Patent US4774133A successfully refreshed from Google Patents.
US4774133A
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US
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Article containing microencapsulated materials
Assignee: 3M Co
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Filing: 1986-06-30
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Granted: 1988-09-27
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Expires: 2006-06-30
Abstract
Abstract Articles comprising a thermoplastic substrate bearing rupturable microcapsules in a binder on at least one surface thereof. These articles can be applied by means of heat and pressure to porous objects. The process of applying the articles to porous objects further results in partially embedding the microcapsules in the substrate. Thermoplastic substrates having rupturable microcapsules partially embedded therein, but not having a binder, are another aspect of this invention.
Inventors
- 👤 Richard H. Doree
- 👤 Josef V. Ugro, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:04
CPC Classifications
B; B44; B44C; B44C1/00; B44C1/16; B44C1/165; B44C1/17; B44C1/1712; B01; B01J; B01J13/00; B01J13/02; B01J13/025; D; D06; D06N; D06N7/00; D06N7/0005; D06N7/0039; D06N7/0052; F; F28; F28D; F28D20/00; F28D20/02; F28D20/023; Y; Y02; Y02E; Y02E60/00; Y02E60/14; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249994; Y10T428/249995; Y10T428/249997; Y10T428/25; Y10T428/254; Y10T428/29; Y10T428/2982; Y10T428/2984; Y10T428/2985; Y10T428/2987; Y10T428/31504; Y10T428/31855; Y10T428/31935; Y10T428/31938
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
121 words
An article consisting of: (A) a thermoplastic polymer substrate, (B) on at least one surface of said substrate a layer comprising rupturable microcapsules carrying a liquid therein and a binder resin adhering the microcapsules to the substrate, said substrate bearing said microcapsules being capable of softening sufficiently when exposed to heat to allow said microcapsules to become partially embedded in said surface by means of applied pressure, said microcapsules being sufficiently strong to avoid rupture when exposed to the heat and pressure required to soften said substrate and embed said microcapsules, said substrate further being capable of softening sufficiently so that the thermoplastic material of the polymeric substrate can flow sufficiently to allow the substrate to become bonded to porous objects.
Claim 2
Dependent Claim
121 words
An article consisting of: (A) a thermoplastic polymer substrate, (B) on at least one surface of said substrate a layer comprising rupturable microcapsules carrying a liquid therein and a binder resin adhering the microcapsules to the substrate, said substrate bearing said microcapsules being capable of softening sufficiently when exposed to heat to allow said microcapsules to become partially embedded in said surface by means of applied pressure, said microcapsules being sufficiently strong to avoid rupture when exposed to the heat and pressure required to soften said substrate and embed said microcapsules, said substrate further being capable of softening sufficiently so that the thermoplastic material of the polymeric substrate can flow sufficiently to allow the substrate to become bonded to porous objects.
Claim 3
Dependent Claim
38 words
The article of claim 1 wherien said softening occurs under temperature conditions of from about 100° C. to about 250° C. and said partial embedding occurs under pressure conditions of from about 0.5 psig to about 100 psig.
Claim 4
Dependent Claim
20 words
The article of claim 1 wherein said substrate is selected from the group consisting of polyolefin polymers and polyvinyl polymers.
Claim 5
Dependent Claim
10 words
The article of claim 1 wherein said microcapsules comprise gelatin.
Claim 6
Dependent Claim
19 words
The article of claim 4 wherein said microcapsules have an average diameter between about 3 and about 30 micrometers.
Claim 7
Dependent Claim
11 words
The article of claim 1 wherein said microcapsules comprise aminoplast resin.
Claim 8
Dependent Claim
19 words
The article of claim 6 wherein said microcapsules have an average diameter between about 3 and about 30 micrometers.
Claim 9
Dependent Claim
19 words
The article of claim 1 wherein said microcapsules have an average diameter between about 3 and about 30 micrometers.
References Cited (Backward Citations)
US4493869A
Cited
US4528226A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-09-27 | 1992-03-28 | 1992-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-27 | 1996-03-28 | 1996-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-27 | 2000-03-28 | 2000-09-27 | $7700.00 | Window Closed / Lapsed |