Use fish bladder glue to bond them together.
In ancient China, carpenters often used animal glue, such as pigskin glue and fish bladder glue. As the names suggest, they are extracted from pigskin and fish bladder, and their main component is collagen.
Chop them up, cook them for a long time, and then pound them in a stone mortar to extract the glue.
A two-pounds bundle of intestines; this consolidated all the intestines collected from several nearby settlements during that period.
He was actually filled with anxiety, unsure if this would create a suitable material for tires.
The intestines have good elasticity of their own.
But they are not sturdy enough.
He could only hope that bonding more intestines together would make them strong enough.
He decided to conduct an experiment first.
Many layers of intestines were bonded layer by layer.
Using fish bladder glue for adhesion.
The actual bonding process was very cumbersome.
