Method and Apparatus for Vacuum Packaging a Product

摘要

A method and apparatus for vacuum packaging a product. According to one embodiment a film tube is generated, and, in the film tube a product (P) is introduced and at least one cut is made. In the method, a vacuum may also applied inside the film tube, and a transverse seal is formed therein, a film tube closed at one end being obtained upstream of the cut and a package closed at both ends being obtained downstream. Furthermore, the film tube is transversely pinched, a portion the inside of the film tube which is isolated from the inside of the rest of the film tube being obtained, and a chamber is demarcated around at least part of said portion, the vacuum being applied and the transverse sealing operation being performed inside said chamber.

主权项

1. A method for vacuum packaging a product located inside a film tube between first and second end portions of the film tube, the film tube transportable from an upstream position to a downstream position, the second end portion being located upstream the first end portion, the film tube having a width, the method comprising:
sealing the first end portion of the film tube, placing the product inside the film tube, placing the second end portion of the film tube inside a chamber so that the second end portion is at least partially isolated from the outside of the chamber, by use of a cutting tool, creating a partial cut in the film tube by cutting the second end portion of the film tube along less than the entire width of the film tube, creating a vacuum in the chamber to extract air from inside the film tube through the partial cut; and by use of the cutting tool, creating a complete cut in the film tube by cutting the second end portion of the film tube along the entire width of the film tube.