PU proizvodi
PURO Purification Technology (Suzhou) Co., Ltd established in year 2008, is a professional factory specialized in filtration products such as HEPA filters, UEPA filters, Multimedia filters, Brush roller, PU related products etc. PURO covers an area of 2600 square meters with a total investment of 10 million CNY. We have 118 employees now with 6 professional technical engineers and R&D engineers
It has testing equipment as well to guarantee the correct specification in the R&D stage and high-quality daily shipments.
We have 118 employees now with 6 professional technical engineers and R&D engineers.
Equipped with one advanced automatic and two semi-automatic production lines to implement the lean manufactory.
Established in 2008, it has more than 14 years experience industry.
1.Wide range of hardness
The classification of hardness for polyurethane relies on the prepolymer's molecular structure and can be manufactured from 20 SHORE A to 85 SHORE D
2.High load bearing capacity
3.Flexibility
4.Abrasion & impact resistance
5.Tear resistance
6.Resistance to water, oil & grease
7.Electrical properties
8.Wide resiliency range
Resilience is generally a function of hardness. For shock-absorbing elastomer applications, low rebound compounds are usually used (i.e. resilience range of 10-40%). For high frequency vibrations or where quick recovery is required, compounds in the 40-65% resilience are used. In general, toughness is enhanced by high resilience.
9.Strong bonding properties
10.Performance in harsh environments
11.Mold, mildew & fungus resistance
12.Color ranges
13.Economical manufacturing process
Polyurethane is often used to manufacture one-off parts, prototypes or high volume, repeat production runs. Size ranges vary from a couple grams to 2000lb parts.
14.Short production lead times
This type of polyurethane is most commonly used as a cushioning or protective material. It is found in furniture, mattresses and bedding, and vehicle interiors. It makes up about 30 percent of the polyurethane sales in North America.
These foams are used in commercial and residential insulation because it is energy-efficient and versatile. This foam keeps buildings cool in the summer and warm in the winter. It also dampens exterior noises.
They create tight bonds between different products, and they can seal products that need to be air- or water-tight. The CASE polyurethanes can be molded into any shape and they are lightweight with notable durability and environmental resistance.
This type of polyurethane can be used in many construction and automotive applications. It is elastic, flexible, and abrasive-resistant. It also withstands a range of temperatures and impacts.
This type of polyurethane is used as coatings or adhesives, but with a water-based solvent. These have become popular in place of volatile organic compounds and hazardous air pollutants.
Polyurethane products are often molded into foam that can serve for a variety of uses for human comfort. This foam can differ in terms of density, firmness, durability, and quality. A higher density and quality equates to a higher price (often sold by the quarter inch, by sheet). Softer, temporary material is often used for short-term uses, such as baby mattresses, whereas the top-of-the-line tough luxurious foam is usually reserved for bay window cushions. Standard fabric car seats tend to use polyurethane, as it is both comfortable and durable.
Low-density rigid polyurethane has a range of uses—one of the most useful is its thermal insulation application. During the construction of a building, insulating the walls with low-density rigid polyurethane can dramatically reduce heating and cooling bills by keeping the heat out during the summer, and in during the winter. This, in turn, cuts carbon emissions and helps decrease the negative impact of expending energy on the environment. Additionally, polyurethane tends to have a long-life span (well over five decades) and requires absolutely no maintenance. This makes it a choice material for anyone building a new home.
Polyurethane coatings allow a protective, ultra-thin coating over different materials, which allows for a longer lifespan and an improved look. When laying down a wooden floor, polyurethane allows the wood to maintain its look while still protecting against the elements (especially water-rot). On a car, the polyurethane gives a protective varnish that helps defend the body from scratches, dents, and general weather damage. The great advantage of polyurethane coating is that one treatment lasts an immense amount of time.
1. At the start of polyurethane foam production, the reacting raw materials are held as liquids in large, stainless steel tanks. These tanks are equipped with agitators to keep the materials fluid. A metering device is attached to the tanks so that the appropriate amount of reactive material can be pumped out. A typical ratio of polyol to diisocyanate is 1:2. Since the ratio of the component materials produces polymers with varying characteristics, it is strictly controlled.
2. The reacting materials are passed through a heat exchanger as they are pumped into pipes. The exchanger adjusts the temperature to the reactive level. Inside the pipes, the polymerization reaction occurs. By the time the polymerizing liquid gets to the end of the pipe, the polyurethane is already formed. On one end of the pipe is a dispensing head for the polymer.
3. The dispensing head is hooked up to the processing line. For the production of rigid polyurethane foam insulation, a roll of baking paper is spooled at the start of the processing line. This paper is moved along a conveyor and brought under the dispensing head.
4. As the paper passes under, polyurethane is blown onto it. As the polymer is dispensed, it is mixed with carbon dioxide which causes it to expand. It continues to rise as it moves along the conveyor. (The sheet of polyurethane is known as a bun because it "rises" like dough.)
5. After the expansion reaction begins, a second top layer of paper is rolled on. Additionally, side papers may also be rolled into the process. Each layer of paper contains the polyurethane foam giving it shape. The rigid foam is passed through a series of panels that control the width and height of the foam bun. As they travel through this section of the production line, they are typically dried.
6. At the end of the production line, the foam insulation is cut with an automatic saw to the desired length. The foam bun is then conveyored to the final processing steps that include packaging, stacking, and shipping.
