Closure for a spout of a thin-walled package

A closure assembly for a package with a flexible thin-walled bag for containing fruit juices and puree, yogurt, energy drinks and the like, comprising:

• a spout unit extending along a spout axis, comprising a connection portion, suitable for being hermetically applied to the bag, a spout and at least one spout cam portion;
• a closure which is applicable to the spout unit, comprising a cap which is engageable with the spout extending along a cap axis, wherein the cap comprises a cap wall comprising a lower edge in which at least one cap cam portion (35) is obtained;
• wherein the at least one cap cam portion is at least partially complementary to the at least one spout cam portion;
• wherein, in a disengagement configuration, by rotating the cap about the cap axis with respect to the spout, the interaction between the at least one cap cam portion and the at least one spout cam portion causes an axial lifting of the cap with respect to the spout;
• wherein the spout unit is made in a single piece of plastics material by means of injection molding and the closure is made in a single piece of plastics material by injection molding,
• wherein the spout unit comprises an upper plate orthogonal to the spout axis, and
• wherein the spout cam portion is close to the spout.