US4735284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesive insulation system
Assignee: Dr Alois Stankiewicz GmbH
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Filing: 1986-03-21
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Granted: 1988-04-05
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Expires: 2006-03-21
Abstract
Abstract The invention relates to an adhesive insulating system that is non-destructively removable, e.g. for the purpose of repair, for sound insulation of partition walls, particularly in motor vehicles. To overcome the disadvantages associated with the previous systems in mounting and also in repair a layer of material of a highly under-cross-linked polyurethane is now applied between the substrate and the overlying layers. This polyurethane layer has, owing to its under-cross-linking, a great adhesive effect and thus enables the substrate and the insulating layers to be joined in a force-locked manner. The adhesive material layer can be prefabricated or is prepared by spraying on a highly under-cross-linked 2-component mixture of the polyurethane former.
Inventors
- 👤 Heinemann Gahlau
- 👤 Manfred Hoffmann
- 👤 Christoph Kittel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:15
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/16; G10K11/162; G10K11/168; B; B32; B32B; B32B7/00; B32B7/04; B32B7/06; B60; B60R; B60R13/00; B60R13/08; B60R13/0815; B60R13/083
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
100 words
A shaped, sound insulating material, comprising: a layer of resilient material generally defining the size and shape of the insulating material, and defining a surface adapted to be fitted against a wall or substrate; and an adhesive layer on the surface of the resilient layer, and including a highly under-cross-linked polyol uniformly distributed over, and permanently held outside of, at least a part of the surface of the resilient layer to releasably adhere the insulating material to the wall or substrate and to allow the insulating material to be removed from the wall or substrate without damaging said insulating material.
Claim 2
Dependent Claim
100 words
A shaped, sound insulating material, comprising: a layer of resilient material generally defining the size and shape of the insulating material, and defining a surface adapted to be fitted against a wall or substrate; and an adhesive layer on the surface of the resilient layer, and including a highly under-cross-linked polyol uniformly distributed over, and permanently held outside of, at least a part of the surface of the resilient layer to releasably adhere the insulating material to the wall or substrate and to allow the insulating material to be removed from the wall or substrate without damaging said insulating material.
Claim 3
Dependent Claim
19 words
Material according to claim 1, wherein the adhesive layer further includes a filler mixture of bitumen and atactic polypropylene.
Claim 4
Dependent Claim
11 words
Material according to claim 2, wherein the bitumen includes oxidation bitumen.
Claim 5
Dependent Claim
19 words
Material according to claim 3, wherein the mixture has a ratio of atactic polypropylene to bitumen of about 1:3.
Claim 6
Dependent Claim
34 words
Material according to claim 2, wherein the filler mixture has a melt viscosity at 180° C. of greater than 50,000 mPa sec., and a penetration value according to DIN 1995 between 15 and 55.
Claim 7
Dependent Claim
14 words
Material according to claim 5, wherein the penetration value is between 35 and 55.
Claim 8
Dependent Claim
15 words
Material according to claims 1 or 2, wherein the adhesive layer exhibits acoustically dampening properties.
Claim 9
Dependent Claim
25 words
Material according to claims 1 or 2, wherein the highly under-cross-linked polyol is uniformly distributed over the whole of the surface of the resilient layer.
Claim 10
Dependent Claim
33 words
Material according to claims 1 or 2, further including a stiff material covering the highly under-cross-linked polyol, and wherein said highly under-cross-linked polyol is sandwiched between the stiff covering and the resilient layer.
Claim 11
Dependent Claim
23 words
Material according to claim 9, wherein the stiff covering is selected from the group consisting of kraft paper and sprayable hardenable plastics .
Claim 12
Dependent Claim
18 words
Material according to claims 1, 2 or 5, wherein the adhesive layer is sprayed onto the resilient layer.
Claim 13
Dependent Claim
15 words
Material according to claim 1, wherein the adhesive layer is foamed onto the resilient layer.
Claim 14
Dependent Claim
28 words
Material according to claim 9, wherein the stiff covering defines a plurality of openings allowing the highy-under-cross-linked polyol to engage the wall or substrate through the stiff covering.
Claim 15
Dependent Claim
32 words
Material according to claim 1, wherein: the resilient layer has an irregular shape and defines a plurality of recesses and protuberances; and the highly under-cross-linked polyol is sprayed onto said resilient layer.
Claim 16
Dependent Claim
32 words
Material according to claim 1, wherein: the resilient layer has an irregular shape and defines a plurality of recesses and protuberances; and the highly under-cross-linked polyol is foamed onto said resilient layer.
Claim 17
Dependent Claim
25 words
Material according to claim 1, wherein: the resilient layer comprises a foam material; and the highly under-cross linked polyol is applied onto said foam material.
Claim 18
Dependent Claim
25 words
Material according to claim 1, wherein: the resilient layer comprises a fiber material; and the highly under-cross linked polyol is applied onto said fiber material.
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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) | 1991-04-05 | 1991-10-05 | 1992-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-05 | 1995-10-05 | 1996-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-05 | 1999-10-05 | 2000-04-05 | $7700.00 | Window Closed / Lapsed |