Patent US4383882A successfully refreshed from Google Patents.
US4383882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for sealing inserts between sheets of plastic material
Assignee: Individual
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Filing: 1981-07-23
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Granted: 1983-05-17
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Expires: 2001-07-23
Abstract
Abstract A device is arranged to seal inserts between a pair of plastics material sheets. The device includes a double belt press forming a heat sealing press and made up of a pair of press belts one located above the other. Each of the press belts includes an inlet roller, an outlet roller and a belt trained over the inlet and outlet rollers. Supply or guide rollers direct the plastics material sheets onto the belts at the inlet rollers. The inlet rollers are heated and the guide rollers are selectively positionable relative to the inlet rollers so that the contact of the plastics material sheets with the belts at the inlet rollers can be selectively varied for providing the desired heating action. The inserts are sealed between the sheets as they pass between the press belts. At the outlet roller ends of the press belts the sealed inserts are separated from the plastics material sheets. The temperature of the heated inlet rollers is maintained within ±1° centigrade by circulating thermal oil through them. The guide rollers are supported from the inlet rollers by arms so that they can be pivoted about the axes of the inlet rollers.
Inventors
- 👤 Kurt Held
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:20
CPC Classifications
B; B32; B32B; B32B37/00; B32B37/14; B32B37/16; B32B37/22; B32B37/223; B32B37/226; B30; B30B; B30B5/00; B30B5/04; B30B5/06; B32B37/10; B32B37/1027; Y; Y10; Y10T; Y10T156/00; Y10T156/17; Y10T156/1702; Y10T156/1712; Y10T156/1734; Y10T156/1741
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
371 words
A device for the continuous sealing of inserts between sheets of plastics material for instance for sealing documents such as identification cards and the like, comprising a pair of press belts one positioned above the other and forming a double belt press so that the sheets of plastics material and the inserts located between them pass through the double press belt between the pair of press belts, each said press belt comprising an inlet roller, an outlet roller and a belt trained over said inlet and outlet rollers, said inlet rollers disposed in closely spaced relation and forming a gap between said belts trained over said inlet rollers, means located within said press belts between said inlet and outlet rollers for pressing said belts together and for pressing the plastics material sheets arranged to pass between said press belts into sealing contact, means for feeding the plastics material sheets to the gap between said inlet rollers for passage between said press belts, said feeding means including a guide roller connected to each said inlet roller and a supply roller forming a source of the plastic material sheet, a feed device for supplying inserts from a source to the gap between said inlet rollers, and means located adjacent to and spaced outwardly from said outlet rollers for separating the sealed inserts from the sealed plastics material sheets after passage between said press belts, wherein the improvement comprises that said inlet rollers are heated, each said guide roller is mounted for pivotal movement about the axis of said inlet roller with which it is connected, means for pivotally displacing said guide rollers about the axes of said inlet rollers for selectively varying the contact of the plastics material sheets with said belts passing over said inlet rollers, said means for pivotally displacing comprising an arm pivotally connected at one end to the axis of rotation of said inlet roller and secured at the other end to said guide roller, said feed device comprises a vacuum feeder arranged to be synchronously controlled by the upper said press belt, and said means for separating the sealed inserts comprises a punch press, a stacking device, and a collector for waste strip of the plastics material sheets.
Claim 2
Independent Claim
371 words
A device for the continuous sealing of inserts between sheets of plastics material for instance for sealing documents such as identification cards and the like, comprising a pair of press belts one positioned above the other and forming a double belt press so that the sheets of plastics material and the inserts located between them pass through the double press belt between the pair of press belts, each said press belt comprising an inlet roller, an outlet roller and a belt trained over said inlet and outlet rollers, said inlet rollers disposed in closely spaced relation and forming a gap between said belts trained over said inlet rollers, means located within said press belts between said inlet and outlet rollers for pressing said belts together and for pressing the plastics material sheets arranged to pass between said press belts into sealing contact, means for feeding the plastics material sheets to the gap between said inlet rollers for passage between said press belts, said feeding means including a guide roller connected to each said inlet roller and a supply roller forming a source of the plastic material sheet, a feed device for supplying inserts from a source to the gap between said inlet rollers, and means located adjacent to and spaced outwardly from said outlet rollers for separating the sealed inserts from the sealed plastics material sheets after passage between said press belts, wherein the improvement comprises that said inlet rollers are heated, each said guide roller is mounted for pivotal movement about the axis of said inlet roller with which it is connected, means for pivotally displacing said guide rollers about the axes of said inlet rollers for selectively varying the contact of the plastics material sheets with said belts passing over said inlet rollers, said means for pivotally displacing comprising an arm pivotally connected at one end to the axis of rotation of said inlet roller and secured at the other end to said guide roller, said feed device comprises a vacuum feeder arranged to be synchronously controlled by the upper said press belt, and said means for separating the sealed inserts comprises a punch press, a stacking device, and a collector for waste strip of the plastics material sheets.
Claim 3
Dependent Claim
28 words
A device, as set forth in claim 1, including means for circulating thermal oil through said inlet rollers for maintaining the temperature within a range of ±1° centigrade.
Claim 4
Dependent Claim
28 words
A device, as set forth in claim 1 or 2, including stops located on the edge of said inlet rollers for effecting synchronized control of said vacuum feeder.
Claim 5
Dependent Claim
20 words
A device, as set forth in claim 3, wherein said vacuum feeder is arranged to lift exactly six aligned inserts.
References Cited (Backward Citations)
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US2510229A
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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) | 1986-05-16 | 1986-11-15 | 1987-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-16 | 1990-11-15 | 1991-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-16 | 1994-11-15 | 1995-05-17 | $7700.00 | Window Closed / Lapsed |