Wedge activated zipper

A reclosable bag comprising:

• a first wall and a second wall joined to form an enclosure with a mouth defined by wall edges;
• and
• a closure for selectively opening and sealing said mouth, said closure comprising a first profile extending along an internal surface of said first wall and a second profile adapted to interengage with said first profile and extending along an internal surface of said second wall,
• wherein said first profile has a first interlocking member, a second interlocking member and a spreader comprising a first wedge extending longitudinally along said first profile between said first and second interlocking members, and wherein said second profile has a first interlocking member and a second interlocking member spaced apart from said first interlocking member along said second wall, said second profile first and second interlocking members interengaging with said first and second interlocking members, respectively, of said first profile to interengage said first and second profiles,
• said spreader on said first profile occupying a portion of the space between said second profile interlocking members to further separate said first and second interlocking members on said second profile from one another after said first and second profiles are interengaged, so that said first and second profiles may be more effectively interengaged when said reclosable bag is closed.