发明授权
US07914724B2 Methods for extruding a honeycomb article with a skin surrrounding a central cellular structure 有权
用于挤压具有围绕中央细胞结构的皮肤的蜂窝制品的方法

Methods for extruding a honeycomb article with a skin surrrounding a central cellular structure
摘要:
Disclosed is a method and apparatus for forming a circumferential skin surrounding a central cellular structure of an extruded honeycomb article. The method and apparatus may be used to produce defect-free skins and/or skins having large thickness and a high degree of particle alignment thereby preferably exhibiting CTE comparable to the extruded webs. These benefits are achieved by providing a die and method wherein a flow, Q, exiting any two active ones of a plurality of peripheral slots forming the skin is substantially equal. Also disclosed is a thick-skinned ceramic article having a thick extruded skin (ts′>5 tw′) with an I-value comparable to the webs.
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