METHOD OF FORMING A BONDED PACKAGE GUSSET

The present invention is directed to a method forming a bottom-gusseted package, wherein each package includes an inwardly-extending, pleat-like gusset at the bottom of the package. To permit heat-sealing formation of each package, the sleeve from which each gusset is formed comprises a lamination o...

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Bibliographic Details
Main Author Scott ROMENESKO
Format Patent
LanguageEnglish
Spanish
Published 25.02.2019
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Summary:The present invention is directed to a method forming a bottom-gusseted package, wherein each package includes an inwardly-extending, pleat-like gusset at the bottom of the package. To permit heat-sealing formation of each package, the sleeve from which each gusset is formed comprises a lamination of two differing polymeric materials, so that only an exterior surface of each sleeve exhibits the desired heat- sealing characteristics. To facilitate package formation, the sleeves from which the bottom gussets are formed are maintained in a temporarily closed or sealed configuration during package formation by providing a preferably frangible bond or seal at the edge of each sleeve. This result is preferably achieved by folding the laminate material, and temporarily sealing or joining an outer layer of the laminate material from which gusset is formed, while an inner layer is maintained in an unsealed condition. La presente invención se dirige a un método para formar un envase con fuelle inferior, en donde cada envase incluye un fuelle de tipo plisado que se extiende hacia dentro en el fondo del envase. Para hacer posible la formación del sellado térmico de cada envase, el manguito del que se forma cada fuelle comprende una laminación de dos materiales poliméricos diferentes, de modo que solo una superficie exterior de cada manguito exhibe las características de sellado térmico deseadas. Para facilitar la formación del envase, los manguitos a partir de los cuales se forman los fuelles inferiores se mantienen en una configuración temporalmente cerrada o sellada durante la formación del envase, proporcionando una unión o sello preferentemente frangible en el borde de cada manguito. Este resultado se logra preferiblemente doblando el material laminado y sellando o uniendo temporalmente una capa externa del material laminado a partir del cual se forma el fuelle, mientras que una capa interna se mantiene en un estado no sellado.
Bibliography:Application Number: MX20180002599