Package making – Methods – Closing package or filled receptacle
Patent
1995-12-07
1997-10-21
Sipos, John
Package making
Methods
Closing package or filled receptacle
533737, 533742, 533759, 53451, 53551, B65B 5110
Patent
active
056783922
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a residual product removing apparatus.
BACKGROUND ART
Conventionally, in a process for manufacturing a container for liquid foods such as milk and soft drinks, a web-like packaging material made of a flexible laminated material is supplied to an filling apparatus. In the filling apparatus, the packaging material is formed into a tube, which is filled with a liquid food, and then cut into a brick-shaped container.
In detail, the filling apparatus seals the web-like packaging material in the longitudinal direction to form a tube, and continuously feeds the tube downward. While the tube is fed downward, liquid food is supplied to the tube from its top. Then, the tube is pressed from the both sides thereof by sealing/cutting units so that sealing in the lateral direction is carried out at predetermined intervals.
Subsequently, a laterally sealed portion is cut to form a plurality of rectangular containers each holding a predetermined amount of the liquid food therein, thereby completing the manufacture of containers.
FIG. 1 is a schematic illustration showing a main portion of a conventional filling apparatus. In FIG. 1, section (a) is a schematic illustration showing a forming unit, section (b) is an illustration showing an engaged state of engaging members, and section (c) is an illustration showing a disengaged state of the engaging members.
In this drawing, reference numeral 11 is a tube made of a flexible laminated material and formed by sealing a web-like packaging material in the longitudinal direction. The packaging material is laminated, for example, such that lamination layers thereof will be in the order of a polyethylene layer, an aluminum foil layer, an adhesive layer, a paper material and a polyethylene layer, from inside to outside of a container which will be formed from the packaging material.
The tube 11 is continuously transferred downward, and squeezed and sealed in the lateral direction at predetermined intervals by two sealing/cutting units 14 and 15, thereby forming a strip-shaped seal portion S. While the tube is fed downward, a liquid food 12 is supplied to the tube 11 from its top.
Then, the seal portion S is cut to form a rectangular container 23 filled with a predetermined amount of the liquid food 12. For these operations, both of the sealing/cutting units 14 and 15 have cutting jaws 14a and 15a and heat sealing jaws 14b and 15b.
Moreover, a cutting bar 18 is attached to the forward end of each cutting jaw 14a, 15a while an inductor 19 is attached to the forward end of each heat sealing jaw 14b, 15b. The cutting jaws 14a and 15a and the heat sealing jaws 14b and 15b are advanced to squeeze the tube 11 from both sides thereof for bringing opposing inner faces of the tube 11 in contact with each other and sealing in the lateral direction.
Also, at the center of the cutting jaws 14a and 15a, a flat cutter 21 extending in the lateral direction is disposed to be movable in advancing and retracting directions. The seal portion S is cut at its center when the cutter is advanced. For moving the cutter 21 forward and backward, a cylinder 22 is attached to the backward end of the cutter 21, and an operating fluid is fed to and drained from the cylinder 22 for moving the cutter 21 forward and backward.
Reference numerals 21a and 21b are a pair of forming flaps which are pivotably attached to the cutting jaws 14a and 15a and the heat sealing jaws 14b and 15b for enclosing and guiding the tube 11 and form the tube 11 into a rectangle.
In the drawing, the sealing/cutting unit 14 is in the position of starting the sealing/cutting operation, where the cutting jaw 14a and the heat sealing jaw 14b are advanced to squeeze the tube 11 from both sides thereof for bringing opposing inner faces of the tube 11 in contact with each other.
Then, the sealing/cutting unit 14 moves downward while holding the tube 11 squeezed. While the sealing/cutting unit 14 is moving downward, the inductor 19 disposed at the forward end of the heat sealing jaw 14b, and the
REFERENCES:
patent: 4534818 (1985-08-01), Kreager et al.
patent: 4630429 (1986-12-01), Christine
patent: 4757668 (1988-07-01), Klinkel et al.
patent: 5207049 (1993-05-01), Baruffato et al.
patent: 5403427 (1995-04-01), Wilcox
Kim Gene L.
Sipos John
Tetra Laval Holdings & Finance S.A.
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