Elastomeric article with fine colloidal silica surface...

Details Elastomeric article with fine colloidal silica surface... Elastomeric article with fine colloidal silica surface...

Category

A - Human Necessities

Subcategory

41

Subsubcategory

D

IPC codes

A41D 19/00 (2006.01) B29D 99/00 (2010.01) A61B 19/04 (2006.01) B29C 41/22 (2006.01) B29C 67/06 (2006.01)

Type

Patent

Patent number

CA 2372590

Description

A surface-modified article is formed of an elastomeric matrix, such as a glove shape, and a plurality of fine silica particles affixed to at least a portion of the surface of the matrix, the outside surface in the case of the glove. The fine silica particles increase the coefficient of friction of the article surface. The fine silica particles may also be made electrically conductive, so that static charge at the surface of the article is dissipated. The silica particles are applied by mixing them into a coating composition, applying the coating composition to the surface of a mold, and solidifying a flowable elastomeric composition against the coated surface. The coating composition may include a coagulant or a parting agent.

L'invention concerne un article à surface modifiée formé sur une matrice élastomère en forme de gant, et une pluralité de particules de silice fines fixées à au moins une partie de la surface matricielle, la surface externe dans le cas du gant. Les fines particules de silice augmentent le coefficient de friction de la surface de l'article. Les fines particules de silice peuvent également être rendues électriquement conductibles, de sorte que la charge statique à la surface de l'article soit dissipée. Les particules de silice sont appliquées par mélange de celles-ci avec une composition de revêtement, par application de la composition de revêtement sur la surface d'une moisissure, et par solidification d'une composition élastomère fluide sur la surface enduite. La composition de revêtement peut comprendre un agent coagulant ou un agent antiadhésif.

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