Closure fastener for hinged packages made of deep drawn plastic foil

Claim 1

In a package of the type wherein two complementary halves are formed with a series of facing deep-drawn compartments, said two halves being joined together along one margin by a bridging strip defining with the respective adjacent margins of the two halves a pair of spaced parallel bending lines whereby the two halves may be folded together along said bending lines in face-to-face closed relationship, said two halves being provided with complementary integrally formed male and female fastening means for respective operative engagement when the package is closed, each of said halves also being provided respectively with at least one spacing projection having a surface for abutting engagement with the respective surface of a spacing projection of the other of said halves when the package is closed, the surface of a spacing projection of one of the halves being provided with an integrally formed male fastening and guiding means for operative engagement with a complementary female fastening and guiding means integrally formed in the respective abutting surface of a spacing projection of the other of said halves, the leading portions of the respective last-mentioned male and female fastening and guiding means being provided with respective complementarily formed tapered guide surfaces for relatively laterally positioning the said first-mentioned male and female fastening means prior to operative engagement of said fastening means.