C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
117/101, 117/121
C08J 7/12 (2006.01) B05C 3/18 (2006.01) B05D 1/26 (2006.01) B05D 7/02 (2006.01) B29C 71/00 (2006.01) C08J 7/04 (2006.01)
Patent
CA 2040694
ABSTRACT A method and apparatus for modifying the surface region of a polymer article without altering the original shape and hardness of the article and without streaking or coating the surface of the article with the modifier ingredient incorporated therein. The apparatus includes an applicator unit having a gap extending therethrough. An applicator module is disposed within the appli- cator unit for flowing a solution of the modifier ingredient in a solvent through a confined area onto the surface of the article to be treated as it is transported through the gap to provide a uniform coating of the solution thereon. At least a portion of the gap has an upper surface with a configuration substantially identical to the configuration of the surface of the article to be treated. Preferably, the polymer article is immersed in a liquid bath as it is transported through the gap and the solution is pro- vided on the surface of the article through the liquid bath to prevent the solution from contacting the air. The residual solu- tion not incorporated into the surface of the article is removed therefrom. The step of removing the residual solution may include applying a vacuum to the surface of the article, applying water onto to surface of the article, or providing a wiper in the gap having a bottom surface disposed to contact the surface of the article to be treated as it is transported through the gap.
Bremer Michael F.
Burchill Michael T.
Rutkowski Ronald D.
Atochem North America Inc.
Bremer Michael F.
Burchill Michael T.
Kirby Eades Gale Baker
Rutkowski Ronald D.
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