Weprofab PU Block Features
- Good abrasion and compression resistance
- Good elasticity and vibration damping
- Resistant to high and low temperature environments
- Lightweight and good thermal conductivity
- Resistant to oil and organic solvents
Your Leading PU Block Manufacturer
Weprofab’s PU Block has lightweight, excellent elasticity, good vibration damping, and can be used in many fields such as construction, automotive, industrial equipment, furniture, playgrounds, and so on.
Except for some specific types and sizes, our PU Blocks can also be cut and processed into different sizes, dimensions, and shapes for you according to your needs. In addition, we have more than 50 colors for you to choose.
Various Types of PU Block for Sale
High-density, high elasticity PU Block can be used for bedroom, living room, dining room, office, and hotel furniture.
Industrial, shock-absorbing PU Block can be cut, machined, and molded to order.
Gymnastic, highly elastic, lightweight, and environmentally friendly PU Block, available in a variety of colors.
Good cushioning, safe and non-toxic PU Block for trampoline parks, can be customized in different sizes and colors.
PU Block Sofa Cushion can be customized in different sizes, densities, and thicknesses. It can also be used for sofas, mattresses, and other furniture.
Strong, impact-resistant, corrosion-resistant, long-lasting PU Wheel Chock Block Stopper. can withstand the impact of 30-45 tons of vehicles.
Friction-resistant, pressure-resistant PU Block can be used for gaskets, scrapers, linings, and machined components.
High-density, abrasion-resistant Rigid PU Block can be used for bearings, bumpers, drive belts, gears, mallet heads, solvent lines, and valve seats.
Excellent Properties of Weprofab PU Block
Physical properties: Weprofab’s PU block has better abrasion resistance than rubber, the rigid PU block has good compression resistance, and the soft PU block has high elasticity and better shock absorption than spring and rubber. In addition, Weprofab’s PU block is resistant to high and low temperatures, and it can be used in environments ranging from -30°C to 100°C. It has a low density and is easy to transport. And its low density makes it easy to transport.
Chemical properties: Weprofab’s PU block is resistant to mineral oil and some organic solvents, and is resistant to acid and alkali corrosion, suitable for chemical plants. It is also resistant to oxidation, ultraviolet rays, and is not easily degraded.
Various Applications of Weprofab PU Block
Construction: Weprofab’s PU block is often used as an insulating layer in walls or roofs, or as a filler in concrete frames due to its excellent thermal insulation properties.
Automotive: Weprofab’s flexible PU blocks are often used in car seats or other shock-absorbing parts due to their excellent shock absorption and resilience.
Industrial manufacturing: Weprofab’s Rigid PU blocks are commonly used as cushioning blocks in stamping equipment and molds in precision casting due to their excellent cushioning ability and high temperature resistance.
Consumer goods: Weprofab’s flexible PU blocks are commonly used in sports shoe soles and sofa cushions due to their excellent resilience.
Related Products
EVA block
PC block
EPDM block
EPS block
How to Produce PU Block?
The production of PU Block requires the following steps.
Step 1: You should mix polyol with isocyanate in the ratio of 1:2 and add catalyst, stabilizer, and foaming agent.
Step 2: You should inject the mixed raw materials into the reaction device to have a chemical reaction and form the foam structure. During the foaming process, you need to control the temperature, humidity, and other variables to regulate the foam density and pore size.
Step 3: If it’s a rigid PU block, you can mold it by pouring it under high pressure into a mold. If it is a soft PU block, you can mold it by continuous foaming.
Step 4: You should leave the molded PU block to cure, which usually takes a few hours to a day.
Step 5: You can cut and polish the cured PU block.
Step 6: You should test the PU block for density, hardness, elasticity, etc., to ensure that it meets the requirements of the application.
How to process PU Block?
PU block can be processed in the following ways.
Cutting and trimming: you can use a cutting machine or circular saw to cut the large PU material into small pieces, and then use tools such as files or carving knives to trim it by hand to remove burrs and edges.
Surface treatment: You can use coarse sandpaper to trim the surface, then use fine sandpaper to polish it, and finally use water sandpaper to sand the surface until it is smooth. At the same time, you can use sponge sand and other flexible tools to deal with the curved surface to ensure the smoothness of its surface.
Packaging: You can use vacuum bags to pump and seal the sanded PU block to improve its durability.
Small PU blocks retail for $1.83-$4/block and large industrial-grade PU blocks cost about $816. The wholesale price of flexible PU blocks is only $0.69/block, but a minimum order of 500 blocks is required.
The service life of a PU block is related to its field of application. PU block can be used as a building material for more than 50 years. As a foaming mold, it can be used 5000 times. It can last 20 years as a cushioning block for machinery and equipment, and 5 years as a furniture material.
PU blocks can be physically recycled, you can crush waste PU blocks into granules or powder and remold them by hot pressing or adhesives. Chemical recycling can also be used, you can break down the PU block under the action of a catalyst to recover polyol and amine compounds to produce a new PU block.
