US3873345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of finishing coated paper
Assignee: Warren SD Co
•
Filing: 1973-02-12
•
Granted: 1975-03-25
•
Expires: 1993-02-12
Abstract
Abstract Production of high-gloss coated paper with heated calendering apparatus through the use of a coating composition comprising pigment and a hard latex binder.
Inventors
- 👤 Jay H Vreeland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:53
CPC Classifications
D; D21; D21H; D21H25/00; D21H25/08; D21H25/12; D21H25/14; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906; Y10T428/31971; Y10T428/31993
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
24 words
IN A METHOD OF FINISHING BY HEATED CALENDER MEANS A PAPER WEB TO WHICH AN AQUEOUS COATING COMPOSITION HAS BEEN APPLIED, THE STEPS OF:
Claim 2
Dependent Claim
24 words
IN A METHOD OF FINISHING BY HEATED CALENDER MEANS A PAPER WEB TO WHICH AN AQUEOUS COATING COMPOSITION HAS BEEN APPLIED, THE STEPS OF:
Claim 3
Dependent Claim
37 words
APPLYING TO THE SURFACE OF AT LEAST ONE SIDE OF THE PAPER WEB AN AQUEOUS COMPOSITION COMPRISING PAPER COATING PIGMENT AND A BINDER CONSISTING ESSENTIALLY OF A POLYMER LATEX HAVING A GLASS TRANSITION TEMPERATURE GREATER THAN 100*F
Claim 4
Dependent Claim
37 words
APPLYING TO THE SURFACE OF AT LEAST ONE SIDE OF THE PAPER WEB AN AQUEOUS COMPOSITION COMPRISING PAPER COATING PIGMENT AND A BINDER CONSISTING ESSENTIALLY OF A POLYMER LATEX HAVING A GLASS TRANSITION TEMPERATURE GREATER THAN 100*F
Claim 5
Dependent Claim
13 words
DRYING THE COATING AT A TEMPERATURE BELOW GLASS TRANSITION TEMPERATURE OF THE POLYMER
Claim 6
Dependent Claim
13 words
DRYING THE COATING AT A TEMPERATURE BELOW GLASS TRANSITION TEMPERATURE OF THE POLYMER
Claim 7
Dependent Claim
23 words
The method in accordance with claim 1 wherein the binder has a hardness/temperature relationship as represented by the curve shown in FIG. 1.
Claim 8
Dependent Claim
13 words
drying the coating at a temperature below glass transition temperature of the polymer
Claim 9
Dependent Claim
13 words
drying the coating at a temperature below glass transition temperature of the polymer
Claim 10
Dependent Claim
16 words
finishing the coating by hot calendering at a temperature above glass transition temperature of the polymer.
Claim 11
Dependent Claim
16 words
finishing the coating by hot calendering at a temperature above glass transition temperature of the polymer.
Claim 12
Dependent Claim
24 words
The method in accordance with claim 1 wherein the binder is selected from the group consisting of vinyl acetate, styrene-isoprene and acrylic polymer latices.
Claim 13
Dependent Claim
16 words
FINISHING THE COATING BY HOT CALENDERING AT A TEMPERATURE ABOVE GLASS TRANSITION TEMPERATURE OF THE POLYMER.
Claim 14
Dependent Claim
16 words
FINISHING THE COATING BY HOT CALENDERING AT A TEMPERATURE ABOVE GLASS TRANSITION TEMPERATURE OF THE POLYMER.
Claim 15
Dependent Claim
15 words
The method in accordance with claim 1 wherein the coating is finished by gloss calendering.
Claim 16
Dependent Claim
14 words
The method in accordance with claim 1 wherein the coating is finished by supercalendering.
Claim 17
Dependent Claim
10 words
A coated paper web made in accordance with claim 1.
Claim 18
Dependent Claim
10 words
A coated paper web made in accordance with claim 4.
Claim 19
Dependent Claim
10 words
A coated paper web made in accordance with claim 5.
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) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |