When first manufactured in 1907, Hershey's Kisses were wrapped by hand.
In 1921, a machine was used so the Kisses would be wrapped automatically.
This machinery also added the paper plume or paper strip flag to the aluminum foil wrapper to identify Hershey's Kisses, replacing the original small square of printed tissue that was inside the foil wrapper.

In 1924, Milton S. Hershey received a registered design trademark (Reg.
0186828) for "foil wrapped conical configuration with plume" which included the paper plume sticking out from the top of the aluminum foil wrapper.
In 1976, Hershey received a registered trademark for the Hershey's Kisses foil wrapper.

During 1942, production of Hershey's Kisses was briefly interrupted due to the rationing of aluminum foil.
Instead, the machines were re-purposed to create military chocolate D ration bars for the soldiers in World War II.
According to military historians, these chocolate D rations served two purposes: as a morale boost, and as a high-energy, pocket-sized emergency ration.
The ingredients of these four-ounce bars were a blend of chocolate, sugar, cocoa butter, skim milk powder, and oat flour, containing 600 calories.
The specification for the D ration chocolate bars was that it had to taste "a little better than a boiled potato" so troops would only use them for emergencies.
By the end of World War II, Hershey's had produced more than 3 billion D ration chocolate bars.
When first manufactured in 1907, Hershey's Kisses were wrapped by hand. In 1921, a machine was used so the Kisses would be wrapped automatically. This machinery also added the paper plume or paper strip flag to the aluminum foil wrapper to identify Hershey's Kisses, replacing the original small square of printed tissue that was inside the foil wrapper. 
In 1924, Milton S. Hershey received a registered design trademark (Reg. 0186828) for "foil wrapped conical configuration with plume" which included the paper plume sticking out from the top of the aluminum foil wrapper. In 1976, Hershey received a registered trademark for the Hershey's Kisses foil wrapper.
During 1942, production of Hershey's Kisses was briefly interrupted due to the rationing of aluminum foil. Instead, the machines were re-purposed to create military chocolate D ration bars for the soldiers in World War II. According to military historians, these chocolate D rations served two purposes: as a morale boost, and as a high-energy, pocket-sized emergency ration. The ingredients of these four-ounce bars were a blend of chocolate, sugar, cocoa butter, skim milk powder, and oat flour, containing 600 calories. The specification for the D ration chocolate bars was that it had to taste "a little better than a boiled potato" so troops would only use them for emergencies. By the end of World War II, Hershey's had produced more than 3 billion D ration chocolate bars.
Hershey's Kisses