Signs of the production process high-grade crystal introduced
Now decoration, manufacturing and other signs used in crystal plastic drop. Such as crafts, badges, nail scissors, car panels, trademarks, caps and other products, in order to gradually tends to arts and crafts, three-dimensional, upgrading can enhance the competitiveness of various products.
Crystal Plastic label production must use UV-crystal drop models rubber sign (PU glue). It is a modern surface decoration materials, major components of aliphatic polyisocyanates, polyether polyols and related types of catalyst, after curing UV soft elastic Shui Jingjiao. Applicable to various substrates.
Such as: PVC, metal badges, coins paper and printed with color patterns of trade marks, signs, acrylic, etc..
Shall have the following properties of high-grade PU Shui Jingjiao: good elasticity, long-term non-Qi Qiao, ripple-free, anti-UV, non-yellowing (the sun at least 5 years), strength, cure speed adjustable, adjustable hardness:
1. Mechanical Epoxy 0.5 hour gel, 8-hour collection rubber;
2. 0.5 hours using the manual time, 2 hours gel, 24-hour collection glue
Currently high-grade PU adhesive label manufacturer only Wuxi Hui Lee (WELLS) company, a foreign company in France SYTHESIA, Italy COLORDEC companies, by contrast, the PU Shui Jingjiao Wuxi Whaley performance quality products more than their foreign counterparts.
Such as: hardness index, foreign hardness SHORE-A: 90 (no change) that can not be colder places in the north, and Wuxi Hui Lee (WELLS) There are two kinds of hardness, SHORE-A: 90,70 2 species, SHORE-A: 70 minus 10 degrees hardness condition is still flexible. Another anti-purple line, the Wuxi Hui Lee (WELLS) products are better than their foreign counterparts, proved, Wuxi Hui Lee (WELLS) PU glue after 60W, 40CM, 253.7 nm, the strongest ultraviolet light disinfection strong destructive under the action of the PU adhesive Wuxi Whaley no yellowing after 24 hours, but within 2 hours of foreign products have been yellowing, of course, PU products overseas under the sun 2 to 3 years is not yellow change.
Because solar UV wavelengths longer than 300 nm. And foreign products is only applicable to mechanical automatic Epoxy, because its products can be used for only 10 to 15 minutes, does not apply to manual production.
Here in Wuxi Whaley (WELLS) 4030A / B UV-crystal drop models rubber sign an example production process outlined below:
First, manual processes are as follows:
1. First prepared various types of substrates, such as: PVC, plastic trademarks, metal badge into the preheating oven 60 degrees, aim to remove surface moisture.
2. After the dehumidification level of the substrate flat on the drip line of the console panel to wait.
3. According to usage, take a clean beaker, accurate measurement, the B component, according to the weight ratio of 2:1 mixing evenly (be sure to mix well, or it will stick hand and with the substrate surface, the phenomenon of delamination, the the same product manufacturers to do this.) (Note: The proportion of manufacturers vary, depending on the actual case may be).
4. Then with a good mixture into a vacuum oven, open the real pump, removal in a vacuum bubble mixture. Get clean in the needle, the defoaming inhalation after bbs.wescn.com Shui Jingjiao needle tube, and then to measure, and drip evenly in prepared substrate (ie: signs, trademarks, etc.) of the surface, the general crystal layer thickness of 2mm, you can let the natural flow level (Note: The above process control in 30 minutes, so as not to glue viscosity increase, resulting in no operation).
5. Substrate for 3-5 minutes after the infusion Shui Jingjiao to observe whether the plastic surface bubbles or dust particles, if small bubbles, can pin to pierce, as there is no flow Shui Jingjiao found dead to the place, with a pin extradition can.
6. Pouring a good sign, at 20 ℃ -30 ℃ for 10-24 hours of curing at room temperature hardening, a surface left the crystal plate.
7. Case of self-adhesive, trademarks, etc., its thickness is thin, the line is not obvious casting, the easily lead Shui Jingjiao spillover to 2mm thickness is difficult to achieve, so the system Shuijing Jiao grasp different circumstances, good viscosity control, in application process, you can put 1-2 hours, to increase the viscosity of thin Shui Jingjiao meet the cast.
8. Production of more than 2mm thick Shui Jingjiao signs, separable second drop models, the first drop models, the cure 3-5 hours, then dropping a layer.
9. Dripping after cleaning, whether hand-drop models, or automated plastic drop, after the completion of the machinery, equipment, containers are required to clean, because Shuijing Jiao after hardening, without any solvent, so it does not need to harden before the machine, Vessels are required to clean (suggestion: use acetone or absolute alcohol).
Second, mechanical Epoxy operating process is as follows:
1. First prepared various types of substrates, such as: PVC, plastic trademarks, metal badge into the preheating oven 60 degrees, aim to remove surface moisture.
2. After the dehumidification level of the substrate flat on the drip line of the console panel to wait.
3. Epoxy machine will Shui Jingjiao were two vacuum suction storage tank, according to Shui Jingjiao proportion reckon Shui Jingjiao volume ratio, and set a good dripping machine traffic. (Note: volume ratio and weight ratio is different, because A, B may vary the proportion of plastic).
4. Maintain the A, B respectively in plastic vacuum, open the dripping machine will be A, B glue into the mixing tank, vacuum mixing.
5. Will be pre-prepared substrate (ie: signs, trademarks, etc.) placed under the emitter automatically Epoxy. General crystal layer thickness of 2mm, you can let the natural flow level (Note: The above process control in 10 minutes, so as not to glue viscosity, resulted in the operation of PU machinery Epoxy glue gel time than manual 30 minutes is usually shorter gel, hand gel 2 hours).
5. Substrate in 3-5 minutes after infusion of Shuijing Jiao, observing whether the bubbles or dust particles, plastic surfaces, where small bubbles, can be used to puncture pin, found dead with no flow Shui Jingjiao to place, with a pin extradition can.
6. Pouring a good sign, at 20 ℃ -30 ℃ cured 8 hours at room temperature hardening, a surface left the crystal plate.
7. In case of self-adhesive, trademarks, etc., its thickness is thin, the line is not obvious, when casting, making it easy Shui Jingjiao spillover, 2mm thickness to achieve it will be difficult to grasp why the system Shui Jingjiao of different situations, good control of viscosity, in application process, you can put 1-2 hours in order to increase the viscosity of thin Shui Jingjiao meet the cast.
8. Production of more than 2mm thick Shui Jingjiao signs, separable second drop models, the first drop models, the cure 3-5 hours, then dropping a layer.
9. Dripping after cleaning, whether hand-drop models, or automated plastic drop, after the completion of the machinery, equipment, containers are required to clean, because Shuijing Jiao after hardening, without any solvent, so it does not need to harden before the machine, Vessels are required to clean (suggestion: use acetone or absolute alcohol).
| Updated:2010.06.23 Source: Clicks:4329
