High temperature protective film application range and coating performance is the key to production

Application range of high temperature protective film.

1, electrochemical aluminum hot stamping (hot stamping), electrochemical aluminum hot stamping is a special printing process that does not use ink, with a certain pressure and temperature, applied to the stencil installed on the hot stamping machine, so that the printed matter and hot stamping foil in a short time under mutual pressure, the electrode free uv power metal foil or pigment according to the graphic and text of the hot stamping stencil transfer to the surface of the product, commonly known as hot stamping, here, Plastic film (hot stamping film) only as a carrier.

2, printing composite film, in order to enhance the packaging effect and barrier performance, to achieve complementary performance and meet the needs of sealing, often use paint spray gun printing composite film as a packaging material, composite methods include dry composite, wet composite, extrusion composite, co-extrusion composite, etc.

3, vacuum aluminum plating film, vacuum aluminum plating film is made of a very thin layer of metal aluminum evaporation on the surface of high-temperature PET protective film by a special process, so that the surface of the film has a metallic luster, and greatly improve its barrier property, therefore, vacuum aluminum plating film has been widely used in food, medicine, industrial product packaging.

4, the protection film, the protection film with high temperature PET protective film as the substrate, on the extrusion coating of a layer of heat sealable hot melt adhesive (such as EVA), used for a variety of documents including ID cards, documents, files, photos and other surface protection.

In the packaging industry, there is a special protective material called surface protective film, put it on all kinds of metal plates, plastic plates, glass and other surfaces, in transportation, processing, storage and use, the fine surface of the item to protect, which requires excellent performance of pressure sensitive protective glue/acrylic glue /PU glue.

The viscosity and other rheological properties of the adhesive are the most important properties affecting the coating behavior of the surface protective film. According to the dependence of the viscosity on the shear speed, the fluid can be distinguished into three kinds: Newton fluid, expansion body and pseudoplastic body. According to the change of the shear time of the viscosity, the fluid can be divided into Newton fluid, contact variant and flow variant. In the coating operation, the more prone to various quality problems.

The key to the production of surface protective film is to select the appropriate coating method and coating machine according to the coating performance and the specific requirements of the protective film, and to determine the various process parameters of the coating machine operation.