Self-adhesive laminate for nails

• US 5,525,389 A
• Filed: 08/31/1994
• Issued: 06/11/1996
• Est. Priority Date: 07/30/1990
• Status: Expired due to Fees

• Current Assignee: LTS Lohmann Therapie-Systeme AG
• Original Assignee: LTS Lohmann Therapie-Systeme AG
• Inventors: Simon, Gunter, von Kleinsorgen, Reinhard, Steinborn, Dorothea, Hoffmann, Hans-Rainer
• Primary Examiner(s): Davis, Jenna L.
• Application Number:
  US08/299,337
• Time in Patent Office: 650 Days
• Field of Search: 428/40, 428/42, 132/73, 132/285
• US Class Current: 428/41.5
• CPC Class Codes: A45D 29/001 Self adhesive nail coating blanks
• CPC Class Codes: A61K 8/0208 Tissues; Wipes; Patches
• CPC Class Codes: A61K 8/8152 Homopolymers or copolymers of esters, e.g. (meth)acrylic acid esters; Compositions of derivatives of such polymers
• CPC Class Codes: A61Q 3/00 Manicure or pedicure preparations
• CPC Class Codes: A61Q 3/02 Nail coatings
• CPC Class Codes: B32B 27/08 of synthetic resin
• CPC Class Codes: Y10T 428/1462 Polymer derived from material having at least one acrylic or alkacrylic group or the nitrile or amide derivative thereof [e.g., acrylamide, acrylate ester, etc.]

Abstract

The invention relates to a self-adhesive, plasticizer-containing laminate consisting of

a) a film-forming polymeric layer containing dyestuffs and/or pigments,

b) a pressure-sensitive adhesive layer, and

c) a removable, preferably siliconized protective film covering the pressure-sensitive adhesive layer,

the film-forming polymeric layer a) of which is at least entirely covered by a layer being resistant towards the other components of the laminate and towards the materials used in the production of the laminate. The invention further relates to the use of said laminate as artificial nails applicable to toenails or fingernails.

Claims

1. A self-adhesive laminate containing at least one plasticizer and being formable to toenails or fingernails, comprising:

a) a film-forming polymeric layer containing said at least one plasticizer, dyestuff, pigment or mixture thereof;

b) a pressure-sensitive adhesive layer located thereon; and

c) a removable protective film covering the pressure-sensitive adhesive layer, wherein the film-forming polymeric layer is, on its reverse side, covered by a detachable covering film being resistant toward the other components of the laminate and toward the materials used in the production of the laminate, wherein the covering film is provided with an adhesive coating, wherein the adhesion of the covering film to the polymeric layer is less than the adhesion between the adhesive layer and the protective film, and wherein the polymeric layer contains a substance selected from the group consisting of nitrocellulose, acrylates, and mixtures thereof, wherein the acrylates are polymers selected from the group derived from acrylic acid, dimethylaminoethyl methacrylate, methyl acrylic acid and mixtures thereof.

2. The self-adhesive laminate according to claim 1, wherein the covering film consists of a plastic material.

3. The self-adhesive laminate according to claim 1, wherein the covering film is provided with a peel-off aid.

4. The self-adhesive laminate according to claim 1, containing citric acid as plasticizer.

5. The self-adhesive laminate according to claim 4, containing camphor as plasticizing agent.

6. The self-adhesive laminate according to claim 1, wherein the concentration of said at least one plasticizer within the polymeric layer ranges from 1 to 30%-wt., relative to the polymers of the layer or layers.

7. The self-adhesive laminate according to claim 1, wherein the polymeric layer or the adhesive layer or both contain an odor-active component.

8. The self-adhesive laminate according to claim 1, wherein the adhesive layer or the polymeric layer or both comprises an antimycotically effective substance.

9. The self-adhesive laminate according to claim 8, wherein the adhesive layer or polymeric layer or both comprises as an antimycotic at least one active substance selected from the group consisting of clotrimazone, miconazole, ketoconazole, econazole, naftifin, ciclopiroxolamine, fenticlor, sulbetine, tolnaftate, and haloprogin.

10. The self-adhesive laminate according to claim 1, wherein the adhesive layer comprises a component promoting the penetration of the active substance into the nail.

11. The self-adhesive laminate according to claim 1, wherein the area weight of the adhesive amounts to 20 to 100 g/m².

12. The self-adhesive laminate according to claim 1, wherein the polymeric layer has a thickness of 25 to 200 μ

m.

13. The self-adhesive laminate according to claim 1, wherein the polymeric layers are of different compositions.

14. The self-adhesive laminate according to claim 1, wherein the protective film is a siliconized protective film.

15. The self-adhesive laminate according to claim 6, wherein the concentration of said at least one at least one plasticizer within the polymer layer ranges from 5% to 12.5%-wt.

16. The self-adhesive laminate according to claim 15, wherein the concentration of said at least one at least one plasticizer within the polymer layer ranges from 7% to 10%-wt.

17. The self-adhesive laminate according to claim 10, wherein the component promoting the penetration of the active substance into the nail is selected from the group consisting of DMSO and DMF.

18. The self-adhesive laminate according to claim 11, wherein the area weight of the adhesive ranges from 25 to 75 g/m².

19. The self-adhesive laminate according to claim 12, wherein the polymeric layer has a thickness of 60 to 150 μ

m.