Old popcorn 10 air pressure pressure is 0.6 to 0.7 MPA.

With the old-fashioned popcorn machine popping different things are not the same, popcorn is generally 6.2-6.8 atmospheric pressure to open the pot, the popcorn is generally to 0.7 to 0.8 atmospheric pressure can be. Chinese old-fashioned popcorn machine is a kind of ancient popcorn machine, popcorn that "bang" a loud bang, is many 70, 80 Chinese people after childhood fun memories, the old-fashioned stove, gourd-shaped pressure cooker, sacks.

Old-fashioned popcorn principle:

Because of the heat, the pressure inside the machine slowly rises, reaching the required pressure (different raw materials need different pressure) to stop the heating, the popcorn machine twisted to the side, the mouth of the machine with a sack cover. The force pipe set in the small elbow, forcefully wrench the small elbow, so that it and the big elbow of the buckle loose.

So under the action of the pressure in the machine, the cover is opened, and the high-temperature and high-pressure gas inside the machine is sprayed out together with the processing materials. Jet process, because the outside pressure drops rapidly, making the internal gas inside the grain to the outside rapidly expanding, and thus the grain will be burst open.