Plastic toy bricks have convex particles on one side and grooves that can be embedded in convex particles on the other side. There are many shapes and sizes, which rely on children to do their own brains. It can spell out endlessly changing shapes, which is very addictive.
Manufacturing bricks requires an injection mold and a plastic injection molding machine. After the brick mold entering the injection molding machine, the plastic raw material is vacuum dried and then pushed into the silo. During production, these particles enter the injection molding machine through a pipe. The machine uses very precise molds-accuracy tolerances are only 0.002 mm. The machine melts the pellets at a temperature of 232 degrees Celsius, then injects the molten plastic into a mold and applies a pressure of 25 to 150 tons. After about several seconds, the new bricks are cooled and production is complete.
As the video showed: