Abstract:
Twine and rope have so far been
made of natural fibers for the purpose
of fisheries, agriculture, ships, land
transportation, etc. -
However, the demand for twine and
rope made of natural fibers has decreased
because of the reasons that they are
liable to rot, injure hands while handling
them, they must be dried in the sun
when they got wet and the supply of
natural fibers is on the decrease. In
addition, the recent rapid development
of petrochemistry has caused the twine
and rope to be made from such plastic
matters as nylon, polyethylene, polypropylene
and the like. In contrast with
natural fibers, these chemical products
have conspicuously reduced the liability
to rot and improved various other
defects. As a result, light, strong and
handy plastic filament twine and rope
have come to be produced both in
Japan and in other countries.