Apparatus for coating the inside surface of metal containers with polyolefin materials

摘要

Apparatus for coating the interior surfaces of metal containers by electrostatic deposition of specific polyolefin compositions on the separate parts of the containers prior to assembly of the containers and melting of the polyolefin compositions, which includes a first spray booth containing at least one electrostatic powder spraying device for spraying a polyolefin composition powder, the first spray booth being adapted for spraying the bottoms and lids of the containers, means for conveying the bottoms and lids of containers in the first spray booth, a second spray booth containing at least one electrostatic powder spraying device for spraying a polyolefin composition powder, the second spray booth being adapted for spraying the bodies of the containers, means for conveying the bodies of containers in the second spray booth, and at least one electrostatic generator connected to the spraying devices.