Crumb Rubber Powder 20-Mesh
Crumb rubber with a 20 mesh size falls between coarse and medium crumb grades.
It consists of small, granular pieces of recycled tire tread, with a particle size around 840 microns (0.84 millimeters).
Process:
Similar to other crumb rubber sizes, there are two main production methods:
Ambient Mechanical Grinding:
This is the most likely method for 20 mesh crumb.
- Scrap tires are shredded into chips.
- Metal and fibers are removed using magnets and air separation systems.
- The rubber crumb is then ground in mills. The number of grinding passes may be less than finer grades but more than the coarse 10 mesh size.
- Screens or air classifiers separate the crumb into different sizes, isolating the 20 mesh fraction.
However, for 20 mesh, mechanical grinding is typically sufficient and more cost-effective.
Technical Specifications:
Mesh Size: 20-Mesh
Particle Size: Approximately 840 microns (0.84 millimeters)
Fineness: Medium
Other Specifications (may vary depending on supplier):
Moisture content: Typically, less than 0.2%
Ash content: Typically, less than 10%
Material: Recycled tire rubber (can be natural or synthetic)
Uses:
The medium size of 20 mesh crumb rubber makes it suitable for applications requiring a balance between drainage, some structural integrity, and a smoother surface compared to coarser crumb. Here are some common uses:
Playground Surfaces: Can be used as a top layer on playgrounds, offering a cushioned yet somewhat smoother surface than larger crumb.
Athletic Tracks: Used as a component in athletic track underlayment’s, providing drainage and stability.
Equestrian Arenas: Can be used for the base layer of equestrian arenas, offering good drainage and some shock absorption for horses.
Construction Applications: In some cases, it might be used in specific construction projects for drainage or lightweight fill purposes.
Additional Points:
- 20 mesh crumb rubber is an eco-friendly product utilizing recycled tires.
- The specific properties can be tailored depending on processing methods and additives.
- Proper handling is crucial due to potential dust inhalation hazards.