Different processing methods will cause different fault manifestations, the following we mainly analyze the causes of paper thermit sealing delamination phenomenon under the gravure and solvent-free composite processing methods. The YBB paper aluminum-plastic composite film standard does not specify the composite strength index of the paper aluminum layer in the paper aluminum-plastic composite film, usually we peel the paper layer apart, observe the transfer of paper fibers, if there is a layer of paper fibers left on the aluminum foil surface, it indicates that the composite strength is good at room temperature. Paper aluminum delamination has many manifestations and different mechanisms. When paper aluminum plastic heat sealing, due to the poor heat transfer of paper, it is necessary to set a higher heat sealing temperature, and sometimes the heat is as high as 200℃, which is a greater test for the heat resistance of the rubber layer. In addition, under the action of heat above 200℃, the paper will lose water and produce a certain shrinkage stress, which will aggravate the phenomenon of thermal seal delamination. The YBB paper aluminum-plastic composite film standard does not specify the composite strength index of the paper aluminum layer in the paper aluminum-plastic composite film, usually we peel the paper layer apart, observe the transfer of paper fibers, if there is a layer of paper fibers left on the aluminum foil surface, it indicates that the composite strength is good at room temperature. Paper aluminum delamination has many manifestations and different mechanisms. When paper aluminum plastic heat sealing, due to the poor heat transfer of paper, it is necessary to set a higher heat sealing temperature, and sometimes the heat is as high as 200℃, which is a greater test for the heat resistance of the rubber layer. In addition, under the action of heat above 200℃, the paper will lose water and produce a certain shrinkage stress, which will aggravate the phenomenon of thermal seal delamination. Delamination only appeared in the heat sealing part, and the strength of the parts without heat sealing was good The heat of the hot sealing knife leads to the deterioration of the bonding fastness, which is generally separated from the internal delamination of the adhesive layer, which can be analyzed with PU dyeing agent. Main factor: the heat resistance of the adhesive itself is not enough. Countermeasure: The appropriate adhesive type number should be selected. The crosslinking curing of adhesives is inadequate. Reason: the curing temperature time is not enough, the free water in the paper is too little. Countermeasure: Prolong the curing time and humidify the paper properly. The composite strength of the heat-sealed part and the non-heat-sealed part is poor The amount of glue layer left between the paper surface and the aluminum foil interface is too small Possible factors: The paper absorbency is too strong, the coating amount is low. Counte...

Leather surface treatment agent Matte resin is a surface treatment agent, mainly used to add a matte effect to the leather surface. The principle is to form a layer of tiny particles on the surface of the leather material, and the refracted light is dispersed, making the surface appear matte. Automotive interior leather market demand analysis As a high-grade and beautiful material, leather has a wide range of uses, but the animal fur that can be used for leather production is limited, which is mainly due to people's protection policies for animals. The production of leather is far from meeting the needs of people. In the context of such characteristics of The Times, artificial leather came into being, artificial leather is also called PU leather (polyurethane synthetic leather), is coated on the fabric PU resin processing. The main features are comfortable feel close to leather, large mechanical strength, many colors, a wide range of applications; Therefore, the frequency of use in the automotive interior industry is very high. In the context of such characteristics of The Times, artificial leather came into being, artificial leather is also called PU leather (polyurethane synthetic leather), is coated on the fabric PU resin processing. The main features are comfortable feel close to leather, large mechanical strength, many colors, a wide range of applications; Therefore, the frequency of use in the automotive interior industry is very high. Leather surface treatment agent matte resin product recommendation Matte coating resins have developed rapidly in many fields. Automobile interior leather matte coating resin, suitable for high-end car seats, instrument panels, steering wheels, ceiling, door armrests, etc. Sinograce Chemical's leather polyurethane matte resin has excellent performance

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

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...