Expanding bag
a bag and expansion technology, applied in the field of expanding bags, can solve the problems of increasing the cost of products, reducing bulky bag constructions, so as to improve the practical value of products, improve the display, packaging and storage, and reduce the size
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embodiment
[0029] Backpack Embodiment
[0030]FIGS. 5-7 illustrate the incorporation of the invention in a backpack. Referring to those figures, a first partial bag 60 is designed to receive the folded and compressed second partial bag 62 which is larger than the first bag 60. Thus, the first partial bag 60 includes a front panel 64 which is generally planar, a peripheral or circumferential side panel 66, and a portion of the second, larger partial bag 62. The front panel 64 includes a display section or badge 68. The front panel 64 further includes a zipper fastener 70 to the side panel 66. The zipper fastener 70 extends partially about the circumference of the side panel 66 to permit access to the interior of the first partial bag 60 and thus to the interior of the second bag 62 when in the form of FIG. 5.
[0031] A second zipper fastener 71 is provided about the periphery 73 of the side panel 66 of the first partial bag 60. Side panel 66 is also sewn or attached to the second bag 62 at peripher...
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