Plastic container and closure

Claim 1

A plastic container, having a bottom portion (1) adapted to form a storage space and made of a relatively thin, preferably embossed, flexible plastic material, and a lid member (2) adapted to be inserted when closing the container, inside the edges (8) of the bottom portion at the opening thereof, the sidewalls (3) of said bottom portion at a slight distance from said opening having an inwardly facing groove extending around the entire periphery of said opening; the lower wall of said groove thereby forming an abutment surface (5) for said lid member (2); said bottom portion sidewalls gradually increasing in thickness from said edges toward the top wall of said groove and extending substantially around the entire opening; thereby to form one part of a snap lock arrangement cooperating with said lid member, and wherein said lid member (2) has a depending sidewall extending between said edges and said abutment surface; the lower end of said lid member sidewall having an outwardly projecting ridge (7) extending around less than the entire circumference thereof so as to present a no-ridge area for said lid member sidewall; said ridge comprising the other part of the snap lock arrangement and being adapted to lie wholly within said groove against said abutment when closing the container; said lid also having a tongue member (9) thereon projecting outwardly from the container for facilitating opening thereof, said tongue member being located above said no-ridge area, whereby said snap lock arrangement is not effected at said no-ridge area and easy opening of said lid is therefore made possible.