Patent ID: 8347809
Filing Date: 2013-01-08
Classification: B01F,B05C,B29C

Abstract:
1. A slot nozzle assembly for extruding a foamable melted material in a wide band, comprising: a plurality of foamable melted material passages, a lateral distribution flow route communicating with said plurality of foamable melted material passages, a shim plate disposed inside and extending across said lateral distribution flow route so as to divide said lateral distribution flow route into a first lateral distribution flow route and a second lateral distribution flow route, said shim plate including a plurality of through holes providing fluid communication between said first and second lateral distribution flow routes, said through holes each defining a hole width, a slot for discharging foamable melted material, said slot defining a slot width that is larger than the respective hole widths of said through holes, and a converging portion communicating with said lateral distribution flow route and said slot, the converging portion including a cross sectional area which gradually becomes smaller toward said slot, wherein said shim plate has a thinness that defines a thickness of said slot to be small so that the foamable melted material inside said converging portion is kept at a pressure that prevents foaming of the foamable melted material.