US5037702A
Expired / Lapsed
US
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Erasably, markable articles and methods of making such articles
Assignee: Dennison Manufacturing Co
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Filing: 1989-06-02
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Granted: 1991-08-06
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Expires: 2009-06-02
Abstract
Abstract An erasably markable article formed of a coated substrate that is markable with dry wipe inks without causing permanent discernible distortion of the substrate. The surface after marking is substantially fully erasable. The surface is provided by a smooth coating of cured lacquer preferably a radiation cured lacquer, for example, electron beam radiation cured urethane acrylate. The substrate may be flexible, for example, a biaxially oriented polypropylene multilayer film having a closed cell foam-like core wherein the substrate exhibits electrostatic cling properties. The substrate may also be adhesive coated paper or may be relatively inflexible pressboard.
Inventors
- 👤 Warren R. Pitts
- 👤 Peter West
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:09
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/14; D21H21/30; D21H25/00; D21H25/04; D21H25/06; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31565; Y10T428/31573; Y10T428/31587; Y10T428/31591; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
57 words
An erasably markable article comprising a film substrate having two surfaces, wherein at least surface of the film substrate is markable with dry wipe inks without permanent discernible distortion of the film substrate, said surface after marking being substantially fully erasable by dry erasure, and said markable surface being provided by a smooth coatign of cured lacquer.
Claim 2
Dependent Claim
57 words
An erasably markable article comprising a film substrate having two surfaces, wherein at least surface of the film substrate is markable with dry wipe inks without permanent discernible distortion of the film substrate, said surface after marking being substantially fully erasable by dry erasure, and said markable surface being provided by a smooth coatign of cured lacquer.
Claim 3
Independent Claim
117 words
A method for producing an erasably markable article comprising a film substrate having two faces wherein at least one face of the film substrate is markable with dry wipe inks without permanent discernible distortion of the film substrate, the method comprising: a. forming over at least one face of the film substrate a continuous layer of curable lacquer, and b. exposing the article to an energy source to cure the lacquer, resultign in a smooth coating of cured lacquer forming said markable surface wherein said markable surface has the property that it prevents permanent discernible distortion of the film substrate after marking with dry wipe ink and is substantially fully erasable after said marking by dry erasure.
Claim 4
Independent Claim
117 words
A method for producing an erasably markable article comprising a film substrate having two faces wherein at least one face of the film substrate is markable with dry wipe inks without permanent discernible distortion of the film substrate, the method comprising: a. forming over at least one face of the film substrate a continuous layer of curable lacquer, and b. exposing the article to an energy source to cure the lacquer, resultign in a smooth coating of cured lacquer forming said markable surface wherein said markable surface has the property that it prevents permanent discernible distortion of the film substrate after marking with dry wipe ink and is substantially fully erasable after said marking by dry erasure.
Claim 5
Dependent Claim
13 words
The article of claim 1, wherein the substrate comprises polyester or polypropylene film.
Claim 6
Dependent Claim
53 words
The article of claim 1, wherein the substrate is a statically chargeable, biaxially oriented polypropylene multilayer film having a closed cell, foam-like core, said coated substrate having the characteristic that it has electrostatic cling properties and said cured lacquer coating prevents permanent discernible distortion of the substrate after marking the dry wip ink.
Claim 7
Dependent Claim
14 words
The article of claim 1, wherein the cured lacquer comprises a radiation cured lacquer.
Claim 8
Dependent Claim
13 words
The article of claim 9, wherein the radiation cured lacquer comprises urethane acrylate.
Claim 9
Dependent Claim
15 words
An article in accordance with claim 1, wherein the erasably markable surface is dry erasable.
Claim 10
Dependent Claim
15 words
An article in accordance with claim 1, wherein the erasably markable surface is wet erasable.
Claim 11
Dependent Claim
24 words
An article in accordance with claim 1, wherein the erasably markable surface is capable of being marked and then erased more than 1,000 times.
Claim 12
Dependent Claim
45 words
An article in accordance with claim 1, wherein the surface tension of the smooth coating of cured lacquer is greater than the surface tension of dry wipe inks, said surface tension of the coating of cured lacquer being at least 22 dynes/cm. at 22° C.
Claim 13
Dependent Claim
51 words
An article in accordance with claim 1, wherein the erasably markable article is erasably markable with dry wipe inks having a surface tension at 22° C. of between about 22 and 30 dyne/cm, and the surface tension of said cured lacquer coating is greater than the surface tension of the ink.
Claim 14
Dependent Claim
18 words
A method in accordance with claim 2, wherein prior to step (a), the one surface is corona treated.
Claim 15
Dependent Claim
15 words
A method in accordance with claim 2, wherein lacquer is cured by exposing a heat.
Claim 16
Dependent Claim
19 words
A method in accordance with claim 2, wherein lacquer is cured by exposing the electron beam and/or ultraviolet radiation.
Claim 17
Dependent Claim
16 words
A method in accordance with claim 2, wherein the substrate is a polyester or polypropylene film.
Claim 18
Dependent Claim
37 words
A method in accordance with claim 2, wherein the substrate is a statically chargeable, biaxially oriented polypropylene multilayer film having a closed cell, foam-like core, said coated substrate having the characteristic that it has electrostatic cling properties.
Claim 19
Dependent Claim
15 words
A method in accordance with claim 2, wherein the cured lacquer comprises radiation cured lacquer.
Claim 20
Dependent Claim
13 words
A method in accordance with claim 2, wherein the lacquer comprises urethane acrylate.
Claim 21
Dependent Claim
69 words
An erasably markable article comprising a substrate comprised of a sheet of material elected from the group comprising of paper and cardboard, wherein at least one face of the substrate is markable with dry wip inks, said face after marking being substantially fully erasable by dry erasure, and said markable surface being provided by a smooth coating of cured lacquer, which smooth coating does not substantially impregnate the substrate.
Claim 22
Dependent Claim
69 words
An erasably markable article comprising a substrate comprised of a sheet of material elected from the group comprising of paper and cardboard, wherein at least one face of the substrate is markable with dry wip inks, said face after marking being substantially fully erasable by dry erasure, and said markable surface being provided by a smooth coating of cured lacquer, which smooth coating does not substantially impregnate the substrate.
Claim 23
Dependent Claim
12 words
An article in accordance with claim 19, wherein the substrate is paper.
Claim 24
Dependent Claim
12 words
An article in accordance with claim 19, wherein the substrate is cardboard.
Claim 25
Dependent Claim
16 words
An article in accordance with claim 19, wherein the cured lacquer comprises a radiation cured lacquer.
Claim 26
Dependent Claim
15 words
An article in accordance with claim 19, wherein the radiation cured lacquer comprises urethane acrylate.
Claim 27
Dependent Claim
15 words
An article in accordance with claim 19, wherein the erasably markable surface is wet erasable.
Claim 28
Dependent Claim
24 words
An article in accordance with claim 19, wherein the erasably markable surface is capable of being marked and then erased more than 2,000 times.
Claim 29
Dependent Claim
45 words
An article in accordance with claim 19 wherein the surface tension of the smooth coating of cured lacquer is greater than the surface tension of dry wipe inks, said surface tension of the coating is cured lacquer being at least 22 dynes/cm. at 22° C.
References Cited (Backward Citations)
US4393103A
Cited
US4603079A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-08-05 | 1995-02-04 | 1995-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-05 | 1999-02-04 | 1999-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-05 | 2003-02-04 | 2003-08-06 | $7700.00 | Window Closed / Lapsed |