US3910169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated mandrel for carton forming machine
Assignee: Phillips Petroleum Co
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Filing: 1973-09-07
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Granted: 1975-10-07
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Expires: 1993-09-07
Abstract
Abstract The mandrels in a carton forming machine are coated with a layer of a normally solid poly(arylene sulfide). The poly(phenylene sulfide) coated mandrels are particularly advantageous for use in carton forming machines wherein the mandrels are rotated about a common axis in that light weight metals such as aluminum can be utilized to form the mandrel rather than steel, thereby permitting a higher rate of rotation and greater production of cartons.
Inventors
- 👤 Leslie O Coburn
- 👤 Silvio T Farfaglia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:17
CPC Classifications
B; B31; B31B; B31B50/00; B31B50/26; B31B50/28; B31B50/282; Y; Y10; Y10T; Y10T156/00; Y10T156/17; Y10T156/1702; Y10T156/1744; Y10T156/1768; Y10T156/1771
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
200 words
In a machine for forming a tubular container wherein a sidewall blank is wrapped around a mandrel with the opposite side edges overlapping and the overlapping portions are bonded to form a convolute, and a bottom closure is formed on one end of said convolute, comprising a turret, a plurality of said mandrels positioned therein, and means for rotating said turret to move each of said mandrels sequentially through a sidewall blank receiving station, a sidewall blank folding and bonding station, a bottom closure forming station, and a stripping station for the removal of the thus formed container from the respective mandrel; the improvement comprising each of said mandrels having a hollow mandrel body formed of aluminum with the blank contacting surface of said mandrel body being coated with a coating composition containing a normally solid poly(arylene sulfide), thereby reducing the frictional resistance between each mandrel and the respective convolute and reducing the weight of each mandrel, permitting the attainment of a higher production rate for the machine, and each of said mandrels having an end cap formed for steel and positioned on one end of the mandrel to serve as an anvil in the formation of the bottom closure.
Claim 2
Dependent Claim
200 words
In a machine for forming a tubular container wherein a sidewall blank is wrapped around a mandrel with the opposite side edges overlapping and the overlapping portions are bonded to form a convolute, and a bottom closure is formed on one end of said convolute, comprising a turret, a plurality of said mandrels positioned therein, and means for rotating said turret to move each of said mandrels sequentially through a sidewall blank receiving station, a sidewall blank folding and bonding station, a bottom closure forming station, and a stripping station for the removal of the thus formed container from the respective mandrel; the improvement comprising each of said mandrels having a hollow mandrel body formed of aluminum with the blank contacting surface of said mandrel body being coated with a coating composition containing a normally solid poly(arylene sulfide), thereby reducing the frictional resistance between each mandrel and the respective convolute and reducing the weight of each mandrel, permitting the attainment of a higher production rate for the machine, and each of said mandrels having an end cap formed for steel and positioned on one end of the mandrel to serve as an anvil in the formation of the bottom closure.
Claim 3
Dependent Claim
45 words
A machine in accordance with claim 1 wherein said mandrels are positioned on said turret with the elongated axis of each mandrel being in a plane perpendicular to the axis of rotation of said turret and extending radially with respect to said axis of rotation.
Claim 4
Dependent Claim
54 words
A machine in accordance with claim 2 wherein said coating composition comprises a normally solid poly(arylene sulfide), from about 0.5 to about 100 percent by weight titanium dioxide, based on the weight of poly(arylene sulfide), and from about 0.5 to about 75 percent by weight, fluorocarbon polymer based on the weight of poly(arylene sulfide).
Claim 5
Dependent Claim
14 words
A machine in accordance with claim 3 wherein said poly(arylene sulfide) is polY(phenylene sulfide).
Claim 6
Dependent Claim
54 words
A machine in accordance with claim 1 wherein said coating composition comprises a normally solid poly(arylene sulfide), from about 0.5 to about 100 percent by weight titanium dioxide, based on the weight of poly(arylene sulfide), and from about 0.5 to about 75 percent by weight, fluorocarbon polymer based on the weight of poly(arylene sulfide).
Claim 7
Dependent Claim
14 words
A machine in accordance with claim 1 wherein said poly(arylene sulfide) is poly(phenylene sulfide).
Claim 8
Dependent Claim
23 words
A machine in accordance with claim 6 wherein all of the blank contacting surface of said mandrel is coated with said coating composition.
References Cited (Backward Citations)
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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) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |