US4264400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal laminating apparatus
Assignee: G Siempelkamp GmbH and Co KG
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Filing: 1979-10-26
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Granted: 1981-04-28
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Expires: 1999-10-26
Abstract
Abstract An apparatus for laminating a foil or like web to a substrate in which the foil is guided to a thermal-bonding head via an inclined surface provided with perforations and forming a wall of a plenum chamber which is evacuated. The thermal bonding head, in turn, is formed with a perforated surface connected to the discharge side of a blower whose intake side is connected to the plenum chamber so that the foil is urged against the substrate on a suitable conveyor by the pressure from the blower.
Inventors
- 👤 Paul Breitmar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:17
CPC Classifications
B; B32; B32B; B32B38/00; B32B38/18; B32B38/1858; B29; B29C; B29C63/00; B29C63/02; B32B37/00; B32B37/10; B29K; B29K2711/00; B29K2711/14; Y; Y10; Y10T; Y10T156/00; Y10T156/17
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
145 words
An apparatus for forming a combination of a web and a substrate, comprising: a conveyor for advancing said substrate along a transport path; a supply coil of said web spaced from said path; a laminating head disposed adjacent said path for drawing said web from said coil and applying said web to said substrate, said head having an upstream side formed with a suction box having a suction surface inducing said web to lie thereagainst, said head further comprising a pressure box downstream from said suction box in the direction of travel of said substrate, said pressure box having a gas-permeable surface juxtaposed with said substrate and forming a gas cushion applying said web to said substrate and enabling said web to bond to said substrate; and means for connecting said suction box to a suction source and said pressure box to a pressure source.
Claim 2
Independent Claim
145 words
An apparatus for forming a combination of a web and a substrate, comprising: a conveyor for advancing said substrate along a transport path; a supply coil of said web spaced from said path; a laminating head disposed adjacent said path for drawing said web from said coil and applying said web to said substrate, said head having an upstream side formed with a suction box having a suction surface inducing said web to lie thereagainst, said head further comprising a pressure box downstream from said suction box in the direction of travel of said substrate, said pressure box having a gas-permeable surface juxtaposed with said substrate and forming a gas cushion applying said web to said substrate and enabling said web to bond to said substrate; and means for connecting said suction box to a suction source and said pressure box to a pressure source.
Claim 3
Dependent Claim
22 words
The apparatus defined in claim 1 wherein said surface of said suction box comprises a perforated plate covered by a fibrous layer.
Claim 4
Dependent Claim
24 words
The apparatus defined in claim 1 wherein said surface of said pressure box comprises a perforated plate covered by a layer of fibrous material.
Claim 5
Dependent Claim
22 words
The apparatus defined in claim 1 further comprising means for independent adjustment of the positions of said boxes relative to said conveyor.
Claim 6
Dependent Claim
25 words
The apparatus defined in claim 1 wherein said surface of said suction box forms a converging gap with said conveyor in said direction of travel.
Claim 7
Dependent Claim
35 words
The apparatus defined in claim 1 wherein said suction source is the intake side and said pressure source is the discharge side of a common air-displacement device, forming an open air-circulating path with said boxes.
Claim 8
Dependent Claim
30 words
The apparatus defined in claim 6 wherein said air circulation path includes a valve for temporary selective interrupting airflow to and from said pressure box and said suction box, respectively.
Claim 9
Dependent Claim
15 words
The apparatus defined in claim 1 wherein said surface of said suction box is convex.
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) | 1984-04-27 | 1984-10-27 | 1985-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-27 | 1988-10-27 | 1989-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-27 | 1992-10-27 | 1993-04-28 | $7700.00 | Window Closed / Lapsed |