| 摘要 |
Improved package for fluids which comprises in the inside of a container a compensation chamber (2-12) fixed preferably to the lower zone of the package (1) through its connection to an anti-return valve (3-13) by heat welding if the package (1) is made of plastic material and by means of adhesive or seals if the package is made of a different material; air or another fluid is introduced inside the compensation chamber (2-12) while the content (4-14) of the package (1) is being evacuated, the air or fluid passing to the inside of the compensation chamber (2-12) through the anti-return valve (3-13); the package may optionally have a pressure valve (19) fitted at the extremity opposite to the extremity of the anti-return valve (13) if the package (1) is intended to contain a fluid which can undergo temperature changes. |
