YU37901A - Plastic screw cover with double sealing for plastic bottles - Google Patents

Abstract

The invention refers to the plastic screw cover with double sealing of the plastic bottles. Cover (1) has the usual parts, i.e. body (2) of the cover (1) which has the upper part (1a) in the shape of a disc and cylinder cover (1b) that has grooves (8) from the outer side for holding, and from the inner side the disconnected screw (3), and the safety ring (5) has been attached at the body (2) of the screw (1). For the sake of good sealing at the upper end (1a), there are two concentric sealing rings (6, 7). The outer ring seal (7) has the external surface in the form of cylinder, and the inner surface with the insignificant protrusion and sideway cut line. The inner ring seal (6) has the inner side in the shape of cylinder, and the outer side with clearly shown protrusions (5) and sideway cut edge. The investigations have shown that the application of the cover, in accordance with the invention prevent the dripping of the contents and loss of carbon dioxide from the bottle even in the unfavorable conditions of storage and transport.