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16. May 2019

Saip: New patented technologies

Saip, a specialist for design and development of customized systems and machines for all polyurethane applications, based in Como, Italy, has recently been granted patents for a new generation of SAIP hp mixing heads, a face-up foaming fixture and an overlapping & endlapping system in the process of sandwich panel production.

Third Stream mix-head represents the new generation of Saip hp mixing heads (Source: Saip)

Third Stream mix-head represents the new generation of Saip hp mixing heads (Source: Saip)

Third Stream mix-head represents the new generation of Saip hp mixing heads, the result of long experience and targeted research which have demonstrated that the radial type mixing in the head gives better mixing results than the axial type. Third Stream mix-head allows the separate injection of the blowing agent. The recycle of the third component occurs directly in the head, by components radial mixing. According to Saip perfect nebulization is achieved as well as an optimal foam mixture thanks to the direction imprinted to the flows and to the high kinetic energy of each component. Together with a high-pressure three-component dispensing unit that Saip developed in cooperation with UNDP, Third Stream hp mixing head represents a low-cost solution especially for small and medium sized enterprises.

Saip has developed several solutions for the production of refrigerated display cabinets and vending machine cabinets which improve productivity, ensure energy saving and reduce environmental impact. Due to the face-up filling technology Saip face-up Foaming Fixture performs better filling and foam density distribution in the cavity of the cabinet. The foaming fixture top platen is fixed while the foaming fixture bottom platen has an up and down vertical movement by means of servo-motor electrical cylinders, allowing the automatic processing of the selected cabinet model to foam.

Saip Overlapping & Endlapping solution (panel longitudinal junction and foam-free area at the eaves) overcomes the limits of traditional methods which, according to situations, could imply: risk of rust, polyethylene strip management, in terms of the laying activity and the storage of different size stripes, production and management of waste of foam and of metal sheets. With the overlapping and endlapping solution, the panel is created before the foaming phase of the two surfaces with a cutting system by means of a shear and a consecutive moving overlapping system whose measurement can vary from a minimum of 10 mm to a maximum of 300 mm. After the overlap of the metal sheet, a polypropylene strip is applied at the end of the overlapping sheet so as to seal the area and prevent foam infiltration. The polypropylene strip in question has a unique measure that applies to all overlapping measures. The panel is cut using a disc that cuts the internal sheet of the panel and the foam to a certain thickness; the rest of the foam is removed with a water-jet system. The separation of the panels takes place by accelerating the panels at the exit.


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