作者: Marvin E Wallis
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摘要: An extruding head is provided for receiving viscous resin material under substantial pressure and forming a thin sheet or film which may be applied directly to wrapping packages articles. Biaxially oriented strength characteristics are obtained in the by through an elongate narrow gapped orifice extends between interior concave wall of cavity closely conforming exterior convex surface body such that extruded radially thereof thus biaxial directions. This radial extrusion pattern also causes fanned out into substantially wider than dimensions orifice.