LEPF
LEPF - Finishing Performance Testing Laboratory
Sheet Grid Adhesion
The test consists of classifying the adhesion of layers to each other (paints, varnishes, etc.) or between layers and substrates, using a grid made by incisions, then peeling, with adhesive tape applied to their surface.
Appearance, film tension
The purpose of the test is to check the surface appearance by visual inspection under standardized lighting and viewing conditions.
Brilliance
The purpose of the test is to determine the gloss of a flat surface of coated substrate at angles of 20°, 60°, and 80°.
Impact resistance on metallic surfaces
This test aims to determine the impact resistance of a coating layer applied on a metallic substrate by studying the deformation resulting from the fall of a steel mass onto a coated sample.
Testing the behavior of face and edge bonding under climatic variations
This test aims to verify the adhesion performance of surface and edge bonding when exposed to various climatic conditions.
Determination of dimensions (thickness, length, width)
This test aims to measure the length, width and thickness of the tested sample.
Determination of flatness
This test aims to measure the degree of flatness at the point of maximum deformation.
Measurement of dry coating thickness
This test aims to determine the thickness of paint, varnish or lacquer coatings using measuring devices selected according to the type of substrate.
Abrasion resistance (wear)
This test aims to evaluate the behavior of finishes when exposed to friction by determining the onset of surface wear.
Corrosion resistance test
The purpose of the test is to verify the behavior of organic coatings applied to metal substrates when subjected to accelerated corrosion by an artificial salt spray of a defined composition under specific temperature and pressure conditions.
Stress crack resistance
The purpose of this test is to visually determine the resistance to stress cracking.
Light resistance
This test aims to verify the stability of the surface color when exposed to specified artificial light.
The test is carried out in an accelerated aging chamber using XENON light, which artificially reproduces the full solar spectrum and thus simulates the deterioration caused by solar radiation and weathering in an accelerated manner. These customized cyclic tests provide a better understanding of resistance to the solar spectrum.
Scratch resistance
The purpose of this test is to verify the scratch resistance of finishes by visually examining the residual mark caused by a scratching point applied with a given force.
Thermal shock test
The purpose of this test is to verify the behavior of the product (finish, materials, electronic components, etc.) when subjected to sudden climate changes between cold conditions (temperatures as low as -80°C) and hot conditions (temperatures as high as 220°C). The test is carried out in a thermal shock chamber, consisting of two chambers, one for negative temperatures and the other for positive temperatures.
Climatic variation test
Temperature and humidity directly affect the service life of materials and products.
The available climatic chambers allow simulation of hot, cold, or humid environments according to specifications or applicable standards, enabling the study of product behavior (finishes, materials, electronic components, etc.) under different temperature and humidity levels.
Resistance to immersion in boiling water
This test aims to determine the effect of immersing samples for two hours in boiling water.
Resistance to climatic shock
This test aims to determine any visual change in the mechanical properties of samples resulting from exposure to successive cycles of rapid changes in temperature and relative humidity.
Impact resistance using a large-diameter ball
This test aims to determine the impact resistance of layered coatings by studying the deformation resulting from the fall of a mass onto the coated sample.
Impact resistance of a small-diameter ball
This test aims to determine the impact resistance of high-pressure decorative coatings by studying the deformation resulting from the fall of a steel mass onto the coated sample.
Cigarette burn resistance
This test aims to evaluate the surface behavior and possible changes resulting from cigarette burns under specified conditions.
Stain resistance
This test aims to determine the effect of staining agents on the product surface.
Water vapor resistance
This test aims to verify the behavior of layered coatings when exposed to boiling water vapor.
Surface resistance to dry heat inside an oven at 70°C
This test aims to evaluate the behavior of finishes when exposed to dry heat inside an oven through visual inspection.
Surface resistance to dry heat
This test aims to evaluate the behavior of the surface when exposed to dry heat resulting from contact with an object having a defined thermal capacity that gradually cools during contact.
Resistance in humid environments
This test aims to determine the long-term effect of exposing coated samples to humidity.
Color stability under artificial light
This test aims to verify the stability of the surface color when exposed to specified artificial light.
Dimensional stability at room temperature
This test aims to measure lateral dimensional changes of samples resulting from variations in relative humidity at room temperature.
Dimensional stability at high temperatures
This test aims to measure lateral dimensional changes of samples over a wide range of relative humidity and high temperatures.