Fastening device for fastening edge area of tarpaulins or pond film to bottom portion of plant in artificial pond, has film layers that are arranged between contact surface of rod-shaped clamping portion and contact surface of base

摘要

The fastening device (1) has a shaft-like base (10) for insertion into the bottom portion is extended in a longitudinal direction (L1). A rod-shaped clamping portion is extended in a longitudinal direction (L2), and integrally connected to base. A contact surface of the rod-shaped clamping portion is arranged facing a contact surface of the base, and is located at a distance from one of film layers arranged between the contact surface of the rod-shaped clamping portion and contact surface of the base.