Patent US4933123A successfully refreshed from Google Patents.
US4933123A
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Surface treatment method
Assignee: Material Engineering Technology Laboratory Inc
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Filing: 1988-06-29
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Granted: 1990-06-12
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Expires: 2008-06-29
Abstract
Abstract A surface treatment method for improving the adhesiveness of a surface of a molded article made of a polyolefin resin with a printing ink, which entails irradiating the surface with an abundance of high-energy ultraviolet radiation from a high-output low-pressure mercury vapor lamp having an envelope made of synthetic quartz glass, and wherein the lamp has a wattage per unit lamp length of about 0.1-0.5 W/mm.
Inventors
- 👤 Takao Yoshida
- 👤 Keinosuke Isono
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:54
CPC Classifications
B; B29; B29C; B29C59/00; B29C59/16; B29C59/165; B29C35/00; B29C35/02; B29C35/08; B29C35/0805; B29C2035/0827; B29K; B29K2023/00; B29K2023/04; B29K2023/06; B29K2023/10; B29K2023/12; B29L; B29L2023/00; B29L2031/00; B29L2031/712; B29L2031/7158; B29L2031/753; B29L2031/7544
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
69 words
A surface treatment method for improving the adhesiveness of a surface of a molded article, consisting essentially of a polyolefin resin with a printing ink, which comprises irradiating the surface with an abundance of high-energy ultraviolet radiation from a high-output low-pressure mercury vapor lamp having an envelope made of synthetic quartz glass, and wherein said mercury vapor lamp has a wattage per unit lamp length of about 0.1-0.5 W/mm.
Claim 2
Dependent Claim
69 words
A surface treatment method for improving the adhesiveness of a surface of a molded article, consisting essentially of a polyolefin resin with a printing ink, which comprises irradiating the surface with an abundance of high-energy ultraviolet radiation from a high-output low-pressure mercury vapor lamp having an envelope made of synthetic quartz glass, and wherein said mercury vapor lamp has a wattage per unit lamp length of about 0.1-0.5 W/mm.
Claim 3
Dependent Claim
17 words
The surface treatment method as claimed in claim 1, wherein the polyolefin resin is a polyethylene resin.
Claim 4
Dependent Claim
56 words
The surface treatment method as claimed in claim 1, wherein the molded article is a container formed by blow molding, the container having a wall constituting the surface to be printed or areas adjacent thereto having a thickness of 1 mm or less, and wherein the container is rendered printable with an ultraviolet radiation-curable printing ink.
Claim 5
Dependent Claim
18 words
The surface treatment method as claimed in claim 3, wherein the container is a container for medical fluids.
Claim 6
Dependent Claim
22 words
The surface treatment method as claimed in claim 1, wherein the molded article is a syringe barrel formed of a polypropylene resin.
Claim 7
Dependent Claim
22 words
The surface treatment method as claimed in claim 5, wherein the syringe barrel is rendered printable with an ultraviolet radiation-curable printing ink.
Claim 8
Dependent Claim
17 words
The surface treatment method as claimed in claim 5, wherein the syringe barrel is for medical use.
Claim 9
Dependent Claim
23 words
The surface treatment method as claimed in claim 1, wherein said high-energy ultraviolet radiation comprises wavelengths of about 185 nm and 254 nm.
Claim 10
Dependent Claim
24 words
The surface treatment method as claimed in claim 1, wherein said polyethylene resin has a density of 0.92 and a melt index of 2.
Claim 11
Dependent Claim
25 words
The surface treatment method as claimed in claim 5, wherein said polypropylene resin has a density of 0.90 and a melt flow rate of 25.
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) | 1993-06-11 | 1993-12-11 | 1994-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-11 | 1997-12-11 | 1998-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-11 | 2001-12-11 | 2002-06-12 | $7700.00 | Window Closed / Lapsed |