To obtain a three-dimensional structure serving as an artificial seaweed bed or an artificial fish-breeding reef which has a simple structure, an improved handleability and excellent organism growth function as a seaweed bed function when especially applied to a small-scale river, pond, lake and marsh and ocean.
(1) The three-dimensional structure comprises a synthetic fiber containing at least partially a modified thermoplastic polyvinyl alcohol and has 0.4-0.98 void index K and 2-50 mm thickness in a woven or knitted fabric obtained by connecting both sides of a ground weave with a connecting yarn. (2) The three-dimensional structure comprises a thermoplastic filamentous material containing at least part of a modified thermoplastic polyvinyl alcohol and has 0.4-0.98 void index K and 2-50 mm thickness in a three-dimensional structure obtained by irregularly entangling a fibrous material. The artificial seaweed bed and the artificial fish-breeding reef are composed of the three-dimensional structure described in (1) or (2).
SAKOBE TADAYUKI
HAZAMA REIICHI
UENOYAMA TAKUYA
JP2004036909A | 2004-02-05 | |||
JP2005117972A | 2005-05-12 | |||
JP2005087138A | 2005-04-07 | |||
JPH0921054A | 1997-01-21 | |||
JPH05148736A | 1993-06-15 | |||
JP2005120528A | 2005-05-12 |
Next Patent: SHEET FOR BLOCK MAT