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Many Russian cities are replacing asphalt sidewalks with paving blocks and slabs. This type of surface looks modern, but cement products have a limited service life. Replacing cement with a polymer-sand composite solves this problem and helps avoid repairs for many years.
Advantages of sand-and-polymer paving slabs include high wear resistance, resistance to weathering, impact strength, a wide range of shapes and colors, easy installation and an affordable price. Together, these properties ensure stable demand.
Polymer-Sand Product Manufacturing Equipment
A business plan for manufacturing polymer-sand paving slabs, taking potential risks into account, indicates profitability of about 80% and a payback period of 6–8 months. The key is to choose high-quality equipment. NPO Zvezda offers ready-made solutions for different production volumes. A well-planned configuration, low energy consumption and the option to replace individual units make it possible to implement projects of any scale.
The basic equipment package for manufacturing polymer-sand paving slabs includes:
- Industrial scales for dosing the components;
- A shredder for reducing plastic waste;
- An agglomerator (required when using LDPE, HDPE or polypropylene film waste);
- A melting chamber;
- An extruder;
- A press;
- Molds.
On request, the line can be equipped with a sand-drying machine and a drum crusher for reducing defective products before recycling.
The equipment can be installed within one day. After commissioning and operator training, the line is ready to manufacture products in various shapes and colors.
- The shredder reduces plastic waste when used polymers serve as the raw material.
- The mixer produces a homogeneous polymer-and-sand mixture with uniform pigment distribution.
- The melting and heating unit uniformly mixes and melts the polymer, sand and pigment. The extruder is equipped with temperature controllers that maintain the specified temperature in each zone and switch off automatically if deviations occur. Additional options are available on request. NPO Zvezda equipment can process any sand. Sand moisture does not affect the quality of the finished products.
- Molds are the main tooling for manufacturing polymer-sand slabs. They are made of high-strength steel and equipped with mechanisms for ejecting finished products.
When the technology is followed, the resulting slabs are dense and strong, without voids or cracks.
