JPS6113037B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The purpose of the present invention is to provide a new waterproof sheet mainly used for waterproofing floors, walls, etc. on rooftops, roofs, etc. A core material obtained by stacking the warp yarn groups arranged horizontally at intervals and the weft yarn groups arranged in the same way in a vertical arrangement to form a checkerboard pattern, and adhesively fixing the intersection points with a binder. The gist is that the rubber and non-vulcanized rubber or vulcanized rubber are integrated into a laminated sheet.

Conventionally, sheets of this kind have been known that use a core material obtained by arranging round threads made of fibers in a checkerboard shape, but in these sheets, the core material is round threads. Because of this, it is thick, and because of its roughness, the intersections of the circular threads form irregularities with large drops that are inconvenient for construction, resulting in undesirable defects.

The present invention attempts to solve the above-mentioned defects by employing a checkerboard-shaped core material made of split yarn.That is, as described above, thin split yarn is torn into long strips, and the flat yarns are laid down at intervals. A core material and non-vulcanized rubber or vulcanized rubber obtained by stacking warp yarn groups arranged in the same manner and weft yarn groups arranged in the same manner as above to form a checkerboard pattern, and adhesively fixing the intersection points with a binder. The core material is much thinner than the round yarn core material described above, and the entanglement between the unevenness is much thinner, and the drop between the unevenness is much smaller. At the same time, it has the effect of effectively solving the above-mentioned defects.

In the first embodiment shown in Figs. 1 and 2, a first group of warp threads made of flat yarns made by tearing thin split yarns into long thin strips are arranged in a lying state with intervals, and two groups of weft threads arranged in the same way are stacked in a vertical arrangement. Non-cooling rubber layers 4, 4' are formed on both upper and lower surfaces of a core material 3 obtained by forming a grid pattern and fixing the intersection points with a binder.
are combined into a laminated sheet, and a release sheet 5, 5' is releasably attached to the outer surface of each non-vulcanized rubber layer 4, 4'. In the second embodiment shown in FIG. 1, a rubber layer 4 is combined on one side of a core material 3, and a release sheet 5 is attached to this rubber layer 4.

The rubber layers 4, 4' according to the invention can also be implemented as vulcanized rubber layers.

[Brief explanation of drawings]

The figures show an embodiment of the waterproof sheet of the present invention, and FIG. 1 is an enlarged perspective view of a part of the first embodiment;
2 is a sectional view taken along line A-A in FIG. 1, FIG. 3 is an enlarged perspective view of a portion of the second embodiment, and FIG.
It is a sectional view taken along line B-B in the figure. 1... warp, 2... weft, 3... core material, 4,
4'...Rubber layer, 5,5'...Release sheet.

Claims (1)

[Claims] 1 A flat system made by tearing thin split yarn into long thin strips is arranged in a lying state with intervals between the warp threads and the weft threads arranged in the same way are layered in a vertical arrangement to form a checkerboard pattern, and the intersections are glued and fixed with a binder. A waterproof sheet characterized by integrating the obtained core material and unvulcanized rubber or vulcanized rubber into a laminated sheet.