Cap with one-way de-gas feature

A cap with a one-way de-gas valve, the cap comprising:

• an outer wall with a recloseable connection extending downwardly from a top wall;
• an inner wall extending downwardly from an inner portion of the top wall, an inside surface of the inner wall and the inner portion of the top wall defining a cavity with an open bottom and an air escape path;
• an insert valve mounted within the cavity, the insert valve forming a seal with the inside surface of the inner wall and having an upper surface, the upper surface, the inside surface, and the inner portion defining a chamber in fluid communication with the gas escape path;
• a flexible septum disposed within said chamber, the septum seated on the insert valve and sealing one or more apertures in the insert valve;
• and
• a viscous material disposed between the septum and the insert valve, the viscous material exerting an adhesion force tending to maintain the septum seated on the insert valve such that the apertures are sealed;
• the septum being capable of at least partially unseating in response to gas pressure acting through the apertures and exerting a force greater than the adhesion force.

A resealable closure for a package containing gas-emitting products, the closure comprising:

• a cap including,
• an outer wall extending downwardly from a top wall, the outer wall including a connection adapted to mate with a complementary connection on a pour spout,
• an inner wall extending downwardly from an inner portion of the top wall, the inner wall having an inside surface, the inside surface and the inner portion of the top wall defining a cavity with an open end and an air escape path,
• an insert valve mounted at the open end of the cavity, the insert valve including,
• a base with one or more apertures extending from the open end of the cavity to outside the cavity, and
• a peripheral portion adapted to form a seal with the inside surface of the inner wall,
• the insert valve, the inner wall, and the inner portion of the top wall defining a chamber within the cavity, the chamber being in fluid communication with the gas escape path, and
• a septum disposed within said chamber, the septum seated on the base of the insert valve and sealing the one or more apertures in the base of the insert valve, the septum being capable of at least partially unseating in response to increased gas pressure outside of the chamber acting through the apertures;
• and
• a pour spout attached to the package, the pour spout including,
• a hollow cylindrical member protruding through an opening in the package, the cylindrical member being open to contents within the package at an inner end and open to the outside of the package at an outer end, the cylindrical member having a connection for receiving the cap at the outer end, and
• a flange extending radially from the inner end of the cylindrical member, the flange being adhered to the inside of the package.