A trimmer line for use with a trimmer head of a rotary trimmer is provided, wherein the trimmer line comprises two substantially equal lengths of line connected to each other by one of their ends to form the trimmer line, the two substantially equal lengths of line being of different colors to indicate the middle of the trimmer line. Such a trimmer line allows to easier, or more at least more accurate, spooling of the trimmer line on a trimmer head.

The invention relates to a monofilament for cutting vegetation, comprising: a matrix (1) made of a first material comprising at least one polyamide and at least two channels (2, 2a-2d) separately embedded in the matrix (1), the at least two channels being made of a second material different from the first material,
wherein the second material comprises at least one biopolymer and/or at least one recycled polymer.

The invention relates to a monofilament for cutting vegetation, comprising: a matrix (1) made of a first polyamide material and at least two channels (2, 2a-2d) separately embedded in the matrix (1), the at least two channels being made of a polyolefin material or a second polyamide material different from the first polyamide material.

A string reel (1) for being mounted on a cutting head of a string trimmer in a rotatable manner in mowing operation. The string reel (1) is constructed as an exchangeable wearing part, onto which a number of mowing string strands (2) is wound up, for example two mowing string strands (2), so that in mowing operation each free thread end is pulled radially outwards by centrifugal force and the piece of thread pulled outwards by the rotary movement in mowing operation and located at the free thread end can knock off plant stalks. The mowing string strands (2) have a greater length than the respective thread piece pulled outwards in mowing operation at the free thread end, so that the number of mowing string strands (2) can be pulled out at the free thread end after wear of the thread piece.

A biodegradable string trimmer line that is formed from a biodegradable aliphatic polyester produced primarily from diacid and diol monomers. The string trimmer line is produced by an extrusion process.

Trimmer line compositions and methods for forming trimmer line compositions are provided. The trimmer line compositions include a biodegradable toughening agent and polycaprolactone and advantageously increase the degradability of the trimmer line with minimal-to-no impact on the performance of the composition as trimmer line.

A trimmer line for use with a trimmer head having an outer diameter and defining an axis of rotation. The trimmer line may include an elongated body having a first end, an opposite second end, and a center between the first end and the second end. The trimmer line also may also include indicia formed on the elongated body and spaced from the center point a distance greater than or equal to about half the outer diameter.

A novel monofilament trimmer line is provided for reducing noise, reducing air drag and increasing durability by having a non-round cross-sectional shape defined as a polygon with three to six sides wherein the vertices between adjacent sides have been replaced with generous circular arcs, the arcs of a parabola, or even other arc shapes so long as the arc is convex and contains no sharp edges and wherein each arc is tangent to the two adjacent sides with a smooth and continuous transition, and the sides of the polygon are either straight or slightly convex, but not concave.

A trimmer line spool has first and second spool chambers for a trimmer line. First and second holder pairs are provided. The first holder pair has first and second trimmer line holders associated with the first spool chamber and the second spool chamber, respectively. The second holder pair has first and second trimmer line holders associated with the first spool chamber and the second spool chamber, respectively. The trimmer line holders of the first holder pair each have a first opening for the trimmer line. The trimmer line holders of the second holder pair each have a second opening for the trimmer line. A diameter of the first openings is larger than a diameter of the second openings. The first openings are positioned at an angle of 150° to 210° to each other. The second openings are positioned at an angle of 150° to 210° to each other.

A novel monofilament trimmer line is provided for reducing noise, reducing air drag and increasing durability by having a non-round cross-sectional shape defined as a polygon with three to six sides wherein the vertices between adjacent sides have been replaced with generous circular arcs, the arcs of a parabola, or even other arc shapes so long as the arc is convex and contains no sharp edges and wherein each arc is tangent to the two adjacent sides with a smooth and continuous transition, and the sides of the polygon are either straight or slightly convex, but not concave.