| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a spout which is attached to a packaging bag, easily stuck to an inner face of the packaging bag when being attached, and is capable of preventing generation of any defective seal portion. <P>SOLUTION: In the spout having a hollow tubular part and a fitting part to be attached to a seal part of a peripheral edge of the packaging bag below the hollow tubular part, the fitting part has a plurality of projection parts on an outer surface, and a thin-walled part formed of a flat plate of the thickness (d<SB>1</SB>) of 0.3-1 mm with the width (d<SB>3</SB>) of an upper end being narrower toward the direction of a lower end of a body part is continuously provided in the height (h) direction on front and rear ends of the body part of a boat shape of the predetermined height (h) with front and rear portions forming an acute angle, or the fitting part has a plurality of projection parts on an outer surface, and a thin-walled part of the same width (d<SB>3</SB>), with the thickness (d<SB>1</SB>) of an upper end being 0.5-1.0 mm and the thickness (d<SB>2</SB>) of a lower end being 0.3-0.4 mm is continuously provided in the height (h) direction on front and rear ends of the body part of a boat shape of the predetermined height (h) with front and rear portions forming an acute angle. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
