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IDEA 1: TRIANGULAR BAGS. Instead of traditional bags, try bags that are shaped like triangular prisms. 2.5”. Side view – traditional bags. 3D view – individual prism bag. These can be packed comfortably into 2 rows of five, with lots of slack space. 3.3”. Side view – prism bags.
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IDEA 1: TRIANGULAR BAGS Instead of traditional bags, try bags that are shaped like triangular prisms 2.5” Side view – traditional bags 3D view – individual prism bag These can be packed comfortably into 2 rows of five, with lots of slack space 3.3” Side view – prism bags Bottom view – prism bags
MATHEMATICALLY… • Traditional bags have a max depth of 2.5”. Let’s assume traditional bags have an approximately oval cross-section and a width and height of 4” and 5” respectively. • Using the formula (Pi*A*B) for area of ellipse, this gives a volume of (Pi*1.25*2.5) * 4 = 39.25 cubic inches for each bag. • In practice this should actually be a smaller number due to tapering near the sealed areas. Only 8 bags can fit into a shipping case. • Each shipping case has a total volume of 10*4*10 = 400 cubic inches. This results in wastage of more than 86 cubic inches. 5” B 4” 2.5” A
MATHEMATICALLY… • To fit 1 row of triangular prism bags comfortably into a 10” case, each bag should have a maximum width of 3.3”. • Giving them the same width and height of 4” and 5”, each bag would have a volume of (0.5 * 5 * 3.3) * 4 = 33 • Given a shipping case with 400 cubic inches of volume able to fit 10 bags, this would result in wastage of 70 cubic inches – 16 cubic inches less than if traditional bags were used. 5.265” 4” 5” 3.3”
IMPLEMENTATION • The bag’s construction is inspired by origami, the art of paper folding. It would need only one rectangular sheet of the same material as the traditional bag, and be sealed at one location. However, the manufacturing process for the bag might be tricky to automate. • For extra durability, the bag can be sealed at three locations SEAL SEAL SEAL SEAL
IMPLEMENTATION • An alternative is to get a paper bag manufacturer to create it with your material, but using the same folding technique. This may be cheaper, but it might not be as durable as there will be a lot of pressure inside the bag at a high altitude.
OTHER BENEFITS • These bags do have benefits apart from packing efficiency: • Brand differentiation – I certainly haven’t seen any snack bags shaped like this before and it would be a novelty in the supermarket • Easier to grab and share snacks when opened, as it would resemble a trough and be more able to stand on its own. By tweaking the width and height, it can be made to resemble a lunch bag which is even easier to grab and go. CUT
SUMMARY OF IDEA 1 • Main benefits: • Increases packing efficiency in each shipping container • High potential for brand differentiation • Main problems: • Packaging might be tricky to manufacture and implement
IDEA 2: EXPANDING SHIPPING CASES • Use shipping cases that can expand together with the snack bags • This can be done using cardboard shipping cases which are crimped in the middle, like a straw
IMPLEMENTATION • These shipping cases can be stacked vertically so that they can expand upwards • To protect the goods from the weather, the truck top should be covered with a tarp sheet and some insulation (like a shower cap) • However, there is a possibility that the snacks at the bottom may be crushed from compression
IMPLEMENTATION • Alternatively, the cases can be stacked horizontally with the back end of the truck open and covered with some strong netting • Not sure if this is legal
SUMMARY OF IDEA 2 • Main benefits: • Increases the number of bags that can be shipped, using the same packaging • Main problems: • Increased cost of shipping cases (though it should not be much) • May need to modify trucks to open top/open end and add cover accordingly