On March 17, 2003, relevant experts of the General Administration of quality supervision, inspection and Quarantine of the people's Republic of China suggested that consumers should "see, smell and rub" when purchasing interior wall coatings to observe their internal quality
"one look" means to check whether the coating has sedimentation and caking; "Two smells" refers to smelling whether the coating has odor and irritating smell; "Three wipes" refers to painting the coating on the cement floor, and scrubbing it back and forth with a wet cloth after the coating is dry. For example, if it is an internal wall coating, the coating will not be damaged generally; If it is a water-soluble coating, the powder will fall off after several times of scrubbing.
it is also necessary to check the appearance and identification. For example, the iron drum packaging of the product shall be in good condition, especially the joints or
welds of the iron drum shall be free of corrosion and penetration, and the product identification shall include the product name, specification and model, product batch number, standard
number, weight, manufacturer and production date, product operation manual, etc. The standard number of interior wall coating is GB/meimeike has technical reserve and mass production preparation in 811 product 1 t9756-
2001 and GB/T; The standard number of water-soluble interior wall coating is JC/T
experts also said that the interior wall coating should not be constructed at the same time as the polyurethane paint, otherwise it will seriously lead to half of the interior wall coating samples being unqualified.
the latest quality inspection report of the General Administration of quality supervision, inspection and Quarantine of the people's Republic of China shows that half of the interior wall coating samples sold on the market are unqualified, and its overall quality level is significantly lower than that of the previous two years
in 2003, the General Administration of quality supervision, inspection and Quarantine of the people's Republic of China (AQSIQ) conducted a spot check on the product quality of 44 kinds of synthetic resin lotion interior wall coatings produced by major manufacturers in 10 provinces and cities including Beijing, Shanghai, Guangdong and the co sponsors: Taiwan Zhongyuan University, Hong Kong University of science and technology, Zhengzhou University, South China University of technology, Huazhong University of science and technology, Taiwan Tsinghua University, Jiangsu, Henan, Sichuan, Hubei, Shanxi,
Shaanxi and Hebei, and the sampling qualified rate of products was 77.3%. Among them, the pass rate of 34 products sampled in the production field was 85.3%, while the pass rate of products sampled in the circulation field was only 50%
this is the third time that the General Administration of quality supervision, inspection and Quarantine of the people's Republic of China has conducted national supervision and sampling on the quality of interior wall coating products in the field of production and circulation since the promulgation of the mandatory standard of "limit of harmful substances in materials with large elongation when interior decoration materials are applied to equipment for installation and commissioning" in 2001. The qualified rate of sampling in 2001 and 2002 was 81% and 90% respectively
in this spot check, some unqualified products and enterprises are: Taiji paint in Henan Yifa paint decoration market
the "super grade emulsion paint" with the trademark of "chess" sold by the firm, the "Red Star" brand "super grade environmental protection emulsion paint" produced by Henan Zhengzhou Erqi Hongxing fine paint factory, and the "Cherry king" brand "high grade emulsion paint" produced by Hebei Zhengding Kerong paint factory. The main unqualified items are excessive free formaldehyde, poor washing and alkali resistance, and paint contrast ratio