Low trauma adhesive article
First Claim
1. A low trauma adhesive coated substrate comprising a backing substrate and a porous fibrous adhesive layer, having a basis weight of from 5 to 200 g/m2, adhesively attached to said backing substrate, said fibrous adhesive layer comprising an entangled web of discrete pressure-sensitive adhesive fibers, which pressure-sensitive adhesive fibers are adhesive along their entire length, and which pressure-sensitive adhesive fibers form an outer adhesive surface on the fibrous adhesive layer for adhesion to skin and an inner adhesive surface on the fibrous adhesive layer for adhesion to the backing substrate, which entangled web of discrete pressure-sensitive adhesive fibers has a MVTR of at least 1000 g/m2/day, provides an initial adhesion to skin of at least 20 g/2.5 cm, and provides a TEWL after 10 tape pulls per day for two consecutive days of less than 20 grams/m2/hour at 0.5 hours after the last pull (with an original TEWL of from about 3 to 7 grams/m2/hour).
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Accused Products
Abstract
A low trauma pressure-sensitive adhesive coated substrate comprising a sheet material, tape or laminate structure designed to adhere to skin or like surfaces. The pressure-sensitive adhesive layer of this adhesive coated substrate is a fibrous adhesive layer generally having a basis weight of from 5 to 200 g/m2 applied to a conformable backing or substrate. The fibrous adhesive layer has a textured outer face and persistent porosity between discrete adhesive fibers. Generally, the fibrous adhesive layer has a MVTR (measured by ASTM E 96-80 at 40° C.) of at least 1000 g/m2/day, preferably at least 6000 g/m2/day.
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Citations
32 Claims
- 1. A low trauma adhesive coated substrate comprising a backing substrate and a porous fibrous adhesive layer, having a basis weight of from 5 to 200 g/m2, adhesively attached to said backing substrate, said fibrous adhesive layer comprising an entangled web of discrete pressure-sensitive adhesive fibers, which pressure-sensitive adhesive fibers are adhesive along their entire length, and which pressure-sensitive adhesive fibers form an outer adhesive surface on the fibrous adhesive layer for adhesion to skin and an inner adhesive surface on the fibrous adhesive layer for adhesion to the backing substrate, which entangled web of discrete pressure-sensitive adhesive fibers has a MVTR of at least 1000 g/m2/day, provides an initial adhesion to skin of at least 20 g/2.5 cm, and provides a TEWL after 10 tape pulls per day for two consecutive days of less than 20 grams/m2/hour at 0.5 hours after the last pull (with an original TEWL of from about 3 to 7 grams/m2/hour).
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28. A method of using an adhesive coated substrate comprising:
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a) providing a backing substrate adhesively attached to a porous fibrous adhesive layer, having a basis weight of from 5 to 200 g/m2, the fibrous adhesive layer comprising an entangled web of discrete melt extrudable pressure-sensitive adhesive fibers, which pressure-sensitive adhesive fibers are adhesive along their entire length, and which pressure-sensitive adhesive fibers form an outer adhesive surface on the fibrous adhesive layer for adhesion to skin and an inner adhesive surface on the fibrous adhesive layer for adhesion to the backing substrate, which entangled web of discrete pressure-sensitive adhesive fibers has a MVTR of at least 1000 g/m2/day, and b) adhering the adhesive coated substrate to skin and subsequently removing the substrate such that the adhesive coated substrate provides a TEWL after 10 tape pulls per day for two consecutive days of less than 20 g/m2/hour at 0.5 hours after the last pull (with an original TEWL of about 3 to 7 g/m2/hour). - View Dependent Claims (29, 30, 31, 32)
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Specification