Redetachable, self-adhesive device

• US 6,136,397 A
• Filed: 09/11/1997
• Issued: 10/24/2000
• Est. Priority Date: 09/13/1996
• Status: Expired due to Term

• Current Assignee: Tesa SE (maxingvest GmbH & Co. KGaA)
• Original Assignee: Beiersdorf AG (maxingvest GmbH & Co. KGaA)
• Inventors: Junghans, Andreas, Luhmann, Bernd
• Primary Examiner(s): Ahmad, Nasser
• Application Number:
  US08/927,754
• Time in Patent Office: 1,139 Days
• Field of Search: 428/40.1, 428/40.2, 428/41.3, 428/41.8, 428/42.1, 428/192, 428/194, 428/100, 428/67, 428/421, 248/467, 248/683
• US Class Current: 428/40.1
• CPC Class Codes: A47G 1/175 Stretch releasing adhesives
• CPC Class Codes: C09J 7/20 characterised by their carriers
• CPC Class Codes: Y10T 428/14 Layer or component removable to expose adhesive
• CPC Class Codes: Y10T 428/1405 Capsule or particulate matter containing [e.g., sphere, flake, microballoon, etc.]
• CPC Class Codes: Y10T 428/1452 Polymer derived only from ethylenically unsaturated monomer
• CPC Class Codes: Y10T 428/1476 Release layer
• CPC Class Codes: Y10T 428/1486 Ornamental, decorative, pattern, or indicia
• CPC Class Codes: Y10T 428/24017 Hook or barb
• CPC Class Codes: Y10T 428/24777 Edge feature
• CPC Class Codes: Y10T 428/24793 Comprising discontinuous or differential impregnation or bond
• CPC Class Codes: Y10T 428/3154 Of fluorinated addition polymer from unsaturated monomers

Abstract

Redetachable, self-adhesive device having a plate, the sides and/or front side of which have fastening means, if appropriate, and the rear side of which has a strip of an adhesive film which is adhesive on both sides and is adhesively attached in such a way that one end of the adhesive film protrudes beyond the plate as a grip, the adhesive film being of such a kind that the adhesive bond achieved with it can be released again by pulling, stretching the strip, characterized in that the plate (1) has at its end, or on its rear side (2) at least in the region (3A, 3B) which bears against the grip (6) of the adhesive film strip (5), low stick and slip friction with respect to the adhesive film strip (5).

Claims

1. A redetachable, self-adhesive device comprising:

a) a plate having a front, a rear and four sides;

b) a double-sided adhesive strip of film adhered to the rear of said plate through an adhesive bond in such a way that one end of said adhesive film strip protrudes from said plate as a grip; and

c) optionally one or more fasteners protruding from the sides or front of said plate for fastening said plate to another device;

wherein

the adhesive bond between said adhesive film strip and said plate can be released by pulling and stretching the adhesive film strip; and

the plate has at its end which bears against the grip of said adhesive film strip or on its rear at least in a region which bears against the grip of said adhesive film strip, a plastic surface formed from a polymer selected from the group consisting of fluorine-containing polymers, organo-silicon polymers, polyolefins, polymers which contain fluorine-containing segments, organo-silicon polymer segments or polyolefin segments, and polymers based on mixtures of the aforementioned polymers.

2. Device according to claim 1, wherein that the stripping force at a pulling-off angle of 60°

is no more than three times.

3. Device according to claim 1, wherein the stripping force at a pulling-off angle of 90°

is no more than three times.

4. Device according to claim 1, wherein the region which bears against the grip allows with respect to the adhesive film strip a stripping force at a pulling-off angle of 60°

which is three times the stripping force at the pulling-off angle of 0°

.

5. Device according to claim 1, wherein the region which bears against the grip allows with respect to the adhesive film strip a stripping force at a pulling-off angle of 90°

which is three times the stripping force at the pulling-off angle of 0°

.

6. Device according to claim 1, wherein the region which bears against the grip has a surface tension of up to 37 mN/m.

7. Device according to claim 1, wherein the region which bears against the grip is formed together with the plate as an integrated injection-moulded part of plastic.

8. Device according to claim 1, wherein the adhesive film, with or without an intermediate substrate, is elastically or plastically extensible.

9. Device according to claim 1, wherein the adhesion of the adhesive strip is less than the cohesion, the adhesion is to a great extent dissipated when the film is extended, and the ratio of pulling-off force to tearing load is at least 1:

2.0, the adhesive film strip being of the kind which is based on thermoplastic rubber and tackifying resins.

10. Device according to claim 1, wherein the rear side of the adhesive film strip is covered with a release laminate.

11. Device according to claim 1, wherein there is a hook on the front side of the plate.

12. Device according to claim 1, wherein the plate has on its rear side laterally alongside the adhesively attached adhesive film strip spacers (8A, 8B), the height of which is less than the thickness of the adhesive film strip.

13. Device according to claim 12, wherein the spacers are located on both sides alongside the adhesively attached adhesive film strip.

14. Device according to claim 12, wherein the spacers are formed as fillets or segments.

15. Device according to claim 12, wherein the spacers are formed together with the plate as an injection-moulded part.

16. Device according to claim 12, wherein the height of the spacers is 30-90% of the thickness of the adhesively attached adhesive film strip.

17. Device according to claim 2, wherein the stripping force at a pulling-off angle of 60°

is no more than two times the stripping force at a peeling-off angle of 0°

.

18. Device according to claim 3, wherein the stripping force at a pulling-off angle of 90°

is no more than two times the stripping force at a peeling-off angle of 0°

.

19. Device according to claim 4, wherein the region which bears against the grip allows with respect to the adhesive film strip a stripping force at a pulling-off angle of 60°

which is two times the stripping force at the pulling-off angle 0°

.

20. Device according to claim 5, wherein the region which bears against the grip allows with respect to the adhesive film strip a stripping force at a pulling-off angle of 90°

which is two times the stripping force at the pulling-off angle 0°

.

21. Device according to claim 10, wherein the release laminate is a siliconized release paper or a release film.

22. Device according to claim 16, wherein the height of the spacers is 0.3-0.6 mm and the thickness of the adhesive film strip is 0.65 mm.

23. A method of forming a temporary bond between a substrate and device according to any one of claims 2-5, 16 and 17-20, 21 and 22, said method comprising adhering said device to said substrate by means an adhesive bond formed between said substrate and said adhesive film strip, and thereafter releasing said device from said substrate by pulling on the grip of said adhesive film strip at an angle approximately perpendicular to the plane of the bond formed between said substrate and said adhesive film strip.

24. The method according to claim 23, wherein said device is released from said substrate by pulling on the grip of said adhesive film strip at an angle of 45°

-135°

relative to said bond plane.