Patent US3936254A successfully refreshed from Google Patents.
US3936254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the continuous manufacture of polymer plates
Assignee: Nippon Paint Co Ltd
•
Filing: 1974-09-16
•
Granted: 1976-02-03
•
Expires: 1994-09-16
Abstract
Abstract A process and apparatus are provided for making polymer plates that inlcude a uniformly thick layer of a resin composition adhering to a base or support plate. The disclosed process includes the steps of applying a resin composition to a base plate. coating the surface of the resin composition with a sheet of thermoplastic material, rolling the covered resin composition and base plate with rollers, cooling the resultant plate, peeling off the sheet material and then drying the resultant polymer plate.
Inventors
- 👤 Teruho Sawada
- 👤 Takeshi Hirayama
- 👤 Kenzo Kokubo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:48
CPC Classifications
B; B29; B29C; B29C43/00; B29C43/22; B29L; B29L2007/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
188 words
An apparatus for the continuous manufacture of photopolymer printing plates having a metallic support structure and a water-inclusive resin composition in adherent contact therewith comprising: (a) means for containing said resin composition; (b) means for continuously transporting said support structure with respect to said resin containing means to permit the deposit of a layer of resin composition on said support structure; (c) means for applying a continuous sheet of flexible thermoplastic sheet material to the surface of said resin composition; (d) a plurality of successive pairs of spaced apart pressure rollers arranged along the transporting means and disposed on opposite sides of said resin composition layer for applying pressure to said layer of resin composition to uniformly spread said layer over said support structure; (e) means for removing said sheet material from said layer of resin after the application of pressure thereto; (f) means for cooling said layer of resin composition, said thermoplastic sheet material and said support structure; and (g) means for drying said layer of resin composition and said support structure for a time sufficient to firmly secure said layer of resin to said support structure.
Claim 2
Independent Claim
188 words
An apparatus for the continuous manufacture of photopolymer printing plates having a metallic support structure and a water-inclusive resin composition in adherent contact therewith comprising: (a) means for containing said resin composition; (b) means for continuously transporting said support structure with respect to said resin containing means to permit the deposit of a layer of resin composition on said support structure; (c) means for applying a continuous sheet of flexible thermoplastic sheet material to the surface of said resin composition; (d) a plurality of successive pairs of spaced apart pressure rollers arranged along the transporting means and disposed on opposite sides of said resin composition layer for applying pressure to said layer of resin composition to uniformly spread said layer over said support structure; (e) means for removing said sheet material from said layer of resin after the application of pressure thereto; (f) means for cooling said layer of resin composition, said thermoplastic sheet material and said support structure; and (g) means for drying said layer of resin composition and said support structure for a time sufficient to firmly secure said layer of resin to said support structure.
Claim 3
Dependent Claim
72 words
The apparatus of claim 1 wherein said means for applying and removing the continuous sheet of sheet material to and from the surface of said resin composition is a continuous loop of sheet material suspended by means of a pair of oppositely disposed rollers, said loop of sheet material being disposed along and covering the surface of said resin composition and passing between said plurality of successive pairs of spaced pressure rollers.
Claim 4
Dependent Claim
29 words
The apparatus of claim 1 wherein said support structure is a continuous coil of metallic material and said means for continuously transporting said support structure is an endless belt.
Claim 5
Dependent Claim
21 words
The appartus of claim 1, wherein the cooling means comprises two separate cooling chambers which can be maintained at different temperatures.
References Cited (Backward Citations)
US2060897A
Cited
US2590186A
Cited
US3067469A
Cited
US3167442A
Cited
US3558380A
Cited
US3630746A
Cited
US3634565A
Cited
US3845182A
Cited
US3844829A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-02 | 1979-08-04 | 1980-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-02 | 1983-08-04 | 1984-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-02 | 1987-08-04 | 1988-02-03 | $7700.00 | Window Closed / Lapsed |