Procedure for the preparation of leaves with transparent guides of archivers for philatelic and similar uses. (Machine-translation by Google Translate, not legally binding)

摘要

Procedure for the preparation of sheets with transparent guides of filing cabinets for philatelic and similar uses, characterized by a first phase in which, to the previously cut sheets, they are mechanically applied the adhesive substance that must occupy a series of parallel lines of the precise width for that the lower areas of the transparent strips that are applied in a second phase are fastened, with what remains the upper free area of the transparent strips forming a pouch enters its inner face and the surface of the support sheet. In a third phase, each sheet with the transparent adhesive sheets is subjected to the simultaneous pressing and heating step which ensures the hardening of the adhesive, guaranteeing the bonding of the transparent sheet to the backing sheet. For this phase, the sheet with the transparent strips applied passes between the tangent rollers, whose rotation in opposite directions determines the advance of the sheet comprised between them. The speed of rotation of the rollers is variable according to the needs and in the interior of the rollers there are the precise heating resistors so that the combined effect of pressure and temperature is adequate. In a final phase we proceed to the finishing and selection of each sheet. (Machine-translation by Google Translate, not legally binding)