| 摘要 |
A continuous blank letter form (1) is composed of letters (2) to which letter form adhesive tracks (10) are provided for closure of the letters. The adhesive tracks are of cold-adhesive material so that the letter 2 can be closed by pressing the adhesive tracks together without heat process or moistening. The adhesive tracks are set onto successive letters of the continuous form, laterally moved within zones 8,9 so that they do not adhere together in a continuous form stack, or in a stack when detached as separate individual letters 2, but upon folding into an individual letter, the letter closes tightly together. The tracks 10 are laterally displaced in alternate letters 2. <IMAGE> |
