초록 ▼

The first object of the invention is a process for closing or sealing a flexible tube filled with a liquid, creamy or semi-pasty product (7), in which its skirt (2) is nipped below its open end so as to bring about a closure (10) allowing the escape of the air contained in the tube when the latter i

The first object of the invention is a process for closing or sealing a flexible tube filled with a liquid, creamy or semi-pasty product (7), in which its skirt (2) is nipped below its open end so as to bring about a closure (10) allowing the escape of the air contained in the tube when the latter is transversely compressed and then after compression the closure (10) is transformed into a tight closure and the open end (17) of the tube is sealed. According to the invention, skirt (2) is nipped with elastically tightened parallel surfaces (10) and the skirt (2) is compressed to the right of the product contained (7), in such a way that the upper level of said product (7) remains below or at the lower limit of closure (10) and the end portion (17) of the tube (1) passing beyond said closure (10) is sealed, so as to avoid any pollution by the product deteriorating the seal. The second object of the invention is an apparatus for performing this process. The inventive process and apparatus apply to the conditioning of products in the food, cosmetics, pharmaceutical and hygienic fields.

대표청구항 ▼

Process for sealing a flexible tube filled with a creamy or semi-pasty liquid product, comprising the steps of: disposing in an inverted position a tube skirt filled with said product to a predetermined level and open from the top of the tube as inverted; nipping said skirt by elastically tightening

Process for sealing a flexible tube filled with a creamy or semi-pasty liquid product, comprising the steps of: disposing in an inverted position a tube skirt filled with said product to a predetermined level and open from the top of the tube as inverted; nipping said skirt by elastically tightening parallel surfaces above the predetermined level so as to provide an incomplete seal which permits the production of an end portion projecting beyond the incomplete seal at the top of the skirt as inverted, and causes the upper level of the product in the tube to rise and air to escape, said seal being obtained in the absence of an internal pressure; compressing said nipped skirt transversely to a longitudinal axis with respect to the skirt, and remote from the nipped portion, so as to locally reduce the internal cross-section of said skirt, said compression being limited such that the upper level of the product remains at a lower limit of or slightly below said incomplete seal; tightly sealing the end portion projecting beyond the incomplete seal, avoiding any pollution of the skirt by the product leading to a deterioration of said tightly sealed end portion; and removing the compression of said skirt.