Abstract: An improved package and method for manufacturing extruded monofilament string trimmer line incorporates preconditioning of the line to provide a high moisture content. The line then is packaged in a sealed package with a removable cap to permit withdrawal of line from the package. A moisture-laden sponge may be placed within the bottom of the package to maintain a high humidity within the package. Copper chloride or cobalt chloride salts also may be coated on the line, or added to the plastic forming the line to provide a color indication of the relative moisture content of the line.

Abstract: A monofilament line for a rotating string trimmer has a main body portion of a generally circular configuration. One or more sharp longitudinal cutting edges are integrally formed with the main body portion and protrude from the main body portion at an angle selected to cause controlled flex and asymmetrical drag on the cutting element, as it is rotated by a rotating string trimmer. This causes a torsional rotation of the free end of the line as it is rotated; so that the main body portion of the cutting element first strikes the object to be cut, followed by contact with the sharp cutting edge. This configuration is selected to cause cleaner cuts of grass and the like, with less shredding of the cut ends of the grass blades. In addition, larger vegetation such as weeds and small stalky shrubs may be efficiently cut without abnormally high wear of the cutting line.