US 5,845,463 AGranted

Process and device for forming multi-compartment bags and sachets thus obtained

OwnerClaude Henri Henauxinventor

Life of this patent

Estimating the term…

Loading patent…

Abstract

The technical sector of the invention is that of the domain of bag-forming by packaging such as bags and especially sachets, made from flat webs folded and sealed to form bags which are then filled with liquid, pasty or pulverulent product, and closed. A bag-forming line according to the process of the present invention comprises a device for opening a sachet of rectangular shape made by two walls of supple material fast on three sides and constituting at least one bag, such that it comprises at least two suction cups disposed opposite so that they may be placed against each wall of said sachet and adapted to draw thereon, in order to open the walls at the level of the fourth side not fast with said bag; it comprises at least two pairs of said suction cups mounted at the end of arms mobile with respect to fixed guides and forming, between those disposed on the same side and dis-placeable simultaneously, a divergent angle whose aperture is oriented opposite that of the same aperture formed by the arms disposed on the other side.

Claims11

Dependent claims

Process for forming sachets having multiple bags, filled with product, said method comprising:

forming a web of constant and continuous height, made of a supple material with two opposite walls secured to each other at one of the continuous longitudinal edges thereof;
sealing said walls together, perpendicularly to said one of the edges, at given intervals to produce seals defining successive bags whose bottoms are constituted by said one of said continuous edges of the web;
cutting said web along said seals to obtain sachets independent of one another wherein each sachet includes at least two bags;
opening free edges of each bag of each sachet located opposite the respective bottom thereof by two suction cups each engaging a respective wall of each bag and moving said wall away from the wall opposite thereto while maintaining said walls vertically;
filling each bag, thus opened, with a product, and sealing said free edges of the open bag to close and seal each bag,
arranging said suction cups so that for each wall of each bag to be opened a respective suction cup is provided,
simultaneously displacing the suction cups on the opposite walls of the bags away from one another to open the bags of each sachet simultaneously, and
moving the suction cups on each wall of the bags towards one another longitudinally while the suction cups engaging the opposite walls of the bags are being displaced away from one another to allow the suction cups to displace with the walls of the bags as said bags are being opened in order to avoid deformation of the material of said bags.

5 more elements

Dependencies are inferred from the claim text.