The silicone stamping printing process on the market is usually to imprint the logo of one or more clothing brands on clothing such as short-sleeved T-shirt, long-sleeved T-shirt, sportswear jacket such as the left chest above the prominent position, most of the fabrics of this kind of clothing are made of cotton and cotton blend, because the liquid silicone has a strong adhesion to such fabrics after curing. It is difficult to fall off without greater external force, and for this reason, liquid silica gel is widely used in clothing printing. However, due to the single color of the silicone stamping process, and the relatively low production efficiency, the dropping glue process is now slowly adopted, the color is more diverse, and the production efficiency is greatly improved.
Characteristics of molded silica gel
Molded silicone also belongs to the liquid silicone rubber, according to the packaging classification belongs to the two-component silicone, the composition of the following figure, when used in accordance with a certain proportion of mixed evenly, filled into the mold, and then through high temperature molding on the surface of the fabric, the formed silicone Logo is simple and beautiful, moderate elasticity, giving clothing more advantages.
|
Component |
A component |
B component |
|
Ingredient |
Base glue,catalyst |
Crossing linker,inhibitor |
The related physical properties of our 360W series molded silica gel are as follows:
|
Vulcanization |
Before vulcanization |
After vulcanization |
|||
|
Time |
Temperature |
Viscosity(M pa.s) |
tensile strength |
tear strength |
Hardness
|
|
15-20S |
170-180℃ |
13W-68W |
3-4 times |
4.4Mpa |
42-45shoreA |
Molding equipment and mold of silica gel
The equipment used in the molding process is hydraulic molding press, vacuum machine, etc., the mold is mostly copper and aluminum mold, molding machine generally has a heating device in the head part, before starting work, the temperature needs to rise to 170-180 ° C in advance, the theoretical pressure of 3T-5T, the molding time is about 30 seconds.
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