Consists of the transparent plastic make glass window and the said glass window the soundproof wall

摘要

PURPOSE: To enhance an effect for wild-bird protection without damaging environment by a method wherein yarns made of plastic of high contrast monofilaments are disposed at the internal part of a window pane made of transparent plastic. ;CONSTITUTION: Threads 2 made of plastic of high contract monofilaments are disposed at the internal part of a window pane 1 made of transparent plastic, and broken pieces produced when window pane 1 is broken are substantially held. It is desirable that the threads 2 are dyed in a black and it is preferable that the yarn has a size in the range of 1-5 mm. Further, it is preferable that the thickness of the window glass 1 is within the range of 1.8-2.5 mm. Further, when the threads 2 is horizontally stretched, it is preferable that a distance between the threads 2 is 50 mm or less, and surface density of the yarn 2 is 5-25%. Further, when the threads 2 is vertically stretched, it is preferable that a distance between the threads 2 is 100 mm, and surface density of the threads 2 is 2.5-20%. Further, the thickness of the window pane 1 may be within the range of 4-40 mm, preferably 12-25 mm.;COPYRIGHT: (C)1993,JPO