JP2019073298A - Manufacturing method of content filled packing bag - Google Patents

Abstract

To provide a manufacturing method of contents filled packing bag which enables effective operation including making a bag with fastener, performing sterilization and filling of contents without sterilization failures.SOLUTION: A packing bag with fastener is made up of two resin films, front and rear, with fringes sealed to form a storing part, and a fastener is arranged in the storing part, enabling re-sealing. In a manufacturing method of such a packing bag with contents filled, such processes are installed at least as a film sterilization process for sterilizing the two resin films, a fastener sterilization process for sterilizing the fastener, a bag making process for making a bag by sealing margins of resin films after attaching the sterilized fastener to the sterilized resin film, a contents filling process for filling the margins sealed packing bag with contents, and an inlet sealing process for sealing the inlet. The bag making processes is done under aseptic conditions.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a method for manufacturing a content-containing packaging bag, and more particularly, the content is aseptically filled in a zippered packaging bag that can be resealed by a fastener disposed in a content storage unit. The present invention relates to a method of manufacturing a content-containing packaging bag.

In the case of packaging bags containing enteral nutrition and liquid food etc., drinking water etc. may be injected into the packaging bags in order to replenish water etc. after administering the contents in the container . For this reason, in order to open and close the packaging bag after content administration easily, the linear fastener is formed in the packaging bag upper part.
Since contents such as nutrients and medicines to be filled in such a zippered packaging bag are to be administered into the body and are also required to be preserved, it has been the conventional practice to fill the packaging bag with the contents. After that, sterilization such as retort sterilization has been performed.
However, in the case of a zippered packaging bag in which resealing is made possible by providing a plastic fastener in a packaging bag whose peripheral portion is sealed, a filling portion for storing the contents, and a void having a portion to be opened Since there is a risk that sufficient sterilization will not be performed in the void where there is no water present, at least the base material that constitutes the void is sterilized by ultraviolet light etc. and then made into a bag, and the filling section The sterilization method which fills up the contents in is proposed (the following patent documents 1).

Since the above method manufactures a packaging bag and then sterilizes and fills it in a separate process, it takes time from the production of the packaging bag to the filling of the contents, and the need for storage and transportation of the packaging bag, etc. There is a problem in terms of manufacturing efficiency.
In order to ameliorate such problems, a method has been proposed in which the steps of manufacturing, sterilizing and filling packaging bags are continuously performed.
For example, in the following patent documents 2 to 4, the process of conveying the long film which becomes the film of the front and back of the packaging bag, the male and female fitting part fitted in the position which becomes the surface of either of the films of the front and back Of attaching the chuck tape in the state, sterilization by immersion in hydrogen peroxide water or hydrogen peroxide gas treatment, removal of the hydrogen peroxide, sterilization of a zippered packaging bag having steps of bag making / filling sealing A bag making and filling method has been proposed.

JP, 2006-182408, A Unexamined-Japanese-Patent No. 2017-39502 Unexamined-Japanese-Patent No. 2017-43380 JP, 2017-43383, A

  The aseptic filling process of the packaging bag with a zipper (fastener) performs manufacturing, sterilization, and filling of the packaging bag in a series of processes, so that the manufacturing efficiency is improved. However, in the above-described method for aseptically filling and packing the zippered packaging bag, since the fastener is attached to the packaging bag and then sterilization is performed using hydrogen peroxide, a gap at the side of the junction between the packaging bag and the fastener, There is a possibility that sterilization of a portion where hydrogen peroxide gas is difficult to enter, such as a fitting portion of a fastener, may be insufficient. In addition, since a step of removing hydrogen peroxide is essential after the sterilization step, and there is also a problem that the number of steps is large, a more efficient and more reliable aseptic filling method is desired.

  Therefore, an object of the present invention is to provide a method for producing a content-containing packaging bag, which can efficiently carry out the production, sterilization and filling of contents with a zipper in a series of steps and there is no risk of sterilization failure. It is.

  According to the present invention, the content is filled in a zippered packaging bag that can be resealed by the fastener disposed in the content storage unit formed by sealing the peripheral portions of the front and back resin films. In the method for manufacturing the packaging bag, a film sterilization process for sterilizing the front and back resin films, a fastener sterilization process for sterilizing the fastener, attaching the fastener supplied from the fastener sterilization process to the resin film supplied from the film sterilization process And sealing the periphery of the resin film to form a bag, filling the contents with the packaging bag sealed at the periphery, filling the contents, and filling and sealing the filling port. There is provided a method of producing a content-containing packaging bag, characterized in that the bag-making step is performed in an aseptic state.

In the method of manufacturing the content-containing packaging bag of the present invention,
1. The fastener is an openable and closable resin linear fastener in which a linear convex portion is formed on one surface and a concave portion for fitting the convex portion on the corresponding surface is formed, and the convex portion is formed. An integrated fastener in which the convex portion and the concave portion are fitted together by folding the formed surface and the surface on which the concave portion is formed integrally through the weakening line and folding it around the weakening line. Sterilization in a dry condition,
2. The sterilization in the film sterilization step and the fastener sterilization step is sterilization by dry gas,
3. The drying gas is a hydrogen peroxide gas having a vapor amount less than a saturated vapor amount;
4. Heating the resin film prior to the film sterilization step;
5. Being attached to the sterile film with the fastener closed.
6. Being attached to the sterile film with the fastener open;
7. The packaging bag is a packaging bag provided with a dispenser for dispensing contents, and the dispenser is an open dispenser with an open tip, and after being attached to the film before carrying in the sterilization process, the film sterilization process Sterilization at the same time as sterilization of the film, and closing the opening of the dispenser in the bag making process,
8. The packaging bag is a packaging bag provided with a content dispensing dispenser, and the dispenser is a closed dispenser whose tip is closed, and is supplied to the bag making process through a dispensing device sterilization process and a sterilized film Be attached to the
9. In the pouring tool sterilization step, a spray nozzle is inserted into the inside of the closed pouring tool and sterilization is performed by spraying a dry gas.
10. A partition plate capable of forming a plurality of flow paths inside the pouring device;
Is preferred.

In the method for producing the packaging bag with contents of the present invention, the fastener is attached to the packaging bag in order to bond the sterilized fastener to the sterilized film after sterilizing the resin film on the front and back sides of the packaging bag and the fastener in separate steps. In the case of gaps and backs of fasteners which occur at the same time, there is no possibility of sterilization failure because they are sufficiently sterilized.
Moreover, by using the resin linear fastener described above as the fastener, alignment to the front and back films is easy, and by sterilizing in the open state, the inside of the fitting portion and the back of the fastener can be surely sterilized. is there.

In the present invention, the sterilization process of the germicide can be simplified or made unnecessary by sterilizing the resin film, the fastener and the spout with a drying gas. Further, by setting this dry gas to be a hydrogen peroxide gas having a vapor amount less than the saturated vapor amount, the occurrence of dew condensation can be suppressed to the minimum, so the sterilization agent removal process can be simplified or made unnecessary. Becomes even easier.
In addition, by using the injection nozzle together with the exposure in a dry gas atmosphere, it becomes possible to spread the gas to details such as the recess of the fastener and the inside of the spout, and the sterilization can be surely performed.
In addition, since the fastener can be easily joined to the packaging bag in the closed (fitted) state or the opened state of the fastener, the packaging bag can be produced without causing the fitting failure of the recess and the protrusion in the manufacturing process. It can be joined.
Furthermore, in the present invention, manufacturing of the packaging bag (bag making, attachment of fasteners and dispensers), sterilization, filling of contents, and sealing can be performed continuously as a series of steps, so that the productivity is excellent. At the same time, there is no need for storage, transportation, etc. of the packaging bag, and the production efficiency is excellent.

It is a figure which shows an example of the packaging bag with a fastener used by this invention, (A) is a front view, (B) is a partially expanded sectional view in XX of (A). It is a top view of the fastener shown in FIG. It is a figure which shows an example of a pouring device. It is a figure which shows another example of a dispenser. It is a figure for demonstrating an example of the manufacturing process of the packaging bag in this invention, and an aseptic filling process. It is a figure for demonstrating another example of the manufacturing process of the packaging bag in this invention, and an aseptic filling process. It is a figure for demonstrating an example of the method to weld to a resin film in the state in which the fastener was closed. It is a figure for demonstrating the method to weld to a resin film in the state which the fastener opened.

(Packaging bag with fastener)
The zippered packaging bag used to fill the contents in the present invention is a fastener that can be resealed by a fastener disposed in the contents storage portion formed by sealing the peripheral portion of the front and back resin films. The shape is not limited as long as it is an attached packaging bag, and conventionally known ones can be used.
In the specific example shown in FIG. 1, the packaging bag 1 is formed by sealing the periphery of rectangular resin films 2a and 2b having long sides and short sides, and the inner side near the short side 3a above the sealing portion 4 of this periphery. The fastener 20 is fused in parallel to the short sides 3a and 3b. Moreover, in the specific example shown in FIG. 1, the content extraction tool 11 provided with the pouring outlet 10 in the lower part corner part is mounted | worn.
An opening planned portion 5 is formed between the fastener 20 and the heat seal portion 4 of the short side 3 a. In general, the planned opening 5 is a portion to be cut when the pouring of the contents in the filling portion A is completed, the fastener 20 is opened, and the void portion B is communicated with the filling portion A. It may be cut off using a cutting means such as scissors, or the opening scheduled portion 5 may be formed as a weakened portion such as a score to enable opening by hand.
Moreover, the hole 6 for suspending a packaging bag is formed in the heat seal part 4 of the upper corner part vicinity in the diagonal of the location in which the pouring-out tool 11 is formed.
Although heat sealing is preferable for sealing the resin film peripheral edge, it can be performed by a conventionally known bonding method such as ultrasonic sealing or sealing with a laser.

  FIG. 2 is a plan view of an integrated fastener that can be suitably used for the packaging bag with fastener of the present invention, and this integrated fastener 20 divides a sheet of resin sheet 21 by a weakening line 22 and this weakening line 22 A pair of facing surfaces 21a and 21b when folded in and a straight protrusion 23a is formed on one surface 21a, and a recess 23b for fitting the protrusion 23a on the other surface 21b is formed. It is an integral-type resin linear fastener that can be opened and closed. The integral fastener 20 is folded around the weakening line 22 so that the convex portion 23a and the concave portion 23b are fitted, and the integral fastener 20 is closed while maintaining the integral state, and can be adhered to the resin films 2a and 2b in this state. There is no possibility of causing a fitting failure which may occur when the member having the convex portion and the member having the concave portion are separately bonded to the resin film. Further, since the filling portion A and the void portion B do not communicate with each other unless the weakening line 22 is broken after being bonded to the packaging bag, the integral-type fastener can improve the liquid tightness of the filling portion A.

In the packaging bag with a fastener used in the present invention, as in the specific example shown in FIG. 1, it is suitable to take out the contents such as the enteral nutrition agent and the liquid food as described above by providing a dispensing tool below. As a dispenser which can be used for the packaging bag of the present invention, all the dispensing tools conventionally used for this type of packaging bag can be used. Specifically, although it is not limited to this, the spout shown in FIG. 3 and FIG. 4 can be illustrated.
That is, the spout 11 shown in FIG. 3 and FIG. 4 is located on the opposite side to the cylindrical main body 12 in which the space which becomes the pouring path of contents is formed inside, and the tip portion 13 of this cylindrical main body 12 , And a welding portion 14 welded and fixed to the packaging bag. As shown in FIG. 3, such a spout 11 is open at the tip end portion 13 of the cylindrical main body 12 and penetrates the pouring passage, and heats and presses the tip end portion 13 of the cylindrical main body 12 after sterilization. It may be either of the type to be squeezed and occluded, or the type occluded by the occluding portion 15 formed at the distal end portion 13 of the cylindrical main body 12 via the weakened portion 16 as shown in FIG. .
In addition, since the spout in which the tip portion is closed as shown in FIG. 4 may not be able to sufficiently sterilize the inside of the cylindrical main body only by being exposed to the sterilizing gas atmosphere, the closed type shown in FIG. In the spout of the above, it is preferable that a partition plate 17 which divides the internal space of the cylindrical main body 12 in the axial direction is formed in the cylindrical main body 12. The end on the closing portion 15 side of the partition plate 17 is formed so as to have a gap with the closing portion 15, and in one space partitioned by the partition plate 17 from the opening on the welding portion 14 side, When the nozzle 40 for blowing the sterilizing gas is inserted and the sterilizing gas flows in, the sterilizing gas flows into the other space from the gap on the closing portion side, and the sterilizing gas flows out from the opening on the welding portion side. It is possible to reliably sterilize all of the interior space of the
In addition, it is preferable that these spouts be covered with a cap from the outside in order to ensure hygiene.

(Production method)
The present invention is a method for producing a content-containing packaging bag produced by sterilizing the above-described zippered packaging bag and aseptically filling the contents therein, a film sterilization step of sterilizing resin films on the front and back, fasteners Fastener sterilization process to sterilize, after attaching the fastener supplied from the fastener sterilization process to the resin film supplied from the film sterilization process, then the bag making process to seal and manufacture the peripheral line part of the resin film, the peripheral part is sealed It is an important feature that at least the contents filling process for filling the contents into the packaged bag and the filling and sealing process for sealing the filling port, wherein the bagging process is performed in a sterile condition.
In the present invention, it is preferable to form a dispenser below the packaging bag with a fastener, and the configuration of the dispenser, that is, depending on whether the opening of the dispenser is closed or not, the dispenser with a film and It can be divided into a method of sterilizing simultaneously (hereinafter referred to as “first production method”) and a method of separately providing a sterilization step of the pouring device (hereinafter referred to as “second production method”).

(First production method)
When the inside of the dispenser can be relatively easily sterilized, such as an open spout as shown in FIG. 3 as a dispenser, in the process schematically shown in FIG. Aseptic filling and sealing of objects can be performed.

[Film sterilization process]
Using a welding device 101 (a pair of a support plate and a heat seal bar), the pouring device 11 in which a pouring passage supplied from a supply port (not shown) penetrates a predetermined position of the long resin film 2 unwound from a coil Partially weld one side of the pouring tool 11 (FIG. 5 (A)). Before or after welding the pouring-out tool 11, the resin film 2 may be heated to increase the surface temperature by a known technique such as blowing of heated air or conveying on a heated roller. It is preferable to further improve the condensation prevention effect.
Next, the resin film 2 to which the dispensing tool 11 is welded is introduced into the film sterilization step. The inside of the film sterilization chamber (B) is filled with a sterilization gas, and the film is sterilized by being transported in the sterilization gas atmosphere. Moreover, although the pouring-out tool 11 is sterilizable by being conveyed in a sterilizing gas atmosphere similarly to the resin film 2, in the specific example shown to a figure, the injection | spray nozzle 102 is inserted in the pouring-out tool 11, and sterilizing gas is injected. By doing this, the bactericidal effect in the pouring device 11 is further enhanced. At this time, as described above, since the inside of the pouring tool 11 penetrates, the pouring passage can be disinfected easily and reliably.

In the film sterilization step, sterilization may be carried out using a conventionally known method such as ultraviolet light or radiation or a medicine (sterilizing solution), but in the present invention, sterilization using a dry gas is particularly preferable. This makes it possible to simplify or eliminate the process of removing the drug when using the sterilizing solution, and is excellent in productivity. Of course, sterilization using dry gas and sterilization using ultraviolet light can be used in combination.
As the drying gas to be used, hydrogen peroxide gas, peracetic acid gas, ozone gas, chlorine dioxide gas and the like can be exemplified, but hydrogen peroxide gas is preferable, and hydrogen peroxide having a vapor amount less than the saturated vapor amount is particularly preferable. Gas can be suitably used. In general, when using a gas in the sterilization process, it is necessary to monitor the humidity in the sterilization chamber and to perform humidity adjustment by adjusting the air supply and exhaust in the sterilization chamber. It is common to do by the provided duct. In the example shown in FIG. 5, air is supplied from a duct provided in a sterile room (D) described later, and the side of the sterilizing room (B) on which the resin film 2 is supplied, in the sterilization room (C) Humidity control in the sterilization chamber is performed by exhausting air by a duct provided in the supply section side of the fastener 20 and the buffer zone 105 adjacent to the aseptic room (D). As in the present invention, when using hydrogen peroxide gas having a vapor amount less than the saturated vapor amount for sterilization, it is possible to minimize the occurrence of condensation, so the agent removal step when using a sterilizing solution It is even easier to simplify or eliminate the
The sterilization conditions using hydrogen peroxide gas are not limited thereto, but the treatment time for 10 seconds to 10 minutes with a gas at a concentration of 350 to 5000 ppm and a temperature of 10 to 50 ° C., particularly a concentration of 1000 to 3000 ppm and a temperature of 20 to 20 minutes It is possible to develop excellent bactericidal properties by sterilization using a gas at 45 ° C. for a treatment time of 20 seconds to 2 minutes.
In addition, it is suitable that the sterilization level of a film, a pouring tool, and the fastener mentioned later is 5 D or more.

[Fastener sterilization process]
In the present invention, it is an important feature to separately have a sterilization process of the fastener separately from the above-described film sterilization process, whereby the entire fastener as well as the inside of the recess of the fastener is surely sterilized. As a result, there is no possibility of causing a sterilization failure near the end of the film and the fastener as in the case of sterilization after attachment of the fastener.
Further, in the present invention, it is easy to position the front and back resin films by using the above-mentioned integral type fastener, and there is no possibility of causing a fitting failure of the concave and convex portions, and the manufacturing efficiency is excellent. In particular, conventionally known fasteners can also be used.
The integral-type fastener can perform sterilization easily and reliably by sterilizing with a flat film in a flat state which does not fold along the weakening line.
In the fastener sterilization step, as in the film sterilization step described above, the inside of the sterilization chamber (C) may be a sterilization gas atmosphere, and the fastener may be transported in the sterilization gas atmosphere to sterilize the fastener. In the case of an integral fastener, in particular, sterilization can be carried out in a flat state that does not fold along the weakening line, so sterilization can be carried out reliably without direct injection of sterilizing gas by the injection nozzle. Furthermore, the recess may be directly sterilized.
The integrated fastener is sterilized in a flat state, folded at the weakening line, and a sterile room for filling and sealing the bag and the contents in a state where the convex part and the concave part are fitted (the fastener is closed). (D) is conveyed while being long.

[Bag making process]
In the aseptic room (D), the folded sterile fastener 20 carried in from the fastener sterilization step is welded to a predetermined position of the sterilized resin film with a pouring device carried in from the film sterilization step, and the resin The film is cut, and the fastener 20 and the dispenser 11 welded to one resin film 2b are overlapped in a state of being sandwiched by the other resin film 2a.
In the sterile room (D) of FIG. 5, the resin film and the fastener portion carried in from the upper sterilization process are viewed from the side, and the film plane is viewed from the upper side at the boundary of the broken line in the figure. Although shown for convenience in the figure, the resin film represents a continuous long film before and after the wavy line.

When the films 2a and 2b in the overlapped state and the dispenser 11 and the fastener 20 located between the films pass between the welding devices 103 and 104, the fastener 20 can be inserted between the films 2a and 2b by the welding device 103. At the same time as the pouring device 11 is welded and fixed between the films 2a and 2b by the welding device 104, the width direction edges (upper edge 3a, lower edge 3b) of the resin films 2a and 2b are Be sealed. At the same time, in the first manufacturing method shown in FIG. 5, since the dispensing tool 11 used has an opening, the opening end is closed by heating and pressing.
Then, it is carried out of the aseptic room (D) through the buffer zone 105 to the contents filling room (E).
In addition, it is suitable that the aseptic room (D) which performs a bag forming process is a cleanliness level of 6 or more in JIS B 9920 so that the aseptic state of the film and the fastener sterilized in the sterilization process can be maintained. Also, it is preferable to form a buffer zone in which an exhaust duct etc. is installed between the aseptic room (D) and the filling room (E) in order to maintain the cleanliness and humidity of the aseptic room (D). It is.

[Content filling process]
The portion sealed on the upper edge and lower edge of the long resin film taken out of the sterile room (D) and the buffer zone 105 to the filling room (E) is moved by the welding device 107 in the traveling direction After the side edge of the side is sealed, the contents are filled. At this time, the cap 18 is covered from the outside on the dispenser 11 whose opening is closed.
After the contents are filled, the other side edge, which was the filling port, is welded and then cut, whereby the contents-filled packaging bag 30 is manufactured and carried out of the filling chamber (E).

(Second manufacturing method)
In the second manufacturing method, using a dispenser that can not easily sterilize the inside, such as a spout with a blocked tip shown in FIG. 4, sterilization of the dispenser is performed in a separate step from sterilization of the resin film , Is different from the first manufacturing method.
That is, as schematically shown in FIG. 6, through the film sterilization step, the fastener sterilization step, and the pouring device sterilization step, these are respectively sterilized and used in the aseptic room (D) using the sterilized film and fastener and the pouring device. After making a bag, fill and seal the contents.
In the film sterilization step, only the long resin film 2 unwound from the coil is sterilized (FIG. 6 (B)). The sterilization chamber (B) is the same as in the first production method, and is in a state of being filled with a sterilization gas, and the film is sterilized by being transported in the sterilization gas atmosphere.
The fastener sterilization process is the same as in the first production method, and is carried in a sterilization gas atmosphere in the sterilization chamber (C) in the same manner as the film sterilization process, using a long flat integral type fastener. And are carried into the aseptic room (D).

In the second manufacturing method, as shown in FIG. 4, a film sterilizing process for reliably sterilizing the inside with a sterilizing gas using a jet nozzle 40 since a dispenser with a closed tip is used. And the pouring tool sterilization process of another process is provided.
That is, as shown in FIG. 6, after the dispensing tool 11 is sterilized in the sterilization chamber (F), it is carried into the aseptic chamber (D) and welded together with the fastener 20 to the sterilized resin film 2. Is carried out in the same manner as the first manufacturing method described above, and after the upper and lower edges of the packaging bag are sealed, it is transported through the buffer zone 105 to the filling chamber (E). In the filling chamber (E), after the side edge of the resin film on the traveling direction side is sealed, the contents are filled, and then the other side edge which was the filling port is sealed and cut. As a result, the content-filled packaging bag is completed.

(Others)
The manufacturing method of the present invention is not limited to the specific example described above, and various modifications are possible.
For example, in the specific example described above, a long film wider than the dimensions of the packaging bag is used as the resin film, and this is cut in the bag-making process after the sterilization process to form two long resin films, Although a one-sealed packaging bag was manufactured, it is possible to fold it into a three-way sealed packaging bag without cutting a wide elongated resin film. Moreover, although it is inferior in the point of productivity, it can also be set as a four-way seal packaging bag using the sheet film which was previously cut | judged to the size of the packaging bag. Alternatively, a double-folded resin film may be sandwiched between two resin films and welded to form a bottom, which may be used as a standing pouch.

  Moreover, in the specific example mentioned above, the fastener conveyed from the sterilization process was first welded to only one resin film, and then was welded to the other resin film when sealing the edge of the packaging bag. However, it can also be welded to both front and back resin films simultaneously with the supply of fasteners to the aseptic room (D). When the fastener is simultaneously joined to both the front and back films, as shown in FIG. 7, the weakening line 22 is placed between the two surfaces 21a and 21b of the folded fastener 20 installed between the front and back films 2a and 2b. The baffle plate 41 consisting of a heat insulating member is inserted from the opposite side of the resin film, and the resin films 2a and 2b are welded to the surfaces 21a and 21b of the fastener using welding devices 42a and 41b such as heat seal bars from the outer surface side of the resin film. Can. By simultaneously welding the fastener to both the front and back films in this way, equipment can be simplified.

Further, in the above-described specific example, the integral fastener is sterilized in a flat state and then folded along the weakening line and joined in a state in which the convex portion and the concave portion are fitted (the fastener is closed). After sterilization in a flat state, it is also possible to join in a flat state (with the fastener open). When joining in a state in which the fastener is open, for example, as shown in FIG. 8, the inner surface side of the front and back films 2a and 2b is opened in a pine shape, and 21a and 21b of two surfaces of the fastener 20 in a planar state are The resin films 2a and 2b and the surfaces 21a and 21b of the fastener can be welded respectively using welding devices 43a and 43b and 44a and 44b such as heat seal bars.
By welding in a state in which the fastener is open as described above, reliable and high-speed welding can be performed without causing defects in the concave and convex portions in the manufacturing process.

The packaging bag used in the present invention is preferably made of a transparent resin film so that the contents can be viewed from the outside. Such a resin film may be a single layer film, but in order to improve the storage property of the contents, a multilayer structure having a barrier layer is preferable.
Specifically, although not limited to this, it is preferable to use a laminated film including the layer configurations of a heat seal inner layer / barrier layer / outer layer and a heat seal inner layer / substrate layer / barrier layer / outer layer. Among them, the heat seal inner layer is made of polypropylene, the base material layer is made of nylon, and the outer layer is made of polyethylene terephthalate having a vapor deposited layer such as aluminum oxide or inorganic silicon on the inner layer side as a barrier layer. It is suitable because it is excellent. For the barrier layer, ethylene-vinyl alcohol copolymer and the like can be used besides the above-mentioned nylon and vapor-deposited layer, and for the inner layer, polyethylene can be used other than the above-mentioned polypropylene. Nylon, polypropylene or the like can be used.
The integral fastener and the dispenser are preferably made of polypropylene, polyethylene or the like from the viewpoint of weldability with the inner layer of the resin film.

(Contents)
In the content-containing packaging bag of the present invention, it is possible to fill all the contents such as enteral nutrient, liquid food, drip agent and the like which are conventionally filled in this kind of packaging bag.

  Reference Signs List 1 packaging bag, 2 resin film, 4 seal portion, 11 dispenser (spout), 12 cylindrical main body, 13 tip portion, 14 welded portion, 15 closed portion, 17 partition plate, 20 fastener, 22 weakening line, 23a convex portion , 23b recess, 30 contents containing packaging bag.

Claims (11)

A manufacturing method of a content-containing packaging bag, which comprises filling a content into a zippered packaging bag that can be resealed by a fastener disposed in a content storage unit formed by sealing the peripheral portions of front and back resin films. ,
A film sterilization process for sterilizing the front and back resin film, a fastener sterilization process for sterilizing the fastener, a peripheral edge of the resin film after attaching the fastener supplied from the fastener sterilization process to the resin film supplied from the film sterilization process A bag-making process for sealing and bag-making the part, a content-filling process for filling the content in the packaging bag sealed at the peripheral portion, and a filling-sealing process for sealing the filling port;
The method for producing a content-containing packaging bag, wherein the bag-making step is performed in an aseptic state.   The fastener is an openable and closable resin linear fastener in which a linear convex portion is formed on one surface and a concave portion for fitting the convex portion on the corresponding surface is formed, and the convex portion is formed. An integrated fastener in which the convex portion and the concave portion are fitted together by folding the formed surface and the surface on which the concave portion is formed integrally through the weakening line and folding it around the weakening line. The manufacturing method of the content-containing packaging bag of Claim 1 which disinfects in a dead state.   The method according to claim 1 or 2, wherein the sterilization in the film sterilization step and the fastener sterilization step is sterilization using a dry gas.   The method according to claim 3, wherein the drying gas is a hydrogen peroxide gas having a vapor amount less than a saturated vapor amount.   The method for producing a content-containing packaging bag according to any one of claims 1 to 4, wherein the resin film is heated before the film sterilization step.   The method for producing a content-containing packaging bag according to any one of claims 1 to 5, wherein the fastener is attached to the sterilized film in a closed state.   The method for producing a content-containing packaging bag according to any one of claims 1 to 5, wherein the fastener is attached to the sterilized film in an open state.   The packaging bag is a packaging bag provided with a dispenser for dispensing contents, and the dispenser is an open dispenser with an open tip, and after being attached to the film before carrying in the sterilization process, the film sterilization process The method for producing a content-containing packaging bag according to any one of claims 1 to 7, wherein the film is sterilized simultaneously with the film sterilization, and the opening of the dispenser is closed in the bag making process.   The packaging bag is a packaging bag provided with a content dispensing dispenser, and the dispenser is a closed dispenser whose tip is closed, and is supplied to the bag making process through a dispensing device sterilization process and a sterilized film The manufacturing method of the content-containing packaging bag in any one of Claims 1-7 attached to.   The method for producing a content-containing packaging bag according to claim 9, wherein in the dispensing tool sterilization step, a spray nozzle is inserted into the inside of the closed dispensing device and sterilization is performed by spraying a dry gas.   The method for manufacturing a content-containing packaging bag according to claim 9 or 10, wherein a partition plate capable of forming a plurality of flow paths is formed in the inside of the pouring device.