US3911191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated paper products
Assignee: Blandin Paper Co
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Filing: 1972-09-14
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Granted: 1975-10-07
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Expires: 1992-09-14
Abstract
Abstract The process of coating a paper base with a hot melt coating composition which is comprised of at least 50 weight percent of a coating pigment or a mixture thereof dispersed in an undiluted, heat extrudable binder (e.g., a normally solid thermoplastic resin), said binder comprising less than 50 weight percent of the total weight of the coating composition. For example, a publication paper is prepared by coating an uncoated, prefinished, ground wood paper on both sides with a coating composition that comprises a normally solid ethylene polymer or copolymer and a clay pigment wherein the amount of pigment is greater than 50% by weight of said coating. The total coating weight (both sides) is less than 15 grams per square meter (gms/M2).
Inventors
- 👤 Samuel L Guastella
- 👤 Jr Jerry J Larrivee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:24
CPC Classifications
B; B05; B05D; B05D1/00; B05D1/26; G; G03; G03D; G03D15/00; G03D15/06; Y; Y10; Y10T; Y10T428/00; Y10T428/27; Y10T428/273; Y10T428/277; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31899; Y10T428/31902
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
105 words
COATED PAPER THAT IS INK-RECEPTIVE AND HAS GOOD PRINTING PROPERTIES WHICH COMPRISES A PAPER WEB WHICH HAS BEEN EXTRUSION COATED WITH A RIGID COATING BLADE ON AT LEAST ONE SIDE WITH A MOLTEN HOT MELT COATING COMPOSITION, SAID MOLTEN HOT MELT COATING COMPOSITION CONSISTING ESSENTIALLY OF AT LEAST 50 PERCENT BY WEIGHT OF A COATING PIGMENT OR MIXTURE OF COATING PIGMENTS DISPERSED IN A DILUENT-FREE, HEAT EXTRUDABLE BINDER OR MIXTURE OF BINDERS, SAID HEAT EXTRUDABLE BINDER HAVING AN ASTM MELT INDEX OF ABOUT 30-400, SAID MOLTEN HOT MELT COATING COMPOSITION HAVING A TOTAL COATING WEIGHT OF 3-15 GRAMS PER SQUARE METER OF SAID PAPER WEB.
Claim 2
Dependent Claim
105 words
COATED PAPER THAT IS INK-RECEPTIVE AND HAS GOOD PRINTING PROPERTIES WHICH COMPRISES A PAPER WEB WHICH HAS BEEN EXTRUSION COATED WITH A RIGID COATING BLADE ON AT LEAST ONE SIDE WITH A MOLTEN HOT MELT COATING COMPOSITION, SAID MOLTEN HOT MELT COATING COMPOSITION CONSISTING ESSENTIALLY OF AT LEAST 50 PERCENT BY WEIGHT OF A COATING PIGMENT OR MIXTURE OF COATING PIGMENTS DISPERSED IN A DILUENT-FREE, HEAT EXTRUDABLE BINDER OR MIXTURE OF BINDERS, SAID HEAT EXTRUDABLE BINDER HAVING AN ASTM MELT INDEX OF ABOUT 30-400, SAID MOLTEN HOT MELT COATING COMPOSITION HAVING A TOTAL COATING WEIGHT OF 3-15 GRAMS PER SQUARE METER OF SAID PAPER WEB.
Claim 3
Dependent Claim
20 words
Coated paper of claim 1 in which said pigment is selected from the group consisting of clay and titanium dioxide.
Claim 4
Dependent Claim
17 words
Coated paper of claim 2 wherein said binder comprises a normally solid polymer or copolymer of ethylene.
Claim 5
Dependent Claim
19 words
Coated paper of claim 3 in which both sides of the paper have been coated with said coating composition.
Claim 6
Dependent Claim
39 words
Coated paper of claim 1 wherein said pigment is a mixture of clay and titanium dioxide, wherein said binder comprises both polyethylene and an ethylene/vinyl acetate copolymer, and wherein said pigment to binder ratio is at least about 1.5:1.
Claim 7
Dependent Claim
15 words
Coated paper of claim 1 wherein the paper, not including the coating, weighs 30-75 grams/M2.
Claim 8
Dependent Claim
25 words
Coated paper of claim 6 wherein said paper is an uncoated ground wood paper and wherein the total coating weight is less than 15 grams/M2.
Claim 9
Dependent Claim
17 words
Coated papaer of claim 7 which is coated on both sides and is a publication grade paper.
Claim 10
Dependent Claim
23 words
Coated paper of claim 7 which is coated on only one side with said coating composition and which is a label grade paper.
References Cited (Backward Citations)
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US3501330A
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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 |