Whether by car or bus, has been sitting on a soft chair, just contact cortex or cloth, but never concerned about upholstery or cushions in the world, just like drinking water comes from the same never concerned. After open curiosity, I wanted to reveal that a layer of “veil” to provide the story behind the plastic seat foam comfort and support in-depth inquiry under force.
Car seat foam actually almost feel and make bread – flour, then water, yeast mix were rubbing, then steaming on the stove. But this is certainly among essentially different, steamed buns physical foaming process is carried out by yeast.
The foam manufacturing car seat is actually a polyether, an isocyanate, such as benzene diisocyanate (TolueneDiisocyanate, abbreviated TDI), and water and additives are mixed methylene diphenyl diisocyanate (Methylenediphenyl Diisocyanate, abbreviated MDI) and the like after the reaction generated. Among them, water and isocyanate to produce carbon dioxide and polyurea, polyether and isocyanate polyurethane reaction, and like baking like a bubble after all of these mixed.
In the actual production, we will make use of a mold to form the shape of our post-bubble initiated need, we call reaction molding. Post-processing after that, the process is relatively simple, is to place it in the free state for aging. Because the foam is a viscoelastic material, its characteristics over time, the speed of those changes, it still would therefore we generally 8-24 hours, after which it stabilized hardness, and then get to the final assembly plant covered this is a seat foam production process.