Low trauma adhesive article
Assignee3M Innovative Properties Company
InventorsEugene G. Joseph, Richard Ferber, Donald Battles, Joseph Tucker, James K. Young
Life of this patent
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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.
Claims45
A low trauma adhesive coated substrate comprising a backing substrate formed of an absorbent material having a water absorbency of at least 100% and a fibrous adhesive layer said fibrous adhesive layer comprising an entangled web of discrete pressure-sensitive adhesive fibers, with a basis weight of 5 to 200 g/m2 of which pressure-sensitive adhesive fibers are adhesive along their entire length, of which entangled web of discrete pressure-sensitive adhesive fibers is persistently porous and has a MVTR of at least 1000 g/m2/day, said adhesive coated substrate having an initial adhesion to dry skin of at least 20 g/2.5 cm (0.08 N/cm), an initial wet skin adhesion of at least 20 g/2.5 cm (0.08 N/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.
A method of using an adhesive coated substrate comprising:
- a) providing a backing substrate of an absorbent material having a water absorbency of at least 100%, said backing being provided with a fibrous adhesive layer said fibrous adhesive layer comprising an entangled web of discrete pressure-sensitive adhesive fibers with a basis weight of 5 to 200 g/m2 of which pressure-sensitive adhesive fibers are adhesive along their entire length, of which entangled web of discrete pressure-sensitive adhesive fibers is persistently porous and has a MVTR of at least 1000 g/m2/day said adhesive coated substrate having an initial adhesion to dry skin of at least 20 g/2.5 cm (0.08 N/cm) and an initial wet skin adhesion of at least 20 g/2.5 cm (0.8 N/cm);
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- 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.
An adhesive coated substrate comprising a backing substrate and a fibrous adhesive layer said fibrous adhesive layer comprising an entangled web of discrete pressure-sensitive adhesive fibers, with a basis weight of 5 to 200 g/m2 which pressure-sensitive adhesive fibers are adhesive along their entire length which webs of pressure-sensitive adhesive fibers are persistently porous, said backing substrate comprising an absorbent material having an absorbency of at least 100%, wherein the adhesive coated substrate has an initial dry skin adhesion of at least 20 g/2.5 cm (0.08 N/cm), an initial wet skin adhesion of at least 20 g/2.5 cm (0.08 N/cm), and an initial wet skin adhesion that is at least about 65% of the initial dry skin adhesion and provides a TWEL after 10 tape pull per day for two consecutive days of less then 20 grams/m2/hour at 0.5 hours after the last pull, with an original TEWL of from about 3 to 7 grams/m2/hours.
Dependencies are inferred from the claim text.