Knowing the difference between plastic and silicone mould is very important, to make sure that your end product is successful. Both types of moulds are useful in different industries, so knowing your limitations is necessary. It’s not exactly impossible to use both of them for everything but it’ll sure make your life much harden when you choose a wrong mould for a wrong job.
Plastic mould is usually much cheaper than the silicone mould is. But they are usually also much less flexible than the silicone moulds are. So it depends on what you’re planning to use your plastic moulds for, this non-flexibility can be a good or work against you. The good thing is, if you do break it, it’s much cheaper to replace, than replacing the damaged silicone mould would be. Firm plastic moulds are good to use with chocolates, once the chocolate is set, they will simply fall out of the moulds.
Silicone moulds are very flexible and demoulding can be much easier than with the plastic moulds. Unfortunately silicone moulds usually, cost two to three times of the price of the plastic moulds. Silicone mould works very well with fondant and gumpaste. Larger size silicone moulds can be used with different frozen and baked desserts as well as savoury foods.
There are two types of silicone moulds out there – shiny and non-shiny. It doesn’t make much of a difference in food industry. If you’re using your silicone mould for resign, it makes all the difference in the world. If the silicone mould is shiny, the resign casting should have shiny finish to it as well.
So there are quite a few pros and cons with both – plastic and silicone moulds. You just need to know what your project is and choose a mould according to that.