EP0189656A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
On page fragrance sampling device
Assignee: 3M Co
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Filing: 1985-12-09
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Granted: —
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Expires: 2005-12-09
Abstract
Abstract Microencapsulated materials are released by rupturing of an adhesive layer on a substrate containing the capsules.
Inventors
- 👤 Jack W. C/O Minnesota Mining And Charbonneau
- 👤 Keith E. C/O Minnesota Mining And Relyea
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 18:38
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/02; A61K8/11; G; G09; G09F; G09F3/00; A45; A45D; A45D40/00; A45D40/0087; A61F; A61F13/00; A61F13/15; A61F13/56; A61F13/5605; A61F13/5611; A61L; A61L9/00; A61L9/015; A61L9/04; A61L9/12; A61Q; A61Q13/00; B; B01; B01J; B01J13/00; B01J13/02; B01J13/025; G09F3/02; A61K2800/00; A61K2800/40; A61K2800/41; A61K2800/412; A61K2800/80; A61K2800/87; G09F2003/023; G09F2003/0241; G09F2003/028
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
139 words
A label for application to a surface, said label comprising 1) at least two sheets, a top sheet and a bottom sheet, bound by an adhesive composition layer, 2) said adhesive composition layer containing microcapsules with a liquid within the shell of the microcapsules, 3) said microcapsules having an average diameter between 4 and 80 micrometers, and 4) said bottom sheet having an adhesive on an exterior surface the cohesive strength of the adhesive composition layer being less than the strength of the bond between said adhesive composition and the faces of said sheets, the tensile rupture strength of said microcapsules being such that the cohesive failure of the adhesive results in breakage of the microcapsules, and the tensile rupture strength between said two sheets being at least 1.0g/cm and less than 90g/cm at 20°C and 50% relative humidity.
Claim 2
Dependent Claim
139 words
A label for application to a surface, said label comprising 1) at least two sheets, a top sheet and a bottom sheet, bound by an adhesive composition layer, 2) said adhesive composition layer containing microcapsules with a liquid within the shell of the microcapsules, 3) said microcapsules having an average diameter between 4 and 80 micrometers, and 4) said bottom sheet having an adhesive on an exterior surface the cohesive strength of the adhesive composition layer being less than the strength of the bond between said adhesive composition and the faces of said sheets, the tensile rupture strength of said microcapsules being such that the cohesive failure of the adhesive results in breakage of the microcapsules, and the tensile rupture strength between said two sheets being at least 1.0g/cm and less than 90g/cm at 20°C and 50% relative humidity.
Claim 3
Dependent Claim
38 words
The device of claim 1 wherein said adhesive composition does not extend across the entire surface of the opposed faces of said at least two sheets to provide a region of non-adherence between said at least two sheets.
Claim 4
Dependent Claim
43 words
The device of claim 2 wherein said surfaces are on flexible sheets of coated paper and adhesive composition comprises said microcapsules, a polymeric binder and a viscofier, and said viscofier comprises from 0.25 to 25% by dry weight of said adhesive composition layer.
Claim 5
Dependent Claim
59 words
The device of claim 2 wherein said sheets are coated paper coated on both faces with a resinous binder and pigment and the adhesive on an exterior surface is a non-pressure-sensitive adhesive, said non-pressure sensitive adhesive having a strength of adherence to paper which is at lest 10% greater than the rupture strength between said at least two sheets.
Claim 6
Dependent Claim
17 words
The device of claim 1 wherein said microcapsules have an average diameter between 8 and 30 micrometers.
Claim 7
Dependent Claim
23 words
The device of claim 1 wherein said adhesive on an exterior surface is a pressure-sensitive adhesive has a strippable cover sheet attached thereto.
Claim 8
Dependent Claim
41 words
The device of claim 3 wherein said microcapsules comprise gelatin and are between 21 and 100% by weight of said adhesive composition, said binder comprises between 0 and 78.75% by weight and said viscofier comprises between 0.25 and 12% by weight.
Claim 9
Independent Claim
26 words
The device of claims 1-7 wherein said microcapsules comprise between 50 and 85% by volume of said adhesive composition and are formed of a urea-aldehyde polymer.
Claim 10
Independent Claim
23 words
The device of claims 1-7 wherein said top sheet has perforated lines thereon to enable removal of individual portions of said top sheet.
Claim 11
Independent Claim
13 words
The device of claims 1-7 wherein said liquid is an odor releasing material.
Claim 12
Independent Claim
33 words
The device of claims 1-7 wherein the image that appears on the outer surface of the top sheet is different from the image that appears on the interior surface of the bottom sheet.
References Cited (Backward Citations)
US4186743A
Cited
US4487801A
Cited
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