Plug In Can

A completely new aerosol system


This piece is called a “stabilizer” it removes the need of a mounting/valve cup.
The stabilizer serves as the upper-valve housing, the rest of the valve is mounted accordingly as usual, so the stabilizer is a part of the valve containing stem, gasket, spring and under valve housing. This part is pushed into the can with a force of 900 newton and 12,5mm. This creates a tight seal against the can.  (There is also a version with an O-ring seal for higher pressures.)  It also works as normal with open can filling. It also has filling benefits and removes the need of the complex crimping station on the filling plant. 

Instead of the expensive aluminium or tinplate disc, now a stabilizer made of  PA 6.6 is used. The construction of the
inner parts such as the stem, steam seal, and spring is identical to standard valves.

Aluminum & PET Aerosol Cans

The specially-designed aluminium  cans are tailor-made and look slightly different to traditional aerosol cans, but the machinery needed to produce them is the same. The only difference is a different necking process. Any can manufacturer can produce these cans. Same necking is also applicable to PET Aerosol cans.


Video demonstrates early pressure and leakage test
at Kao Laboratories in Darmstadt, Germany. The cans where filled with hairspray and then pressurized. Water bath is 55 degrees C.


This novel system for valve aerosol cans simplifies the closing process without significantly affecting the functionality. A conventional valve system comprises a valve plate, an inner elastic ring, located around the tube, and an outer rubber ring, which rests on the edge of the housing. 

The system consists of a stabilizer, which already includes tubes and plastic housing. The valve plate and the seals are replaced by the stabilizer. The stabilizer is "shot" into the can by means of a specially developed machine.

At 2.6 g, it is very light and sits completely sealed in the can. This is ensured by the shape of stabilizer which opens in the can by means of internal pressure as well as by the shape of the can and the inwardly facing flange. 

One part is used in place of three items, leading to material and cost savings.
The can may be filled as before and opens up new design approaches.
Jan Ohlinder from Purple Holding with the German packaging Award
© Purple Holding AB, All rights reserved.
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