US4015049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal coated unsaturated carboxylic acid modified polyolefin article and method of making same
Assignee: Tonen General Sekiyu KK
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Filing: 1975-05-05
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Granted: 1977-03-29
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Expires: 1995-05-05
Abstract
Abstract The adhesive strength of a metallic layer prepared by vacuum metallizing on an unsaturated carboxylic acid modified polyolefin article is substantially increased by heating below the melting point of the polyolefin after the metallization. Preferable heating temperature is 92 DEG -157 DEG C. for polypropylene and heating time is 10 sec. - 1 hour. An aluminum layer obtained by this invention has remaining ratio of 100% after cross cut test.
Inventors
- 👤 Makoto Yoda
- 👤 Kazushige Ishibashi
- 👤 Shozo Wada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:15
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/06; C23C14/14; C23C14/20; C08; C08F; C08F255/00; C08F8/00; C08F8/46; C08K; C08K3/00; C08K3/34; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08L23/10; C08L51/00; C08L51/06; C23C14/58; C23C14/5806; C23C14/584; C08L2207/00; C08L2207/06; C08L2207/066; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31855
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
73 words
A method of forming a metallic layer on the surface of a polyolefin which comprises vapor depositing in a vacuum a metallic layer on a polyolefin article modified by 0.002 to 3 mole percent of one or more unsaturated fatty acids or their functional derivatives and then subjecting the composite article so formed to a heat treatment at a temperature 5° C. to 70° C. lower than the melting point of the polyolefin.
Claim 2
Independent Claim
73 words
A method of forming a metallic layer on the surface of a polyolefin which comprises vapor depositing in a vacuum a metallic layer on a polyolefin article modified by 0.002 to 3 mole percent of one or more unsaturated fatty acids or their functional derivatives and then subjecting the composite article so formed to a heat treatment at a temperature 5° C. to 70° C. lower than the melting point of the polyolefin.
Claim 3
Dependent Claim
27 words
The method according to claim 1 wherein the temperature of the heat treatment is 10° C to 50° C lower than the melting point of the polyolefin.
Claim 4
Dependent Claim
22 words
The method according to claim 1 wherein the time of the heat treatment is from about 10 seconds to about 1 hour.
Claim 5
Dependent Claim
24 words
The method according to claim 1 wherein the time of the heat treatment is about 2 minutes and the temperature is about 150° C.
Claim 6
Dependent Claim
24 words
The method according to claim 1 wherein the time of the heat treatment is about 10 minutes and the temperature is about 140° C.
Claim 7
Dependent Claim
24 words
The method according to claim 1 wherein the time of the heat treatment is about 1 hour and the temperature is about 100° C.
Claim 8
Dependent Claim
18 words
A composite article comprising a metallic layer on a polyolefin film made by the process of claim 1.
Claim 9
Dependent Claim
18 words
The method according to claim 1 wherein the temperature of the heat treatment is 92° to 157° C.
Claim 10
Dependent Claim
26 words
The method according to claim 4 wherein the polyolefin is a modified isotactic polypropylene and the temperature of the heat treatment is 112° to 152° C.
Claim 11
Dependent Claim
18 words
A composite article comprising a metallic layer on a polyolefin film made by the process of claim 5.
Claim 12
Dependent Claim
13 words
A composite article according to claim 10 wherein the metallic layer is aluminum.
Claim 13
Independent Claim
90 words
A method of forming a metallic layer on the surface of a polyolefin which comprises vapor depositing in a vacuum forming a metallic layer on a polyolefin article modified by 0.002 to 3 mole percent of one or more unsaturated fatty acids or their functional derivatives and then subjecting the composite article so formed to a heat treatment at a temperature 5° C. to 70° C. lower than the melting point of the polyolefin wherein the modified polyolefin is selected from the group consisting of modified polyethylene and modified polypropylene
Claim 14
Independent Claim
90 words
A method of forming a metallic layer on the surface of a polyolefin which comprises vapor depositing in a vacuum forming a metallic layer on a polyolefin article modified by 0.002 to 3 mole percent of one or more unsaturated fatty acids or their functional derivatives and then subjecting the composite article so formed to a heat treatment at a temperature 5° C. to 70° C. lower than the melting point of the polyolefin wherein the modified polyolefin is selected from the group consisting of modified polyethylene and modified polypropylene
Claim 15
Dependent Claim
22 words
A method according to claim 12 wherein the metallic layer is selected from the group consisting of aluminum, silver, gold or copper.
Claim 16
Dependent Claim
27 words
The method according to claim 13 wherein the temperature of the heat treatment is 10° C to 50° C lower than the melting point of the polyolefin.
Claim 17
Dependent Claim
18 words
The method according to claim 13 wherein the temperature of the heat treatment is 92° to 157° C.
Claim 18
Dependent Claim
25 words
The method according to claim 13 wherein the polyolefin is modified isotactic polypropylene and the temperature of the heat treatment is 112° to 152° C.
Claim 19
Dependent Claim
22 words
The method according to claim 13 wherein the time of the heat treatment is from about 10 seconds to about 1 hour.
Claim 20
Dependent Claim
24 words
The method according to claim 13 wherein the time of the heat treatment is about 2 minutes and the temperature is about 150° C.
Claim 21
Dependent Claim
24 words
The method according to claim 13 wherein the time of the heat treatment is about 10 minutes and the temperature is about 140° C.
Claim 22
Dependent Claim
24 words
The method according to claim 13 wherein the time of the heat treatment is about 1 hour and the temperature is about 100° C.
Claim 23
Dependent Claim
18 words
A composite article comprising a metallic layer on a polyolefin film made by the process of claim 14.
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) | 1980-03-28 | 1980-09-27 | 1981-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-28 | 1984-09-27 | 1985-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-28 | 1988-09-27 | 1989-03-29 | $7700.00 | Window Closed / Lapsed |