The surface roughness and matte effect of office supplies matte laminating film are closely linked. In-depth exploration of the quantitative relationship between the two is of great significance for optimizing product performance.
First of all, surface roughness is a key indicator to measure the microscopic unevenness of the membrane surface, which is usually characterized by parameters such as Ra (arithmetic mean roughness). In matte laminated films, when the surface roughness is low, the reflection of light on the film surface is more regular, showing a relatively bright luster. As the roughness increases, the reflection of light gradually becomes dispersed and disordered. . This is because a rough surface scatters light in different directions, reducing the specular component and thereby enhancing the matte effect.
Experimental research shows that by measuring the surface roughness of different samples with precision instruments such as atomic force microscopes, and using a gloss meter to measure the corresponding matte effect (gloss value), it can be found that there is an obvious negative correlation between the two. For example, when the surface roughness Ra increases from 0.1μm to 0.5μm, the gloss value may decrease from 60GU to around 20GU, which means that the degree of matteness increases significantly.
Further analysis of the principle shows that the micro-protrusions and depressions on the rough surface will cause the light to undergo multiple reflections and refractions on the film surface, consuming the energy of the light and reducing the intensity and directionality of the reflected light. Moreover, the uniformity of the roughness distribution will also affect the consistency of the matte effect. If the roughness distribution is uneven, it may cause local gloss differences and affect the overall appearance quality of the product.
In actual production, by adjusting lamination process parameters, such as pressure, temperature and speed, the degree of fit between the film material and the mold surface can be controlled, thereby affecting the surface roughness. Higher pressure and temperature may allow the film to better replicate the microscopic texture of the mold surface, increasing roughness and thus improving the matte effect, but precise control is needed to avoid over-processing that could degrade the film's performance.
In addition, the choice of materials and the use of additives also play a role in surface roughness and matte effect. Different resin base materials have different fluidity and molding properties, which will affect the surface morphology of the membrane material during the molding process. Adding specific matte agents or fillers can adjust the surface roughness to a certain extent and optimize the matte effect.
There is a clear quantitative relationship between the surface roughness of office supplies matte laminating film and the matte effect. By accurately controlling the surface roughness, combined with appropriate materials and processes, laminate film products with ideal matte effects can be produced to meet the needs of office supplies. requirements for appearance and practicality, while providing strong technical support for product quality improvement and innovation.
