Valve bag with alignment means
AssigneeBasic Packaging Systems, Inc.
InventorBernard F. Blankenship
Life of this patent
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Abstract
A valve bag and an interconnected series of valve bags is disclosed which have alignment means on the bag. This is shown as a continuous tunnel along a first edge of the interconnected bags for guidance into an automatic bag filling machine, for example, onto a mandrel threading the tunnel. Each bag has a valve formed by overlapping portions of panels of one wall of a bag. Parts of the overlapping portions are sealed together and other parts are left open between two valve side edge lines to form a valve from the overlapping material.
Claims16
An interconnected series of valve bags for cooperation with a reference line in a bag filling machine comprising, in combination, a first wall and a second wall connected together near all edges to form a substantially closed bag;
- said first wall being formed from first and second panels partially overlapping each other;
- at least one panel seal sealing between said first and second panels at the overlapping areas thereof with said panel seal terminating near a first valve side line transverse to a first edge of said bag;
- a second valve side line spaced from said first line and transverse to said first edge and including a seal between said first and second panels at the overlapping areas thereof;
- a valve being defined between said two valve side lines and the unsealed portions therebetween of said overlapping first and second panels;
- the interior end of said valve being defined by a portion of said first panel and said valve having an openable exterior end defined by a portion of said second panel, the overlapping of said first and second panels defining a self-closing valve after filling the bag with the desired contents;
- interconnecting means at least near said first edge connecting each bag to an adjacent bag to form an interconnected series of bags;
- means on said interconnected series of bags for alignment of said series of bags for guidance of the series of bags along a reference line of a bag filling machine;
- and
- said alignment means being capable of cooperation with the bag filling machine reference line after filling of the bag with the desired contents.
An interconnected series of valve bags comprising, in combination, a first wall and a second wall connected together near all edges to form a substantially closed bag;
- said first wall being formed from first and second panels partially overlapping each other;
- a tunnel formed adjacent a first edge of the bag by first and second portions of at least one of said first and second walls;
- said tunnel being defined between said first edge and a tunnel seal spaced from and parallel to said first edge with the tunnel seal being between said first and second tunnel portions;
- a plurality of panel seals sealing between said first and second panels at the overlapping areas of said panels with said plurality of seals terminating along a first valve side line perpendicular to said first edge;
- a second valve side line including a seal perpendicular to said first edge and sealing between said first and second panels at the overlapping areas of said panels;
- a valve being defined adjacent said overlapping areas between said two valve side lines and between unsealed portions of said first and second panels;
- the interior end of said valve being defined by an end of said first panel and the exterior end of said valve being defined by a portion of said second panel, the overlapping of said first and second panels defining a self-closing valve after filling the bag with the desired contents;
- and
- said tunnel portions being connected to adjacent bags to form an interconnected series of valve bags to guide, orient, and align the bags movable serially onto a mandrel in a bag filling machine to have the tunnel slittable near said first edge for release from the mandrel either before or after filling the same with the desired contents.
Dependencies are inferred from the claim text.