Elastomeric articles having skin care properties and methods for their production
The present application provides elastomeric articles that are able to deliver skin care properties to a person wearing or coming into contact with the article. The articles comprise an elastomeric film a plant stem cell material. The plant stem cell material may be in the form of a bilayer membrane-encapsulated plant stem cell material. The plant stem cell material may be present as a layer or coating on a surface of the elastomeric film. Also provided are methods for the production of the articles.
1. An elastomeric glove comprising: (a) an elastomeric film and (b) a dry coating layer on a surface thereof, wherein the dry coating layer contains an effective amount of a plant stem cell material and wherein the plant stem cell material is stabilized by and encapsulated within a single-layer or bilayer membrane.
2. The elastomeric glove of claim 1 , wherein the plant stem cell material is a dedifferentiated plant stem cell material.
3. The elastomeric glove of claim 1 , wherein the plant stem cell material is in the form of plant stem cell lysate.
4. The elastomeric glove of claim 1 , wherein the plant is selected from: plants of the Rosaceae family, apple varieties, grape varieties, Symphytum, alpine rose, argan trees, dwarf soapwort, tea plants under Family Theaceae, Aloe Vera under Family Asphodelaceae, Citrus under Family Rutaceae, Cucumis under Family Cucurbitaceae, Hibiscus under Family Malvaceae, Lavandula under Family Lamiaceae, Calendula under Family Asteraceae, Witch Hazel, Neem trees, Avocado trees and Algae.
5. The elastomeric glove of claim 1 , wherein the plant stem cell material is encapsulated by a bilayer membrane system, such that the plant stem cell material is in the form of the bilayer membrane-encapsulated plant stem cell material.
6. The elastomeric glove of claim 5 , wherein the bilayer membrane system is selected from the group consisting of liposomes, cerasomes, ethosomes, niosomes, transfersomes, cetosomes, aquasomes, colloidosomes, sphingosomes and cubosomes.
7. The elastomeric glove of claim 5 , wherein the bilayer membrane system is liposomes.
8. The elastomeric glove of claim 7 , wherein the liposomes have an average diameter in the range of 1-1000 nm.
9. The elastomeric glove of claim 5 , wherein the amount of bilayer membrane-encapsulated plant stem cell material is between 0.0001 and 20% by weight of the glove.
10. The elastomeric glove of claim 1 , wherein the plant stem cell material is in combination with a phospholipid in the dry coating layer on the surface of the glove.
11. The elastomeric glove of claim 1 , comprising two or more plant stem cell materials.
12. The elastomeric glove of claim 1 , wherein the amount of plant stem cell material on the surface of the glove is between 0.0001 and 20% by weight of the glove.
13. The elastomeric glove of claim 1 , wherein the elastomeric film has an average thickness of between 0.01 and 3.0 mm.
14. The elastomeric glove of claim 1 , wherein the elastomer of the elastomeric film is selected from the group consisting of rubber, nitrile rubber, polyurethane, polyisoprene, polychloroprene, acrylic polymers, polybutadienes, copolymers or blends of these polymers, their monomers or other polymers/monomers, and modified forms of these polymers or copolymers.
15. The elastomeric glove of claim 1 , wherein the dry coating layer is produced from a coating composition with a pH of 5.0 to 8.0.
16. The elastomeric glove of claim 1 , wherein the glove has an average thickness of between 0.01 and 3.0 mm, a modulus at 500% of less than 15 MPa, and an elongation at break of at least 500%.
17. A method for the manufacture of the elastomeric glove according to claim 1 , the method comprising applying a coating composition containing an effective amount of a plant stem cell material that is stabilized by and encapsulated within a single-layer or bilayer membrane onto a surface of an elastomeric film glove, and drying the coating composition to produce a dry coating layer on the elastomeric film glove.
18. The method of claim 17 , wherein the coating composition is applied through a dipping process, spraying method or a tumbling method.
19. The method of claim 18 , wherein the coating composition is applied through dipping, and is performed while the elastomeric film glove is on a former, prior to stripping.
20. The method of claim 19 , wherein the dipping process to apply the coating composition containing the plant stem cell material onto the surface of the elastomeric film glove is performed after drying and/or curing of the elastomeric film glove, but prior to stripping of the dried and/or cured elastomeric film glove from the former.
21. The method of claim 17 , wherein the coating composition containing the plant stem cell material is applied at a temperature of below 40° C.
22. The method of claim 17 , wherein the coating composition has a pH of between 5.0 and 8.0.
23. The method of claim 17 , wherein the coating composition has a water content of at least 50% by weight at the time of application of the coating composition onto the surface of the elastomeric film glove.
24. The method of claim 23 , wherein the coating composition has a water content of at least 90% by weight of the coating composition.
25. The method of claim 23 , wherein the coating composition is dried at a temperature below 60° C. to yield the dry coating layer.
26. The method of claim 17 , wherein the plant stem cell material is a dedifferentiated plant stem cell material.
27. The method of claim 17 , wherein the plant is selected from: plants of the Rosaceae family, apple varieties, grape varieties, Symphytum, alpine rose, argan trees, dwarf soapwort, tea plants under Family Theaceae, Aloe Vera under Family Asphodelaceae, Citrus under Family Rutaceae, Cucumis under Family Cucurbitaceae, Hibiscus under Family Malvaceae, Lavandula under Family Lamiaceae, Calendula under Family Asteraceae, Witch Hazel, Neem trees, Avocado trees and Algae.
28. The method of claim 17 , wherein the plant stem cell material is in the form of plant stem cell lysate.
29. The method of claim 17 , wherein the bilayer membrane is selected from the group consisting of liposomes, cerasomes, ethosomes, niosomes, transfersomes, cetosomes, aquasomes, colloidosomes, sphingosomes and cubosomes.
30. The method of claim 17 , wherein the bilayer membrane is liposomes, and the encapsulation comprises forming liposomes from the plant stem cell material and a phospholipid.
31. The method of claim 30 , wherein the liposomes are formed with an average diameter in the range of 1-1000 nm.
32. The method of claim 17 , wherein the coating composition comprises phospholipid.
33. The method of claim 17 , wherein the coating composition comprises two or more plant stem cell materials.
34. The method of claim 17 , wherein the coating composition is applied in an amount to provide a dry coating layer that constitutes between 0.0001%-20%, by weight of the total weight of the elastomeric glove.
35. The method of claim 17 , comprising forming the elastomeric film glove so as to have an average thickness of between 0.01 and 3.0 mm.
36. The method of claim 17 , comprising forming the elastomeric film glove from an elastomeric film composition selected from the group consisting of rubber, nitrile rubber, polyurethane, polyisoprene, polychloroprene, acrylic polymers, polybutadienes, copolymers or blends of these polymers, their monomers or other polymers/monomers, and modified forms of these polymers or copolymers.