Patent ID: 6834772
Filing Date: 2004-12-28
Classification: B29C,B65D

Abstract:
A package of a plastics material and consisting of a container and a lid,said container having a bottom connected with a cylindrical wall extending around an axis (CL), said wall, opposite the bottom, having a free end which defines an opening that gives access to the interior of the container, said wall having an annular engagement portion on the outer side at its free end, said lid comprising a substantially disc-shaped face portion with a peripheral skirt which forms an annular reception channel, extending around said axis (CL), for said free end, said reception channel being defined by a first side wall, a second side wall and a bottom wall, said first side wall being connected with the disc-shaped face portion, said second side wall comprising engagement means adapted to form a snap engagement with the engagement portion, said engagement portion and said engagement means comprising complementary engagement faces adapted to engage each other for establishing said snap engagement, said engagement faces being mutually parallel and planar and extending obliquely at an angle &agr; of between about 15Â° and about 40Â° relative to a normal to the axis CL, there being arranged between the engagement portion and the bottom wall an annular resilient sealing member which extends around the entire reception channel, and which, once said snap engagement has been established, engages an annular first face arranged in the reception channel and a second annular face arranged on the container at said free end, wherein said first face or second face exhibits an annular projection adapted to generate a further, local compression of the sealing member when the engagement faces engage each other, wherein said first face arranged in the reception channel defines an annular groove, and said sealing member is secured in the groove by adhesion or in another manner, and said second face exhibits the annular projection adapted to generate said additional, local compression of the sealing member, wherein the engagement portion and the engagement means are shaped such that an axial compression of the sealing member is provided during the application of the lid, said compression being partially relieved when said engagement faces engage each other, wherein radially outwards from the axis (CL) and in extension of said annular projection, the engagement portion exhibits an end edge arranged opposite the second side wall of the reception channel, and wherein the end edge and said second side wall between them define a ring-shaped space whose radial extent decreases in a direction away from the sealing member.