Water Absorption in Monofilament Lines – A Myth or a Real Problem?
Compare the lines
Let’s take a closer look at scientific facts, not advertising slogans!
If your fishing line absorbs water it can reduce your casting distance by at least 10% due to increased weight. It also loses up to 15% of its strength and its lifespan is shortened, as dirt and debris can stick to wet lines more easily.
It’s already 2025, and polymer science has progressed significantly. The chemical industry now offers advanced materials that improve the performance of monofilament lines. But what exactly makes modern lines better? And what distinguishes a standard nylon line from the copolymer lines produced by Katran?
Visually, they look the same. So how do you know what you're really buying?
Trying to figure this out online is even harder. Most websites are full of marketing fluff rather than scientific explanations.
My advice: trust brands that are honest. If a company has a history of misleading its customers, avoid its products. But then how can we make sense of the dozens of lines available on the market? Start with two key things:
So… what’s the secret behind Katran’s success?
The answer is simple: each Katran line series uses a custom copolymer formula, specifically engineered during the design phase, to give the line targeted properties. One of these properties is minimal water absorption.
Most traditional monofilament lines are made from basic nylon, which tends to absorb water and degrade over time when wet. Katran, on the other hand, uses specialized copolymers - high-performance polyamide blends - that are less hydrophilic, meaning they absorb far less water.
This leads to several clear advantages, including:
So… why do other brands mention “fluorocarbon coating”?
Yes, many competitors label their monofilament lines as having a “fluorocarbon coating.” But is that technically even possible?
Let’s be clear: fluorocarbon (PVDF) is insoluble — it cannot be dissolved into any bath or solution to be “coated” onto nylon. The only genuine way to create a monofilament with a fluorocarbon outer layer is through co-extrusion — a complex and expensive process involving multi-layer extrusion with precision machinery. Only a few premium brands can do this properly.
As you can imagine, such a process requires high-end and sophisticated equipment. Therefore, the result is increased manufacturing costs.
So, when you see cheap lines labelled with “fluorocarbon coating,” ask yourself — is that possible?
If your fishing line absorbs water it can reduce your casting distance by at least 10% due to increased weight. It also loses up to 15% of its strength and its lifespan is shortened, as dirt and debris can stick to wet lines more easily.
It’s already 2025, and polymer science has progressed significantly. The chemical industry now offers advanced materials that improve the performance of monofilament lines. But what exactly makes modern lines better? And what distinguishes a standard nylon line from the copolymer lines produced by Katran?
Visually, they look the same. So how do you know what you're really buying?
Trying to figure this out online is even harder. Most websites are full of marketing fluff rather than scientific explanations.
My advice: trust brands that are honest. If a company has a history of misleading its customers, avoid its products. But then how can we make sense of the dozens of lines available on the market? Start with two key things:
- Precision of the declared diameter.
- Accuracy of breaking strain ratings.
So… what’s the secret behind Katran’s success?
The answer is simple: each Katran line series uses a custom copolymer formula, specifically engineered during the design phase, to give the line targeted properties. One of these properties is minimal water absorption.
Most traditional monofilament lines are made from basic nylon, which tends to absorb water and degrade over time when wet. Katran, on the other hand, uses specialized copolymers - high-performance polyamide blends - that are less hydrophilic, meaning they absorb far less water.
This leads to several clear advantages, including:
- Better long-term strength retention
- Stable performance after days of submersion
- Less dirt adhesion
- Consistent knot strength
- Greater abrasion resistance, especially in thinner diameters (e.g. 0.215 mm or 0.234 mm).
So… why do other brands mention “fluorocarbon coating”?
Yes, many competitors label their monofilament lines as having a “fluorocarbon coating.” But is that technically even possible?
Let’s be clear: fluorocarbon (PVDF) is insoluble — it cannot be dissolved into any bath or solution to be “coated” onto nylon. The only genuine way to create a monofilament with a fluorocarbon outer layer is through co-extrusion — a complex and expensive process involving multi-layer extrusion with precision machinery. Only a few premium brands can do this properly.
As you can imagine, such a process requires high-end and sophisticated equipment. Therefore, the result is increased manufacturing costs.
So, when you see cheap lines labelled with “fluorocarbon coating,” ask yourself — is that possible?
Final Thoughts
Thanks to chemical innovation, copolymer technology, and honest manufacturing,
Katran has built a reputation for accurate specs, long-lasting performance, and
superior casting ability.
In a market full of overhyped marketing claims, Katran continues to invest in science,
precision, and angler trust. Choose your fishing line wisely — your experience and
results depend on it.
Thanks to chemical innovation, copolymer technology, and honest manufacturing,
Katran has built a reputation for accurate specs, long-lasting performance, and
superior casting ability.
In a market full of overhyped marketing claims, Katran continues to invest in science,
precision, and angler trust. Choose your fishing line wisely — your experience and
results depend on it.
Vitalii Kremnets
Katran CEO