OTSU, Japan - A Japanese fireworks manufacturer and a university professor have jointly developed more environmentally friendly fireworks with water-soluble shell casings that naturally dissolve after use, in hopes of reducing the impact of fallen debris after displays.
A fireworks ball consists of gunpowder layers inside the outer shell, which shatters upon explosion and falls to the ground. While debris from conventional casings, typically made of kraft paper, takes half a year to decompose, the new shells incorporating water-soluble resin can dissolve in as little as one day.
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