Notice on national supervision and random inspection of product quality of interior decoration materials in 2021

Notice on national supervision and random inspection of product quality of interior decoration materials in 2021

2022-01-05 source: National Market Supervision Bureau

Recently, the State Administration of market supervision has organized the national supervision and random inspection of the product quality of interior decoration materials.

1051 batches of products produced by 1044 enterprises were spot checked, involving 7 kinds of indoor decoration material products, such as radiator for heating, solvent based wood coating, fire door, rigid polyvinyl chloride (PVC-U) pipe, ceramic brick, medium density fiberboard and particleboard. One batch of ceramic tile products is suspected of production without CCC certificate and has been transferred to the local market supervision department for treatment. A total of 1050 batches of products produced by 1043 enterprises were inspected, and 136 batches of products were found to be unqualified, and the unqualified discovery rate was 13.0%.

Notice on national supervision and random inspection of product quality of interior decoration materials in 2021

Notice on national supervision and random inspection of product quality of interior decoration materials in 2021

State supervision and random inspection of interior decoration materials and products in recent 3 years

In this follow-up spot check, 74 enterprises failed in the last spot check, 8 enterprises are still unqualified in this spot check), and 66 enterprises are qualified.

It is understood that interior decoration materials refer to the decoration materials laid, pasted or painted on the interior wall, ground, ceiling and other surfaces of buildings, and can have the functions of thermal insulation, heat insulation, fire prevention, moisture-proof and beautifying the indoor environment, which are closely related to people’s life. The overall unqualified discovery rates of such products in recent three years were 13.7%, 16.4% and 13.0% respectively.

Among them, the unqualified discovery rate of fire doors was 19.2%. This time, 198 batches of products produced by 198 enterprises in 18 provinces (autonomous regions and cities) were randomly selected, and 38 batches of products were found to be unqualified, and the unqualified discovery rate was 19.2%. A total of 130 batches were randomly selected in six centralized production areas of Zhejiang Province, Guangdong Province, Hebei Province, Jiangsu Province, Sichuan Province and Shandong Province, accounting for about 65.7% of the total batches, and the unqualified discovery rate was 20.8%.

The unqualified rate of ceramic tiles was 9.6%. 252 batches of products produced by 245 enterprises in 10 provinces (cities) were randomly selected, of which one batch of products was suspected to be produced without CCC certificate and has been transferred to the local market supervision department for treatment. A total of 251 batches of products were inspected, and 24 batches of products were found to be unqualified, and the unqualified discovery rate was 9.6%.

The unqualified rate of MDF was 15%. This time, 80 batches of products produced by 80 enterprises in 17 provinces (autonomous regions) were randomly selected, and 12 batches of products were found to be unqualified, with the unqualified discovery rate of 15%, a decrease of 8.1 percentage points compared with the previous random inspection. The static bending strength, internal bonding strength, water absorption thickness expansion rate, surface bonding strength and formaldehyde emission were tested. The unqualified items involve formaldehyde emission, water absorption thickness expansion rate, internal bonding strength and static bending strength. Through the analysis of technical institutions, the main causes of quality problems are as follows: first, the enterprise uses inferior wood raw materials; Second, the adhesive formula is unscientific, and the sizing amount and hot pressing process are unreasonable; Third, the quality control and management measures of some small enterprises are not standardized and lack the necessary control of product quality. A total of 50 batches were randomly selected in the four industrial clusters of Shandong Province, Guangxi Zhuang Autonomous Region, Guangdong Province and Hebei Province, accounting for 62.5% of the total batches, and the unqualified discovery rates were 7.7%, 11.1%, 15.4% and 26.7% respectively.

The unqualified rate of particleboard was 13.1%. This time, 84 batches of products produced by 84 enterprises in 14 provinces (autonomous regions and cities) were randomly selected, and 11 batches of products were found to be unqualified, and the unqualified discovery rate was 13.1%. The static bending strength, internal bonding strength, surface bonding strength, 2h water absorption thickness expansion rate, formaldehyde emission and other items were tested. The unqualified items include static bending strength, internal bonding strength, 2h water absorption thickness expansion rate and formaldehyde emission. Through random inspection, it was found that the items of 2H water absorption thickness expansion rate of 4 batches of products were unqualified. The main reasons for the nonconformity were unreasonable product formula design, improper sizing, wax application ratio or the amount of waterproof agent; The formaldehyde emission of 7 batches of products is unqualified, mainly because the adhesive used by the enterprise itself contains high free formaldehyde, or unreasonable sizing process and hot pressing process are adopted, resulting in a large amount of free formaldehyde remaining in the plate due to insufficient reaction and curing. 41 batches were randomly selected in the three industrial clusters of Guangdong Province, Shandong Province and Hebei Province, accounting for 48.8% of the total batches. The unqualified discovery rate of the above three provinces is higher than the national average.

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