Method and apparatus for making reclosable bags with fastener strips in a form fill and seal machine
March 9, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3172443 3815317 Reclosable bags, apparatus and method Tube former apparatus Packaging material and package Thin wall reclosable bag material and method of making same Method and apparatus for making reclosable bags in a form, fill and seal machine Steering, joining and guiding mechanism for zippered film Apparatus and method for forming reclosable storage containers Patent #: 4745731 InventorApplicationNo. 166024 filed on 03/09/1988US Classes:53/412, Package opening device (e.g., tear strip)53/133.1, Adjunct comprising provision to allow access to contents, e.g., spout, straw, drain, opening, etc.53/139.2, Reclosable, e.g., ziplock (TM) or with valve53/451, Vertically formed, filled, and sealed tubular package53/551Vertically disposed tubeExaminersPrimary: Spruill, Robert L.Assistant: Bianca, Beth Attorney, Agent or FirmForeign Patent References
International ClassesB65B 061/18B65B 009/08 AbstractA method and apparatus for forming a tube and bag from a supply of thin thermoplastic film with the film being formed into tubular shape about a filling tube with the edges of the film brought together and joined solely by a zipper strip having reclosable pressure interlocking members thereon with the zipper strip preferably heat sealed to the film and the zipper strip having a web between the pressure interlocking members which provides a tamper-evident juncture between the edges of the film so that the web must be severed for access to the interior of a bag formed from the film, and individual bags formed from the continuous tube by filling the tube through the filling tube and cross-seaming and cutting individual bags from the continuous film tube.Field of SearchForming a cover adjunct or application of a cover adjunct to a coverPackage opening device (e.g., tear strip) Enclosing contents within progressively formed web means Longitudinal tube formed from single web Vertically disposed tube Concurrent severing Vertically formed, filled, and sealed tubular package | |
