| 摘要 |
An improved booklet of the present invention comprises: (a) a cover having a fold which divides the cover into a front cover panel and a rear cover panel wherein each panel has an inner and an outer surface where at least one of said inner surfaces is vinyl treated latex saturated paper substrate; (b) a vinyl sheet heat sealed along three adjacent edges to said surface of said vinyl treated paper substrate thereby forming a pocket between said vinyl sheet and said vinyl treated paper substrate and further leaving one non-sealed edge; and (c) a plurality of leaves each attached along at least one marginal edge to the fold, the leaves forming pages in the booklet.
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