An insole comprising an absorptive flat paper base panel, and a corrugated paper cover panel covered on the absorptive flat base panel, the corrugated paper cover panel having a plurality of folds and furrows alternatively arranged together and defining with the absorptive flat paper base panel a plurality of ventilation spaces.

BACKGROUND OF THE INVENTION 
The present invention relates to insoles for shoes, and relates more 
particularly to a disposable insole. 
A variety of insoles have been disclosed, and have appeared on the market. 
Exemplars are seen in Taiwan Patent Application No. 84210996 entitled 
"INSOLE WITH FAR-INFRARED EFFECT", Taiwan Patent Application No. 84207737 
entitled "FORCED VENTILATION TYPE INSOLE STRUCTURE", Taiwan Patent 
Application No. 83212978 entitled "VENTILATING INSOLE". These insoles are 
commonly designed to improve ventilation, to absorb sweat, to eliminate 
unpleasant smell, etc. 
SUMMARY OF THE INVENTION 
It is one object of the present invention to provide an insole which is 
disposable. It is another object of the present invention to provide an 
insole which has a renewable top. It is still another object of the 
present invention to provide an insole which can be conveniently adjusted 
to change the thickness. A disposable insole in accordance with the 
present invention can be made in a two-ply structure comprised of a flat 
base panel and a corrugated cover panel, or a multi-ply structure 
comprised of a flat base panel and a stack of corrugated cover panel. In a 
two-ply structure, the corrugated cover panel has folds and furrows 
alternatively arranged together, and defining with the top side of the 
flat base panel a plurality of ventilation spaces. In a multi-ply 
structure, the corrugated cover panels have folds and furrows, and a 
respective tongue at the front end. Through the tongue, the top corrugated 
cover panel can be detached with hand to renew the top of the insole. The 
flat bottom panel maybe added with far-infrared generating stone power to 
eliminate unpleasant smell.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
Referring to FIG. 1, an insole 10 in accordance with the present invention 
is generally comprised of a flat base panel 20, and a corrugated cover 
panel 30 covered on the flat base panel 20. The corrugated cover panel 30 
comprises folds 31 and furrows 32 alternatively arranged together. When 
the corrugated cover panel 30 is covered on the flat base panel 20, a 
plurality of ventilation spaces 33 are defined between the corrugated 
bottom wall 35 of the corrugated cover panel 30 and the top side of the 
flat base panel 20. The flat base panel 20 and the corrugated cover panel 
30 are preferably made from paper material. The flat base panel 20 must be 
made from absorptive material so as to absorb damp or unpleasant smell. 
FIG. 2 shows an alternate form of the present invention. According to this 
alternate form, the insole comprises a flat base panel 20, a corrugated 
cover panel 30, and a plurality of corrugated intermediate panels 30' 
arranged between the bottom wall 35 of the corrugated cover panel 30 and 
the top side of the flat base panel 20. The corrugated cover panel 30 has 
a tongue 34 at the front end. Each of the corrugated intermediate panels 
30' has a tongue 34' at the front end. 
Referring to FIG. 3 and FIG. 1 again, the insole 10 is adapted for putting 
in a shoe 40. When the insole 10 is put in a shoe 40, damp or unpleasant 
smell is allowed to pass through the ventilation spaces 33. When passing 
through the ventilation spaces 33, damp or unpleasant smell is absorbed by 
the flat base panel 20. When the user puts on the shoe 40, the folds 31 
and furrows 32 of the corrugated cover panel 30 define with the sole of 
the user's foot spaces for ventilation. 
Referring to FIG. 2 again, by holding the tongue 34 of the corrugated cover 
panel 30 with the hand, the corrugated cover panel 30 can be detached from 
the insole to renew the top of the insole or to reduce its thickness. 
It is to be understood that the drawings are designed for purposes of 
illustration only, and are not intended as a definition of the limits and 
scope of the invention disclosed.