Natural latex is a white emulsion. They are usually shipped from the production country to the United States from the producer to the United States, and then transported to the balloon factories by trains or trucks. The materials for making balloons include sclerosing agents, catalysts, oils, dyes and water, all of which are mixed in large open top cylinders and then transported to the balloon production line below. At present, almost all balloon production lines are produced by metal die immersion. For example, the mould for producing a circular balloon is like a small bulb. But before the metal die is immersed in the latex, the metal die must be immersed in a coagulant mixture made of calcium, water and oil before the coagulant is dried. The process of the balloon.
The second step of the process is to immerse the metal dies of different shapes into the open top cylinder of the loaded latex. Because it is used from top to bottom, the top of the balloon is the thickest and the neck is the thinnest. When the process is completed, the rudiment of the latex thin film will pass through a row of rotating brush head to the neck. The part is rolled up to form the shape we usually see. This process is carried out under the condition that the latex film is not solidified.
Now, the almost finished balloon will wash the remaining calcium with hot water together with a metal mold, and then put the latex film hardened for 20-25 minutes in a baking machine at a temperature of 200-220 degrees Fahrenheit. After hardening, the balloon will be printed or packed from the metal die, and the metal mold will be reused.