EP0188883A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Pad fragrance sampling device
Assignee: 3M Co
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Filing: 1985-12-11
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Granted: —
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Expires: 2005-12-11
Abstract
Abstract @ Microencapsulated materials are released by removing individual elements from a pad of sheets bonded by adhesive layers containing capsules.
Inventors
- 👤 Jack W. C/O Minnesota Mining And Charbonneau
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 22:50
CPC Classifications
A; A61; A61Q; A61Q13/00; B; B32; B32B; B32B5/00; B32B5/16; A45; A45D; A45D40/00; A45D40/0087; A61K; A61K8/00; A61K8/02; A61K8/0208; A61K8/11; A61L; A61L9/00; A61L9/015; A61L9/04; A61L9/12; A61M; A61M35/00; A61M35/003; A61M35/006; A45D2200/00; A45D2200/10; A45D2200/1009; A45D2200/1018; A45D2200/1036; A61K2800/00; A61K2800/40; A61K2800/41; A61K2800/412; Y; Y10; Y10S; Y10S428/00; Y10S428/905; Y10T; Y10T428/00; Y10T428/15; Y10T428/249921; Y10T428/249994; Y10T428/249995; Y10T428/249997; Y10T428/25; Y10T428/254; Y10T428/29; Y10T428/2982; Y10T428/2984; Y10T428/2985; Y10T428/2987; Y10T428/2989
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
145 words
A stacked, coherent array of elements for providing access to an encapsulated liquid or spreadable material, said array comprising 1) at least three sheets, each pair of adjacent sheets in adjacent elements bound by an adhesive composition layer, 2) said adhesive composition layer containing microcapsules with an encapsulated material comprising a liquid or spreadable material within the shell of the microcapsules, and 3) said microcapsules having an average diameter between 4 and 100 micrometers, 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
145 words
A stacked, coherent array of elements for providing access to an encapsulated liquid or spreadable material, said array comprising 1) at least three sheets, each pair of adjacent sheets in adjacent elements bound by an adhesive composition layer, 2) said adhesive composition layer containing microcapsules with an encapsulated material comprising a liquid or spreadable material within the shell of the microcapsules, and 3) said microcapsules having an average diameter between 4 and 100 micrometers, 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
27 words
A device according to claim 1 wherein said adhesive composition comprises said microcapsules and a polymeric binder, and there are at least twenty adjacent pairs of sheets.
Claim 4
Independent Claim
27 words
A device according to either of claims 1 and 2 wherein said surfaces are on flexible sheets of paper and said polymeric binder is a pressure-sensitive adhesive.
Claim 5
Independent Claim
24 words
A device according to either of claims 1 and 2 wherein said sheets are flexible paper and said binder is a non-pressure-sensitive polymeric binder.
Claim 6
Independent Claim
23 words
A device according to any one of claims 1 to 4 wherein said microcapsules have an average diameter between 8 and 30 micrometers.
Claim 7
Independent Claim
58 words
A device according to any one of claims 1 to 5 wherein said individual elements comprise two sheets, a top sheet and a bottom sheet, having said adhesive composition layer between said two sheets and also having a pressure-sensitive adhesive layer on the surface of said bottom sheet which is not in contact with said adhesive composition layer.
Claim 8
Independent Claim
49 words
A device according to any one of claims 1 to 3 and 5 and 6 as dependent on 1 to 3 wherein said microcapsules comprise gelatin and are between 21 and 100% by weight of said adhesive composition and said binder comprises between 0 and 78.75% by weight .
Claim 9
Independent Claim
30 words
A device according to any one of claims 1 to 7 wherein said microcapsules comprise between 50 and 85% by volume of adhesive composition and comprise a polymeric shell material.
Claim 10
Independent Claim
43 words
A device according to any one of claims 1, 2, 4 and 5 and 6 as dependent on 1, 2 and 4 wherein said microcapsules comprise between 50 and 85% by volume of said adhesive composition and are formed of a urea-aldehyde polymer.
Claim 11
Independent Claim
29 words
A device according to any one of claims 1 to 9 wherein said top sheet has perforated lines thereon to enable removal of individual portions of said top sheet.
Claim 12
Independent Claim
22 words
A device according to any one of claims 1 to 10 wherein said encapsulated material is a liquid which comprises a perfume.
Claim 13
Independent Claim
40 words
A device according to any one of claims 1, 2, 4 and 5 to 11 as dependent on 4 wherein said encapsulated material is a liquid which comprises a perfume and the shell of said microcapsule comprises a urea-formaldehyde resin.
Claim 14
Independent Claim
24 words
A device according to any one of claims 1 to 10 wherein the encapsulated material is a liquid which contains a medically active ingredient.
Claim 15
Independent Claim
31 words
A device according to any one of claims 1 to 10 wherein said encapsulated material is a spreadable material selected from the group consisting of lipstick, rouge and medically active ingredients.
References Cited (Backward Citations)
No citation records indexed.
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