High strength packages and packaging materials

摘要

A package includes at least one closed end including a pair of opposed package panels, each face of the pair of opposed package faces including an interior side and an exterior face, at least one panel comprising a woven polymer material, wherein the interior faces of the package panels are joined to one another to define an interior joined area, the joined panels being folded towards and joined to the exterior face of the package to define a second joined area.

主权项

1. A package comprising:
a packaging material comprising a laminate, the laminate comprising a woven polymer substrate having opposite first and second faces, a first heat seal layer mounted to the first face of the substrate, and a second heat seal layer mounted to the second face of the substrate; the packaging material being configured as a tubular structure so that a first panel of the packaging material and a second panel of the packaging material are in an opposed, facing relationship with one another, the first panel and the second panel each having an interior side, an exterior side, and an end edge, wherein the woven polymer substrate is positioned at least along the respective end edge of the first panel or the second panel; at least one sealed closed end of the tubular structure, the sealed closed end comprising
a first sealed area comprising a portion of the first heat seal layer of the interior side of the first panel and a portion of the first heat seal layer of the interior side of the second panel being heat sealed to one another in a facing, contacting relationship with each other; anda second sealed area comprising at least a portion of the first sealed area folded over and heat sealed to the exterior side of the first panel, such that a portion of the second heat seal layer of the exterior side of the first panel of the first sealed area and an adjacent portion of the second heat seal layer of the exterior side of the first panel are heat sealed to one another in a facing, contacting relationship with each other; and the woven polymer substrate having a softening temperature at which the woven polymer substrate will soften, and each of the first and second heat seal layers having a heat seal temperature that is lower than the softening temperature of the woven polymer substrate, wherein
the woven polymer substrate comprises woven polypropylene,the first heat seal layer comprises low density polyethylene,the first heat seal layer being mounted to the first face of the substrate comprises a tie layer of the laminate being positioned between the first heat seal layer and the first face of the substrate,the tie layer comprises a polymer blend comprising linear low density polyethylene and low density polyethylene, andthe polymer blend includes more of the linear low density polyethylene than the low density polyethylene.