Strong Material Vectran
Vectran is so strong even when used as a bottom net!
- The white part is nylon 3/216 strands
- The brown part is Vectran 3/36
- Even though Nylon 210 3/216 tears, Vectran 3/36 does not tear. Why?
*The 3/36 bottle is currently not being manufactured, so please inquire about stock availability.
Comparison table of Vectran’s strength, friction strength and other fibers
Strength comparison table for various materials
| Vectran 9000dr | Dyneema 4800dr | polyethylene 7200dr | nylon 7560dr | |
|---|---|---|---|---|
| diameter(m/m) | 1.31 | 1.13 | 1.47 | 1.26 |
| weight(g/m) | 1.10 | 0.60 | 0.89 | 0.94 |
| Wet tensile strength(kg) | 148 | 85 | 35 | 46 |
| Wet tensile elongation(％) | 9.4 | 11.2 | 28.4 | 41.3 |
| Wet knot strength(kg) | 59 | 41 | 24 | 23 |
| Dry tensile strength(kg) | 153 | 74 | 35 | 49 |
| Dry tensile elongation(％) | 9.0 | 10.6 | 32.6 | 36.7 |
| Wet twisting wear (times/1kg load) | 421 | 295 | 73 | 61 |
| Wet twisting wear (times/3kg load) | 46 | 22 | 5 | 3 |
| Wet twisting wear (times/5kg load) | 13 | 10 | 2 | 2 |
| Dry torsional wear (times/1kg load) | 55 | 15 | – | 13 |
| Dry torsional wear (times/3kg load) | 22 | 10 | – | 5 |
Torsional wear is n=1
Captain Matsunami talks about the benefits of operating for about 60 days
- It has the same strength as polyethylene thread that is 1/2 or 2/5 the thickness.
- Vectran thread is a net made from polyethylene thread that is 1/2 to 2/5 the thickness of polyethylene thread, and will not break even when dragged through stone.
- Its specific gravity is over 1.4, so when used in a bottom net it fits snugly to the seabed.
- It has strong frictional strength, so the knots will not rub even after 60 days of use.
- Since the thickness of the thread is 1/2 to 2/5, the overall volume of the net is smaller, making it easy to operate even for an elderly person.
- Since the net does not tear, repair time is saved.
- Because the nets are strong, it has been possible to develop new fishing grounds in rough rapids.
- During operation, the line is small in thickness, so the ships can move quickly.
- Since there is little misalignment of the joints and no expansion or contraction, the shape of the bottom trawl net does not change, which has resulted in an increase in the catch.
- If you use a fishing rod to catch fish, the fish will live.
- Overall, the number of operation days has increased, which has led to improved productivity.
Reduces adhesion of sticky substances on the seabed
By applying a special resin coating to Vectran fishing nets, they are less likely to become susceptible to sticky substances found on the seabed.
—-Results of fishing net adhesion substances—-
What kind of substance is sticky? The results of analysis by the Oita Prefecture Takada Shallow Water Fisheries Experiment Station are as follows.
Observer: Tamori Hiroshige, Chief Researcher, Shallow Sea Research Institute, Oita Prefectural Marine Fisheries Research Center
Observation method: The sample was placed on a slide glass, dissected in a small amount of seawater using a dissecting needle, and observed under an optical microscope.
Observation results: The observation results are shown below.
In terms of structure, it was observed that a viscous substance surrounded the fibrous material, with fine sand grains and diatom shells entangled within it to form a conglomerate. The sessile diatoms and protozoa are thought to have attached after the conglomerate formed. In terms of quantity, the order of the numbers in the table was the most abundant.
Observation results of materials attached to fishing nets:
- Mucus
- Fibrous materials
- Fine sand grains
- Attached diatoms (microcells)
- Planktonic diatom shells
- Protozoa
- Crustacean plankton shell
Note: The quantities are greatest in the order of the numbers.
