Patent ID: 9227354
Filing Date: 2016-01-05
CPC Classification: B29C

Claim Text:
1. A feedblock multiplier for manufacturing multilayer structure with thickness-gradient variation, the feedblock multiplier comprising: an input section, wherein materials for manufacturing the multilayer structure is input to the feedblock multiplier via the input section; a feedblock section, connected with the input section, wherein the material are divided into a plurality of fluids in channels; a segmenting section defining a bevel or a curved cross section, disposed at an output end of the feedblock section, wherein the fluids are segmented into two or more fluid segments by the bevel or the curved cross section of the segmenting section and resulting in the multilayer structure with thickness-gradient variation during manufacturing process when the fluids are transported over the plurality of channels to the segmenting section at the same time, and each fluid segment includes the fluid segmented in the channels; two or more channel-switching sections, connected to the segmenting section, wherein the every channel-switching section is with relative transportation positions of the channels in segments, and the every fluid segment flows over one corresponding channel-switching section; wherein the thicknesses of the channels over the channel-switching sections have gradient variation; a multiplier section, connected to an output end of the channel-switching sections and combined with more than one channel in the channel-switching sections, outputting the multilayer structure with stacked multiple layers, wherein the outputted multilayer structure has thickness-gradient variation; and an extruding section for co-extruding the outputted multilayer structure with the thickness-gradient variation, connected with output end of the multiplier section.