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US 2003/0208993 A1Published application
Installation for packaging liquid doses in sealed bags and use thereof
OwnerEtienne Susiniinventor
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OwnerEtienne Susiniinventor
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The invention concerns an installation for packaging liquid doses in sealed bags produced from a longitudinally open blown tubing, comprising a vertical frame, means for moving along said blown tubing, a pipe supplying said liquid, means for welding said opening, means for welding the opposite edges of said tubing beneath the end of said pipe and cutting means. A first welding and cutting station is arranged on either side of said pipe, to provide first weld seams and cuts, a second welding and cutting station is arranged beneath the end of said pipe to provide first weld seams and cuts, a second welding and cutting station is arranged beneath the end of said pipe to produce transverse weld seams to link the two adjacent ends of the first weld seams located on either side of said feeding pipe of two adjacent pairs of said first weld seams and to form cut-outs.
An installation for packaging doses of liquid in sealed bags produced from a sheath (G) of a heat-sealable flexible material, open longitudinally, comprising a vertical framework (B) comprising means (50, 51, 74-77) for causing this sheath (G) to pass downward, a feed pipe (41) for said liquid entering said sheath (G) through said longitudinal opening, means (38, 39) for welding said longitudinal opening below the passage for said feed pipe (41) through said longitudinal opening, transverse welding means (68) for connecting the opposite longitudinal edges of said sheath (G) under the dispensing end of said feed pipe (41), and cutting means (42, 43, 72, 73) for separating the bags containing said doses from said sheath, characterized in that this installation comprises a first welding and cutting station (3), arranged on each side of said feed pipe (41) to form first welds and cuts on the outside of these first welds, a second welding and cutting station (4) below the end of said feed pipe (41) for forming transverse welds for connecting the two adjacent ends of the first welds situated on each side of said feed pipe of two adjacent pairs of said first welds and to form cuts on the outside of said transverse welds.
The installation as claimed in one of the preceding claims, characterized in that the supports (59, 60) of the cutting and welding means (69, 73) of said second welding and cutting station (4) situated on one side of said sheath (G) and the supports (61, 62) of the cutting and welding means (68, 72) of this same welding and cutting station (4) situated on the other side of said sheath (G) are each secured to an independent actuating member (63-66) for moving the supports (59, 60) arranged on one side of said sheath (G) and those (61, 62) arranged on the other side of this sheath (G) against each other and for parting them, and in that two sliding devices (57, 58) can be moved in two horizontal and mutually parallel paths, each of them being dynamically connected to two of said supports (59, 60, 61, 62) situated on the same side of said sheath (G), and are engaged with drive means (M1-M4) for causing them to slide along said paths, in two opposite directions alternately, so as to alternately place said welding and cutting means respectively, in a determined working position with respect to said sheath (G).
The installation as claimed in one of the preceding claims, characterized in that said welding means (38, 39, 68) consist of pulsed electrical heating means.
The installation as claimed in one of the preceding claims, characterized in that said welding means (68) comprise a mating support (69) associated with cooling means.
An installation for packaging doses of liquid in sealed bags comprising a valve (V) formed by a passage formed between two thermoplastic films arranged inside said sheath at the location of each of said bags, running transversely to said sheath, and a pouch the end wall of which is adjacent to the entry to said passage of the valve (V) as claimed in one of the preceding claims, characterized in that it comprises, upstream of said first welding and cutting station (3), a station (2) for introducing one end of a straw (P) into said passage in the valve (V), this station (2) comprising means (84) for piercing the end wall of said pouch adjacent to the entry to said passage in the valve (V) and means (82) for inserting one end of a straw (P) into the entry of said passage in the valve (V) and the remainder of said straw (P) into said pouch.
The use of the installation as claimed in one of the preceding claims for the packaging, by continuous filling, of said sheath (G) with said liquid at the same time as performing the steps of welding and cutting the periphery of said bags.
Dependencies are inferred from the claim text.