Patent JPS6417484A successfully refreshed from Google Patents.
Patent US3629027A successfully refreshed from Google Patents.
US3629027A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lamination of flexible webs with filamentary adhesive material
Assignee: Gulf Canada Ltd
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Filing: 1968-10-21
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Granted: 1971-12-21
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Expires: 1988-10-21
Abstract
Abstract The invention provides method and apparatus for applying molten adhesive, especially the ''''hot melt'''' type, to a flexible substrate with subsequent adhesive lamination of the substrate, by generating tacky fine filaments of the molten adhesive between a pair of moving surfaces, depositing the tacky filaments onto the flexible substrate while precluding contact between the substrate and the moving surfaces, then adhesively securing the substrate as a lamina to another lamina by means of the deposited tacky filaments.
Inventors
- 👤 Leo M Germain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:52
CPC Classifications
D; D21; D21H; D21H27/00; D21H27/30; D21H27/32; D06; D06M; D06M17/00; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1089; Y10T156/1092; Y10T156/1093; Y10T156/1095
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
34 words
A process as claimed in claim 1 in which the viscous fiber-forming material is applied to a pair of counterrotating rollers between which tacky filaments of adhesive are drawn out as the rollers rotate.
Claim 2
Dependent Claim
41 words
A process as claimed in claim 2 in which the continuous web passes in a line which is in contact with a segment of the curved surface of a roller which intercepts tacky filaments formed by rotation of the counterrotating rollers.
Claim 3
Dependent Claim
45 words
A process as claimed in claim 3 in which the fiber-forming adhesive material is hot-melt adhesive maintAined in a molten state on the counterrotating rollers by heating the rollers, and the filaments thereof are set to an adhesive bond by cooling to ambient room temperature.
Claim 4
Dependent Claim
21 words
A process as claimed in claim 4 in which the continuous webs which are adhesively laminated are both fragile paper tissue.
References Cited (Backward Citations)
US3249485A
Cited
US3239992A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |