BLISTER DRESSING INCLUDING A HYDROCOLLOID ADHESIVE BODY
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United States of America Patent
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Issued Date -
Jun 27, 2013
app pub date -
Apr 27, 2011
filing date -
Apr 28, 2010
priority date (Note) -
Abandoned
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Abstract
The present invention relates to a wound dressing which comprises a hydrocolloid adhesive mass comprising a hydrophobic elastomer matrix comprising poly(styrene-olefin-styrene) block copolymers, particles of hydrocolloid(s) dispersed in said elastomer matrix, and at least one tackifying hydrocarbon resin, characterized in that the hydrocolloid adhesive mass has a deformation ratio γ comprised between at least 0.10 and at most 0.40, as measured by subjecting a cylindrical sample having a diameter of 10 mm, of said hydrocolloid adhesive mass having a thickness of 1.0 mm, at a temperature of 37° C. in an atmosphere having a relative humidity of 60%, to a stress of 5000 Pa in order to cause a creep with which is associated a deformation under stress γC measured after 30 minutes of stress, followed by removing the stress in order to enable recovery characterized by a residual deformation γR after 30 minutes with no stress, the non-dimensional deformation ratio γ being given by:
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