Patent US3847540A successfully refreshed from Google Patents.
US3847540A
Expired / Lapsed
US
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Blank heating system for carton forming machine
Assignee: Phillips Petroleum Co
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Filing: 1973-09-07
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Granted: 1974-11-12
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Expires: 1993-09-07
Abstract
Abstract In a machine for forming tubular cartons from generally rectangular blanks, the blank is heated by two side margin heaters and a transverse heater employing heated gas. The heated gas is supplied to the side margin heaters in countercurrent directions. The transverse heater can be divided at the midpoint and supplied with heated gas at both ends. A perforated conduit supplied with cool gas can be positioned between the blank magazine and the heaters to provide an air curtain between the heaters and the blanks in the magazine.
Inventors
- 👤 S Farfaglia
- 👤 R Bock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:37
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/10; B29C65/103; B29C66/00; B29C66/003; B29C66/01; B29C66/345; B29C66/3452; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/4312; B29C66/43121; B29C66/43122; B29C66/432; B29C66/4322; B29C66/4326; B29C66/70; B29C66/72; B29C66/723; B29C66/7232; B29C66/72327; B29C66/72328; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; B29C66/80; B29C53/00; B29C53/36; B29C53/38; B29C53/40; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/83; B29C66/832; B29L; B29L2031/00; B29L2031/712; B29L2031/7162; B29L2031/7166; B31; B31B; B31B50/00; B31B50/74; B31B50/741
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
252 words
In a machine for forming a tubular carton from a generally rectangular flat sidewall blank having thermoplastic coating on the upper and lower surfaces thereof and having first and second side margins and top and bottom margins, wherein the sidewall blanks are individually removed from a sidewall blank magazine and conveyed through a heating station to a forming mandrel, the heated sidewall blank is wrapped around the forming mandrel and the overlapping first and second side margins are bonded together, the improvement comprising a first conduit means positioned in said heating station at least generally parallel to and spaced upwardly from the location which would be occupied by the upper surface of the first side margin of one of said blanks in said heating station, said first conduit having orifices therein spaced along the length thereof and directed at the location which would be occupied by said upper surface of said first side margin of the blank in said heating station, a second conduit means positioned in said heating station at least generally parallel to and spaced downwardly from the location which would be occupied by the lower surface of the second side margin of the blank in said heating station, said second conduit means having orifices theRein spaced along the length thereof and directed at the location which would be occupied by the lower surface of said second side margin of the blank in said heating station, and means for supplying a hot gas to said first and second conduit means.
Claim 2
Dependent Claim
252 words
In a machine for forming a tubular carton from a generally rectangular flat sidewall blank having thermoplastic coating on the upper and lower surfaces thereof and having first and second side margins and top and bottom margins, wherein the sidewall blanks are individually removed from a sidewall blank magazine and conveyed through a heating station to a forming mandrel, the heated sidewall blank is wrapped around the forming mandrel and the overlapping first and second side margins are bonded together, the improvement comprising a first conduit means positioned in said heating station at least generally parallel to and spaced upwardly from the location which would be occupied by the upper surface of the first side margin of one of said blanks in said heating station, said first conduit having orifices therein spaced along the length thereof and directed at the location which would be occupied by said upper surface of said first side margin of the blank in said heating station, a second conduit means positioned in said heating station at least generally parallel to and spaced downwardly from the location which would be occupied by the lower surface of the second side margin of the blank in said heating station, said second conduit means having orifices theRein spaced along the length thereof and directed at the location which would be occupied by the lower surface of said second side margin of the blank in said heating station, and means for supplying a hot gas to said first and second conduit means.
Claim 3
Dependent Claim
92 words
Apparatus in accordance with claim 1 further comprising third conduit means positioned in said heating station at least generally parallel to and spaced from the location which would be occupied by the upper surface of the bottom margin of the blank in said heating station, said third conduit means having orifices therein spaced along the length thereof and directed at the location which would be occupied by the upper surface of said bottom margin of the blank in said heating station, and means for supplying hot gas to said third conduit means.
Claim 4
Dependent Claim
37 words
Apparatus in accordance with claim 2 wherein the means for conveying the individual blanks through said heating station is periodically actuated to index a blank into position with respect to said first, second and third conduit means.
Claim 5
Dependent Claim
70 words
Apparatus in accordance with claim 3 wherein the initial orifice in one of said first and second conduit means is adjacent the location which would be occupied by the top margin of the blank in said heating station and the initial orifice of the other of said first and second conduits is adjacent the location which would be occupied by the bottom margin of the blank in said heating station.
Claim 6
Dependent Claim
72 words
Apparatus in accordance with claim 4 wherein said third conduit means has a partition therein at about the midpoint of the width of the space which would be occupied by the blank in the heating station to form separate plenum chambers, and wherein said means for supplying hot gas to said third conduit means comprises means for supplying hot gas to each of said plenum chambers at locations remote from said partition.
Claim 7
Dependent Claim
58 words
Apparatus in accordance with claim 5 further comprising a fourth conduit means positioned between said magazine and said heating station, said fourth conduit means having a series of orifices therein spaced along the length thereof to form an air curtain between said magazine and said heating station, and means for providing cool gas to said fourth conduit means.
Claim 8
Dependent Claim
33 words
Apparatus in accordance with claim 6 wherein said means for providing cool gas to said fourth conduit means is actuated only when the machine is actuated but said means for conveying is deactuated.
Claim 9
Dependent Claim
70 words
Apparatus in accordance with claim 1 wherein the initial orifice in one of said first and second conduit means is adjacent the location which would be occupied by the top margin of the blank in said heating station and the initial orifice of the other of said first and second conduits is adjacent the location which would be occupied by the bottom margin of the blank in said heating station.
Claim 10
Dependent Claim
72 words
Apparatus in accordance with claim 2 wherein said third conduit means has a partition therein at about the midpoint of the width of the space which would be occupied by the blank in the heating station to form separate plenum chambers, and wherein said means for supplying hot gas to said third conduit means comprises means for supplying hot gas to each of said plenum chambers at locations remote from said partition.
Claim 11
Dependent Claim
58 words
Apparatus in accordance with claim 1 further comprising a fourth conduit means positioned between said magazine and said heating station, said fourth conduit means having a series of orifices therein spaced along the length thereof to form an air curtain between said magazine and said heating station, and means for providing cool gas to said fourth conduit means.
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) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |