LOW TRAUMA WOUND DRESSINGS AND ADHESIVES FOR SAME
The present disclosure provides a wound dressing in the form of a bandage having a seal strength that is sufficient to allow it to be used in medical applications, and a low trauma, peel-off releasability for the convenience and comfort of the patient. An adhesive for use with such a bandage is also provided. The adhesive comprises a polyurethane adhesive including a mixture of: (a) a polyol mixture, (b) an isocyanate, and (c) a catalyst mix. The adhesive may have a thickness in the range of about 50 to about 525 pm and may have an adhesion value of less than about 150 g/cm against a metal plate.
1 . A wound dressing, comprising:
a film base having a lower surface for contact with skin and an opposed, upper surface;
an absorbent pad component attached to the lower surface of the film base; and
an adhesive layer extending across a surface area of the lower surface of the film base;
wherein the adhesive layer comprises a polyurethane adhesive having a thickness in the range of about 50 to about 525 μm and an adhesion value of less than about 150 g/cm against a metal plate.
2 . The wound dressing of claim 1 , wherein the polyurethane adhesive comprises a mixture of: (a) a polyol mixture, (b) an isocyanate, and (c) a catalyst mix.
3 . The wound dressing of claim 1 , wherein the adhesive layer has a thickness in the range of about 50 to about 80 μm.
4 . The wound dressing of claim 1 , wherein the adhesive is a pressure-sensitive adhesive.
5 . The wound dressing of claim 1 , wherein the adhesion value is less than about 100 g/cm.
6 . The wound dressing of claim 1 , wherein the adhesive layer comprises a coating.
7 . The wound dressing of claim 1 , wherein the adhesive layer includes a flexible substrate film for carrying the adhesive.
8 . The wound dressing of claim 7 , wherein the substrate film is selected from the group consisting of polyethylene, polyethylene terephthalate, polypropylene, polyurethane, ethylene vinyl acetate (EVA), polyester, copolyesters, and other polymer blends.
9 . The wound dressing of claim 7 , wherein the substrate film is a fabric, woven, non-woven, or sheet material.
10 . A wound dressing, comprising:
a film base having a lower surface for contact with skin and an opposed, upper surface; and
an adhesive layer extending across at least a portion of the lower surface of the film base, wherein the adhesive layer comprises a polyurethane adhesive including a mixture of: (a) a polyol mixture, (b) an isocyanate, and (c) a catalyst mix.
11 . The wound dressing of claim 10 , wherein the adhesive layer includes a flexible substrate film for carrying the adhesive.
12 . The wound dressing of claim 11 , wherein the substrate film is selected from the group consisting of polyethylene, polyethylene terephthalate, polypropylene, polyurethane, ethylene vinyl acetate (EVA), polyester, copolyesters, and other polymer blends.
13 . The wound dressing of claim 10 , further comprising an absorbent pad component attached to the lower surface of the film base.
14 . The wound dressing of claim 10 , wherein the adhesive layer comprises a coating.
15 . The wound dressing of claim 10 , wherein the polyurethane adhesive has a thickness in the range of about 50 to about 525 μm.
16 . The wound dressing of claim 10 , wherein the polyurethane adhesive has a thickness in the range of about 50 to about 80 μm.
17 . An adhesive, comprising:
a polyurethane adhesive comprising a mixture of: (a) a polyol mixture, (b) an isocyanate, and (c) a catalyst mix and having a thickness in the range of about 50 to about 525 μm.
18 . The adhesive of claim 17 , wherein the adhesive has an adhesion value of less than about 150 g/cm against a metal plate.
19 . The adhesive of claim 18 , wherein the adhesion value is less than about 100 g/cm against a metal plate.
20 . The adhesive of claim 17 , wherein the adhesive has a thickness in the range of about 50 to about 80 μm.
21 . The adhesive of claim 17 , further being a pressure-sensitive adhesive.
22 . The adhesive of claim 17 , further being a coating for use on a medical device.
23 . The adhesive of claim 21 , wherein the medical device is a wound dressing.
24 . The adhesive of claim 23 , wherein the wound dressing is a bandage.
25 . The adhesive of claim 17 , further being carried on a substrate film.
26 . The adhesive of claim 25 , wherein the substrate film is selected from the group consisting of polyethylene, polyethylene terephthalate, polypropylene, polyurethane, ethylene vinyl acetate (EVA), polyester, copolyesters, and other polymer blends.
27 . The adhesive of claim 25 , wherein the substrate film is a fabric, woven, non-woven, or sheet material.
28 . The adhesive of claim 25 , wherein the substrate film is flexible.