Stretch removable adhesive articles and methods
First Claim
Patent Images
1. A method of removing a medical article from skin, the method comprising:
- providing a medical article adhered to skin, wherein the medical article comprises a backing and a stretch removable pressure sensitive adhesive layer disposed thereon; and
stretching the medical article in an amount sufficient to delaminate the adhesive layer from the backing and remove the medical article from the skin.
2 Assignments
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Accused Products
Abstract
Pressure sensitive adhesive articles and methods, particularly stretch removable adhesive articles that are preferably for use in adhering to skin or like delicate surfaces. Preferably, stretch removability of the article occurs as a result of the selection of a stretch removable pressure sensitive adhesive. In one embodiment of the articles and methods, the adhesive and backing delaminate upon removal. In another embodiment of the articles and methods, the backing includes a predefined tab located in a central location of the backing.
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Citations
78 Claims
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1. A method of removing a medical article from skin, the method comprising:
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providing a medical article adhered to skin, wherein the medical article comprises a backing and a stretch removable pressure sensitive adhesive layer disposed thereon; and
stretching the medical article in an amount sufficient to delaminate the adhesive layer from the backing and remove the medical article from the skin. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of removing a medical article from skin, the method comprising:
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providing a medical article adhered to skin, wherein the medical article comprises a backing and a stretch removable pressure sensitive adhesive layer disposed thereon;
wherein the backing and the adhesive layer are selected such that the stretchability of the adhesive layer is greater than that of the backing under the same tension;
wherein the stretch removable pressure sensitive adhesive layer comprises;
a pressure sensitive adhesive matrix; and
a fibrous reinforcing material within the pressure sensitive adhesive matrix;
and further wherein the adhesive layer has a yield strength and a tensile strength, and wherein the tensile strength is about 0.7 MPa or greater, and at least about 150% of the yield strength; and
stretching the medical article in an amount sufficient to delaminate the adhesive layer from the backing and remove the medical article from the skin.
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16. A method of removing a medical article from skin, the method comprising:
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providing a medical article adhered to skin, wherein the medical article comprises a backing and a stretch removable pressure sensitive adhesive layer disposed thereon;
wherein the backing and the adhesive layer are selected such that the stretchability of the adhesive layer is greater than that of the backing under the same tension;
wherein the stretch removable pressure sensitive adhesive layer comprises;
a pressure sensitive adhesive matrix comprising a polymer derived from at least one alkyl ester monomer selected from isooctyl acrylate, 2-ethyl-hexyl acrylate, and n-butyl acrylate; and
at least one co-monomer selected from acrylic acid and acrylamide; and
a fibrous reinforcing material within the pressure sensitive adhesive matrix; and further wherein the adhesive layer has a yield strength and a tensile strength, and wherein the tensile strength is about 0.7 MPa or greater, and at least about 150% of the yield strength; and
stretching the medical article in a direction relative to the skin to which it is adhered sufficient to delaminate the adhesive layer from the backing and remove the medical article from the skin.
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- 17. A medical article comprising a backing and a stretch removable pressure sensitive adhesive layer disposed thereon, wherein the backing and the adhesive layer are selected such that the stretchability of the adhesive layer is greater than that of the backing under the same tension and the adhesive layer and backing delaminate when removed from skin.
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29. A method of making a medical article, the method comprising:
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providing a backing;
selecting a stretch removable pressure sensitive adhesive layer such that the stretchability of the adhesive layer disposed on the backing is greater than that of the backing under the same tension; and
laminating the backing and the pressure sensitive adhesive layer together under conditions of temperature and pressure that allow the adhesive layer and backing to delaminate when removed from skin.
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- 30. A stretch removable adhesive article comprising a backing with a predefined tab and a pressure sensitive adhesive layer disposed on a major surface of the backing opposite that of the tab, wherein the predefined tab is located in a central portion of the backing.
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49. A stretch removable adhesive article comprising a backing with a predefined tab and a stretch removable pressure sensitive adhesive layer disposed thereon, wherein the predefined tab is located in a central portion of the backing, and further wherein the backing and the adhesive layer are selected such that the stretchability of the adhesive layer is greater than that of the backing under the same tension.
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50. A stretch removable adhesive article comprising a backing with a predefined tab and a stretch removable pressure sensitive adhesive layer disposed thereon, wherein:
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the predefined tab is located in a central portion of the backing;
the backing and the adhesive layer are selected such that the stretchability of the adhesive layer is greater than that of the backing under the same tension; and
the adhesive layer comprises;
a pressure sensitive adhesive matrix; and
a fibrous reinforcing material within the pressure sensitive adhesive matrix;
wherein the adhesive layer has a yield strength and a tensile strength, and wherein the tensile strength is about 0.7 MPa or greater, and at least about 150% of the yield strength.
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51. A method of removing an article from a surface, the method comprising:
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providing a stretch removable adhesive article adhered to a surface, wherein the article comprises a backing with a predefined tab and a pressure sensitive adhesive layer disposed thereon, wherein the predefined tab is located in a central portion of the backing; and
pulling on the tab to stretch the adhesive article in an amount sufficient to remove the article from the surface. - View Dependent Claims (52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67)
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68. A method of making a medical article, the method comprising:
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providing a backing with a predefined tab located in a central portion of the backing; and
applying a stretch removable pressure sensitive adhesive to a major surface of the backing opposite that of the predefined tab.
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69. A method of removing an article from a surface, the method comprising:
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providing a stretch removable adhesive article adhered to a surface, wherein the article comprises a backing with a predefined tab and a pressure sensitive adhesive layer disposed thereon, wherein the predefined tab is located in a central portion of the backing; and
pulling on the tab along a direction that is normal to the surface to stretch the adhesive article in an amount sufficient to remove the article from the surface.
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70. A method of removing an article from a surface, the method comprising:
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providing a stretch removable adhesive article adhered to a surface, wherein the article comprises a backing and a pressure sensitive adhesive layer disposed thereon;
rotating a portion of the article to a nearly perpendicular orientation from its starting position; and
pulling on the rotated portion of the article along a direction that is not normal to the surface to stretch the adhesive article in an amount sufficient to remove the article from the surface. - View Dependent Claims (71, 72, 73, 74, 75)
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76. A method of removing an article from a surface, the method comprising;
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providing a stretch removable adhesive article adhered to a surface, wherein the article has a center axis and comprises a backing having a plane and a pressure sensitive adhesive layer disposed on the backing;
grasping an edge portion at the center of the article so that the plane of the backing stays substantially parallel to the plane of the surface; and
pulling on the edge portion of the article along a direction that is substantially perpendicular to the center axis of the article and along the plane of the surface to stretch the article in an amount sufficient to remove the article from the surface. - View Dependent Claims (77, 78)
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Specification