US3713862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for pigmented side striping of can bodies
Assignee: Continental Can Co Inc
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Filing: 1970-11-16
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Granted: 1973-01-30
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Expires: 1990-11-16
Abstract
Abstract A method for side striping cans which uses a single belt having slots of can seam length along its middle. A stream of fluidized powder is shaped and is jetted toward the side seam of the can at an angle less than 30 degrees. The side seam of the can is moving at a uniform speed and in this way the powdered material settles onto the can side seam with an even distribution of powdered material across each lateral unit of the side seam. The edges of the stripe are sharp because the side seam lies in the segmented belt.
Inventors
- 👤 R Winkless
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:30
CPC Classifications
B; B44; B44D; B44D3/00; B44D3/22; B44D3/225; B05; B05C; B05C19/00; B05C19/02; B21; B21D; B21D51/00; B21D51/16; B21D51/26; B21D51/2676
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
103 words
A method of coating the side seam of a can comprising the steps of: fluidizing a polymeric powder; jetting a shaped stream of fluidized polymeric powder at an angle of less than 30* toward the hot side seam of a can; moving said can side seam at a constant rate past said point of jetting said stream; charging said polymeric powder electrostatically; grounding said can; and electrically shielding all of said can body except said side seam from said charged fluidized polymeric powder whereby said polymeric powder is deposited upon said hot side seam and not upon any other part of said can.
Claim 2
Independent Claim
103 words
A method of coating the side seam of a can comprising the steps of: fluidizing a polymeric powder; jetting a shaped stream of fluidized polymeric powder at an angle of less than 30* toward the hot side seam of a can; moving said can side seam at a constant rate past said point of jetting said stream; charging said polymeric powder electrostatically; grounding said can; and electrically shielding all of said can body except said side seam from said charged fluidized polymeric powder whereby said polymeric powder is deposited upon said hot side seam and not upon any other part of said can.
Claim 3
Dependent Claim
55 words
A method of coating the side seam of a can as set forth in claim 1 in which said step of jetting said fluidized powder comprises the steps of: shaping said stream of fluidized powder as it is jetted toward said hot side seam; and allowing said fluidized powder to settle onto said side seam.
Claim 4
Dependent Claim
45 words
A method of coating the side seam of a can as set forth in claim 2 in which said step of shaping said stream further comprises the step of: forming the cross-section of said stream of fluidized powder into the general shape of a rectangle.
Claim 5
Dependent Claim
37 words
A method of coating the side seam of a can as set forth in claim 1 in which said step of grounding said can comprises the step of: electrically connecting said can wall to an electrical ground.
Claim 6
Dependent Claim
39 words
A method of coating the side seam of a can as set forth in claim 1 further comprising the additional step of: aspirating all excess powder which does not deposit on the side seam into an excess powder collector.
Claim 7
Dependent Claim
50 words
A method of coating the side seam of a can as set forth in claim 5 comprising the additional step of: intensifying said aspirating when no can and no can side seam is present to be covered whereby all powder is removed from the area where it has been blown.
Claim 8
Independent Claim
136 words
A method of coating the side seam of a series of cans coming directly from a can body maker comprising the steps of: moving a hot can side seam at a constant rate past a powder nozzle for blowing powder onto said side seam; blowing a shaped stream of polymeric powder at an angle of less than 30* toward the hot side seam of a can body as it moves past the powder nozzle; electrostatically charging the polymeric powder; electrically shielding all of said can body except said side seam from said charged polymeric powder; electrically connecting said can body to an electrical ground; and aspirating all the powder which does not deposit on said side seam into an excess powder collector through a conduit having an orifice located near the side seam of said can.
Claim 9
Independent Claim
136 words
A method of coating the side seam of a series of cans coming directly from a can body maker comprising the steps of: moving a hot can side seam at a constant rate past a powder nozzle for blowing powder onto said side seam; blowing a shaped stream of polymeric powder at an angle of less than 30* toward the hot side seam of a can body as it moves past the powder nozzle; electrostatically charging the polymeric powder; electrically shielding all of said can body except said side seam from said charged polymeric powder; electrically connecting said can body to an electrical ground; and aspirating all the powder which does not deposit on said side seam into an excess powder collector through a conduit having an orifice located near the side seam of said can.
Claim 10
Dependent Claim
67 words
A method of coating the side seam of a series of cans coming directly from a can body maker as set forth in claim 7 further comprising the step of: intensifying said aspirating of the powder when no can bodies come from said can body maker to be coated by said powder whereby all of said blown powder is drawn from the area where it was blown.
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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) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |