What is the average coating amount of adhesive? What is the influence of coating amount on the properties and processing of non adhesive materials?
The adhesive is between. Adhesive label materials and bonded to the substrate medium side.this. According to their characteristics can be divided into permanent and can be removed in two, a variety of formulations, suitable for different fabrics and different occasions. The bond is the most important component of sensitive materials and technology, is the key to apply technology.
Coat. As with the surface coating, but is coated on the back of the material, the main purpose is as follows: A. protective coating layer surface material, to prevent the penetration of the adhesive for low density materials. Porous material, thin coating layer commonly used procedures, is to add a protective layer on the adhesive, figure 2 l adhesive materials structure prevent opacity adhesive material into.B. increased fabric. Usually coated black, the purpose is to prevent the labeling tag below, color words through surface material. Special labels, such as modifying the information of office supplies in the ghost in the supermarket with increase the bond strength with adhesive between the surface materials in the original price the label surface new price tag..c is mainly used for removable adhesive, prevent the label from the surface to remove the adhesive from the commodity material off the residual in the commodity surface. Such as eye lens labels, microwave oven door The labels such as.D. prevent the plasticizer in the plastic surface from penetrating into the adhesive, affecting adhesive properties, resulting in reduced adhesive force of labels and off label. Used mainly for materials
The structure of adhesive materials on the surface is composed of three parts, namely, surface materials, adhesives and the end of the paper, but from the manufacturing process and quality assurance point of view, the adhesive material is composed of seven parts, as shown in Figure 2 - L. The surface of coating. The purpose is to change the surface properties of material. Such as the improvement of surface tension, change color, add protection layer, make it better to accept ink and easy to print, to prevent dirt, increase the ink adhesion and prevent printing off. Surface coating is mainly used for non absorbent material, such as aluminum foil, aluminum paper and various film materials. General paper materials without coating. But the special fabrics such as thermal paper, thermal transfer paper for surface coating.
From the type of coating (coated silicon layer). In the end of paper surface coated with silicone oil. The base paper coated with silicone oil as a surface tension is very low, the surface is very smooth, the role is to prevent the adhesive on the base paper. Includes solvent release agent coated and non solvent coating two. At the end of the paper. At the end of the paper the role is, accept release agent, protective coating material on the back of the adhesive, the support surfaces, which can die-cutting, exhaust and the labeling machine labeling. According to different purposes have different materials. The back coating base paper or printing (mark the end). The coating is in the back special cases or special products, on the back of a protective coating at the end of the paper, the application of the products of large amount of adhesive coating and adhesive with good fluidity, to prevent exhaust, binder around after rewinding label the end of the paper, resulting in a label with the bottom paper adhesion, can not use the back coating. Another role is to manufacture multi-layer labels, but also painted silicon, but also glue, depending on the label structure. The role of back printing is in the bottom of the paper printed on the back of the manufacturer's registered trademarks or patterns, play the role of publicity and security
