摘要 |
A die apparatus (18), a method of using the die apparatus to produce co-extruded polymeric articles, and co-extruded polymeric articles produced using the die apparatus and method are disclosed. The die apparatus (18) includes a hollow vane (44) configured to extrude a material into a chamber (60) within the die, thereby producing a co-extruded web (12). The co-extruded web (12) has a plurality of distinct, discontinuous phases (59) in the cross-web direction, the phases having a uniform width as shown by a coefficient of variation of less than 8 percent for any three consecutive phases. The phases (59) are substantially continuous down-web and are surrounded by a matrix having two or more layers (61, 63). |
申请人 |
3M INNOVATIVE PROPERTIES COMPANY |
发明人 |
NORQUIST, SCOTT, G.;KRUEGER, DENNIS, L.;SIPINEN, ALAN, J.;MENZIES, ROBERT, H.;HANSCHEN, THOMAS, P.;LESEMAN, RONALD, P.;MITCHELL, SHARON, N.;NYGARD, JAMES, C.;THALACKER, VICTOR, P.;OCKELOEN, JAN |