Protective Film for 8K Mirror Finished Stainless Steel
What is the 8K mirror finished stainless steel?
8K mirror finished stainless steel is also known as the mirror polished stainless steel and mirror steel. Use the polishing liquid to polish on the surface of the stainless steel plate through polishing equipment, so that the surface brightness is as clear as a mirror.
Scope of use is star hotels, shopping malls, wealthy clubs, colorful bars, luxury KTV, luxury decoration such as clothing display cabinets, etc. People mainly use protective films for decorations, such as hall wall panels, ceilings, elevator car panels, car panels, architectural decoration, signboards, and other decorative purposes.
An anti scratch protective film protects the 8K mirror finished stainless steel before transportation and use.
Requirements for the adhesives of the protective film are as follow:
Main problems and reasons for the most protective film products in the market:
1. The PE protective film is not firmly attached to the product to be protected, and it may fall off during transportation and use.
The main possibilities for this problem 1 are:
- The pressure of the laminator during film laminating is low.
- The surface of the substrate is not clean. For example, there is dust or paint, etc., which affects the adhesion of the pressure-sensitive adhesive.
- The adhesion of the pressure-sensitive adhesive used in the production of the protective film is too low.
2. It is difficult to peel off the protective film. After installing the protected products, workers can not peel the protective film off effectively.
3. When protective film is peeled off, the adhesive layer remains on the substrate or "ghosting" appears on the substrate’s surface.
- There are many possibilities for this problem. Mainly because the pressure-sensitive adhesive used for the protective film does not comply with the regulations, which causes the external tension of the film to be greater than the internal stress when it is peeled off, and glue remains on the substrate.
- The small molecules in the pressure sensitive adhesive migrate to the surface of the adhesive layer to form a “ghost”.
Solutions:
Aiming at the above problems, Isaac conducted in-depth research and experiments from the following aspects. Some achievements have been made and a better protective film for 8K mirror finished stainless steel can be provided.
1. Surface Tension
| Material |
Dyne |
| Mercury |
470 |
| Water |
72.7 |
| Ethanol |
22.3 |
| N-butanol |
24.6 |
| 50% Aqueous ethanol |
31.8 |
| 30% Aqueous ethanol |
37.8 |
| Ethyl acetate |
26.3 |
| Toluene |
28.2 |
| Butanone |
26.7 |
In order for the glue to adhere well to the surface of the substrate, the dyne value of the substrate should be 10 dyne higher than the dyne value of all glues.
The protective film of 8K mirror panel is generally PE film, so the Dyne value of the water-based pressure sensitive adhesive used for 8K mirror panel should be in the range of 23-28.
2. Selection of emulsifier
Anionic and nonionic emulsifiers with strong emulsifying ability are used together to obtain a water-based pressure-sensitive adhesive with relatively high wettability, and no gel is produced.
3. Monomer selection
A small amount of special monomer is added to adjust the ratio of various monomers to make it low viscosity, low peeling force and high holding viscosity.
ISAAC's latest achievements.
Based on the special physical properties of the 8K mirror finished stainless steel, Isaac developed a special water-based pressure-sensitive glue, which is coated on the protective film specially for 8K mirror finished stainless steel. The characteristics of this glue are as follow:
Photos of the protective film for 8K mirror finished stainless steel:
