| 摘要 |
A flexible bag (4) that is filled with a product (5) is accommodated in a rigid container (1) and this is welded to the valve unit A, which provides an absolute seal for the container (1) by means of an annular membrane (17) that is pressed into the neck of the container (19) and a double annular rib (19) that is pressed into the annular groove (20) as well as the welding (23) of the closing sleeve (22) to the container (1), the product (5) being forced into the bag (4) and compressed air being forced through the drilled hole (11) of the valve plate (7) into the container (1) by downward pressure on the valve plunger (8), whereupon the valve unit (A) closes the bag (4) and the sealing washer (12), working as a non-return valve, seals the container (1) and avoids any loss of pressure, whereafter, when the valve unit is open, the container pressure compresses the bag (4) so that the product is dispensed through the spray head (14).
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