US3860440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing a highly glossy sheet material
Assignee: Kurashiki Rayon Co Ltd
•
Filing: 1973-03-26
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Granted: 1975-01-14
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Expires: 1993-03-26
Abstract
Abstract Highly glossy sheet material is manufactured by applying a layer of polymer solution to a sufficiently smooth surface warmed at a suitable temperature, superimposing a substrate having a relatively smooth surface onto the layer of said polymer solution before it loses fluidity and it is not solidified, coagulating substantially the layer of said polymer solution sandwiched between said sufficiently smooth surface and said substrate by removing solvent from the layer of said polymer solution through the substrate, and thereafter peeling off said substrate to which the coagulated polymer layer is adhered from said sufficiently smooth surface.
Inventors
- 👤 Shogo Nakajo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:13
CPC Classifications
D; D06; D06N; D06N3/00; D06N3/0086; D06N3/0095; D06N3/04; D06N3/06; D06N3/08
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
120 words
A METHOD OF MANUFACTURING HIGHLY GLOSSY SHEET MATERIAL WHICH COMPRISES: A. APPLYING A LAYER OF POLYMER SOLUTION COMPRISING A POLYURETHANE ELASTOMER AND A SOLVENT THEREFOR TO A HIGHLY SMOOTH-SURFACED BODY KEPT AT A TEMPERATURE OF ABOUT 40*-85*C, TO EVAPORATE THE SOLVENT FROM THE POLYMER SOLUTION, B. SUPERIMPOSING A SUBSTRATE WHICH HAS A SUBSTANTIALLY SMOOTH SURFACE AND IS PERMEABLE TO GAS AND VAPOR ONTO THE LAYER OF SAID POLYMER SOLUTION BEFORE SAID LAYER IS COAGULATED, C. SUBSTANTIALLY COAGULATING SAID LAYER OF SAID POLYMER SOLUTION SANDWICHED BETWEEN SAID BODY AND SAID SUBSTRATE BY REMOVING THE SOLVENT FROM THE LAYER OF SAID POLYMER SOLUTION THROUGH THE SUBSTRATE, AND D. PEELING OFF SAID SUBSTRATE TO WHICH THE COAGULATED POLYMER IS ADHERED FROM SAID BODY.
Claim 2
Independent Claim
120 words
A METHOD OF MANUFACTURING HIGHLY GLOSSY SHEET MATERIAL WHICH COMPRISES: A. APPLYING A LAYER OF POLYMER SOLUTION COMPRISING A POLYURETHANE ELASTOMER AND A SOLVENT THEREFOR TO A HIGHLY SMOOTH-SURFACED BODY KEPT AT A TEMPERATURE OF ABOUT 40*-85*C, TO EVAPORATE THE SOLVENT FROM THE POLYMER SOLUTION, B. SUPERIMPOSING A SUBSTRATE WHICH HAS A SUBSTANTIALLY SMOOTH SURFACE AND IS PERMEABLE TO GAS AND VAPOR ONTO THE LAYER OF SAID POLYMER SOLUTION BEFORE SAID LAYER IS COAGULATED, C. SUBSTANTIALLY COAGULATING SAID LAYER OF SAID POLYMER SOLUTION SANDWICHED BETWEEN SAID BODY AND SAID SUBSTRATE BY REMOVING THE SOLVENT FROM THE LAYER OF SAID POLYMER SOLUTION THROUGH THE SUBSTRATE, AND D. PEELING OFF SAID SUBSTRATE TO WHICH THE COAGULATED POLYMER IS ADHERED FROM SAID BODY.
Claim 3
Dependent Claim
13 words
A method according to claim 1, wherein the smooth-surfaced body is a roll.
Claim 4
Dependent Claim
29 words
A method according to claim 1, wherein the concentration of the polymer solution applied to the smooth-surfaced body is in the range of about 10 - 25 weight percent.
Claim 5
Dependent Claim
25 words
A method according to claim 1, wherein the viscosity of the polymer solution applied to the smooth-surfaced body is 1 to 30 poises at 40*C.
Claim 6
Dependent Claim
29 words
A method according to claim 1, wherein the substrate is superimposed when the concentration of the polymer solution is in the range of about 30 to 40 weight percent.
Claim 7
Dependent Claim
30 words
A method according to claim 1, wherein the substrate is superimposed when the viscosity of the polymer solution is in the range of about 50 to 100 poises at 40*C.
Claim 8
Dependent Claim
31 words
A method according to claim 1 in which heat is applied at step (c) from the side of the substrate which is not contacted with the layer of said polymer solution.
Claim 9
Dependent Claim
19 words
A method according to claim 7, wherein heat is applied from the back of the substrate by hot air.
Claim 10
Dependent Claim
19 words
A method according to claim 7, wherein heat is applied from the back of the substrate by electric heaters.
Claim 11
Dependent Claim
25 words
A method according to claim 1, wherein the polymer in the polymer solution is a polyurethane elastomer blended with less than 50% of another polymer.
Claim 12
Dependent Claim
13 words
A method according to claim 10, wherein said another polymer is polyvinyl chloride.
Claim 13
Dependent Claim
25 words
A method according to claim 1, in which said solvent is selected from the group consisting of dimethylformamide, dimethylacetoamide, dimethylsulfoxide, tetrahydrofuran, dioxane and mixtures thereof.
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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) | 1978-01-13 | 1978-07-15 | 1979-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-13 | 1982-07-15 | 1983-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-13 | 1986-07-15 | 1987-01-14 | $7700.00 | Window Closed / Lapsed |