(dub) 5 : Steam Gorilla Guide

: The resulting material is incredibly tough. In a demonstration, Kinro attempts to pierce a paper shield with his spear, only for the spear to shatter upon impact.

: The paper-shields serve as lightweight, bullet-resistant (or spear-resistant) armor for the vehicle, allowing the Science Kingdom to charge into Tsukasa's territory for the rescue of Chrome. (Dub) 5 : Steam Gorilla

For more discussion on the science behind this episode, you can check out community threads on the Dr. Stone Reddit or the AnimeDubs subreddit . : The resulting material is incredibly tough

In the context of the anime , the "paper" referred to in the episode titled " Steam Gorilla " (Season 2, Episode 5) is Carbon Fiber Reinforced Plastic (CFRP) , or more specifically, hardened paper armor . For more discussion on the science behind this

: Senku creates a primitive but powerful composite material by layering paper and coating it with liquid plastic (formulated from coal tar and other chemicals).

Watch the Science Kingdom build and test their technological marvel in this clip: