Transparent bonding material for bonding various articles has majority of openings with synthetic resin layer under them and whole unit is divided by longitudinal and transverse bars, which are spot-welded at the junctions

摘要

It has many openings (6) with synthetic resin layer (10) under them. The openings, which are formed by longitudinal, bars (3) and transverse bars (4) constitute the lattice structure (2) and are spot-welded at junction (5). An even surface layer is also provided at the base.