Customized fireworks paper tube

How to roll out stronger paper tubes? Wet it with water first, then roll it with force, try not to have bubbles, and apply white glue inside, and then dry it with a hair dryer< Br>What is the weight of the paper tube? The calculation formula of paper tube weight: weight=(inner diameter+wall thickness) * inner diameter * 3, 14 * 0.77 * 1.1 * length.

Customized processing of paper tube and tube

Green and environmental protection of industrial paper tubes: industrial paper tubes are harmless to human health after long-term use, and the production of products conforms to the enterprise production standards