The US recycling industry calls on residents not to flatten waste plastic bottles

A recent report released by several industry associations in the United States said that the flattening of waste plastics can save space, but it will bring difficulties to the recycling process. Resa Dimino, director of public policy at the National Association of PET Container Resources in the United States, said that if plastic containers can be kept in their original shape, the possibility of mixing into other material recycling streams (such as paper) can be reduced.

The US recycling industry has encouraged residents to squash waste plastic containers many years ago because of the limited space available for household recycling bins. Now with the popularity of large wheeled trash cans, the storage space is no longer a major problem, so the US recycling industry has called on everyone to love not to crush the waste plastic bottles. The large garbage truck responsible for recycling waste also solved the space limitation.

According to the report, the shape, material and hardness of the recyclate have a significant impact on the success rate of recycling. For example, today's mineral water bottles are much thinner and softer than they used to be, and are more likely to be crushed. But the report is for a mixed material recycling system in the United States. If the recycled items are clearly classified from the beginning, then squashing is not a big problem.

Jiuzhi Plastics Network

NSK Bearing

NSK manufacture a full range of deep groove ball bearings. These bearings are the most common type and are used in a wide variety of applications.

Single-Row Deep Groove Ball Bearings
Pressed Steel Cages
Single-row deep groove ball bearings are the most common type of rolling bearings. Their use is very widespread.
In addition to open type bearings, these bearings often have steel shields or rubber seals installed on one or both sides and are prelubricated with grease. Also, snap rings are sometimes used on the periphery. As to cages, pressed steel ones are the most common.
For big deep groove ball bearings, machined brass cages are used.
Machined cages are also used for high speed applications.

Extra Small Ball Bearings and Miniature Ball Bearings
Miniature and instrument ball bearings can be divided into two basic types, deep groove and angular contact. The first (deep groove) can be further divided into the following five classes depending on their design details:

Standard type
Flanged outer ring
Extended inner ring
Expanded type in which one ring has a radial thickness that is larger than normal compared with the bearing width.
Thin section type in which both rings are extra thin in the radial direction. They can also be classified as: open, shielded, or sealed.
Maximum-Type Ball Bearings
Maximum-Type ball Bearings contain a larger number of balls than normal deep groove ball bearings because of filling slots in the inner and outer rings. Because of their filling slots, they are not suitable for applications with high axial loads. types of bearings have boundary dimensions equal to those of single-row deep groove ball bearings of Series 6200 and 6300 respectively. Besides the open type, ZZ type shielded bearings are also available. When using these bearings, it is important for the filling slot in the outer ring to be outside of the loaded zone as much as possible. Their cages are pressed steel.

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