Flexible elastomeric article with enhanced lubricity
AssigneeLRC Products Limited
InventorPhilip W. Brindle
Life of this patent
Estimating the term…
Abstract
This invention relates to elastomeric flexible articles (e.g., film articles) that exhibit enhanced lubricity ("slip") with respect to both dry and damp surfaces, particularly skin or other tissue of the wearer, as compared to similar articles or films that are not treated as described herein. This invention also relates to processes for making such articles or films.
Claims29
A flexible article displaying slip properties with respect to damp and dry mammalian tissue without use of powder lubricants comprising:
- a substrate layer comprising an elastomeric material, said layer having a wearer-contacting surface, said surface having a dry slip conferring coating compatible with said elastomeric material bonded thereto said coating having a thickness not exceeding about 5% of the thickness of said substrate and said coating comprising (i) a binder and (ii) porous, absorbent microparticles, said microparticles having an average diameter within the range from about 4 to about 20 microns and an oil absorption higher than about 180 g of oil per 100 g of said microparticles, said microparticles being enveloped by said binder but partially protruding therefrom thus imparting to said surface a microroughened appearance;
- and
- a damp slip-conferring amount of a surfactant applied to said wearer-contacting surface.
A flexible article displaying slip properties with respect to damp and dry mammalian tissue without the use of powder lubricants, said tissue including skin, said article comprising:
- a substrate layer comprising a polyurethane elastomer, said layer having a tissue-contacting surface, said surface having a coating bonded thereto, said coating (i) having a thickness not exceeding about 5% of the thickness of said substrate and (ii) comprising an elastomeric binder compatible with said elastomer, said binder having a glass transition temperature within the range of -5.degree. to +15.degree. C., said binder enveloping porous silica microspheres having a mean diameter within the range of about 5 to about 12 microns, an oil absorption at least 180 g of oil per 100 g of said particles a pore volume greater than 1.0 ml/g, said microspheres partially protruding from said binder and imparting to said tissue-contacting surface a microroughened appearance and thereby conferring dry-slip properties to said surface;
- and a damp slip-conferring amount of a surfactant applied to said coated wearer-contacting surface, said damp and dry slip properties making the surface lubricious with respect to damp and dry tissue without the use of other lubricants.
A flexible article displaying slip properties with respect to damp and dry mammalian tissue without use of powder lubricants comprising:
- a substrate layer comprising an elastomeric material, said layer having a wearer-contacting surface, said surface having a dry slip conferring coating compatible with said elastomeric material bonded thereto and said coating comprising (i) a binder and (ii) absorbent microparticles, said microparticles having an average diameter within the range from about 4 to about 20 microns and an oil absorption higher than about 180 g of oil per 100 g of said microparticles;
- and
- a damp slip-conferring amount of a surfactant applied to said wearer-contacting surface.
A flexible article displaying slip properties with respect to damp and dry mammalian tissue without use of powder lubricants comprising:
- a substrate layer comprising an elastomeric material, said layer having a wearer-contacting surface, said surface having a dry slip conferring coating compatible with said elastomeric material bonded thereto and said coating comprising (i) a binder and (ii) absorbent microparticles, said microparticles having an average diameter within the range from about 4 to about 20 microns and an oil absorption higher than about 180 g of oil per 100 g of said microparticles, said microparticles being enveloped by said binder but partially protruding therefrom thus imparting to said surface a microroughened appearance;
- and
- a damp slip-conferring amount of a surfactant applied to said wearer-contacting surface.
A flexible article displaying slip properties with respect to damp and dry mammalian tissue without use of powder lubricants comprising:
- a substrate layer comprising an elastomeric material, said layer having a wearer-contacting surface, said surface having a dry slip conferring coating bonded to said elastomeric material said coating comprising (i) a binder and (ii) absorbent microparticles, said microparticles having an oil absorption higher than about 180 g of oil per 100 g of said microparticles;
- and
- a damp slip-conferring amount of a surfactant applied to said wearer-contacting surface.
Dependencies are inferred from the claim text.