A sealed package system includes multiple sealed units separably interconnected to each other by tear lines, said units including opposed, substantially planar, tear-resistant flexible plastic sheets sealed to each other, preferably by heat sealing, about peripheral seal zones of the units to provide each unit with a central compartment adapted to retain and protect a material therein, seal zones between adjacent compartments including the tear lines for permitting separation of discrete sealed units from each other without disrupting the sealed integrity of the compartments thereof, each tear line including a substantially linear, continuous slit uninterrupted by bridge areas and being linearly aligned with the compartments in adjacent units interconnected by said tear line, the linear dimension of each of said continuous slits being greater than the greatest linear dimension of the linearly aligned compartments, as measured substantially parallel to said continuous slit.
Apparatus And Method Of Forming Covers For Flexible Commodity-Containing Packages
Method and apparatus for continuously forming covers; particularly covers that are attached to flexible commodity-containing packages. The preferred method of this invention includes the steps of continuously directing at least two webs into overlying relationship with each other; feeding the flexible commodity-containing packages between the overlying webs; pressing overlying webs into engagement with the flexible packages for attaching the webs to the packages to form a composite and severing the composite at spaced-apart intervals to form a plurality of discrete articles which have a cover including sections of the overlying webs. An apparatus for continuously forming the covers also forms a part of this invention.
Louis S. Hoffman - Morristown NJ Robert B. McClosky - Little Falls NJ
International Classification:
A65B 504 A65B 2500
US Classification:
426 87
Abstract:
A thin, substantially flat packaged unit includes a thin, substantially flat utensil in a protective sheath. The protective sheath includes a flat rigidifying member of substantially the same thickness as the utensil and surrounding marginal edges of the utensil, and flexible sheet material overlying the utensil and adhered to the rigidifying member. In a preferred construction the utensil includes a substance that is interactable with a fluid, and the protective sheath encloses at least the section of the utensil including the substance. A method of forming a thin, substantially flat packaged unit including a thin, substantially flat utensil in a protective sheath from a thin, substantially flat substrate and flexible sheet material. The method includes the steps of cutting the substrate inwardly of margins thereof to for the thin, flat utensil having marginal edges surrounded by portions of the substrate that constitute a rigidifying member of the protective sheath; and adhering the flexible sheet material to the rigidifying member in overlying relationship with the utensil, whereby the rigidifying member and flexible sheet material constitute the protective sheath for the utensil. In a preferred embodiment of this invention the utensil includes a substance which is interactable with a fluid, and this substance is provided on the utensil prior to adhering the flexible sheet material to the rigidifying member in overlying relationship with at least the section of the utensil which includes the substance.