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公开(公告)号:USD424109S
公开(公告)日:2000-05-02
申请号:US44201
申请日:1995-10-06
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公开(公告)号:US6017477A
公开(公告)日:2000-01-25
申请号:US686208
申请日:1996-07-23
申请人: Gary Lu , Ganesh V. Rao , Mingchih M. Tseng
发明人: Gary Lu , Ganesh V. Rao , Mingchih M. Tseng
CPC分类号: B29C37/005 , B29C47/0023 , B29C47/003 , B29C47/021
摘要: Extrusion apparatus is employed in a co-extrusion process to produce a triangular-shaped barrel for a writing instrument. An inner layer of material is extruded in tubular form having a substantially circular cross-section. A coating layer of three strips of material, equally spaced one from the other, is co-extruded about the outer periphery of the inner layer. A combination of forces produced during the process is effective to distort the inner layer to form a product having a substantially triangular shape.
摘要翻译: 挤出设备用于共挤出工艺以产生用于书写工具的三角形桶。 内层材料以管状形式挤出,具有基本圆形的横截面。 围绕内层的外周共挤出三条等距的材料条的涂层。 在该过程期间产生的力的组合有效地扭曲内层以形成具有基本三角形的产品。
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