• How does resin produce crack effect
    How does resin produce crack effect

    2024-04-26

    First, material selection and preparation To make the resin crack effect, you first need to prepare the resin and pigment. Resin selection of high transparency, high hardness, wear resistance products, pigments can choose mineral pigments or metal pigments, you can also add a small amount of color pigments to prepare a rich color. Second, color mixing Mix the paint into the resin one by one and stir well. Be careful not to add too much pigment, otherwise it will affect the transparency and gloss of the resin. It is best to use a slow stirring speed to avoid excessive foaming. Third, construction modeling Apply the color-adjusted resin evenly to the fabrication panel. When the surface is not dry, you can use a plastic knife or other sharp tool to characterize the shape and direction of the crack on the resin to achieve a more realistic effect. Be careful not to paint too deeply, otherwise it will destroy the overall structure of the resin. Fourthly,Wait for drying After the construction is completed, the resin on the surface needs to be left for a period of time until it is no longer sticky on the surface. Resin drying speed will be affected by the ambient temperature and humidity, generally need to wait for about 24 hours to dry thoroughly. Fifth,Grinding and coating After the resin is completely dry, the surface can be polished more smoothly using a sander, and a layer of protective paint can be applied to the resin surface to increase the luster and hardness of the resin work. The above is the basic steps and skills of making resin crack effect, through different pigment matching and creation methods, you can also make more colorful resin works. If you also like to create and make decorations by hand, try creating resin crack effects to add more fun to your life. Sinograce Chemical provides a variety of water-based resins, acrylic resins, water-based polyurethane, welcome to consult. If you need samples, you can leave a message on the website to apply, and the relevant staff will contact you as soon as possible or call the official hotline: +86 0551 63459511

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  • What are the ten reasons why the ink is not clean
    What are the ten reasons why the ink is not clean

    2024-04-24

    Ink scraping is not clean troubled many manufacturers, there are ten reasons for scraping is not clean, save it for use! 1.Ink viscosity is too high When the viscosity of the ink increases, the surface tension also increases correspondingly, and the force between them also increases, so that the scraper will increase the impact force of the ink on the scraper in the contact process with the ink, destroy the balance point, resulting in the scraper can not completely scrape the remaining part of the ink on the plate roller, which directly affects the quality of the product. 2.The pressure of the scraper is too small Under normal circumstances, when the machine is just started, the pressure of the scraper is often set very small, with the increase of the machine speed, the impact of the printing ink on the plate roller on the scraper will increase with the increase of the machine speed, destroying the original balance point, directly resulting in unclean scraping. 3.Ink into the water or use time is too long After the ink is used for a long time, on the one hand, the pigment in the ink will be precipitated continuously during the long cycle process, so that the composition of the ink will change, on the other hand, the water vapor in the air will be solidified due to the volatilization of the solvent and enter the ink, and the composition of the ink will also change. Thus, the overall performance of the ink is changed, the scraping performance of the ink is greatly reduced, and the scraping difficulty of the scraper is directly increased, resulting in unclean scraping. 4.The solvent dries too fast or slowly Mixing solvent too fast dry, in addition to the ink viscosity in a short time to improve, but also make the ink adhere to the spare part of the plate roller, due to the solvent volatilization too fast, adhere to the plate roller ink will be gelatinized, in the plate roller through the scraper, due to the high adhesive force of the gelatinized ink, the scraper can not be in the plate roller running for a week to scrape it off, thus directly to the printing substrate. Resulting in unclean scraping. The solvent itself is volatilized very slowly, causing the remaining part of the ink over the plate roller to not dry on the surface of the plate roller in time, and its state is similar to that of the dot part of the ink, so that when the printing substrate passes through the plate roller, the remaining part of the ink over the plate roller can be easily transferred to the printing substrate, resulting in the generation of dirty scraping. 5.The use of roller is too long Due to long-term use, the surface of the plate roller will be worn due to the force of the scraper, and the surface will become more and more smooth, resulting in the affinity between the ink and the plate roller becoming stronger and stronger, directly increasing the difficulty of scraping the scraper, resulting in unclean scraping. 6.The scraper assembly is too soft, the Angle is too p...

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  • Why do small bubbles appear in the composite film?
    Why do small bubbles appear in the composite film?

    2024-04-19

    "If there are small bubbles in the complex, opaque and foggy, it will not only affect the appearance quality, but also affect the peeling strength of the complex, reducing it, which is a very bad phenomenon." 1.The surface tension of the base film is too small, the infiltration is poor, the glue is not uniform, and the space without glue is empty and bubbles are generated. The solution is to use a film with a surface tension greater than 38mN/m, or re-corona treatment, or online corona treatment, qualified for reuse. 2.The pressure of the composite roller is insufficient, or the surface temperature of the composite steel roller is too low, the activation of the adhesive is insufficient, the fluidity is insufficient, the micelles of the same dot are uneven, and there are small gaps, resulting in very small bubbles. At this time, the surface temperature of the composite steel roller should be increased, and the pressure should be increased. It is best to smooth the rubber particles with an inverted rubber roller before applying the adhesive base film into the baking channel. 3.The Angle between the composite roll and the film is not appropriate, the envelope Angle is too large, especially for rigid materials, easy to cause folds and even bubbles. The Angle should be carefully adjusted, the wrapping Angle should be changed, and the composite roller should be entered as far as possible according to the tangential direction. 4.There is dust attached to the surface of the film, the dust particles will be two layers of film up, forming a circle around the empty ring is a little bit of air bubble, look carefully in the middle of a black spot. If there is such a phenomenon, should pay attention to the environment clean, keep the air fresh. 5.There is a trace of water mixed in the adhesive, and an NCO in the adhesive reacts with water to produce CO2 gas. Therefore, it is necessary to keep dry on solvents and environmental humidity to eliminate the cause of CO2 production. 6, residual solvent, and the permeability of the solvent is poor, the solvent gasification to form bubbles sandwiched between the two layers of film. Therefore, the amount of residual solvent should be controlled, or the base film with a large solvent transmittance should be decompounded. Sinograce Chemical has high quality water-based acrylic film adhesive, welcome to consult and buy

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