Polyurethane adhesives for sandwich panels
Sandwich panels are sheets composed of two layers of facing and a core. The facing is usually made of metal sheet, foil, or fiberglass, while the core is made of PIR foam or rock wool. A polyurethane adhesive is an essential component.
PU Adhesive in Sandwich Panel Production
Sandwich panels are construction products used for thermal insulation of buildings. They can also serve as structural material for warehouses or livestock buildings.
They are manufactured using materials that inhibit heat transfer, as well as external layers that provide reinforcement and additional protection.
In the production of panels made from compressed mineral wool or poured polyisocyanurate foam, a polyurethane adhesive is necessary to bond all the elements (also referred to as a primer).
Types of Adhesives Used in Sandwich Panel Production
Our product range includes both one-component and two-component adhesives. In the case of one-component adhesives, polyols and isocyanates—the two basic components—are mixed together to form a prepolymer that reacts with moisture from the environment. In the case of two-component adhesives, these components are stored in separate containers and are mixed together; the reaction to form the polyurethane bond occurs based on the reaction of the isocyanate with hydroxyl groups from the polyol component.
Depending on the type of panel, different types of PUR adhesives can be used:
- One-component: for sandwich panels with a PIR core.
- Two-component: for manufacturing panels with mineral wool.
Adhesives for panels with mineral wool core
| Product | Open time [s] | Viscosity [mPas] | Density [g/cm3] |
| Puroxen W2K11/01 Component A | 25-30 | 1800 – 3200 | 1,50 – 1,65 |
| Puroxen W2K11/01 Component B | 25-30 | 150 – 250 | 1,22 – 1,24 |
| Puroxen W2K12/01 Component A | 30-50 | 2000 – 4000 | 1,50 – 1,65 |
| Puroxen W2K12/01 Component B | 30-50 | 150 – 250 | 1,22 – 1,24 |
Adhesives for panels with polyurethane core
| Product | %NCO Content | Viscosity [mPas] | Density [g/cm3] |
| Puroxen SPA 100 | 15,3 – 16,7 | 3000 – 5000 | 1,07 – 1,17 |
Strength of polyurethane adhesives
Product Technologist
In our research and development department, we have designed modern polyurethane adhesives that are essential in the production of sandwich panels. These advanced building panels consist of two layers of facing and a core, which can be made of PIR foam or mineral wool.
Our polyurethane adhesives, both single-component and two-component, are tailored to the specific requirements of panel production. We also offer solutions that ensure excellent thermal insulation properties and durability. Our innovative products guarantee effective bonding of components and high quality of the final product, supporting both construction and industry.
Senior R&D Technologist - Kacper
Ask about the product!
Write an email to Dawid
Dawid is the manager of the polyurethane adhesives sales department and will be happy to answer your questions.
Dawid
Product Manager
