PU sealing rockwool sandwich panel is made of non-combustible structural rock wool as core material, with zinc-plated or aluminum-zinc-coated colored steel sheet as the finish, and polyurethane edge banding at both ends. Through professionally developed adhesive, the two form mutual high-quality energy-saving building board compounded by action.

This type of panel currently is recognized as the best international building fire protection and insulation board. It has low thermal conductivity, good load resistance, high bending strength, no water absorption, no decay, no moth bites, good flame retardancy, and a wide range of temperature resistance.

Using the physical properties and unique formula of polyurethane (PU.PIR), the polyurethane foaming agent is evenly sprayed on the color coated steel sheet, so that the foaming agent is foamed between the color coated steel sheets to form a three-layer disposable polyurethane ( PU.PIR) color steel composite sandwich panel. This new lightweight building material is the perfect combination of color-coated steel sheets and polyurethane, and is the development direction of lightweight building materials.

Regular specifications for choice

Panel features

1 - Sealing performance: The polyurethane double-sided sealing rock wool sandwich panel adopts the production line process, thereby taking advantage of the excellent water resistance of polyurethane products to overcome the shortcomings of rock wool, easy to absorb deliquescent, and effectively extend the service life of the product in terms of physical properties.

2 - Aesthetic performance: The interface is designed with European standards, the appearance is round and smooth, the board surface is flat and beautiful, the joints are tight, the strength is reliable, and the generation of heat bridges effect is effectively prevented.

3 - Good strength: The two-sided polyurethane rock wool core material is bonded to the two layers of steel sheet to form a whole, and work together. Its overall rigidity is much better than that of the single rockwool or other cotton core material on-site composite panel.

If for roof system, after the sandwich panel is fixed to the purlin by the connecting piece, the overall rigidity of the roof is greatly improved, and the overall working performance of the roof is strengthened. If selecting rockwool sandwich panel and therefore larger purlin 4 -distance can be used, so the amount of purlin can be saved by 1/3-2/3.

5 - Reasonable buckle connection method: Concealed buckle connection method avoids the hidden danger of seam leakage of the sandwich panel and saves the amount of accessories.

6 - Short installation cycle: Because there is no need for secondary processing on site, not only the surrounding environment can be kept tidy and does not affect the normal progress of other processes, but also can greatly shorten the installation cycle of the panel.

7 -Anti-scratch protection: During the production of the panels, a polyethylene self-adhesive protective film can be pasted on the surface to avoid scratches or wear on the surface coating of the panel during transportation and installation.

Advantages of polyurethane edge banding rock wool panel

- Excellent fire performance: The raw materials, production process and formula used for the double-sided polyurethane rock wool sandwich panel make it have good fire performance. Tests show that it has a fire resistance capacity exceeding 1000 ° C.

- Good thermal insulation: The thermal insulation of the polyurethane double-sided sealing rock wool sandwich panel is based on the thermal conductivity of rock wool λ = 0.043 W / m2 K, and is calculated based on the thickness of the rock wool core material of the corresponding proportion. 

- The sound insulation and sound absorption effect is remarkable: the polyurethane double-sided sealing rock wool sandwich panel has a significant reduction effect on noise transmission, and is especially suitable for places where designated flights pass. In addition, after using the rock wool roof panel, the impact of rain and hail on the roof steel plate of the building caused the indoor sound, which was also significantly reduced.

Panel application 

This kind of sandwich panel is widely used in steel structure buildings like workshops, power plants, power equipment companies, automobile exhibition halls, cement warehouses, steel structure offices, airport terminals, train stations, stadiums, large supermarkets, and logistics centers.

In the conclusion, PU sealing rockwool sandwich panel fully exerts the unique properties of the rock wool core material, and has significant effects in fire protection, thermal insulation, sound absorption and sound insulation; at the same time, it retains the advantages of polyurethane - plasticity, tightness, high strength and no water absorption. The advent of this building material is a revolutionary change in construction engineering, which makes the advantages of polyurethane and rock wool fully integrated, and discards the shortcomings of traditional plates. In a sense, this sandwich panel is the better one among the sandwich panels such as glasswool, EPS or NF EPS.