| 摘要 |
A square or rectangular cross-section collapsible flexible container has an outlet nozzle 28 projecting from rectangular or square cross-sectional shoulders 27. The nozzle is closable by a non-circular double walled cap 35, a snap fit engagement occurring between an inward internal projection 38 of the cap and a radially outward projection 32 of the nozzle, to restrict axial movement of the cap 35 from the nozzle 28. External walls 37 of the cap have the same cross-section as the shoulders 27, which have cam surfaces 34. Rotation of the cap 35 relative to the shoulders causes the cam surfaces to move the cap away from the shoulders 27 and disengage the cap 35 from the nozzle 28. To form the container, a shoulder piece 21 is welded to a square cross-section tubular body 15B which has been formed from a flat ribbon with a longitudinal seam adjacent a corner of the body. |
