SEALING STRUCTURE Russian patent published in 2004 - IPC

FIELD: liquid storage equipment, particularly for milk storage. SUBSTANCE: bottle has body of moldable plastic material and injection molded unit including spout and cap. Unit may be connected to bottle body by fusion after bottle body filling with liquid. Body has relative wide neck for increasing filling speed thereof. The bottle is especially suitable for blow molding on plant located close to dairy factory where bottle is filled with liquid and fused with the unit during the single continuous process. Foil is arranged between bottle body and unit. Spout has base part connected to body and having removable annular projecting member, which is connected to pull ring and secured to foil. Annular projecting member is separated from body by frangible area. A number of teeth projecting downwards are formed on frangible area or near frangible area. Each tooth has saw-shaped profile inclined inside towards base part center so that pull ring removal leads to foil breaking by teeth. Base part has weakened annular groove closed by cap skirt during bottle sealing. Due to groove forming attempt for base part separation from bottle neck results in base part damage and cup rupture which indicates unauthorized bottle opening. EFFECT: reduced mass, simplified production, increased reliability. 10 cl, 11 dwg