JP2015202893A - filling and packaging machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent biting of a packaging film by the content in conducting lateral sealing and inclusion of oxygen within the packaging film, a cause of oxidation of the content, in a filling and packaging machine.SOLUTION: A cylindrical film is filled with an inert gas to a position to be sealed laterally by an inert gas filling mechanism and then with a content before the position to be sealed laterally by a content filling mechanism and sealed laterally after stopping the discharge of the content from the content filling mechanism.

Description

  TECHNICAL FIELD The present invention relates to an apparatus for filling a packaging film formed into a cylindrical shape and packaging the contents.

  Conventionally, a continuous long film for packaging is folded in half and heat-sealed at the edges to form a cylindrical film, which is then heat-sealed to the bottom of the bag, and the contents are placed there. 2. Description of the Related Art Filling and packaging machines are known that continuously produce sealed packaging bags by filling and then laterally sealing again to form the bottom for the next filling while sealing the filled contents.

JP-A-8-48301

  However, in this filling and packaging machine, if the horizontal sealing is performed so as not to bite the contents into the film, the contents will inevitably be packaged together with air, which may cause the problem of quality deterioration due to oxidation. Become. On the other hand, if the horizontal sealing is performed so that air does not enter, the contents are inevitably bitten into the film, and the sealing strength is weakened. Even in such a case, there has been a problem that the choice of packaging film is narrowed so that the sealing strength does not become weak.

  The present invention has been made in view of the above circumstances, and does not bite the contents into the packaging film when laterally sealing, and does not trap oxygen that causes oxidation of the contents in the packaging film. The purpose is to provide a packaging machine.

  A filling and packaging machine according to the present invention includes a film transport mechanism for transporting a cylindrically formed packaging film in a longitudinal direction, a content filling mechanism for filling the tubular film with a liquid content, and a non-conformity to the tubular film. A filling and packaging machine comprising: an inert gas filling mechanism that fills an active gas; and a sealing mechanism that hermetically wraps the contents filled by sealing the cylindrical film at predetermined intervals in the lateral direction, The inert gas filling mechanism fills the cylindrical film to the position where it will be horizontally sealed, and then the contents filling mechanism fills the contents just before the position where the cylindrical film will be horizontally sealed. Then, after the discharge of the content from the content filling mechanism is stopped, the horizontal sealing is performed.

  The “horizontal” of the “horizontal seal” is a direction intersecting with the direction of transporting the packaging film. The direction in which the packaging film is transferred is “vertical”, and a bag-shaped packaging film is formed by “vertically sealing” the edge of the planar packaging film.

  “Before the position where horizontal sealing is scheduled” refers to a position closer to the bottom than the position where horizontal sealing is planned this time, when the last horizontal sealing is the bottom of the tubular film.

  “Inert gas” refers to a gas that does not readily chemically react with the contents, and is generally nitrogen or carbon dioxide.

  “Contents” are liquids such as soy sauce, sauce, oil, mayonnaise, cosmetic milk, and cosmetic cream.

  In addition, the filling and packaging machine according to the present invention includes a film transport mechanism that transports a cylindrically formed packaging film in a longitudinal direction, a content filling mechanism that fills the cylindrical film with a liquid content, and the cylindrical film. An inert gas filling mechanism for filling the container with an inert gas, and a sealing mechanism for hermetically wrapping the contents filled by sealing the cylindrical film at predetermined intervals in the lateral direction. The contents filling mechanism fills the contents up to the position where the cylindrical film is to be laterally sealed, stops the discharge of the contents from the filling mechanism, and then turns the inert gas into the cylinder by the inert gas filling mechanism. The film is filled up to a position where it will be laterally sealed, and then laterally sealed.

  In addition, the filling and packaging machine according to the present invention includes a film transport mechanism that transports a cylindrically formed packaging film in a longitudinal direction, a content filling mechanism that fills the cylindrical film with a liquid content, and the cylindrical film. An inert gas filling mechanism for filling the container with an inert gas, and a sealing mechanism for hermetically wrapping the contents filled by sealing the cylindrical film at predetermined intervals in the lateral direction. In addition, an inert gas filling mechanism outlet is provided at a position far from the distance to the discharge port of the content filling mechanism with respect to the position at which the sealing mechanism performs horizontal sealing, and the liquid level of the contents is The contents are filled while the packaging film is transported in the vertical direction by controlling so as to be in between, and after filling a predetermined amount of contents, the discharge of the contents is stopped, while the inert gas is discharged from the outlet. Always erupting , Characterized by transverse sealing after the liquid level has transferred the packaging film to a below horizontal sealing position.

  According to the present invention, the filling of the content is stopped, and the lateral sealing is performed at a position where the content does not exist. Therefore, the content can be packaged without biting the content into the film. Moreover, since it is the inert gas that is packaged together with the contents by the horizontal seal, the contents can be packaged without trapping oxygen that causes oxidation of the contents in the packaging bag.

  Further, according to the present invention, since the discharge outlet of the contents is below the liquid level of the contents, the liquid as the contents does not foam when filling the contents, and the inert gas Since the jet outlet is above the liquid level, it can be filled with an inert gas without foaming the contents. As a result, lateral sealing can be performed without biting the contents.

It is a perspective view which shows the packaging film, filling mechanism, and sealing mechanism part of the filling packaging machine which is an example of embodiment of this invention. It is a perspective view which shows the bottom part of the packaging film of the filling packaging machine which is an example of embodiment of this invention, the discharge port of a content filling mechanism, and the jet nozzle of an inert gas filling mechanism.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a perspective view showing a filling and packaging machine as an example of an embodiment of the present invention. Only the packaging film, the filling mechanism, and the sealing mechanism are shown so that the drawing does not become complicated.

  The packaging film accommodated in a roll shape is drawn out and transferred by a film transfer mechanism not shown in FIG. Then, it is folded in half so as to wrap the inert gas filling pipe 2a and the content filling pipe 3a, and the edge is heat sealed by a vertical sealing mechanism to form a cylinder.

  In FIG. 1, only one side is vertically sealed, but the crease part may also be vertically sealed and formed into a cylindrical shape with both sides vertically sealed. Further, instead of folding one wrapping film in half, two wrapping films may be stacked and the edges thereof may be vertically sealed to form a cylinder.

  The vertical sealing mechanism is configured such that rollers facing each other with the packaging film sandwiched can be heated by an electric heater, and the packaging film can be continuously heat sealed by applying pressure while heating by the roller.

  In the place where the contents and the inert gas are filled, the contents filling pipe 3a and the inert gas filling pipe 2a are formed downward so that the filled contents do not spill, and the packaging film 1a is formed in a cylindrical shape. Is transported downward.

  After the cylindrical packaging film is filled with the contents and the inert gas, the cylindrical packaging film is heat-sealed horizontally at predetermined intervals by a horizontal sealing mechanism. By this horizontal sealing, the filled contents are hermetically packaged, and the bottom of the cylindrical packaging film for filling the contents next is formed.

  The horizontal sealing mechanism is configured such that two pressure plates facing each other with the packaging film interposed therebetween can be heated with an electric heater, and the packaging film can be heat sealed by applying pressure while heating.

  After the horizontal sealing, the laterally sealed portion is separated by a cutting mechanism not shown in FIG. 1 and separated into individual packages.

  The operation of each mechanism is controlled by a control computer via a sensor and a driving device.

  The inert gas filling mechanism 2 has a flow meter connected to a control computer in the middle of which an inert gas filling pipe 2a is connected to a tank in which inert gas is stored at a pressure higher than atmospheric pressure. And an electromagnetic valve. In accordance with the control program, the filling speed, filling time, filling amount, and filling timing are controlled.

  The content filling mechanism 3 is configured such that a content filling pipe 3a is connected to a content storage tank, and a flow meter and an electric pump connected to a control computer are mounted in the middle. In accordance with the control program, the filling speed, filling time, filling amount, and filling timing are controlled.

  In the film transfer mechanism, a motor with a sensor for measuring a transfer distance and a roller for sending a film is connected to a control computer, and the transfer speed, transfer stop, and transfer start are controlled according to a control program. Control is performed according to the location of the film.For example, in the vicinity where the contents are filled and laterally sealed, control to stop or start film transfer in conjunction with the state of filling and the timing of the lateral seal is performed. Do. On the other hand, at the place where the packaging film is drawn from the roll, the film is transferred at a constant speed that matches the average transfer speed in the vicinity where the contents are filled. This is because it is more efficient to transfer at a constant speed because the inertia of the film roll is large. Since the film is connected as a whole, a buffering mechanism is incorporated between sections with different control procedures to absorb the difference in transport speed between the front and rear while maintaining tension so that the film does not loosen. .

  In the horizontal seal mechanism 5, an electric heater for heating the pressure plate and an actuator for driving the pressure plate are connected to a control computer, and the horizontal seal is controlled in conjunction with the film transfer mechanism. That is, after the film is transferred a predetermined distance after the previous horizontal seal, the film transfer is stopped and the horizontal seal is performed.

  The control procedure from filling of contents to horizontal sealing will be described in more detail.

  After the horizontal sealing is completed, the inert gas is filled into the cylindrically formed packaging film 1a from the inert gas filling pipe 2a. Then, after filling the inert gas up to the next horizontal sealing position, the ejection of the inert gas is stopped, and the contents are discharged from the contents filling pipe 3a to fill the cylindrically formed packaging film 1a. .

  While the contents are filled, the packaging film formed into a cylindrical shape is transferred by the film transfer mechanism. As the contents are filled from the bottom of the cylindrical packaging film, the inert gas previously filled is filled while being pushed out from the top of the cylindrical packaging film, and external air is filled into the cylinder. Will not be taken into the packaging film.

  Then, after filling a predetermined amount of the content, the discharge of the content from the content filling pipe 3a is stopped, while the cylindrical packaging film is transferred so that the liquid level of the content is higher than that of the horizontal sealing mechanism 4. Stop at the bottom.

  Then, heat sealing is performed horizontally by the horizontal sealing mechanism 4.

  Control examples different from the above are possible.

  After the horizontal sealing is completed, the contents are discharged from the contents filling pipe 3a to be filled into a cylindrically formed packaging film 1a.

  While the contents are filled, the packaging film formed into a cylindrical shape is transferred by the film transfer mechanism. After filling a predetermined amount of content, the discharge of the content from the content filling pipe 3a is stopped, but the liquid level of the content is lower than the horizontal seal mechanism 4 when the cylindrical packaging film is transferred. It stops when it becomes.

  Then, in the cylindrical packaging film, the space above the liquid level of the contents is filled with the inert gas from the inert gas filling pipe 2a, and the horizontal sealing is performed at a timing at which it is filled to a position higher than the horizontal sealing position. The mechanism 4 is heat-sealed sideways.

  In the case of this control example, it is preferable that the inert gas is continuously ejected during the lateral sealing so that air is not taken into the cylindrical film, and the ejection is stopped after the lateral sealing is completed.

  FIG. 2 is a perspective view showing a bottom portion of a packaging film of a filling and packaging machine as an example of an embodiment of the present invention, a discharge port of a content filling mechanism, and a jet port of an inert gas filling mechanism.

  The contents are hermetically packaged by the horizontal seal 1c of the packaging film performed last, and the horizontal seal 1c is the bottom part of the cylindrical packaging film for filling the contents as it is.

  The discharge port 3b and the jet port 2b are configured so that the distance from the inert gas jet port 2b to the bottom is larger than the distance from the content discharge port 3b to the bottom.

  After the horizontal sealing is completed, the contents are discharged from the discharge port 3b to start filling the cylindrical packaging film. Then, the liquid level 6 of the contents rises according to the filling, but the transfer of the packaging film is started when the liquid level 6 rises from the discharge port 3b, and the liquid level 6 of the contents reaches the discharge port 3b and the inert gas. The transfer speed of the packaging film and the flow rate of the contents are controlled so as to be between the nozzles 2b.

  After filling the specified amount of contents, the discharge of the contents stops, but the transfer of the packaging film continues, and the packaging is performed when the liquid level 6 of the contents falls below the position where the horizontal sealing is scheduled. Stop the film transfer and heat seal the packaging film sideways.

  The ejection of the inert gas is continuously performed without stopping during this period.

  Since the discharge port 3b is in the liquid, it is possible to prevent oxygen from being taken into the liquid in the form of bubbles without air being involved when filling the contents.

  In addition, since the jet outlet 2b is above the liquid level 6, the contents are not bubbled by the ejection of the inert gas, and the bubbles of the contents are bitten into the horizontal seal when performing horizontal sealing. Can be prevented.

DESCRIPTION OF SYMBOLS 1 Packaging film 1a Cylindrical packaging film 1b Contents of which are hermetically packaged 1c Horizontal seal of packaging film 2 Inert gas filling mechanism 2a Inert gas filling pipe 2b Spout 3 Contents filling mechanism 3a Contents filling Pipe 3b Discharge port 4 Vertical seal mechanism 5 Horizontal seal mechanism 6 Liquid level of contents

Claims (3)

A film transport mechanism for transporting a cylindrically formed packaging film in the longitudinal direction, a content filling mechanism for filling the tubular film with a liquid content, and an inert gas for filling the tubular film with an inert gas A filling and packaging machine comprising: a filling mechanism; and a sealing mechanism for hermetically wrapping the contents filled by sealing the tubular film at predetermined intervals in the lateral direction,
The inert gas filling mechanism fills the cylindrical film to the position where it will be horizontally sealed, and then the contents filling mechanism fills the contents just before the position where the cylindrical film will be horizontally sealed. A filling and packaging machine that performs horizontal sealing after stopping the discharge of the contents from the contents filling mechanism. A film transport mechanism for transporting a cylindrically formed packaging film in the longitudinal direction, a content filling mechanism for filling the tubular film with a liquid content, and an inert gas for filling the tubular film with an inert gas A filling and packaging machine comprising: a filling mechanism; and a sealing mechanism for hermetically wrapping the contents filled by sealing the tubular film at predetermined intervals in the lateral direction,
After filling the contents up to the position where the cylindrical film is to be laterally sealed by the contents filling mechanism, and stopping the discharge of the contents from the filling mechanism, the inert gas is filled with the inert gas by the inert film filling mechanism. A filling and packaging machine that fills up to a position where horizontal sealing is to be performed, and then performs horizontal sealing. A film transport mechanism for transporting a cylindrically formed packaging film in the longitudinal direction, a content filling mechanism for filling the tubular film with a liquid content, and an inert gas for filling the tubular film with an inert gas A filling and packaging machine comprising: a filling mechanism; and a sealing mechanism for hermetically wrapping the contents filled by sealing the tubular film at predetermined intervals in the lateral direction,
A jet port of the inert gas filling mechanism is provided at a position farther than the distance to the discharge port of the content filling mechanism with respect to the position where the sealing mechanism is laterally sealed,
Fill the contents while moving the packaging film in the vertical direction by controlling the liquid level of the contents to be between the discharge port and the spout.
After filling a predetermined amount of contents, the discharge of the contents is stopped, while an inert gas is always jetted from the outlet, and the packaging film is transferred until the liquid level is below the horizontal seal position. A filling and packaging machine characterized by rear side sealing.

Images