US4587152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Residuelessly redetachable contact-adhesive sheetlike structures
Assignee: Beiersdorf AG
•
Filing: 1984-12-11
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Granted: 1986-05-06
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Expires: 2004-12-11
Abstract
Abstract Residuelessly redetachable contact-adhesive sheet-like structures wherein are provided approximately calotte-shaped bonding sites which are up to about 600 μm in diameter at the base where the calottes stick to the sheet-like structure and which are produced by screen or gravure printing using high-solids dispersion of adhesive substance.
Inventors
- 👤 Peter Gleichenhagen
- 👤 Ekkehard Behrend
- 👤 Peter Jauchen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:19
CPC Classifications
C; C09; C09J; C09J7/00; C09J7/30; C09J7/38; C09J2301/00; C09J2301/20; C09J2301/204; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24826; Y10T428/26; Y10T428/269; Y10T428/28; Y10T428/2809; Y10T428/2852; Y10T428/287; Y10T428/2878; Y10T428/2887; Y10T428/2891
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
48 words
A residuelessly redetachable contact-adhesive sheetlike structure wherein are provided approximately calotte-shaped bonding sites which are up to about 600 μm in diameter at the base where the calottes stick to the sheetlike structure and which are produced by screen or gravure printing using high-solids dispersions of adhesive substances.
Claim 2
Dependent Claim
48 words
A residuelessly redetachable contact-adhesive sheetlike structure wherein are provided approximately calotte-shaped bonding sites which are up to about 600 μm in diameter at the base where the calottes stick to the sheetlike structure and which are produced by screen or gravure printing using high-solids dispersions of adhesive substances.
Claim 3
Dependent Claim
23 words
A contact-adhesive sheetlike structure as claimed in claim 1 wherein the adhesive used has high surface tension, adhesivity, film-forming properties and elastomeric properties.
Claim 4
Dependent Claim
30 words
A contact-adhesive sheetlike structure as claimed in claims 1 and 2 wherein the adhesive used is based on (meth)acrylic acid esters with or without small proportions of other monomer units.
Claim 5
Dependent Claim
23 words
A contact-adhesive sheetlike structure as claimed in any one of claims 1-3 wherein the dispersions used are aqueous dispersions, or organosols or plastisols.
Claim 6
Dependent Claim
27 words
A contact-adhesive sheetlike structure as claimed in claim 4 wherein the aqueous dispersions used are concentrated thixotropic contact-adhesive dispersions having a solids content of 55-65% by weight.
Claim 7
Dependent Claim
27 words
A contact-adhesive sheetlike structure as claimed in any one of claims 1-5 wherein the base diameter of the calotte-shaped bonding sites is 80-500, in particular 100-400 μm.
Claim 8
Dependent Claim
19 words
A contact-adhesive sheetlike structure as claimed in any one of claims 1-6 wherein the bonding sites are subsequently crosslinked.
Claim 9
Dependent Claim
19 words
A contact-adhesive sheetlike structure as claimed in claim 7 wherein the bonding sites are subsequently cross-linked by electron beam.
Claim 10
Dependent Claim
32 words
A contact-adhesive sheetlike structure as claimed in any one of claims 1-8 which has the most suitable geometric arrangement and number (per unit area) of bonding sites for the proposed adhesive attachment.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-05-05 | 1989-11-04 | 1990-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-05 | 1993-11-04 | 1994-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-05 | 1997-11-04 | 1998-05-06 | $7700.00 | Window Closed / Lapsed |