Blister package with means for securing blister

Means for securing a first part, of plastic material, such as a blister package, to a second part, such as a sheet of cardboard, said securing means comprising:

• at least one projection to be passed through a hole in the second part, each projection having an inner tubular portion to be located in the respective hole, and an outer portion, said outer portion having a first tubular portion connected to said inner tubular portion, a second tubular portion of a diameter smaller than said first tubular portion, an annular shoulder portion interconnecting said first and second tubular portions, and a vaulted termination portion connected to said second tubular portion and closing said projection;
• said projection being adapted to occupy a first position in which said first and second tubular portions project outwardly beyond the respective hole, and a second position in which said second tubular portion is snapped inside said shoulder portion and at least partly inside said first tubular portion and in which said first tubular portion is widened radially outwardly beyond the width of and outside the hole, whereby said projection forms a rivet locking said first part to said second part.