Waterborne polyurethane fabric coating agent can give the fabric a good soft and plump feel and skin feeling, and the anti-wrinkle, anti-shrinkage, resilience and flexure of the coated fabric have been greatly improved, waterproof waterproof polyurethane fabric coating agent has become the fabric manufacturers and consumers favored object.So how does waterborne polyurethane work as a waterproofing agent in fabrics. Waterborne polyurethane can bond tightly to the surface of the fabric and form a continuous and dense film, which is the key to realize its waterproof performance. The tighter the waterborne polyurethane membrane, the less water molecules are easy to penetrate, and the tighter the waterborne polyurethane and fabric bonding, the more water resistant and not easy to fall off.The adhesion between waterborne polyurethane and fabric is mainly related to the polar groups contained in the structure, such as ammonia ester bond, urea bond, ion bond, etc. There are coulomb force, van der Waals attraction and hydrogen bond between them and fabric surface.The ideal bonding state is that the adhesion between waterborne polyurethane and fabric is greater than the cohesion of fabric, but less than the cohesion between waterborne polyurethane.The density of film formation is related to the cohesive energy of waterborne polyurethane molecules. The greater the cohesive energy is, the smaller the distance between molecules is, the more compact the structure is, and the more dense the film formation is At the same time, in order to maximize the degree of waterproof, the surface tension of waterborne polyurethane film is reduced as much as possible, so that the contact Angle between water droplets and waterborne polyurethane film increases, water droplets are not easy to spread out on the surface of waterborne polyurethane, thus reducing the infiltration effect of water droplets on waterborne polyurethane coating agent. Sinograce Chemical, specializing in the production of waterborne polyurethane series products for many years, non-toxic environmental protection we have a professional team, with a professional attitude, to solve the problems in practical application for you if you are interested in our waterborne polyurethane products or have doubts, Sinograce Chemical chemical welcome you to consult, this is our email sales@sinogracechem.com

After toning water-based plastic composite ink is used, there is often error with the standard color, which is difficult to completely avoid the problem, can only be reduced to a low limit. Different printing ink factory use of the same part of the printing machine, different printing machine mesh mesh line number Angle has a big difference, which makes the same ink, in different printing methods have a big difference, sometimes not only the problem of dark color, but the color lightness will bring a big difference in the effect.The effect is much better than that of a printer. This type of printer can produce the same plate as a printing plant, and can design different levels of printing patterns according to the needs, which makes the printing method basically the same as that of a printing plant. Different printing pieces have different depth, ink factory for printing pieces used depth of understanding or estimate also affects the accuracy of toning some people think that are according to the standard ink provided by the user to adjust the water-based plastic composite ink, the depth can not be considered, but in practice it is not the case.Theoretically speaking, the two inks are exactly the same, whether the plate is deep Shallow (other conditions are the same) its hue is consistent, but in the actual color, cannot allocate to draw the same ink, so often there is such a phenomenon, sometimes printed version of shallow color closer to (can meet customer requirements), but if deep version, the color is much worse, so it is very important to grasp of the version of the deep, the customer's version of how deep, it must be used Dark plates for color matching. We are a supplier of water-based ink resins. This is our email sales@sinogracechem.com, welcome to consult.

With the continuous enhancement of human awareness of environmental protection, environmental laws and regulations are constantly introduced and improved all industries are working together in the direction of environmental protection, green and health.With the development of flexible packaging industry, it has become an inevitable trend to reduce and remove organic solvents used in compounding.Water-based composite adhesive in the use of methods and price technology is gradually mature, become the new darling of the soft bag industry, has achieved rapid development inside and outside. In the plastic composite and plastic aluminum composite, mainly with water-based polyurethane and water-based acrylic polymer water-based adhesive mainly has the following advantages. the composite strength of water-based adhesive molecular weight is large, is dozens of times of polyurethane adhesive, its adhesion is mainly by van der Waals force, belongs to physical adsorption, so a small amount of glue can achieve quite high composite strength soft, more suitable for aluminum film composite One-component softer than the two-component polyurethane adhesive, water-based adhesive when they completely after solidification, very rigid polyurethane adhesive, water-based adhesive is very soft So soft properties of water-based adhesive and composite elastic is more suitable for aluminized film, not easily lead to aluminum plating film transfer. do not need to cure, cutting and after off the plane.Single component water-based adhesive compound does not need to be cooked, after the machine can be cut bag and other subsequent processes.This is due to the initial adhesive strength of water-based adhesive, especially the high shear strength, to ensure that the product will not produce tunnel folds and other problems in the process of composite and cutting.Moreover, the strength of the film composite with water-based adhesive can improve by 50% after 4 hours. Here is not the concept of curing, the colloid itself does not occur cross-linking, mainly with the leveling of the glue, the composite strength also improves. rubber thin, good transparency Less as a result of water-based adhesive glue, and glue concentration higher than that of solvent adhesive, so need drying and discharge water also far less than water completely after drying, solvent adhesive film will become very transparent, due to the sub is thinner, so the transparency of composite is also better than solvent-based adhesive environmental protection, harmless to people.There is no residual solvent after drying of water-based adhesive. Many manufacturers use water-based adhesive to avoid residual solvent brought by composite, so the use of water-based adhesive production is safe, and there is no damage to the health of operating staff. With the increasing application of composite flexible packaging materials, water-based composite adhesive is not only used in the packaging of food and drugs, but also used in the pa...

Water-based ink resin is suitable for intaglio printing ink. The ink coating prepared with this product has good film forming ability, quick drying, high gloss, high hardness and scratch resistance, good film forming ability on the surface of paper foil and good compatibility with water-based pigment. Application characteristics 1 Good film formation 2 Suitable for a variety of substrates, good adhesion 3 fast drying speed, no peculiar smell after the ink layer film 4 good wettability of pigment, good leveling 5 good resolubility, good fatigue resistance, long-term printing without blocking and stable ink performance In order to ensure the quality of water-based ink resin products, the products should be placed in the shade, avoid heat and humidity, and keep the packaging sealed after each use to avoid pollution. This is our email sales@sinogracechem.com, welcome to consult.