Main | Learn all about Candle Making Terms and Definitions »
Rubber Molds
By admin | November 5, 2007
Using rubber molds for candle making has many advantages. In this article, I explain the benefits and disadvantages of the different types of rubber molds.
There are three materials that rubber molds are made from; Latex, Polyurethane and silicone. Latex was the original rubber mold but with advances in the polymer industry, latex molds are quickly becoming extinct.
Polyurethane Rubber Molds: Polyurethane rubber molds are great for candle making. They are flexible but they do not stretch well. Polyurethane molds when stretched do not always retain their original shape. Because they do not stretch as well, some polyurethane molds come with a split down the side that allows them to be demolded easier. This does leave a noticeable parting line. Polyurethane rubber molds are usually cheaper than silicone rubber molds. They do need release agents and sometimes have a strong odor that can pass to your candle. Many large pillar and taper candles are made from polyurethane. When your candle hobby turns into a thriving business, polyurethane molds are a definite choice for mass manufacturing of unique shaped candles.
Storing and cleaning of polyurethane molds: Polyurethane molds should not be stacked or stored in a distorted position. If they are stored in a distorted position they will stay this way and could become unusable.
Warm water and soap will be sufficient to clean these molds. Make sure that the water has either dried or evaporated before using the molds again.
Water and wax do not mix.
Silicone Rubber Molds: Silicone rubber molds are the most expensive. They have superior qualities when compared to their counterparts. They don’t require a release agent. They come in many sizes, shapes and flexibilities.
They will stretch to some degree and retain their original shapes. They are usually one piece and reveal no parting line.
Storing and cleaning of silicone molds: Silicone molds should not be stacked or stored in a distorted position. If they are stored in a distorted position they will stay this way and could become unusable.
Warm water and soap will be sufficient to clean these molds. Make sure that the water has either dried or evaporated before using the molds again.
Water and wax do not mix.
Topics: Rubber Molds |