How to identify unqualified plastic bags?

Most of the shopping on the food market now uses plastic bags to pack items that are light and easy to use. However, plastic packaging bags on the market due to the mess of manufacturers and purchase channels, plus some unscrupulous traders are driven by interest often use toxic and hazardous and other unqualified raw materials (even raw materials that the state strictly prohibits the use of) to produce plastic bags of different sizes, The food market is for use by consumers. Although the relevant administrative law enforcement agencies have continuously inspected and punished them severely, toxic and hazardous plastic packaging bags still continue to be banned. Consumer safety risks are extremely high.

In order to safeguard the legitimate rights and interests of consumers, the Consumers Association of Yuquan District, Hohhot City, Inner Mongolia, reminded consumers that when using plastic bags, they should correctly grasp the following three convenient methods for identifying the advantages and disadvantages (toxic and harmful) of plastic bags. One is the hand recognition method. The qualified plastic food packaging bags are smooth and pliable when touched by hand, and hard and sticky textures are mostly unqualified packaging products. The second is flooding identification. Qualified food plastic bags floating in water containers, poor quality or unqualified often sink to the bottom. The third is lighting identification method. Qualified easy to ignite, blue flame, toxic and harmful and other unqualified plastic bags are not easy to ignite.

Thrust Spherical Roller Bearing

A spherical roller thrust bearing is a rolling-element bearing of thrust type that permits rotation with low friction, and permits angular misalignment. The bearing is designed to take radial loads, and heavy axial loads in one direction.

Spherical roller thrust bearings are of separable construction, The shaft washer is assembled with the cage and a number of asymmetrical spherical rollers and has to be used along with a housing washer having sphered raceway. During mounting, the rings are to be fixed on to their respective seats â€“ shaft washer on the shaft and housing washer on to the housing and then they have to be put together carefully They are manufactured in multiple series.

The raceway of the housing washer is at an angle with it`s ais of rotation, so as to be able to allow the rollers to remain in touch with it. As a result, a spherical roller thrust bearing is capable of carrying both a radial as well as an axial load. Spherical roller thrust bearings â€“ because of their internal geometry â€“ are capable of accommodating certain amount of misalignment. However, they can take axial loads only from one direction, and may need to be used in pairs in Back-to-Back or Face-to-Face arrangement, if thrust load from both the directions are to be carried.

Spherical roller thrust bearings are capable of compensating misalignment and shaft deflection.

The bearings are manufactured in normal accuracy. However, bearings with higher running accuracy can also be supplied.
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