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US3767451A
Expired / Lapsed
US
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Method for manufacture of manifolding paper coated with pressure rupturable materials
Assignee: Appvion LLC
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Filing: 1971-11-10
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Granted: 1973-10-23
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Expires: 1991-11-10
Abstract
Abstract Paper coated on or off the paper machine with pressure rupturable materials which includes calendering the paper immediately before application of the aqueous emulsion coating containing the pressure rupturable materials.
Inventors
- 👤 T Busch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:29
CPC Classifications
D; D21; D21H; D21H23/00; D21H23/02; D21H23/22; D21H23/30; B; B41; B41M; B41M5/00; B41M5/124; B41M5/1246; B41M5/165; B41M5/1655; D21H19/00; D21H23/52; D21H23/56; D21H5/00; D21H5/0005; D21H5/0007; D21H5/0025; D21H5/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
The method as claimed in claim 1 in which the moisture is removed from the coated sheet during travel through the drying section by directing hot air jets onto the coated side of the sheet while the sheet is supported in a relaxed state.
Claim 2
Dependent Claim
41 words
The method as claimed in claim 2 in which the support for the coated sheet of paper, during travel through the drying section, comprises a vapor permeable endless belt which enables moisture to be removed from the sheet through the belt.
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) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |