| 摘要 |
<p>My invention compises positioning a shaft concentric with a glass tube and casting con-cellular elastomeric polyurethane around the shaft, curing the same to form a polyurethane squeegee roller around the shaft, and then removing the finished roller from the glass tube. The glass tube is internally coated with a release agent to facilitate the removal of the finished roller from the tube. The shaft may be coated with an insulating adhesive between the end portions thereof to assist in securing the polyurethane roller to the metal shaft. The finished roller made by my method will have a Shore A durometer value of between 20 and 40 and a surface finish of between 2 and 10 micro-inches.</p> |
