With the development of the market economy, crystal signs have been used in the decoration industry and manufacturing industries. Such as trademarks, signs, badges, caps and other products. Gradually tend to arts and crafts, three-dimensional, high-grade, and improve the competitiveness of various products. Crystal signs must be able to use crystal glue. It is a modern surface decoration material, the main component of polymer transparent resin, referred to as A. Epoxy acrylic resin plus catalyst, referred to as B component, divided into two kinds of soft crystal glue and hard crystal glue. Soft crystal glue is divided into (UV crystal glue), generally applied to the trademark of baseboard soft materials, signs, such as stickers trademarks, soft plastic signs, paper trademarks and so on. Hard Crystal Glue (also divided into UV Crystal Glue) is generally applied to the trademark, label, badge etc. of the hard floor.
The specific process is as follows:
1. First, place the silk-screened or offset-printed object on the leveling console plate and wait for the drip.
2, according to the amount, take a clean beaker, accurate measurement, the A and B components, according to the ratio of 1:1 mixing and mixing, some of the crystal glue according to the ratio of 2:1 ingredients, and then remove the mixed rubber Bubbles, there are two commonly used foaming methods: one for the natural defoaming, in the container for 15-30 minutes; the other vacuum defoaming for 3-5 minutes. Note: Under the condition of low temperature, the crystal can be heated to 40°C-50°C; the viscosity of the colloid can be reduced, and bubbles can easily float out.
3, take a clean needle in the needle, the defoaming of crystal glue into the needle tube, and then measure and evenly drip on the surface of signs, trademarks, etc., the general thickness of the gel layer 2mm, so that it can naturally level.
4. After 3-5 minutes after injecting the crystal glue, observe whether there are bubbles or dust particles on the plastic surface. If there are small bubbles, use a small needle to pick it off. If you find that the dead angle is not leveling the crystal glue, use a needle to extradite can.
5, cast a good sign, in the room temperature curing 20 °C -22 °C 10-14 hours hardening, become the surface does not touch the crystal sign.
6, in case of stickers, trademarks, etc., its thickness is very thin, the boundary is not obvious, pouring, it will easily lead to the overflow of crystal glue, to achieve 2mm thickness there are some difficulties, so the system of crystal glue to grasp the different situations, control the viscosity, In the application process, it can be placed for 1-2 hours to increase the viscosity and adapt to the casting of thin crystal glue.
7, the production of more than 2mm thick crystal glue sign, can be divided into two drops, after the first drop, curing 3-5 hours, then add a layer.
8, after the plastic drop cleaning, whether manual drop, or automatic drop, after the completion of the machinery, equipment, containers need to be cleaned, if the glue is hardened, insoluble in any solvent, so it must be in the machine before it is not hardened Both containers need to be cleaned. Crystal glue production of good visual products, high transparency, high gloss, silk screen industry should be widely used.

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