Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
  • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
  • B65B61/20—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for adding cards, coupons or other inserts to package contents
  • B65B61/22—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for adding cards, coupons or other inserts to package contents for placing protecting sheets, plugs, or wads over contents, e.g. cotton-wool in bottles of pills
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
  • B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
  • B65B1/02—Machines characterised by the incorporation of means for making the containers or receptacles

Definitions

• the purpose of the present invention is to utilize the advantages achievable by the air cushion arrangement even more economically than before and to make it possible to produce bags with improved properties.
• a first object of the present inventions is fertil a process for producing filled with flowable good and formed as an air cushion bags, wherein the bags' through a number of work stations in which they as prepared on one side open container filled in this state, partially and wherein this operation at the same time or after the filling of the container incoherent with ⁇ Good are then closed at its open edge, characterized in that the container to enlarge its volume of air, are brought into a progressive operation in the open state, before, is carried out.
• Another object of the invention is a production system for closed bags produced according to the method of claim 1, partially filled with a pourable product, and designed as an air cushion, with a turntable and at the edge the same successive, passed through work stations, characterized in that it has a roll-off station in which a continuous strip, folded along its center line in two adjacent halves or a pair of adjacent strips of flexible material, are rolled off, and a number of preparation stations in which operations the strip itself is carried out, a transfer station in which containers separated from the strip and closed on three sides are transferred to the rotary table, a number of workstations which are passed through the containers held on the rotary table by means of pliers, and a smoothing station, from which the closed bags arriving from the turntable are transferred to a conveyor belt in a tile arrangement.
• the bag obtained by said method is also the subject of the invention.
• a strip 1 is rolled off a spool 2.
• the strip preferably consists of a double tape with one side made of thin polyethylene film and one side made of aluminum, although this composition is given here purely as an example.
• the strip 1 is gradually drawn, by means which will be mentioned later, through three preparation stations, which stations consist of a device 3 for longitudinally folding the strip 1, a welding station 4 and a cutting station 5.
• the strip 1 becomes elongated
• the center line between the fixed elements 6 and 7 is folded into two adjacent halves, whereby it is brought from the horizontal to the vertical position.
• the welding station 4 consists of two pairs of heatable, profiled stamps 8 and 9, which are arranged in pairs on both sides of the folded strip 1 and at a distance corresponding to the width of a bag.
• the cutting station 5 consists of two scissors 10 and 11 which are spaced apart from one another by the width of a bag.
• the feed of the strip 1 is accomplished by a pulling device 12, which comprises a sucker 13, air connection means 14, and controllable feed means 15, which carry the sucker 12.
• the feed device 15 is actuated by drive means (not shown) and moves in the direction of the rotary table 16. each by a distance that corresponds twice to the width of a bag.
• the strip 1 is thus rolled off step by step and passed through the preparation stations 3, 4 and 5.
• the devices 4 and 5 are actuated, so that the strip is divided by the welded zones 18 into individual bags 17, which are then separated from one another.
• the bags are gripped in pairs with pliers, not shown, on the turntable 16 at the upper end of the weld seams 18.
• Each pair of bags is then also guided step by step along the periphery of the table 16 and passes through the various work stations.
• the opening station 19 and a filling station 20 are shown in the drawing. However, these two stations could be combined into a single station.
• An important step of the method described here takes place in station 19, namely lent the opening of the bags. As a result, the air volume inside the bag is increased, which enables the formation of an air cushion with a maximum volume.
• the bags should be opened quickly, but avoiding bumps that could damage the bags.
• the pliers shown here by arrows 21, which clamp the bag 17 on the rotary table 16, are brought closer.
• the filling station 20 is provided in such a way that the opened bag located in this station comes to lie below a funnel 23, through which the filling material is input.
• the contents can be made, for example, from soluble coffee powder, broth, icing sugar, broth, etc. consist.
• the bag is then transferred by rotation of the table 16 to the next work station 24, where it is sealed at its upper edge. It is then released from the pliers and placed on a conveyor belt 25 and welded at its upper edge.
• the bag which is designed as an air cushion, is somewhat spherical and it has proven advantageous to subject it to a smoothing process.
• the bags fall, like roof tiles, from the welding station 24 onto the removal belt 25 and are carried out for the purpose of "smoothing" between two axially parallel rollers 26 and 27 covered with foam rubber. It has proven to be advantageous to compensate the bags before smoothing them Shake the distribution of the filling material. This can be done by subjecting the conveyor belt 25 itself to a vibration movement on the route in front of the smoothing station.
• the pressure element 22 was shown as a plunger guided from bottom to top. However, this element could also be designed as a cam gear. It would also be possible to open the bag by other means. So one could insert an umbrella-like, elongated element into the container, open it and close it again, the container being gradually brought into the open state and remaining. The bags could also be brought into the open state under the action of a gas or air flow. In this case, a punch equipped with nozzles would be in inserted each container through the open side, this punch being connected to a pressure source. Conversely, it would also be possible to pull from the outside by means of elongated suction devices, which are attached to the center line of both sides of the bag, in order to bring each of the two sides into a triangular position.
• the station 19 When using the variants mentioned, the station 19 must be arranged separately from the station 20.
• Variants allow bags to be made from a single folded or two adjacent strips 1 and contain a metered volume of air, the tightness and strength of the welds or the seals being ensured in such a way that the closed bag is kicked with the feet can without being damaged.
• the shelf life of the product packed in this way is ensured and the space required for the individual bags is reduced calibrated so that they can then be packaged in groups in soft packs made of transparent, synthetic conveying material and prepared for sale.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Containers And Plastic Fillers For Packaging (AREA)
• Auxiliary Devices For And Details Of Packaging Control (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=4241329

Family Applications (1)

Country Status (2)

Citations (7)

• 1987
  • 1987-07-22 CH CH277587A patent/CH673989A5/de not_active IP Right Cessation
• 1988
  • 1988-07-15 WO PCT/CH1988/000124 patent/WO1989000529A1/de unknown

Patent Citations (7)

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