초록 ▼

Friction control articles for use in healthcare applications, the articles generally comprising a backing Layer having a first surface and a second surface, where projecting from the first surface of the backing layer is an array of stems, wherein at least a portion of the exterior surface of the st

Friction control articles for use in healthcare applications, the articles generally comprising a backing Layer having a first surface and a second surface, where projecting from the first surface of the backing layer is an array of stems, wherein at least a portion of the exterior surface of the stems comprises an elastomeric material. Also disclosed are friction control articles having a coefficient of friction when dry along at least a portion of the first surface of at least 0.6. Multilayered and dual-sided friction control articles are also provided.

대표청구항 ▼

We claim: 1. A medical drape comprising: a backing layer having a first surface and a second surface, where projecting from the first surfane of the backing layer is a soft and flexible array of stems which are integrally formed with the backing layer; wherein at least a portion of the exterior sur

We claim: 1. A medical drape comprising: a backing layer having a first surface and a second surface, where projecting from the first surfane of the backing layer is a soft and flexible array of stems which are integrally formed with the backing layer; wherein at least a portion of the exterior surface of the stems comprises an elastomeric material selected from the group consisting of anionic triblock copolymers; thermoplastic elastomers based on halogen-containing polyolefins; thermoplastic elastomers based on dynamically vulcanized elastomer-thermoplastic blends; thermoplastic polyether ester and polyester based elastomers; thermoplastic elastomers based on polyanaides or polyimides; jonomeric thermoplastic elastomers; hydrogenated block copolymers in thermoplastic elastomer interpenetrating polymer networks; thermoplastic elastorners made by carbocationic polymerization; polymer blends containing styrene/hydrogenated butadiene block copolymers; polyacrylate-based thermoplastic elastomers; natural rubbers; butyl rubbers; EPDM rubbers; silicone rubbers; polyisoprenes; polybutadienes; polyurethanes; ethylene/propylene/diene terpolymer elastomers; chloroprene rubbers; random and block styrene-butadiene copolymers; random and block styrene-isoprene copolymers; acrylonitrile-butadiene copolymers; and mixtures and copolymers thereof; wherein the aspect ratio of the stems on the first surface of the backing layer is at least about 1.25; and wherein the drape has a static coefficient of friction when dry along at least a portion of the first surface of at least 0.6. 2. The medical drape of claim 1 wherein the stems are generally upstanding. 3. The medical drape of claim 1 wherein the elastomeric material is thermoplastic. 4. The medical drape of claim 1 wherein the static coefficient of friction when wet is within 20 percent of the static coefficient of friction when dry. 5. The medical drape of claim 1 wherein the static coefficient of friction when wet is Within 80 percent of the static coefficient affliction when dry. 6. The medical drape of claim 1 wherein the static coefficient of friction when wet is Within 90 percent of the static coefficient of friction when dry. 7. The medical drape of claim 1 wherein protruding from the second surface of the backing layer is a second array of stems. 8. The medical drape of claim 1 farther comprising a second backing layer adjacent to the second surface of the first backing layer, where projecting from the second backing layer is a second array of stems. 9. The medical drape of claim 8 wherein at least a portion of the exterior surface of the stems of the second array comprises an elastomeric material. 10. The medical drape of claim 8 farther comprising a reinforcing layer disposed between the first and second backing layers. 11. The medical drape of claim 10 wherein the reinforcing layer is a nonwoven scrim material. 12. The medical drape of claim 10 wherein the reinforcing layer is a woven scrim material. 13. The medical drape of claim 1 further comprising a reinforcing layer adjacent to the second surface of the backing layer. 14. The medical drape of claim 13 wherein the reinforcing layer is a nonwoven scrim material. 15. The medical drape of claim 13 wherein the reinforcing layer is a woven scrim material. 16. The medical drape of claim 13 further comprising a second backing layer adjacent to the reinforcing layer, where projecting from the second backing layer is a second array of stems. 17. The medical drape of claim 16 wherein at least a portion of the exterior surface of the stems of the second array comprises an elastomeric material. 18. The medical drape of claim 1 further comprising micro-channels between the stems along at least a portion of the exterior of the first surface of the backing layer. 19. The medical drape of claim 1 wherein the density of the stems on the first surface of the backing layer is at least 15.5 stems/cm2. 20. The medical drape of claim 1 wherein the elastomeric material further comprises at least one antioxidant. 21. A medical drape comprising: a backing layer having a first surface and a second surface, where projecting from the first surface of the backing layer is a soft and flexible array of stems which are integrally formed with the backing layer; wherein the aspect ratio of the stems on the first surface of the backing layer is at least about 1.25; and wherein the drape has a static coefficient of friction when dry along at least a portion of the first surface of at least 0.6. 22. A medical drape comprising: a backing layer having a first surface and a second surface, where projecting from the first surface of the backing layer is a soft and flexible array of 15.5 to 1500 upstanding stems per centimeter squared which are integrally formed with the backing layer; wherein at least a portion of the exterior surface of the stems comprises an elastomeric material with a Shore hardness of less than about 90 A; wherein the aspect ratio of the stems on the first surface of the backing layer is at least about 1.25; wherein each stem has a maximum cross sectional dimension of 0.076 to 0.76 mm; and wherein the drape has a static coefficient of friction when dry along at least a portion of the first surface of at least 0.6. 23. The medical drape of claim 22, wherein the elastomeric material has a Shore hardness of less than about 50 A. 24. The medical drape of claim 22, wherein the drape has a dynamic shear strength of at least 112,034 dynes per centimeter squared.