Plastic bottle especially for internal nutrient solution has port system with plug for sterile sealing of bottle, and protective screw cap acting as guide for spike to deliver solution

摘要

The plastic bottle consists of a body (1) and a port system (2) for fastening to a connection system with spike to transfer the nutrient solution. The port system has a plug (3) for sterile sealing of the bottle, and a cover (4), e.g. a screw cap, for the plug. Plug or cover is formed as a guide part to hold the delivery spike, and the plug has a weak zone (9) to be cut by the spike, to form a fluid connection. The plug has an outer cylinder part (5) fitted sealing into the bottle neck, with an outer ring-shaped part (6), which engages sealing on the outer neck edge. A sealing washer of oxygen-proof material with low permeation coefficient. The cover may be a foil of oxygen-proof material with low permeation effect. The plug is of oxygen-proof material with low permeation coefficient.