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US3709642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube coating film and apparatus
Assignee: Individual
•
Filing: 1970-12-02
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Granted: 1973-01-09
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Expires: 1990-12-02
Abstract
Abstract This invention relates to an apparatus for coating the inside of tubular film manufactured by a blown film process. The coating apparatus includes a dispensing means comprising a coating conduit passing through a tubular film die into a pressurized area of the said film with a distributing means connected to the coating conduit, said distributing means include a vaporizing means having temperature control means.
Inventors
- 👤 F Stannard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:13
CPC Classifications
B; B05; B05C; B05C7/00; B05C7/04; B05B; B05B13/00; B05B13/06; B05B13/0627; B05B17/00; B05B17/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
A coating apparatus for coating the inside surface of a blown tube between the die and the pinch rollers, comprising: a die for forming a tube, a pressure means including a pressure conduit passing through the die to pressurize the tube formed by the die, a pair of pinch rollers spaced from said die to form a pressure barrier at the opposite end of the tube formed by the die, dispensing means including a coating conduit passing through the die into the pressurized area of the tube to transport coating material through the die, the conduit projects outward from the face of the die, the dispensing means includes a distributing means connected to the outward end of the coating conduit, said distribution means includes a vaporizing means to hold a quantity of the coating material within the pressurized tube, and the vaporizing means includes a material temperature control means for changing the temperature of the coating material to vaporize the coating material within the pressurized tube.
Claim 2
Dependent Claim
166 words
A coating apparatus for coating the inside surface of a blown tube between the die and the pinch rollers, comprising: a die for forming a tube, a pressure means including a pressure conduit passing through the die to pressurize the tube formed by the die, a pair of pinch rollers spaced from said die to form a pressure barrier at the opposite end of the tube formed by the die, dispensing means including a coating conduit passing through the die into the pressurized area of the tube to transport coating material through the die, the conduit projects outward from the face of the die, the dispensing means includes a distributing means connected to the outward end of the coating conduit, said distribution means includes a vaporizing means to hold a quantity of the coating material within the pressurized tube, and the vaporizing means includes a material temperature control means for changing the temperature of the coating material to vaporize the coating material within the pressurized tube.
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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) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |