Center Certification & Testing International
Project Introduction
The Hundred Grid Test is used to draw squares of a certain size evenly, and evaluate the degree of adhesion of the coating film to the substrate by evaluating the integrity of the coating film in the square, expressed as ‘level’. It is mainly used for the determination of the adhesion of the organic paint cross-cut method, not only for the laboratory, but also for the construction site under various conditions. Generally speaking, it is a tool to test the adhesion of the test object after painting. According to the Japanese Industrial Standard (JIS), it is divided into 1 to 5 levels. The higher the level, the stricter the requirement. When the requirement in the customer specification is level 5, it means that there can be no shedding at all.
According to the Japanese Industrial Standard (JIS), it is divided into 1 to 5 levels. The higher the level, the stricter the requirement. When the requirement in the customer specification is level 5, it means that there can be no shedding at all.
Regarding the test method of scoring a hundred grids and tape: the width of the blade is about 10mm~12mm, every 1mm~1.2mm is an interval, there are a total of 10 grids, when straight lines are drawn, there will be 10 straight line marks at the same interval, perpendicular to the straight line marks When the position is drawn down, it becomes a square of 10*10 100 squares. When the 100 square knife is drawn down, it should be cut to the bottom material, not only on the paint, otherwise the test will not be established.
After the Baige knife is scratched, it must be tested with tape to see if it falls off. First, stick the tape to the Baige position, press the finger to attach the tape tightly, and then tear the tape up with instant force to visually inspect the material Is there any peeling phenomenon on the paint? In addition, the tape is not just any one. According to the JIS standard, it is necessary to specify the brand and model. For example, 3M Transparent Tape 600, this kind of tape width is 3/4inch, length is 1296inch and 2592inch.
Use the cross method or tape method to verify the adhesion performance of the product surface coating or ink, used to verify the surface treatment process of the product.
Method Standard
GBT9286-1998 Paint and varnish film scratch test
As a household appliance, when humidifiers are sold on e-commerce platforms such as JD.com, Tmall and Taobao, they must provide quality inspection reports that meet national standards to ensure quality and safety. According to the Chinese national standard GB4706 series, humidifiers must pass safety tests. The quality inspection report must prove that the product meets safety requirements to avoid causing harm to consumers during use. The quality inspection report provides consumers with a basis for purchase. After being tested by an independent third-party institution, it enhances consumers\' trust in the product. In terms of market access, some shopping malls, supermarkets or government procurement projects require quality inspection reports as proof of product qualification.
SRRC certification is one of the necessary conditions for products to enter the Chinese market for sale. It ensures that the wireless transmission characteristics of the wireless camera comply with national standards, avoiding communication problems caused by radio interference and ensuring the legality and compliance of the product.
FCC certification is a mandatory requirement for wireless device certification in the US market. Through FCC ID certification, wireless microphones can prove their compliance with US radio transmission standards, avoiding market bans or fines for violations. This is particularly important for products that hope to be sold in the US market.
The Hundred Grid Test is used to draw squares of a certain size evenly, and evaluate the degree of adhesion of the coating film to the substrate by evaluating the integrity of the coating film in the square, expressed as ‘level’.
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