This unit is used for preheating the upper and lower steel sheet to a moderate temperature after roll forming process. As polyurethane reacts chemically under moderate heat, the heating process for the steel sheet activates PUR and makes the adhesive strength between the steel sheet and PU foam stronger.
Depending on the number of catalysts used, the components of PU machine are determined. 4-6 component machines are mostly used.
During the production of PIR and PU boards, depending on the thickness of panels heat would be generated due to chemical reactions. In the case of PIR and thicker PU boards, products must be cooled down to room temperature in order to avoid defects in the final products. Cooling device is designed in a way that takes the boards after cutting and delays their arrival for stacking and packing. The speed of cooling could be adjusted as required.
This process is designed to pack boards bondless by use of PVC stretch wraps before final delivery.
This machine is specially designed for embossing aluminum foils with the thickness of lower than 0.1mm. The use of aluminum foils or other materials with thickness exceeding 0.2mm is not recommended.