Tutorial Archives - Page 3 of 14 - Robotic Paint Group Ltd

06Sep 2025 by robotic paint

Indepth Understanding of Color Difference Parameters

Tutorial

Color difference is a popular issue in spray painting industry and there're numorous guides how to avoid it. But in actual operation, especially as a paint technician we must know more about the logic and understand techically how to control color difference properly using a formula or device. Let's take the most commonly used ΔE*ab as an example. ΔE*ab is the color difference formula for the Lab color space, established by the CIE (International Commission on Illumination) in 1976. The ΔE formula is as follows: ΔE = √(ΔL² + Δa² + Δb² ) Color can be represented by the three color axes: L, a, and b. When comparing a standard color and a sample color, the differences in L, a, and b values are ΔL, Δa, and Δb, respectively. However,…

01Sep 2025 by robotic paint

Flame Treatment or Annealing Before Plastic Painting

Tutorial

In order to receive the needed surface finishing, plastic products need various pretreatment including cleaning, heating and blasting etc. Flame treatment is a popular solution in many plastic painting lines. However it's not the solely choice according to the exact plastic components. In this article we'll briefly introduce the pros and cons of flame treatment and another solution called annealing. What is Flame Treatment? Flame treatment is a surface treatment technique performed on plastics before painting. It uses flame to briefly heat the plastic surface at high temperatures to improve wettability and adhesion. This treatment effectively removes oil, release agents, and other impurities from the plastic surface, while also increasing the surface's polarity, thereby improving paint adhesion. Principles of Flame Treatment Flame treatment uses a high-temperature flame to transfer energy…

26Aug 2025 by robotic paint

How to Calculate Spray Booth Waste Air Treatment Volume

Tutorial

Spray painting will result in a huge volume of hazards gas, especially for automated painting lines and paint curing furnace which are characterized by high air volume and low concentration. The odor of spray paint contains VOCs such as benzene, toluene, and xylene, which have a significant impact on the surrounding environment. Air volume calculation is a crucial point when programming a gas treatment solution. In actual condition there's a few calculations in order to get the volume Basic Method of Waste Air Volume Calculation Air Volume = Booth Volume (Length x Width x Height) x Air Change Frequency (60-100). The air change frequency 60-100 in the formula is an empirical value. If the spray booth operation time is short and the amount of paint sprayed is small, the value…

20Aug 2025 by robotic paint

Putty Application Process in Surface Coating

Tutorial

Putty is a popular solution in many products surface coating technologies. Especially for automotive and carbon fiber products like bumper, helmet & related parts. In order to properly apply putty, there's strict process to follow and checkup. Following we will share a sample of the putty process used in automotive parts coating and also trouble-shooting of common problems. Surface Requirements for Putty The primer on the workpiece to be applied must be completely dry and free of oil, dust, and other contaminants. If the primer is not completely dry, the solvent in the primer will not be able to evaporate after the putty is applied and cured, becoming trapped beneath the putty layer. This can easily cause bubbles and delamination when exposed to high temperatures. Mixing and Applying Putty Putty:…

12Aug 2025 by robotic paint

In-depth Analysis of Car Bumper Spray Painting Process

Tutorial

Bumper is the most important part from car exterior plastic components. In order to make all components harmonize properly after assembly, surface painting plays an crucial role from the entire production process. In following section we'll in-depth analyze the car bumper painting process and it's key technologies. It also works with other car exterior plastic parts painting. Process Flow Loading → Pretreatment (Pre-degreasing → Degreasing → Rinse 1 → Rinse 2 → DI Rinse → Blowing) → Drying → Cooling → Transfer to Painting Line → Wiping and Polishing → Flame Treatment → Electrostatic Dust Removal → Primer Spraying → Leveling → Topcoat Spraying → Leveling → Varnish Spraying → Leveling → Curing → Inspection, Polishing, and Testing → Unload The modern process of pretreatment cleaning alredy replaced by snow…

29Jul 2025 by robotic paint

In-depth analysis of high temperature & humidity impact for coating application

Tutorial

In order to get high quality surface finishing, we always trying to seek for the best equipment as well as its most compatible coatings. Especially for cosmetic and automotive industry, the paint shop is constructed by the most advanced technologies with a variety of intelligent devices. Among all the construction reviews, environment control is the most crucial topic and it will determine if we can receive expected fine rate directly. Environment control is all about temperature and humidity as well as the air cleanness inside workshop. Following we'll deeply analyze the impact of high temperature and high humidity for coating application. Impact of high temperature on coating Different paints have different lifespans, and their lifespan shortens as the temperature rises. The viscosity of two-component paints decreases with increasing temperature. As…

05Jul 2025 by robotic paint

In-depth Analysis of Automotive Plastic parts Pre-treatment Mechanism

Tutorial

Due to its obvious advantages such as low price, light weight and good flexibility, the proportion of plastic components used in automobiles has increased greatly. The coating of automotive exterior plastic parts has higher and higher requirements in appearance and performance. Plastic parts have their own characteristics, small surface polarity and poor adhesion to the coating. How to do a good job in the pre-treatment of plastic coating is the key to the entire plastic coating. Degreasing 1.1 Overview of degreasing Automobile plastic parts are basically injection molded, a layer of release agent is applied in the injection mold. The release agent is generally a fatty acid grease, which will partially remain on the plastic surface. Degreasing of plastic parts is to remove the release agent and dust or dirt…

14Jun 2025 by robotic paint

Soft Skin-feel UV Coating Application Guidance

Tutorial

Soft kin-feel UV coating is a special type of UV resin, which is mainly designed to simulate the touch and visual effects of human skin. It's fingerprint resistance and remain clean for a long time, strong and durable. Furthermore, there's no discoloration, no color difference, and resistant to sunlight. Skin-feel UV curing technology is a surface treatment process based on ultraviolet radiation curing. Through the synergistic effect of special light sources (such as excimer UV lamps or UVLED) and formulated resins, the coating can be quickly cured and the surface can be given a delicate and smooth skin-feel effect. Here are some of the main features and applications of skin-feel UV resin: Touch: Skin-feel UV resin can provide a delicate, smooth and elastic feeling similar to human skin. Visual effect:…

23May 2025 by robotic paint

Laptop Cover Refurbishing Tutorial

Tutorial

[vc_row][vc_column][vc_column_text] Laptop cover refurbishing is a huge market in the world. Not only because of its competitive price, but also a great support to recycle damaged PC and reduce electric wastes. In this tutorial we will provide step by step guidance how to remake a laptop panel to its original condition. Before we start anything, we need to prepare some necessary tools which we will use in the process like the following: Abrasive paper(800-1200 mesh), cotton cloth, cleaning agent, paint, face mask, tape & gloves Pre-treatment The first step is to clean up the panel to make sure it's dust and grease free so we can move to the next step with no problem. In order to make the panel clean enough we need to use a cloth with cleaning…

20May 2025 by robotic paint

Principle of Paint Film Salt Spray Test

Tutorial

What is salt spray test? Salt spray test is an accelerated corrosion resistance evaluation method that artificially simulates atmospheric salt environment. It is generally used to evaluate, screen and compare materials (surface film layer) or surface treatment processes. Through salt spray test, the areas and parts of potential problems from product can be determined, the deficiencies in quality control can be found, and design defects can be found. Salt spray test is to atomize a certain concentration of salt water then spray it in a closed constant temperature chamber. The corrosion resistance of the tested sample is reflected by observing the changes after the tested sample is placed in the chamber for a period of time. Comparing to the natural environment, salt concentration of chloride in the salt spray environment…

Category: Tutorial