| 摘要 |
<p>A vacuum coating apparatus, comprises: an application stage 1 for applying a surface coating to a product, comprising a chamber 11 having inlet and outlet ports for passing a product through the chamber, means 19 located within said chamber for applying coating to the product, and means for subjecting said chamber to a partial vacuum sufficient to inhibit leakage of the coating from the chamber; and a recovery stage 2 located downstream of said application stage for recovering excess coating from said product, said recovery stage comprising a recovery chamber 12 having inlet and outlet ports for permitting passage of a product through the recovery chamber, said inlet and outlet ports being configured to closely correspond to the cross section of the product, means for subjecting said recovery chamber to a vacuum sufficient to draw air into said recovery chamber through said inlet and outlet ports such that air flow over the product in the region of the inlet and outlet ports removes excess coating, and means for collecting excess coating from said recovery chamber.</p> |
