The carrier systems of the masterbatches and additive combinations are specifically developed for a wide variety of processes and applications, including the following:
Foam Extrusion, used in the manufacture of film, sheet, profile and pipes. The wide variety of applications for foamed extrusion products ranges from thermoformed packaging and profiles to foam core pipes.
Foam injection molding, used in the manufacture of lightweight structural parts. HYDROCEROL CFAs produce a uniform, fine cell structure and smooth part surface, with reduced cycle times.
Direct gas extrusion, used in the manufacture of physically blown film and sheet. The addition of HYDROCEROL active nucleating agents produces more uniform, fine-celled foam structures.
In the extrusion of chemically foamed products, the foaming agent master (or powder) is either pre-mixed with the resin or fed seperately into the extruder. During processing, the temperature of the polymer melt activates the decomposition reaction of the CFA.
Gaseous components are generated and dissolved in the polymer melt by the extrusion pressure. The pressure gradient between the extrusion pressure and the ambient pressure as the polymer exits the die causes a cellular structure to form within the extrudate in much the same way uncorking a bottle of champagne causes the wine to foam. This cellular structure results in density reductions of 15 to 30% in films and sheets and 20 to 40% in pipes, profiles and boards.
Foam extrusion is used for the manufacture of cast film, blown film, sheet, profile and piping. The wide variety of applications for extruded foam products ranges from decorative ribbons to thermoformed food trays or cups to profiles for picture frames and foam core pipes. |
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