US4698294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lamination of photopolymerizable film onto a substrate employing an intermediate nonphotosensitive liquid layer
Assignee: EIDP Inc
•
Filing: 1986-09-12
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Granted: 1987-10-06
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Expires: 2006-09-12
Abstract
Abstract Lamination of a photopolymerizable film onto a substrate employs an intermediate nonphotosensitive liquid which is substantially all monomer.
Inventors
- 👤 Tit-Kueng Lau
- 👤 Abraham B. Cohen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:52
CPC Classifications
B; B32; B32B; B32B37/00; G; G03; G03F; G03F7/00; G03F7/16; G03F7/161; B32B37/0038; G03F7/004; G03F7/09; G03F7/11; H; H05; H05K; H05K3/00; H05K3/22; H05K3/28; H05K3/281; H05K2203/00; H05K2203/05; H05K2203/0562; H05K2203/0577; Y; Y10; Y10S; Y10S430/00; Y10S430/155
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
154 words
A process for laminating a photopolymerizable film to a substrate which comprises the steps of (a) applying to a substrate surface or a photopolymerizable film surface which is preformed and nonliquid, a liquid which is substantially nonphotosensitive to actinic radiation and which consists essentially of at least one nongaseous ethylenically unsaturated compound containing at least one ethylenic group having a boiling point above 100° C. at normal atmospheric pressure and being capable of forming a high polymer by addition polymerization (b) laminating the substrate and preformed nonliquid photopolymerizable film through the applied liquid whereby excess liquid is present during the lamination and is forced along at least one edge of the laminated substrate and film whereby adherence is obtained of the substrate to the film through the liquid; (c) exposing imagewise to actinic radiation the photopolymerizable film and the liquid; (d) removing unexposed areas of the photopolymerizable film and the liquid from the substrate.
Claim 2
Dependent Claim
154 words
A process for laminating a photopolymerizable film to a substrate which comprises the steps of (a) applying to a substrate surface or a photopolymerizable film surface which is preformed and nonliquid, a liquid which is substantially nonphotosensitive to actinic radiation and which consists essentially of at least one nongaseous ethylenically unsaturated compound containing at least one ethylenic group having a boiling point above 100° C. at normal atmospheric pressure and being capable of forming a high polymer by addition polymerization (b) laminating the substrate and preformed nonliquid photopolymerizable film through the applied liquid whereby excess liquid is present during the lamination and is forced along at least one edge of the laminated substrate and film whereby adherence is obtained of the substrate to the film through the liquid; (c) exposing imagewise to actinic radiation the photopolymerizable film and the liquid; (d) removing unexposed areas of the photopolymerizable film and the liquid from the substrate.
Claim 3
Dependent Claim
12 words
The process of claim 1 wherein the substrate has a raised relief.
Claim 4
Dependent Claim
16 words
The process of claim 2 wherein the liquid has a viscosity not greater than 400 centipose.
Claim 5
Dependent Claim
16 words
The process of claim 3 wherein the liquid has a viscosity not greater than 200 centipose.
Claim 6
Dependent Claim
19 words
The process of claim 1 wherein the liquid has a viscosity in the range from 5 to 50 centipoise.
Claim 7
Dependent Claim
22 words
The process of claim 1 wherein a hold time of not less than 15 minutes is present between steps (c) and (d).
Claim 8
Dependent Claim
13 words
The process of claim 1 wherein the substrate has a plurality of holes.
Claim 9
Dependent Claim
15 words
The process of claim 1 wherein excess liquid is removed between steps (b) and (c).
Claim 10
Dependent Claim
17 words
The process of claim 8 wherein a spray of another liquid is used to remove the liquid.
Claim 11
Dependent Claim
11 words
The process of claim 8 wherein the other liquid is hydrophilic.
Claim 12
Dependent Claim
11 words
The process of claim 8 wherein the other liquid comprises water.
Claim 13
Dependent Claim
11 words
The process of claim 1 wherein the substrate is substantially planar.
Claim 14
Dependent Claim
16 words
The process of claim 1 wherein the liquid is substantially free of a thermal crosslinking agent.
Claim 15
Dependent Claim
13 words
The process of claim 1 wherein the liquid contains a thermal crosslinking agent.
Claim 16
Dependent Claim
31 words
The process of claim 1 wherein the photopolymerizable film is solder mask and subsequent to step (d) exposed portions of the substrate and the exposed film is contacted with molten solder.
Claim 17
Dependent Claim
15 words
The process of claim 1 wherein the compound has at least one terminal ethylenic group.
Claim 18
Dependent Claim
15 words
The process of claim 15 wherein the compound has at least two terminal ethylenic groups.
Claim 19
Dependent Claim
16 words
The process of claim 1 wherein at least two liquid layers are applied in step (a).
Claim 20
Dependent Claim
19 words
The process of claim 1 wherein liquid is applied to the substrate surface and film surface in step (a).
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-10-05 | 1991-04-06 | 1991-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-05 | 1995-04-06 | 1995-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-05 | 1999-04-06 | 1999-10-06 | $7700.00 | Window Closed / Lapsed |