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Attached Handles - Drawstring

The drawstring design relies on distributing the load along the bag's entire top, thus avoiding concentrating load stresses that can cause the bag to fail. The drawstring bag is more difficult to manufacture than most shopping bags. Designs vary in how the top hem of plastic is sealed over the string, and how the string emerges from this hem. Strings can be made of soft cord or flat plastic material. The bag in Movie 1 will fail in an unlikely spot -- can you predict where it will give way?


MOVIE 1:   1 minute 31 seconds
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