Apparatus for spray coating of vessel mouths with silanes
AssigneeMerck Patent GmbH
InventorsDieter Kraft, Dieter Grohser
Life of this patent
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Abstract
Vessel mouths (1) are provided with a silane coating in order to improve the pouring behavior. For this purpose, there is an apparatus which has, on a rotatable nozzle holder (14), several spray nozzles (16) and blowing nozzles (17) directed tangentially to the edge (1a) of the vessel mouth (1). A stationary nozzle mandrel (12) forms, by means of its lower centering portion (13), a centering means for the vessel mouth (1). An air flow flows from the centering portion (13) out of air nozzles (20) directed rearwards and prevents spray material from penetrating into the vessel (2). The spray residues and solvent vapors which occur are sucked off from a suction bell (21) surrounding the vessel mouth (1).
Claims15
Apparatus for spraying mouths of vessels having necks with coating material as the vessels are indexed into alignment with the apparatus, the apparatus comprising:
- a support for positioning the apparatus above the vessel mouth, the support including a spindle;
- a mandrel for insertion into the neck, the mandrel having means therein for ejecting gas upwardly toward the bottle mouth to prevent coating material from entering the vessel;
- means moutning the mandrel on the spindle for selective movement into and out of the neck of the vessel;
- nozzle support means mounted on the spindle, extending laterally of the mandrel and being selectively rotatable about the mandrel;
- a plurality of coating material nozzles and air nozzles mounted on the nozzle support means and having openings oriented tangentially to the mouth for directing stream of coating material and air onto the mouth of the vessel to coat the mouth and dry the coating material, and
- means for rotating the nozzle support means through an arc less than 360.degree. in order to completely coat the mouth.
An apparatus for spraying a coating material on na mouth of a vessel, wherein the mouth has a central axis and an edge, the coating material being sprayed adjacent the edge, the apparatus comprising:
- at least one spray nozzle (16);
- means for positioning the vessel (2);
- means for rotating the spray nozzle (16) and the vessel (2) one realtive to the other in a rotational direction abou the central axis of the vesel mouth(1);
- a blowing nozzle (17) arranged next to the spray nozzle (16), the blowing nozzle trailing the spray nozzle (16) with respect to the rotational direction, the blowing nozzle being directed toward the edge of the mouth (1);
- and
- several air nozzles (20) for positioning inside the vessel (2) to produce an air stream from inside the vessel directed toward the vessel mouth (1).
Dependencies are inferred from the claim text.