JP2007030987A - Packaging method by bagging - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packaging method by bagging capable of sealing an opening mouth end portion of a thin plastic-made bag filled with articles without creases. <P>SOLUTION: While a bag 4 filled with articles is conveyed on a blade conveyor 6, when the opening mouth end portion comes to a position opposed to a sirocco fan 13, air is blown from the sirocco fan 13 toward an opening mouth of the bag 4 so that the opening mouth portion of the bag 4 is opened. Two mouth spreader bars 20 are moved to a position in front of the bag 4 so opened. The mouth spreader bars 20 having an interval between them narrowed are inserted into the bag 4. Then, the mouth spreader bars 20 have the interval widened and then, retreated. Thereby, the mouth portion is spread flat. Narrowing and widening of the mouth spreader bars 20 are rapidly done by cam followers 24 engaging with different cams while moving forward and backward. The opening mouth portion of the bag 4 thus spread flat is pinched and sealed by a sealer 50 without generating the creases and the bag 4 is bundled by a bundler 60. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a bagging and packaging method in which an open end of a thin flexible plastic bag filled with an article is sealed to make a packaged article.

It has already been widely practiced to fill a plastic bag with a product and then seal the open end of the bag to form a packaged product. However, such a packaging method using a bag is practical for packaging using a thin and flexible plastic bag, although it is performed for packaging using a thick and strong plastic bag. The current situation is not.
The reason for this is that after filling a thin plastic bag with a weak waist, and trying to seal the opening, it is extremely easy to seal the opening cleanly without wrinkles because the bag is soft and weak. This is because it is difficult.

For example, a packaged product that is marketed by putting sliced bread, confectionery bread, etc. in a thin plastic bag, the opening of which is not sealed, and the bag opening is squeezed and a plastic clip is fitted Or there are many things which are only wound with a tape or a binding string.
In this way, since the opening is not sealed with a seal in the package made of these thin plastic bags, small insects are invaded by the fragrant scent emitted from the bread and cake bread in the bag, Or there was a risk of dust being mixed in during the distribution process. In particular, if these small insects and dust are attached to the opening end of the bag and the clip or tape of the opening is removed, there is a possibility that those insects and dust may enter the bag.

To avoid the above problems, after putting sliced bread etc. into a thin plastic bag, even if you try to seal the opening, the opening of the bag is weak and does not stand on its side, In this state, it is difficult to seal the opening because it is flat and does not lie down, and even if it is sealed, wrinkles are produced and the commercial value of the packaged product is significantly deteriorated.
Recently, sliced bread was put in a thin plastic bag, and the opening was sealed and then bundled. However, there are many wrinkles on the seal at the opening of the bag, and the wrinkles that occur in the seal Therefore, heating at the time of sealing is not performed uniformly, and the seal part is partially melted and broken, or the seal is insufficient and the opening is open, and there are many defects in the seal of the opening .

  The present invention provides a bag-packing and packaging method capable of sealing the open end of a thin plastic bag filled with a packaged product in a clean and stable state without any wrinkles. The challenge is to do.

  In order to solve the above-mentioned problems, the present invention is directed to two bags that are expanded by blowing air to the opening end of the bag filled with the packaged product on the transfer conveyor, and opening the opening of the opening. After the opening bar is inserted into the opened bag after the cam followers provided on the bar are brought into contact with the cams so that the distance between them is reduced, the cam follower is contacted with a cam different from the cam. Packing the bag so that the widening opening bar is widened by contacting it and the opening of the bag is widened, and then the opening end of the bag is widened and sealed. Provide packaging method.

  According to the packaging method of the present invention, a bag filled with goods is placed on a conveyor and conveyed, and air is blown to the opening end thereof to open the opening of the opening end. In the opening, two wide opening bars are inserted in a state in which the distance between them is narrowed. By opening the wide opening bar to the side, the opening of the bag is expanded to the side. Is flattened with the open end widened sideways. Since the opening of the flattened bag is sealed with a sealer in this way, the opening is neatly sealed without wrinkles and a reliable seal is formed.

In the packaging method according to the present invention, the expansion bar is provided with a cam follower. When the expansion bar moves forward and backward with respect to the opening of the bag, the cam follower is associated with another cam. Since the expansion opening bar is expanded and contracted in the lateral direction, the expansion opening bar is easily and quickly expanded / contracted by the movement of the expansion opening bar to enter / exit the bag opening, so that it is in a collapsed state. Thus, the insertion into the opening of the bag to be performed and the retraction to be performed in the state of being spread laterally can be performed quickly and in a short time, and the bagging and packaging speed can be increased.
Thus, according to the packaging method of the present invention, even if the bag is made of plastic that is extremely thin and weak, the opening is reliably opened, and the opening end of the bag is opened by the expanded opening bar inserted therein. Can be surely sealed in a short time without causing wrinkles by being stretched into a flat state.

In the packaging method according to the present invention, the deaeration member presses the open end of the bag that is spread laterally by the widening opening bar, and the bag and the deaeration member are moved relative to each other by the deaeration member. If the air between the open end of the bag and the filled package is squeezed and discharged and then the bag open end is sealed, no excess air will remain in the sealed bag. This is preferable.
In this case, the relative movement between the bag and the deaeration member for deaeration is carried out by inserting the bag into the bag opening and retreating the widened opening bar and pushing the bag from the bottom. It is preferable that the bag is moved by the above, because the bag to be packaged can be degassed without the need for providing a bag for degassing or a member having a complicated structure for moving the degassing member.

  In the packaging method according to the present invention, the intake pipe is inserted into the opened bag together with the two enlarged opening bars, and the intake pipe sucks in the bag from the inside where the opening is widened by the enlarged opening bar. By discharging the air from the container and degassing it, the end of the opening is sealed to improve the shelf life of the packaged product packaged in the bag.

  Hereinafter, the case where the packaging method according to the present invention is applied to the packaging of sliced bread using a thin plastic bag will be specifically described with reference to the illustrated embodiments. In FIG. 1 which shows the packaging apparatus for enforcing the packaging method by one Embodiment of this invention, 2 is a supply conveyor, This supply conveyor 2 is filled with the slice bread 1 and the slice bread with the opening opened. 1 bag 4 is conveyed from the previous process in the direction of arrow 3 with the opening facing backward. 6 is a blade conveyor serving as a conveyor for carrying and transporting the bag 4 filled with the sliced bread 1, and the bag 4 containing the sliced bread that has been conveyed by the supply conveyor 2 is placed sideways. Transport in the direction.

Reference numeral 7 denotes a guide. The bottom of the bag 4 containing the slice bread 1 conveyed by the supply conveyor 2 is brought into contact with the guide 7 as shown in FIG. 2, and the guide 7 is transferred by the blade conveyor 6. It serves to guide the bag 4 containing bread. Reference numerals 10 and 11 denote endless belt conveyors on which the opening of the bag 4 is placed and conveyed at the same speed as the portion containing the bread 1.
In addition, in order to make the opening of the bag described later smooth in a state where the opening end portion of the bag 4 placed on the belt conveyors 10 and 11 is flattened, the bag 4 It is preferable that a blower 8 for blowing out air for pressing the opening is provided above the belt conveyors 10 and 11.

The belt conveyors 10 and 11 are preferably made of a material such as a silicon belt or a urethane belt that has adhesiveness to a plastic bag (holds a thin plastic bag attached), but is not limited thereto. .
These belt conveyors 10 and 11 are stretched in parallel with a distance from each other and run in the direction of arrow 12 together. The state which looked at the positional relationship of the supply conveyor 2, the blade conveyor 6, the guide 7, and the slice bread containing bag 4 in the position along the AA line of FIG. 1 from the side is shown in FIG.

  Reference numeral 13 denotes a sirocco fan, which is arranged with the air outlet facing the opening of the sliced bread bag 4. When the opening of the bag 4 that is conveyed with the lower surface of the opening end placed on the belt conveyors 10 and 11 comes in front of the sirocco fan 13, the sirocco fan 13 blows air toward the opening. The opening end of the bag 4 serves to open as shown in FIG. Reference numeral 14 shown in FIG. 3 denotes an air cylinder. The air cylinder 14 moves the air blocking member 15 to blow air from the sirocco fan 13 toward the opening of the bag 4 and to block the blowing.

When the opening of the bag 4 is conveyed to a position facing the sirocco fan 13, the air from the sirocco fan 13 that has been stopped by the air blocking member 15 until then is blown toward the opening of the bag 4. . The air cylinder 14 operates the air blocking member 15 so that the air blowing is blocked when the opening action described later on one bag 4 is finished. This prevents the opening of the bag 4 before and after opening from being distorted by air blowing from the sirocco fan 13 and from opening the opening being closed.
At the position where the bag 4 comes in front of the sirocco fan 13 and the air from the sirocco fan 13 is blown toward the opening of the bag 4 so that the opening of the bag 4 is opened, the widening opening bar 20 is It moves sideways as indicated by an arrow 35 and is inserted into the opened bag 4 by blowing air from the sirocco fan 13 as described above. The enlarged opening bar 20 inserted into the bag 4 returns to the C-C position as indicated by the arrow 36 together with the bag 4 while performing the opening operation described later.

Next, the widening bar 20 will be described. The widening bar 20 is a set of two, and as shown in detail in FIG. The spring 23 is pulled at a position below the pivot point 21 between the two. A cam follower 24 is provided at the rear end of the widened opening bar 20, and the cam surface 24 has a cam surface as described later by moving the widened bar 20 forward in the direction of the arrow 25 and backward in the direction of the arrow 26. It is comprised so that it may be moved along.
Reference numeral 28 denotes an air cylinder, and the piston bar 29 is advanced and retracted by the air cylinder 28. A horizontal bar 30 is attached to the tip of the piston bar 29, and an enlarged opening bar 20 is pivotally attached to both ends of the horizontal bar 30 at pivot points 21.

C1 is a forward cam that guides the cam follower 24 when the wide opening bar 20 moves forward in the direction of arrow 25, and C2 is the cam follower 24 that guides the cam follower 24 when the wide opening bar 20 moves backward in the direction of arrow 26. This is a reverse cam.
The reverse cam C2 is a rectangular plate, and the cam follower 24 is guided along both side surfaces thereof. The advancing cam C1 is composed of two parts, one of which is appropriately fixed to the machine frame and the like and does not displace, and the other rotates around the pin 34 at the rear end of the cam part 32. The cam portion 31 is pivotally attached. The cam portion 31 is pulled in the direction of the air cylinder 28 by a spring 33 and is biased so that the end opposite to the pivot point by the pin 34 comes into contact with the side surface of the retreating cam C2.

  Next, the operation of the enlarged opening bar 20 by the cams C1 and C2 will be described with reference to FIG. In FIG. 5, (a) is the position where the enlarged opening bar 20 is retracted, the piston bar 29 is retracted by the air cylinder 28, and the cam follower 24 of the enlarged opening bar 20 is brought into contact with the side surface of the backward cam C2. The enlarged opening bar 20 is in an expanded state. FIG. 5B shows a state where the piston bar 29 is slightly extended from the state of FIG. 5A, and the cam follower 24 rides on the cam portion 31 of the advance cam C1 from the side surface of the reverse cam C2. The opening bar 20 has started to sag. As the piston bar 29 is further extended and the cam follower 24 moves over the cam portion 31, the widened opening bar 20 dents in response to the inclination of the cam portion 31, and the cam follower 24 extends from the cam portion 31 to the cams parallel to each other. If it moves to the part 32, as shown in FIG.5 (c), it will be in the state where the front-end | tip was squeezed. As described above, the widened opening bar 20 that has been advanced in the direction of the arrow 25 in a state in which the tip is narrowed is inserted into the opening of the bag 4 that is opened by blowing air from the sirocco fan 13 as described above. Will be.

  When the piston bar 29 is further extended so that the cam follower 24 disengages beyond the forward cam C1 beyond the mutually parallel cam portions 32 and contacts the side surface of the backward cam C2, the enlarged opening bar 20 is moved by the spring 23 as shown in FIG. ), The tip is opened. As a result, the opening of the bag 4 is expanded laterally. Next, the piston bar 29 is retracted in the direction of the arrow 26, and the enlarged opening bar 20 is retracted as shown in FIG. 5E while the cam follower 24 is in contact with the side surface of the retracting cam C2 and expanded. Returning to the state of a), the opening of the bag 4 is widened and flattened by the above movement. The same operation is repeated thereafter.

When the cam follower 24 moves backward in contact with the side surface of the reverse cam C2, the cam portion 31 of the forward cam C1 is broken around the pin 34 against the urging force of the spring 33 in FIG. As shown in FIG. 6, the valve is revolved by being turned up and moved backward without being affected by the cam portion 31 and in contact with the side surface of the retreat cam C2.
As described above, the cam follower 24 is engaged with separate cams at the time of forward movement and at the time of backward movement, and is necessary for the squeezing operation at the time of insertion into the bag and the lateral opening of the bag opening with respect to the widening opening bar 20. The expansion operation can be performed quickly.

  As described above, the widened opening bar 20 is moved as shown by the arrow 22 by moving the widened bar 20 in the direction of moving forward and backward (directions of arrows 25 and 26) with respect to the opening of the bag 4 containing sliced bread. Scaled and displaced. This widened opening bar 20 is moved in front of the sirocco fan 13 as indicated by an arrow 35 (FIG. 1), and is opened in the bag 4 having the opening wide open in front of the sirocco fan 13 as shown in FIG. 4 (a) while being moved together with the bag 4 as shown by an arrow 36 (FIG. 1) after being inserted with the tip being sunk as shown in FIG. 5 (b) and FIG. 5 (c). 5 (d), the cam follower 24 is displaced in the direction of the arrow 26 while being guided by the surface of the cam C2 in a state where the front end is opened so as to widen the opening of the bag 4 sideways, and is extracted from the bag 4.

  The deaeration member 41 is arranged so as to be moved up and down at the CC position in FIG. 1, and when the deaeration member 41 is lowered, as shown in FIGS. The opening end of the bag 4 flattened by the opening bar 20 is lightly pressed. When the deaeration member 41 is lowered and the widened opening bar 20 whose tip is opened in the state of FIG. 4A is displaced in the direction of the arrow 26 so as to be extracted from the bag 4, the slice bread enters. The bag 4 is pulled in the direction of the arrow 42, and the displacement of the bag 4 causes the stationary deaeration member 41 to exhaust the air contained in the non-filling space 43 in the bag. To do.

  On the other hand, at the position C-C in FIG. 1, an air cylinder 44 is disposed at a position facing the widening opening bar 20, and the push bar 45 expands the bottom of the sliced bread bag 4 by the air cylinder 44. Push toward the opening bar 20. 4, the push bar 45 pushes the bag 4 from the bottom in synchronism with the operation of moving the bag 4 in the direction of the arrow 26 by the opening bar 20, and the bag by the deaeration member 41 described above. 4 facilitates the deaeration operation.

FIG. 6 shows the deaeration operation of the bag 4 by the enlarged opening bar 20, the deaeration member 41, and the push bar 45. FIG. 6A shows a state in which the widened opening bar 20 that has been moved as indicated by the arrow 35 in front of the bag 4 whose opening is opened by the sirocco fan 13 is narrowed. A state of being inserted into the opening of the bag 4 is shown. FIG. 6B shows a state in which the widened opening bar 20 inserted into the opening of the bag 4 is opening the tip. FIG. 6C shows a state in which the widening bar 20 has returned to the CC position in FIG. 1 as indicated by an arrow 36 in the opening of the bag 4 as shown by the arrow 36. While being pulled and opened by the widened opening bar 20, the bottom of the sliced bread bag 4 is pushed toward the widened bar 20 by the push bar 45 pushed out by the air cylinder 44, and this displacement enters the bag 4. The air that has been squeezed out by the deaeration member 41 is extracted from the opening of the bag 4.
FIG. 6 (d) shows a state where the deaeration in the bag 4 is finished, the air cylinder 44 is retracted in the direction of the arrow 26, and the enlarged opening bar 20 is about to come out of the bag 4.

Returning to FIG. 1, reference numeral 50 denotes a sealer, which has an air cylinder 51 for moving the sealer 50 up and down and a sealer receiver 52 as shown in FIG. An endless belt 53 is disposed above the belt conveyor 11 and is conveyed at the same speed in the same direction as the belt conveyor 11. The bag 4 is flattened on the belt conveyors 10, 11 by the enlarged opening bar 20. Is held between the belt conveyor 11 and kept flat during the sealing by the sealer 50.
The sealer 50 and the sealer receptacle 52 have the same speed as that of the bag 4 while the bag 4 is sandwiched and the sealing operation is performed for sealing the opening of the bag 4 being carried on the belt conveyors 10 and 11. The movement is repeated at the same time, the sealing operation is completed, and the bag 4 is completely clamped. At the same time, the operation of returning to the original position is repeated. This type of sealer is known in the art, and a known sealer may be used as appropriate.

  Reference numeral 54 denotes a seal part of the bag. Reference numeral 60 denotes a binding machine which functions to squeeze and bind the sealed portion of the bag 4 whose opening is sealed as described above. Since the binding machine 60 may have an appropriate configuration conventionally used, description of the structure thereof is omitted.

  The illustrated apparatus has the above-described configuration. According to this, the bag 4 filled with sliced bread is sealed and packaged as follows. That is, as shown in FIG. 1, when the bag 4 containing the sliced bread 1 is sent in the direction of the arrow 5 by the blade conveyor 6 and reaches the position BB where the sirocco fan 13 is arranged, the belt conveyor 10, The air blowing from the sirocco fan 13 is started toward the opening of the bag 4 placed on the head 11, and the opening of the bag 4 is widened by the air blown from the sirocco fan 13 as shown in FIG. In this way, the widened bar 20 that has been displaced as indicated by the arrow 35 at the position of the bag 4 that has been widened as shown in FIG. 3 by the air blown from the sirocco fan 13 is located in the opening of the widened bar 20 as shown in FIG. As shown in FIG. 5 (b), the enlarged opening bar 20 is expanded laterally as shown in FIG. 5 (d) by the cam follower 24 coming into contact with the cam C2 as shown by the arrow 36. The bag 4 is returned to the CC position in FIG.

When the enlarged opening bar 20 comes to the position of the line CC in FIG. 1 together with the bag 4, the deaeration member 41 is lowered to make the opening end of the bag 4 lightly pressed. Thereafter, the widening opening bar 20 expands the tip and performs a retreating operation, whereby the opening of the bag 4 is flattened and the bag 4 is pulled toward the widening opening bar 20 as shown in FIG. The expansion / contraction operation of the expansion opening bar 20 in the meantime is as described with reference to FIG.
Simultaneously with the retraction of the enlarged opening bar 20, the air cylinder 44 is extended and the pushing bar 45 pushes out the bottom of the bag 4. This operation is shown in order in FIGS. 6 (c) and 6 (d), whereby the bag 4 containing the sliced bread 1 is moved in the direction of the arrow 42 shown in FIG. The air in the non-filling space 43 in the previous bag is pushed and degassed by the deaeration member 41.

  As described above, the opening of the bag 4 placed flat on the belt conveyors 10 and 11 is sandwiched between the sealer 50 and the sealer receiver 52 to form a seal 54 and sealed. The sealed bag 4 containing sliced bread is sent to the binding machine 60, and the bag portion on the opening side is squeezed for appropriate binding.

  The seal of the bag 4 by the sealer 50 is adhered so as to achieve sealing of the opening of the bag 4, but when the consumer consumes the packaged sliced bread, it is easily peeled off by hand. A seal is preferred. As an example of the method, as shown in Japanese Patent Application Laid-Open No. 2001-247101 related to the application of the present applicant, an adhesive layer bonded by heating to a temperature not higher than the sealing temperature of the film constituting the bag 4 is used as a sealing portion. There is a method in which the opening is weakly temporarily sealed by being attached in advance.

The present invention has been specifically described above based on the illustrated embodiments. However, the present invention is not limited to these embodiments, and the specific structure and configuration are within the scope of the present invention shown in the claims. Needless to say, various changes may be made.
For example, in the above-described embodiment, before sealing the bag 4 containing sliced bread, the deaeration member 41 that is moved up and down to discharge the air in the unfilled space 43 in the bag 4 is provided, and the bag 4 is Although the deaeration operation is performed by moving toward the enlarged opening bar 20 by the cylinder 44 and the push-in bar 45, the deaeration may be performed more strongly by suction depending on the type of the packaged product. As an example, FIG. As shown in (c), an intake pipe 27 that is put into and out of the opening of the bag 4 together with the enlarged opening bar 20 is provided, and degassing can be performed from the bag 4 through the intake pipe 27.
Further, in the above embodiment, one sirocco fan 13 that widens the opening of the bag at the BB position is arranged, but a plurality of them are arranged, and air blowout and blowout blocking are sequentially performed according to the conveyance of the bag 4. You may comprise so that it may perform.
Further, in the above-described embodiment, the widened opening bar 20 has a structure that is squeezed in the distal direction and opened in the distal direction. Instead of this, two bars are used. Alternatively, an enlarged opening bar may be adopted in which the distance between each other is kept in a parallel state.

Moreover, in embodiment described above, the belt conveyors 10 and 11 which convey the opening edge part of the bag 4 containing slice bread are made into a material which has adhesiveness with respect to the plastic bag 4, and it is in a flat state on it. Although the holding of the opened portion of the bag is surely performed, the belt conveyors 10 and 11 can be made of general materials. Alternatively, in order to securely hold the open end of the bag, a perforated belt may be used for the conveying belt to hold the air, and as shown in FIG. The belt conveyors 10 and 11 and the chain may be run on the vacuum chamber 17 with the suction holes 16 so that a suction force acts on the opening of the bag from the bag, and the bag may be conveyed while holding the opening end of the bag. .
Further, in the above-described embodiment, the air cylinder 44 and the push-in bar 45 are stationary at the CC position in FIG. 1, but the position along the line BB in FIG. 6 and the C-C line are displaced, and the opening 4 of the bag 4 shown in FIG. 6 is flattened and deaerated while the expanded opening bar 20, the air cylinder 44 and the pushing bar 45 are displaced together. May be performed.

As described above, the present invention has two widened openings in which the bag is opened by blowing air to the opening end portion of the bag filled with the packaged product, and the distance between the opened bags is reduced. A bag-packing and packaging method in which a bar is inserted and a widening opening bar is widened and retracted so as to widen the opening of the bag horizontally, and then the opening end of the bag widened horizontally is sealed. provide.
According to the packaging method of the present invention, the opening end portion of the bag filled with the package product is quickly spread in a flat state on the conveying belt by the two widening opening bars that are quickly expanded and contracted by two different cams. The opening of the held and flattened bag is sandwiched between sealers so that even a very thin and weak plastic bag can be sealed without wrinkles.

The top view which shows the structure of the packaging apparatus for enforcing the packaging method of this invention to packaging of sliced bread. Sectional drawing in alignment with the AA of FIG. Sectional drawing which follows the BB line of FIG. It is explanatory drawing which shows the structure and operation | movement of an enlarged opening bar currently used in the position of CC line in the apparatus of FIG. 1, (a) shows the state which the enlarged opening bar is opening the opening of a bag, (b ) Shows a state in which the widened opening bar is depressed. Explanatory drawing which shows the expansion / contraction operation | movement of an expansion opening bar in order of (a) to (e). In the apparatus of FIG. 1, the explanatory view which shows the structure and operation | movement of the pushing bar arrange | positioned facing the enlarged opening bar in order of (a) to (d). Sectional drawing which follows the DD line | wire of FIG. The side view which shows the other example of the conveyance belt with respect to the opening edge part of a bag.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Slice bread 2 Supply conveyor 4 Slice bread containing bag 6 Blade conveyor 7 Guide 8 Blower 10 Belt conveyor 11 Belt conveyor 13 Sirocco fan 14 Air cylinder 15 Air shut-off member 16 Suction hole 17 Vacuum chamber 20 Expansion opening bar 21 Pivoting point 23 Spring 24 Cam follower 27 Air intake pipe 28 Air cylinder 29 Piston bar 30 Horizontal bar 31 Cam part 32 Cam part 33 Spring 34 Pin 41 Deaeration member 43 Non-filling space 44 in the bag 44 Air cylinder 45 Push bar 50 Sealer 51 Air cylinder 52 Sealer Receiving 53 Endless belt 54 Sealing unit 60 Binding machine C1 Cam C2 Cam

Claims (4)

  A bag filled with goods is placed on a conveyor and conveyed, and air is blown to the opening end to open the opening of the opening, and two expanded bars are provided on each of the bars. In contact with the cams to reduce the distance between them, and after inserting into the opened bag, the cam follower is brought into contact with a cam different from the cam to be spread laterally and A bagging and packaging method comprising: retreating the widened opening bar having a widened opening, and then sealing with the opening end of the widened bag sandwiched therebetween.   The degassing member holds the opening end that is laterally widened by the widening opening bar and moves the bag relative to the degassing member by retracting the widening opening bar. 2. The bagging and packaging method according to claim 1, wherein after the air between the opening end of the bag and the filled package is exhausted by the member, the bag opening end is sealed.   3. The air is discharged by moving the bag relative to the deaeration member by retreating the expanding bar from the bag and pushing the bag from the bottom. The bagging and packaging method described.   The intake pipe is inserted into the opened bag together with the two enlarged opening bars, and the intake is sucked out by the intake pipe from the bag in which the opening is widened by the enlarged opening bar. The bagging and packaging method according to claim 1, wherein the opening end portion is sealed in a state.

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