China office chair quality and safety ratings

About China Office Chair Quality and Safety Ratings
How to assess the rating of hazardous substances?

How to adjust the safety performance of office chairs with gas springs?

China Furniture Association publicly released the “Office Chair Quality and Safety Rating” draft for comment (hereinafter referred to as “draft comments”). This is the first time office chair quality and safety into three levels: A, B and C.

“Due to the low barriers to entry into production, the profits of the office chair industry in homogeneous competition is getting lower and lower.

Some small enterprises with a low level of quality produce products that can hardly meet the assembly and quality requirements of office chairs. This has seriously hindered the development of the industry.” Personnel from the relevant units involved in the development of the standard presented the following to the Government Procurement Information reporter.

The establishment of the Office Chair Quality and Safety Rating Program is a further continuation and expansion of the oversight of office furniture product quality. It will guide office furniture companies to actively engage in product design improvements and innovations. And allow them to help improve the quality and efficiency of the management of the relevant government regulatory agencies.

Classification assessment of hazardous substance limits
The content of hazardous substances in furniture is an extremely important quality indicator. The current furniture product standards set out the requirements for the limits of hazardous substances in furniture.

The “draft for comments” not only increases the limit of harmful substances in textiles and leather, but also classifies the content of harmful substances involved in these two materials.

In the textile inspection program, as a basic inspection items, the use of decomposable carcinogenic aromatic amine dyes is prohibited. Formaldehyde content is a graded inspection items, A grade requirements ≤ 20 mg / kg.

In the leather products inspection program, as a basic inspection item, azo dyes are prohibited. And free formaldehyde is designed as a graded inspection items, A grade requirements ≤ 5 mg / kg.

As armrests, backrest frames and five-star bases of office chairs are usually made of plastic materials, so the “draft commentary” will be adjusted to the limits of hazardous substances in plastic furniture as the basic inspection items.

In addition, it requires that the limit value of hazardous substances in plastic should meet the following requirements. This is the “limit of harmful substances in plastic furniture GB28481-2012″. So that it can ensure the quality and safety of office chairs.

Strengthen the inspection of gas spring office chairs
In various places, the market supervision department issued product quality sampling reports. Disclosed that “the safety performance of office chairs with gas springs failed” item. The so-called “substandard safety performance” usually refers to the lack of isolation between the base of the office chair and the gas spring.

Because when the gas spring explosion, the steel plate or base plate for isolation can effectively prevent the gas spring break through the surface of the seat. However, if this isolation is missing, the exploding gas spring will cause direct injury to the user.

For safety testing of office chairs with gas springs, the Draft Commentary includes the wall thickness of the gas spring (inner tube, outer tube, and vertical tube) as a basic inspection item.

The type of isolation measures between the bottom surface of the seat and the gas spring is designed as a basic safety check item. It is divided into three levels.

Among them, Type A means that a steel plate or tilting mechanism with a thickness greater than 2.0 mm should be used for isolation.

And category B means that a steel plate or tilting mechanism with a thickness of 2.0 mm should be used for isolation.

Other important information about office chair gas spring inspection
It is worth mentioning that in order to improve the accuracy and validity of the results of the test method, the Draft Review will use a vernier caliper or micrometer. In order to measure the thickness of the isolation plate and three parts. In addition, it is going to calculate the average value and modify it to about 0.1 mm.

Most of the time, a quick tour of the gas spring production facility will give you an idea of what kind of quantities the manufacturer can offer.

“With regard to furniture design, especially when designing office furniture, European countries attach great importance to the study of quality and safety rating issues.

In recent years, the concern for the quality of office furniture in China has also risen to the level of quality and safety ratings.” Personnel from relevant units involved in the development of standards told reporters.

The revision of the “Office Chair Quality and Safety Ratings” group standard will urge manufacturers of office chair parts to

Research products with higher safety
Make a good tactical arrangement in the fierce competition.

Category C means that a steel plate or tilting mechanism with a thickness of not less than 2.0 mm should be used for isolation.