What’s the difference between Vacuum extruder and non-vacuum extruder?

1) Vacuum brick extruder for clay brick making machinery can make three kinds of brick:solid brick, porous brick and hollow bricks. To produce different kinds of bricks by changing the different brick die;
2) Another type is the common clay brick machine, non vacuum brick extruder, can only produce solid bricks. Vacuum brick is extruded out of the vacuum extruder. And non-vacuum extruder has no extraction equipment, so the brick hardness is lower than vacuum brick;
3) The vacuum brick machine is first extracted with air and water and then fired, the production time and firing time is shorter, rapid prototyping.Greatly reducing the production cycle time.