| CPC B32B 27/08 (2013.01) [B32B 1/00 (2013.01); B32B 7/12 (2013.01); B32B 27/36 (2013.01); B65D 65/40 (2013.01); B65D 65/42 (2013.01); B65D 75/008 (2013.01); B32B 2250/244 (2013.01); B32B 2255/10 (2013.01); B32B 2255/20 (2013.01); B32B 2270/00 (2013.01); B32B 2307/31 (2013.01); B32B 2307/7244 (2013.01); B32B 2307/7246 (2013.01); B32B 2439/46 (2013.01); B32B 2439/70 (2013.01)] | 27 Claims |
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1. A pouch comprising:
a first panel having an upper end, a lower end, an interior surface facing an interior of the pouch, and an exterior surface at an exterior of the pouch;
a second panel opposite the first panel, the second panel having an upper end, a lower end, an interior surface facing the interior of the pouch, and an exterior surface at the exterior of the pouch, the first and second panels cooperating to define at least a portion of a cavity, the upper ends of the first and second panels spaced apart from the lower ends of the first and second panels in an axial direction;
a bottom gusset panel extending between the lower end of the first panel and the lower end of the second panel and defining a lower end of the cavity, the bottom gusset panel having an interior surface facing the interior of the pouch and an exterior surface at the exterior of the pouch, wherein the bottom gusset panel is folded along a fold line extending parallel to the lower ends of the first panel and the second panel when the pouch is empty, the fold line spaced apart from the lower ends of the first and second panels toward the upper ends of the first and second panels, wherein a first axial extent of the pouch between the lower ends of the first and second panels and the fold line defines a gusset region, and wherein a second axial extent of the pouch between the fold line and the upper ends of the first and second panels defines a non-gusset region, the bottom gusset panel configured to permit the lower ends of the first and second panels to be spaced apart from each other to expand a lower end of the pouch when the cavity is at least partially filled;
a first side seal region extending in the axial direction, wherein the first and second panels are sealed to each other along a first peripheral edge of the non-gusset region and wherein the first and second panels are sealed to the bottom gusset panel along a first peripheral edge of the gusset region;
a second side seal region extending in the axial direction and transversely opposite the first side seal region, wherein the first and second panels are sealed to each other along a second peripheral edge of the non-gusset region and wherein the first and second panels are sealed to the bottom gusset panel along a second peripheral edge of the gusset region;
a first bottom seal region wherein the first panel is sealed to the bottom gusset panel along a bottom peripheral edge of the gusset region;
a second bottom seal region wherein the second panel is sealed to the bottom gusset panel along the bottom peripheral edge of the gusset region;
a seal region at an upper end of the pouch that is configured to close the cavity when sealed;
wherein the first panel, second panel, and bottom gusset panel are formed of a polyester-based film structure; and
wherein one or more of the first panel, second panel, and bottom gusset panel are formed of a multi-ply film structure comprising:
a first ply comprising:
a first layer formed of a first polyester-based polymeric composition, wherein the first polyester-based polymeric composition comprises polybutylene terephthalate, polyethylene terephthalate, or a blend thereof, the first layer having a first surface and a second surface opposite the first surface;
a second ply comprising:
a second layer, the second layer having a first surface and a second surface opposite the first surface, and wherein the second layer is a sealable polyester layer;
a third layer formed of a second polyester-based polymeric composition, wherein the second polyester-based polymeric composition comprises polybutylene terephthalate, polyethylene terephthalate, or a blend thereof;
a fourth layer formed of a ceramic coating, the fourth layer having a first surface and a second surface opposite the first surface, wherein the first surface of the fourth layer faces the adhesive layer; and
a fifth layer, the fourth layer interposed between the fifth layer and the third layer; and
an adhesive layer interposed between the first ply and the second ply, the adhesive layer laminating the first ply to the second ply, wherein the first surface of the third layer faces the second surface of the first layer.
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