The production principle and production process of heat transfer silicone vinyl
Heat transfer silicone vinyl is a derivative of the simplified silicone heat transfer process, and its production principle is mainly to coat a variety of different chemicals on PET film, such as hot melt glue, vinyl silicone and some additives and inorganic pigments. The production process can be roughly divided into reverse transfer and direct transfer, the so-called reverse transfer is to evenly coat a layer of vinyl silicone with pigment on the PET film, and then coat a special material crossing linker for connecting vinyl silicone and hot melt glue (because there is an incompatibility between vinyl silicone and hot melt glue, which may lead to both materials appear to peel off in post-processing), and finally coated with hot melt glue (a kind of epoxy resin that melts when heated). The so-called direct transfer production process is exactly the opposite, but there is a difference, direct transfer can do more process effects on the surface of the silicone vinyl, such as glossy finish, matte finish, flocking finish, foaming finish, etc.
The post-processing technology of heat transfer silicone vinyl
In the post-processing of heat transfer silicone vinyl, mainly the whole silicone vinyl will need to be carved in the form of laser engraving or knife engraving, logo, letters, words, and then the above carved material will be printed on the surface of clothing, such as T-shirts, long-sleeved shirts, sweatpants and other clothing through the heat transfer machine. This processing technology, only need to invest a little manual equipment to open a printing factory, is a small investment but significant gain business.
How to judge the quality of heat transfer silicone vinyl ?
There are many kinds of heat transfer silicone vinyl on the market, the process is dazzling, the quality is uneven,judging the quality of silicone vinyl need to be tested to make a judgment, so where is the test standard? The first is the firmness of washing, any material printed on the surface of the clothing needs to have a strong adhesion, after repeated washing tests do not fall off, no damage, the test standard is generally the printed fabric into the washing machine at 60 degrees water temperature repeatedly washed for 48 hours do not fall off and damage is better. The second is the friction coefficient, the material printed on the surface of the clothing needs to have strong friction resistance, because the clothing used to wear is bound to experience external friction, if the gentle friction will damage the silicone mark, it is not the result we pursue, so the need for strong friction, repeated friction to test the friction coefficient of silicone vinyl. The other test standard contains tensile coefficient and acid and alkali resistance coefficient.
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