More than the number of pad printing silicone glue printing

 Pad printing is mainly used for plastic toys, electroplating products, electronic toys, trademarks, communications equipment, gifts and stationery; printing and other irregular pattern Pad is the pattern through plastic head on a steel plate as carrier, then pattern transfer plate on the toy products, plastic printing quality requirements fine, no impurities, good resilience, oil well, a clear pattern printing. First, the printing of plastic production methods: 1, first clean mold cleaning with detergent, then dry water mold, and coated with a release agent. 2, the first printing of plastic, silicone normal ratio is based on customer requirements and given large printed patterns if the customer area, need soft head, the more increase in silicone oil. Instead, you need to pad hardness, and do not add add less oil, hardness is generally to Pad 15A ~ -25A ° to the right, if you add excessive silicone, plastic head is too soft, the number of printing was limited and even the best quality silicone will be undermined its molecular weight silicone oil, and produce no wear, no solvent and aging. 3 describes the normal proportion is as follows: 100 g of silica gel was added 30 g of silicone oil, plastic head hardness 20A °, adapt alloy car Aberdeen and pattern printing small contact area is relatively small products. Such as the need to pressure the contact surface or need soft head, the proportion of silica gel and silicone oil can be 100: 30,100: 50 range, but note that the greater the amount of silicone oil added, the softer the rubber head, the number pad of , abrasion resistance and solvent resistance will reduce and minimize the number pad products will be reduced, resulting in increased costs, wasted materials. 4, the chemical reaction of the curing agent and the addition amount ratio of silica gel are as follows: Take 100 g of silica gel, 50 g of silicone oil, followed by mixing with stirring until the silicone oil and silicone stir evenly, then 2% of the total weight of silica and silicone oil - 3% add hardener, then stir 2-3 minutes, you can be evacuated. Evacuation time is generally not more than 10 minutes, taking too much time, colloidal quickly cured, it will affect the quality of inverted plastic. Second, the first printing of plastic advantages: Pad printing quality raw materials, adding new material DuPont Teflon high temperature, high temperature processing, are resistant, high temperature, good printing effect and so on. Third, the printing of plastic materials: Model Color Viscosity Hardness Tensile Strength Elongation Tear strength curing agent ratio operation time curing time (cps) (Shore Ao) (kgf / cm2) (kgf / cm) (% ) (%) (h) (h) 901 # red, yellow, white and green 28000 ± 2000 23 ± 2 35 ± 3 22 ± 3 ≥350 2-3 0.5 2-4 902 # red, yellow, white and green 29000 ± 2000 23 ± 2 33 ± 3 20 ± 3 ≥400 2-3 0.5 2-4 912 # red, yellow, white and green 29000 ± 1000 28 ± 2 43 ± 3 23 ± 2 ≥380 2-3 0.5 2-4 916 # White 36000 ± 2000 13 ± 3 38 ± 2 27 ± 2 ≥420 2-3 0.5 2-4 918 # red, yellow, white and green 24000 ± 3000 28 ± 2 40 ± 3 21 ± 2 ≥380 2-3 0.5 2-4 928 # Red 22000 ± 1000 28 ± 2 43 ± 2 27 ± 2 ≥420 9: 1 2 4-8 four, Pad often arise 1. Durable silicone printing head is not the reason. ① Pad itself is no problem. The problem is when the silica filter does not filter well, there are impurities; or packaging process, artificial when dispensing, do not scrub clean bucket or plastic bag, causing the printing head is not durable silicone. ② with silicone added to the amount of silicone oil has a lot more to add the amount of silicone oil, the hardness of the softer plastic head, because silicone oil will destroy the components of silicone and produce durable, easy to aging and other conditions. ③ silicone application vendors, but not the performance of silica gel, silica gel pad with the use of life is closely related to the size of the pattern to be printed. Many of the plant supervisor trouble, according to the pattern size reluctant to replace plastic head. If you are printing a large pattern, be sure to use a large plastic head, if the pattern of small print, you can use a small plastic head (pattern size is reasonable to adjust the ratio of plastic head size, plastic head size and pattern of three according to: 1). 2. printing silicone head during printing pattern is not clear why the pattern is not complete? ① plastic head perfect time there will be a printed pattern is not complete, because the design patterns big small, plastic head too hard. Plastic head does not have to ink stencil pattern on the adsorption of plastic head above the printed pattern is not complete so if your little pattern fine pattern, be sure to use a soft plastic head printing, so you can solve the problem. ② If the ink moisture content is too high, the pattern will be printed incomplete spots, it is recommended to clean the oil cup, replacement ink or water that day. 3. Pad Why not oil? Any plastic head or glue are oiled, if the customer printing a large pattern, and the word Hugh thick, will be oil, oil is not a small English alphabet, because their hardness or plastic head is too big, no steel version Under ink absorption in plastic head, so just thought it was not oil. 4. Why do not fall Pad oil? No paint sprayed plastic toys or products, ten products in the printing process, there are two on the pattern is not complete, that is, do not drop the oil, is a normal phenomenon. Since the injection molding machine in the production of toys in the process, each producing more than a dozen products to the steel surface will spray release agents, mold release agents just sprayed the first product or second surface of the product has a lot release agent Cunsheng If this product has not been the day that water or wash water cleaning, printing directly used, will be out this phenomenon. 5. Why you want to add silicone pad silicone? Because in making silicone rubber printing head during the printing products in the mobile client, when the pattern size requirements change frequently, the size of the dispensing head hardness also often change, the purpose of the silicone oil, the silicone oil is the viscosity of the silicone release play wash and changes in hardness with plastic head. Fifth, Packing: A: 20kg200kg B: 20kg200kg six, storage and transportation: * storage period: 12 months (sealed, cool and dry place); ? These products are non-dangerous goods, according to general chemical transport.