This section is from the "Henley's Twentieth Century Formulas Recipes Processes" encyclopedia, by Norman W. Henley and others.
The simplest way of perfuming printed matter, such as calendars, cards, etc., is to stick them in strongly odorous sachet powder. Although the effect of a strong perfume is obtained thereby, there is a large loss of powder, which clings to the printed matter. Again, there are often little spots which are due to the essential oils added to the powder.
Another way of perfuming, which is used especially in .France for scenting cards and other articles, is to dip them in very strong "extraits d'odeur," leaving them therein for a few days. Then the cards are taken out and laid between filtering paper, whereupon they are pressed vigorously, which causes them not only to dry, but also to remain straight. They remain under strong pressure until completely dry.
Not all cardboard, however, can be subjected to this process, and in its choice one should consider the perfuming operation to be conducted. Nor can the cards be glazed, since spirit dissolves the glaze. It is also preferable to have lithographed text on them, since in the case of ordinary printing the letters often partly disappear or the colors are changed.
For pocket calendars, price lists, and voluminous matter containing more leaves than one, another process is recommended. In a tight closet, which should be lined with tin, so that little air can enter, tables composed of laths are placed on which nets stretched on frames are laid. Cover these nets with tissue paper, and proceed as follows: On the bottom of the closet sprinkle a strongly odorous and reperfumed powder; then cover one net with the printed matter to be perfumed and shove it to the closet on the lath. The next net again receives powder, the following one printed matter, and so on until the closet is filled. After tightly closing the doors, the whole arrangement is left to itself. This process presents another advantage in that all sorts of residues may be employed for scenting, such as the filters of the odors and. infusions, residues of musk, etc. These are simply laid on the nets, and will thus impart their perfume to the printed matter.
Such a scenting powder is produced as follows:
By weight Iris powder, finely ground.........5,000 parts
Residues of musk. . 1,000 parts
Ylang-ylang oil.... 10 parts
Bergamot oil...... 50 parts
Artificial musk .... 2 parts
Ionone...........2 to 5 parts
Tincture of benzoin 100 parts
The powder may subsequently be employed for filling cheap sachets, etc.