CONTAINER AND TO STRETCH THE FLUID-BARRIER LAMINA ALONG WITH THE LOAD-CARRYING LAMINA. CONTACT BETWEEN LAMINAE IS ASSURED BY EXCLUDING AIR AND USING BONDING MATERIAL BETWEEN LAMINAE IF DESIRED.
Inventors
- 👤 Paul M Coffman
Bibliographic Details
Claims Analysis
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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) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |