What is the difference between external light knife scraping cloth and internal light knife scraping cloth

The knife scraping cloth is a chemical synthetic material, and the thickness is thicker than the ordinary lamp cloth. The front of the scraper cloth is flexible and smooth, the back is rough, and the granularity is thick and uneven. Knife scraping cloth is divided into high-gloss surface and matte surface, mainly because of the different scope of application. It is suitable to use the inner light knife to scrape the cloth indoors, and the external light knife can be used to scrape the cloth indoors and outdoors. In addition, the inner light knife squeegee is also called a net-free knife squeegee, which has good light transmittance, and the outer light knife squeegee is opaque. This is an obvious difference between the two, and the effect is very significant when distinguishing the two. At the same time, whether it is an external light knife scraping cloth or an internal light knife scraping cloth, it has the following finished product characteristics: (1) High strength, good ductility, and strong flexibility. This unique property makes this material widely used in the large-format, high-end fine commodity market. (2) The surface is smooth and has strong ink absorption. The chemical properties of the material determine that it has strong ink adsorption, and can adhere with high strength under oily or water-based ink conditions. (3) Stable physical and chemical properties, mainly in anti-oxidation, acid and alkali resistance and severe cold resistance. It is precisely because of the above characteristics that knife scraping cloth is generally used in coating canopies, light boxes, background boards, and wide-format advertising paintings in public places. It is very suitable for use in the outdoor advertising industry.