PP and PE twine are usually described by their material and their runlength, but the yarn form — the way the basic yarn is made — has more effect on the way a twine actually behaves than the fiber name. Split-film PP and multifilament PP are both “polypropylene twine” and they are not interchangeable.
Split film
Polypropylene is extruded as a thin film, then slit into narrow strips and twisted. The result is a flat twine, slightly rough, with a fibrous edge.
- Feel. Dry, slightly stiff, fibrous edges. The cheapest feel of the three.
- Knots. Holds well. The edges grip each other inside the knot.
- Abrasion. Moderate. The flat profile means wear concentrates at the edges of the film.
- Cost. Lowest of the three. The standard for packing, baling and agricultural tying where price is the deciding factor.
- Typical products. PP split-film packing twine, baler twine.
Monofilament
A single round filament of PP or PE, extruded as a continuous thread. The PE version is the global standard for fishing and aquaculture; the PP version is used where a stiffer or cheaper product is acceptable.
- Feel. Smooth, slightly waxy (PE) or harder (PP). Slides easily through fingers.
- Knots. Reliable. PE monofilament knots hold without backing in most applications.
- Abrasion. High — the round profile distributes wear evenly.
- Cost. Higher than split film. PE is the standard fishing twine.
- Typical products. PE monofilament fishing twine, PP monofilament industrial twine.
Multifilament
Many fine filaments twisted together to form a single yarn. Softer and more flexible than the other two, with a smooth fabric-like feel.
- Feel. Soft, smooth, comfortable. Kind to hands over a long working day.
- Knots. Holds well, but can slip in a poorly dressed knot.
- Abrasion. Moderate. The fine filaments wear individually but the bundle still works.
- Cost. Higher than split film and monofilament. The premium choice for hand-feel applications.
- Typical products. PP/PE multifilament for crop tying, packaging, decorative and craft use.
Choosing between them
- Packing and baling, price-driven. Split film.
- Fishing, net repair, aquaculture, abrasion-driven. Monofilament (PE for the standard, PP for the budget option).
- Crop tying, hand-feel-driven, decorative. Multifilament.
When the buyer does not specify the yarn form, the supplier will assume the default for the application. To compare two quotations fairly, confirm the yarn form on both — the same m/kg in split film and in multifilament is a different product.