JP3208716U - Packaging bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging bag capable of reliably forming a steam port and safely opening the packaging bag after heating. In a packaging bag for a microwave oven, a partial heat welding portion 5 in a certain range continuous from an upper side seal portion 2a is provided at a position near one inner corner of a side seal portion 2b in one corner portion 4 on the upper side. An easy-open perforation 10 formed across the partial heat-welded portion 5 is formed in the left and right entire regions of the front and back of the packaging bag, and a stopper in a direction perpendicular to the easy-open perforated 10 is formed in the partial heat-welded portion 5 The first cut line 6 for the stopper and the second cut line 7 for the stopper are respectively formed, and the left notch portion 11b and the left cut portion 11b are formed on both outer edges of the left and right side seal portions where the perforation 10 for easy opening is formed. A right notch 11a is formed. [Selection] Figure 1

Description

  The present invention relates to a packaging bag that can be electromagnetically heated in a microwave oven, and can be easily formed with a steam port, and can be opened safely and reliably.

  Conventionally, what was disclosed by patent document 1 as this kind of packaging bag is proposed.

  The packaging bag is provided with a tongue-shaped heat welding portion at a corner portion of the packaging bag, an opening cut is provided in the tongue-shaped heat welding portion, and the opening cut is cut from the notch at the edge of the packaging bag. Thus, a steam port can be formed.

JP 2000-335654 A

  By the way, when the conventional packaging bag is opened from the notch with the opening cut, the cutting line from the notch portion moves to the upper side or the lower side, and the opening cut is appropriately cut. There was a possibility that it might not be possible.

  In addition, when the contents are taken out to a dish or the like after the electromagnetic heating is finished, it is necessary to cut the upper side of the packaging bag in the horizontal direction. .

  The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide a packaging bag that can reliably form a steam port and can safely and reliably open the packaging bag after heating. And

In order to achieve the above object, the present invention
First, in a packaging bag sealed around the resin film, a certain range of a continuous range from the upper side seal portion at a position near the inner edge of the side seal portion at one corner portion on the upper side. A partially heat-sealed portion is formed, and easy-opening perforations that cross the partial heat-welded portion are formed in the entire region in the left and right directions of the front and back of the packaging bag, and the partial heat-welded portion is orthogonal to the easy-open perforated Left and right side portions in which the first cut line for the stopper in the direction to be moved and the second cut line for the stopper are provided above the first cut line, and the perforation for easy opening is formed. Both outer edges of the seal part are constituted by a packaging bag in which a left notch part and a right notch part are respectively formed.

  When configured in this way, when the upper end piece on the partial heat weld part side is gripped and opened from the right notch part toward the partial heat weld part, for example, a cutting line is formed linearly along the perforation for easy opening, When it stops once at the first cut line and opens further upward, the cutting line reaches the second cut line and the opening operation is stopped, so that the steam port can be opened easily. In addition, after electromagnetic heating, the upper end of the packaging bag is cut in a straight line along the perforation for easy opening in a horizontal direction from, for example, the left notch on the side opposite to the partial heat welded portion. The entire upper piece including the piece can be cut off, and the contents can be easily taken out.

  Secondly, the easy-open perforation includes a multi-stage perforation in which a plurality of perforations are arranged close to each other in the vertical direction, and the easy-open perforation includes the left notch or the right notch. It is comprised by the packaging bag of the said 1st thing which has the structure which can be opened from either side.

  With this configuration, for example, an opening for steam can be formed in the right corner of the packaging bag, and after heating, the entire upper piece of the packaging bag can be cut from the opposite direction (left side of the packaging bag) Both opening of the mouth and removal of the contents can be performed easily and safely.

  3rdly, in the said partial heat welding part, it is comprised by the packaging bag of the said 1st or 2 which is what the lower 3rd cutting line for stoppers was formed in the downward position of the said 1st cutting line. .

  With this configuration, after the cutting line reaches the first cutting line, even if a cutting force is applied downward, the cutting line reaches the third cutting line and the opening operation is stopped. Therefore, the steam port is not opened larger than necessary.

  Fourthly, the first cut line is a straight cut line having a width that is substantially the same as the vertical width of the perforation for easy opening or that slightly protrudes above and below the vertical width. It is comprised by the packaging bag in any one of.

  If comprised in this way, the cutting line which follows the perforation for easy opening can be reliably guide | induced to a 1st cutting line.

  5thly, the said 2nd cutting line is the packaging bag in any one of said 1st-4th which is an arc-shaped cutting line by which the connection part to the said partial heat welding part was left on the upper side. Composed.

  If comprised in this way, since the center part of the circular arc of a 2nd cut line is not cut off from a packaging bag, generation | occurrence | production of an unnecessary cut piece at the time of manufacture can be prevented.

  Sixth, the distance between the side seal portion side edge closer to the partial heat weld portion and the inner edge of the side seal portion is the length of the entire opening on the upper side of the packaging bag. It is comprised by the packaging bag in any one of said 1-5 which is the distance of the range of 7%-15%.

  The edge on the side seal portion side closer to the partial heat welded portion can be the edge (5 ') of the partial heat welded portion (5). The inner edge of the side seal portion may be an inner edge (2b '). If comprised in this way, while being able to discharge | release a vapor | steam at the time of a heating, the vapor | steam port which can prevent the leakage of the contents can be formed.

  7thly, the said packaging bag is comprised by the packaging bag in any one of said 1st-6 which is a self-supporting type packaging bag.

  If comprised in this way, since it can be made to become independent at the time of a heating within a microwave oven, the optimal packaging bag can be implement | achieved for the heating in a microwave oven.

  According to the present invention, the steam port can be easily opened by opening from one side of the upper side of the packaging bag along the perforation line for easy opening, and after heating, it can be easily performed from the other side of the packaging bag. By opening the upper piece of the packaging bag along the opening perforation, the upper piece side of the packaging bag can be separated and the contents can be easily taken out. The opening of the steam port and the removal of the contents are burned. This can be done safely and easily.

  Further, since the opening line of the steam opening reaches the first cutting line and then reaches the second cutting line or the third cutting line and the opening operation is stopped, the steam opening is opened larger than necessary. Never happen.

  Moreover, the cutting line along the perforation for easy opening can be reliably guided to the first cutting line, and there is no failure in forming the steam port.

  Moreover, since the center part of the circular arc of a 2nd cut line is not cut | disconnected from a packaging bag, generation | occurrence | production of an unnecessary cut piece at the time of manufacture can be prevented. Further, there is no possibility that the cut piece is mixed as a foreign substance in the packaging bag.

  In addition, it is possible to realize a packaging bag that can release steam during heating and can prevent leakage of contents from the steam port.

  Moreover, since it can be made self-supporting at the time of a heating with a microwave oven, the optimal packaging bag can be implement | achieved at the time of the heating with a microwave oven.

It is a front view of the surface side of the packaging bag which concerns on this invention. It is a rear view of the back surface side of a packaging bag same as the above. It is an enlarged front view of the partial heat welding part vicinity of a packaging bag same as the above. It is a perspective view at the time of the heating of a packaging bag same as the above. It is a perspective view after the heating of a packaging bag same as the above.

  Hereinafter, a packaging bag for a microwave oven according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 shows a front surface 1a of a packaging bag 1 according to the present invention, and FIG. 2 shows a back surface 1b. This packaging bag 1 can be electromagnetically heated in a microwave oven, is made of heat-resistant front and back resin films, upper side seal portion 2a on the front surface 1a and back surface 1b, right side seal portion (side seal portion) 2b, By sealing (thermal welding) the left side seal part (side part seal part) 2c and the lower side seal part 2d, a packaging bag 1 with four sides sealed is formed. The left and right directions and the up and down directions in FIG. 1 are defined as “left and right” and “up and down” and will be described below (in FIG. 2 showing the back side, the left and right directions are reversed with respect to FIG. 1).

  The packaging bag 1 shown in FIGS. 1 and 2 is a self-supporting bag, and the lower side seal portion 2d includes a lower leg portion 3a, 3b and a lower leg portion 3a, 3b which are divided into two branches as shown in FIG. The gusset portion 3c is configured such that the gusset portion 3c spreads in the horizontal direction with the contents 4 stored in the packaging bag 1 so that the lower end leg portions 3a and 3b can stand by themselves. Has been. Of course, the bag is not limited to a self-supporting bag, and may be a non-self-supporting four-way seal bag in which the lower seal portion 2d is sealed in the same manner as the upper seal portion 2a.

  In such a packaging bag 1, continuous from the upper side seal portion 2 a at a position closer to the side near the inner edge 2 b ′ of the right side seal portion 2 b (side seal portion) in the right side (one side) corner portion 4 on the upper side. The partial thermal welding part 5 of the fixed range of the downward direction which was made is formed. This partial heat-welded portion 5 is formed by bonding the entire opposing surfaces of the inner surfaces of the front surface 1a and the back surface 1b of the resin film by heat welding in the same manner as the upper side seal portion 2a and the like. Is formed.

  The partial heat welding part 5 is formed with a longitudinal straight cut line (first cut line) 6 for a stopper in the center (see FIG. 3). This cut line 6 is a cut through the resin film from the front surface 1a to the back surface 1b. When the upper end piece 9 is opened from the right cut portion 11a in the direction of arrow A along the perforation 10 described later, It has a function of temporarily stopping the cutting line at the position of the lead-in line 6. The cut line 6 is substantially the same as the vertical width t1 (see FIG. 3) of an easy-open perforation 10 described later, or a vertical straight cut line with a width slightly protruding up and down from the vertical width t1. Is formed.

  Further, an arcuate cut line (second cut line) 7 is formed at a position above the cut line 6 of the partial heat welding part 5. This score line 7 is composed of a circular arc portion 7a composed of a notch penetrating from the front surface 1a to the back surface 1b of the resin film, and a connection portion 7b as a portion where the score is not formed. The circular arc part 7a is located in the direction of the cut line 6 (downward), and the connecting part 7b is formed on the opposite side (upper part) of the cut line 6.

  Further, an arcuate cut line (third cut line) 8 is formed at a position below the cut line 6 of the partial heat welding portion 5. This score line 8 is composed of a circular arc portion 8a composed of a notch penetrating from the front surface 1a to the back surface 1b of the resin film, and a connection portion 8b as a portion where the notch is not formed. The circular arc part 8a is located in the direction of the cut line 6 (upward), and the connection part 8b is formed on the side opposite to the cut line 6 (lower part).

  The arc-shaped cut lines 7 and 8 are cut lines when the upper end piece 9 is moved to the upper side (see FIG. 4) or the lower side after the cut line is temporarily stopped at the cut line 6. Reaches the arc portion 7a or arc portion 8a from the upper end 6a or the lower end 6b (see FIG. 3) of the cut line 6, thereby stopping further cutting of the cutting line upward or downward, and the upper end piece. 9 is provided to prevent the 9 from being separated from the packaging bag 1.

  The distance t2 between the right edge (side edge) 5 ′ of the partial heat welded portion 5 and the inner edge 2b ′ of the right side seal portion (side seal portion) 2b on the side close to the partial heat welded portion 5 is (FIG. 1). See), and the distance in the range of 7% to 15% of the left and right length t3 of the entire opening on the upper side of the packaging bag 1 is preferable. For example, when the opening distance t3 = 128 mm, t2 = 8.96 mm to 19.2 mm, preferably about t2 = 15 mm (11.7%). That is, the distance t2 between the edge 5 'on the side seal portion side near the partial heat welding portion 5 and the inner edge 2b' of the side seal portion 2b is the opening on the upper side of the packaging bag 1. The distance is in the range of 7% to 15% of the entire left and right length t3.

  The distance t2 between the right edge 5 ′ of the partial heat welded portion 5 and the inner edge 2b ′ of the right side seal portion 2b is set as the above distance range because the distance t2 is shorter than the distance of the entire opening. When the steam is ejected from the steam port 11 (see FIG. 4) by electromagnetic heating in the microwave oven, when the inside of the packaging bag 1 expands, the lower end 5a of the partial heat welding part 5 When the lower packaging bag is inflated, the a part of the surface 1a (the lower part of the steam port 11 on the front surface 1a side) and the a 'part of the back surface 1b (the lower part of the steam port 11 on the back surface 1b side) are By expanding in the direction, conversely, the resin film on the front surface 1a and the back surface 1b of the portion (steam discharge passage) 11 ′ surrounded by the steam port 11, the right seal portion 2b, and the right edge 5 ′ of the partial heat welding portion 5 Can prevent the contents from spilling from the steam outlet 11 It is.

  In addition, since the above-described effect is that stress due to swelling (expansion) of the front and back surfaces 1a and 1b of the resin film due to the contents is concentrated on the lower end 5a of the partial heat welded portion 5 even before electromagnetic heating, the vicinity of the lower end 5a In the short interval between the front and back surfaces 1a and 1b of the resin film from the inner edge 2b 'of the right-side seal portion 2b, the front and back surfaces 1a and 1b of the film become close to each other. As a result, the contents enter the vapor discharge passage 11'. It is a difficult structure. Therefore, when the steam port 11 is opened, the contents are less likely to leak out from the steam port 11 even before electromagnetic heating. This is because, even when the packaging bag 1 is taken out from the microwave oven after the electromagnetic heating is completed, the contents are not easily spilled from the steam port 11 (because the inside of the packaging bag 1 is expanded by heat, compared with before heating). Therefore, there is an effect that the packaging bag 1 can be safely taken out from the microwave oven without causing the user to get burned.

  The partial heat welding portion 5 is formed with a horizontal straight perforation line 10 that crosses it at right angles, including right and left side seal portions 2b and 2c, in the entire left and right direction of the packaging bag 1. Has been. As shown in FIG. 3, this easy-opening perforation 10 has a horizontal perforation 10a in which a row of katakana characters “C” are arranged in a straight line in the same direction. The perforations 10a are composed of three rows (multi-stage configuration) of perforations 10 arranged close to each other in the vertical direction.

  The “C” portion of the perforation 10 is obtained by making a cut in the depth not penetrating the resin film in the thickness direction with respect to the resin film constituting the packaging bag 1. Further, the direction of the letter “C” is the direction in which the front surface 1a is directed in the direction (arrow A direction) from the right side seal part 2b to the left side seal part 2c, and the back side 1b. In FIG. 2 (see FIG. 2), the narrow gap side of “C” is directed in the direction (arrow A direction) from the right side seal portion 2b to the left side seal portion 2c. Thus, as shown in FIG. 1 and FIG. 2, the easy opening perforation 10 has the same position and the same direction on the surface side of the surface 1a of the resin film and the surface side of the back surface 1b of the resin film, respectively. Is formed.

  The perforation 10 of the “Ha” shape is wide in the direction of the arrow B (from the narrow interval of the “C”) even in the direction of the arrow A (the direction from the wide interval of the “C” shape to the narrow interval). Even in the direction toward the interval), since it is sequentially cut along the adjacent “C”, each can be cut smoothly in a straight line along the “C” perforation. is there. That is, the easy-open perforation 10 includes a multi-stage perforation 10 in which a plurality of (three in the embodiment) linear perforations 10a are arranged close to each other in the vertical direction. 10 has the structure which can be opened from either the left notch part 11b or the right notch part 11a. In addition, the single shape of the perforation is not limited to the letter “C”, and the perforation having a structure that can be cut from both the left and right sides is a perforation of another shape (for example, the letter “Y” in the horizontal direction). , “−” (Minus) symbol, etc.).

  On the outer edges 2c ", 2b" of the left side seal part 2c and the right side seal part 2b corresponding to the left and right ends of the perforation 10a at the center of the three-stage perforation 10, there are left cutouts as so-called notches. 11b and the right notch part 11a are formed.

  These notches 11a and 11b form the starting edge (cut) of the cutting. When the right upper end piece 9 or the left upper end piece 12 is gripped and cut in the direction of arrow A or arrow B, the notches Cutting is started from the parts 11a and 11b.

  Since the present invention is configured as described above, the operation of the present invention will be described below. In the packaging bag 1, food for electromagnetic heating (for example, curry or stew) is stored.

  First, the user forms the steam port 11 of the packaging bag 1 before electromagnetic heating. The user picks up the packaging bag 1 and holds the right upper end piece 9 with the right hand and opens it in the direction of arrow A (see FIG. 4).

  Then, the upper end piece 9 of the packaging bag 1 is cut in a straight line from the right cutout (cutout) 11a in the direction of arrow A along the perforation 10 for easy opening. The welding line 5 is reached and the cutting line 6 is reached to stop. At this time, between the notch portion 11 a and the cut line 6, straight easy opening on the front and back of the right seal portion 2 b, the front and back surfaces 1 a and 1 b of the resin film and the front and back of the partial heat welding portion 5. Since the perforation 10 is present, the cutting line reaches the cutting line 6 linearly along the perforation 10 from the right notch 11a, and the cutting line does not shift.

  Since the user normally tries to move the upper end piece 9 to the upper side as it is, the cutting line further cuts the partial heat welded portion 5 from the upper end 6a of the cut line 6. Immediately, the arc part 7a of the cut line (second cut line) 7 is reached.

  Then, since the entire arc portion 7a of the cut line 7 is separated from the surface of the partial heat welding portion 5 while leaving the connection portion 7b, the resistance to cutting is reduced at a stroke. Is stopped (state shown in FIG. 4). Thereby, the steam port 11 of the distance t2 can be formed along the cutting line.

  Even if the user grips the lower side of the right notch 11a and cuts it to the cut line 6 and then moves the gripping part from there, the perforation 10 is similarly applied. Along the direction of the arrow A to reach the cutting line 6, and further cut the partial heat welded portion from the lower end 6b of the cutting line 6, and the cutting line is immediately cut downward. Since it reaches the circular arc part 8a of the cut line (third cut line) 8, similarly, the resistance feeling related to cutting is reduced at this point. Therefore, since the user stops the cutting operation at this time, similarly, the steam port 11 can be appropriately opened.

  Even if the steam port 11 is opened, the upper end piece 9 is not completely separated as described above. As shown in FIG. 4, the connection portion 7b and the upper side seal portion 2a are attached to the packaging bag 1 as shown in FIG. Since it remains connected, it is possible to prevent unnecessary garbage from coming out. At this time, the stress due to the swelling (expansion) of the front and back surfaces 1a and 1b of the resin film due to the contents concentrates on the lower end 5a of the partial heat welded portion 5, and therefore from the vicinity of the lower end 5a to the inner edge 2b ′ of the right side seal portion 2b. In the distance between the front and back 1a and 1b of the resin film, the front and back 1a and 1b are close to each other and the contents are not easily spilled from the steam port 11, so that the user can easily handle the packaging bag 1.

  Thereafter, the user stands up and stores the packaging bag 1 in a self-standing state in a microwave oven, and performs electromagnetic heating. During electromagnetic heating, the contents of the packaging bag 1 are heated, the packaging bag 1 expands in the front and back directions, and steam can be discharged from the steam port 11 to the outside of the packaging bag 1.

  Further, when the inside is heated and the packaging bag 1 is expanded, the lower side expands from the lower end 5a of the partial heat-welded portion 5, whereby the a portion of the front surface 1a (the lower portion of the steam port 11 on the front surface 1a side) and the back surface When the a ′ part of 1b (the lower part of the steam port 11 on the back surface 1b side) swells in the front and back direction, the front surface 1a of the steam discharge passage 11 ′ and the resin film on the back surface 1b come close to each other.

  In this state, the vapor is released from the vapor outlet 11, but since the vapor emission passage 11 ′ is in the close state, the contents (liquid, solid, etc.) pass through the vapor outlet 11 from the vapor emission passage 11 ′. There is no leakage outside. Therefore, even if the packaging bag 1 falls down, the contents can be prevented from spilling out from the steam port 11 as much as possible.

  When the heating is finished, the packaging bag 1 is taken out from the microwave oven. Even when the packaging bag 1 is taken out from the microwave oven, the contents are not easily spilled from the steam port 11, so that the user can safely remove the packaging bag 1 from the microwave oven without being burned. And a user should just hold | grip the left upper end piece 12 of the packaging bag 1, and should cut | disconnect in the arrow B direction from the left notch part (notch part) 11b on the opposite side to the said steam port 11 (refer FIG. 5). ). Then, a cutting line is formed linearly in the direction of arrow B along the perforation 10 for easy opening, and reaches the partial heat welded portion 5 from the left side. When the cutting line 6 is reached, the right side By joining with the cutting line, as shown in FIG. 5, the entire upper piece 14 from the perforation 10 for easy opening can be separated from the packaging bag 1.

  Thereby, since the wide main opening part 13 of the left-right direction of the said packaging bag 1 is formed in the upper part of the packaging bag 1, the contents can be easily and safely taken out from the main opening part 13 to a container or the like.

  According to the present invention, the steam port 11 can be easily opened by partially opening along the perforation 10 for easy opening from one side (for example, the right side) of the upper side of the packaging bag 1, and after heating. Can open the whole from the other side (for example, the left side) of the packaging bag 1 along the perforation 10 for easy opening, so that the entire upper piece 14 of the packaging bag 1 can be separated and the contents can be easily taken out. The opening of the steam port 11 and the contents can be taken out easily and safely without fear of burns.

  Further, after the cutting line reaches the first cutting line 6, even if a cutting force is applied to the lower side, the cutting line stops at the third cutting line 8. There is no large opening.

  In addition, the cutting line 10 can be surely guided to the first cut line 6 by the easy opening perforation 10, and there is no failure in forming the steam port 11.

  Moreover, since the center part of the circular arc of the 2nd cut line 7 is not cut | disconnected from a packaging bag, generation | occurrence | production of an unnecessary cut piece at the time of manufacture can be prevented.

  Further, it is possible to realize a packaging bag that can release steam during heating and can prevent leakage of contents from the steam port 11.

  Moreover, since it can be made self-supporting at the time of a heating with a microwave oven, the optimal packaging bag can be implement | achieved at the time of the heating with a microwave oven.

  In addition, the resin film which comprises the said packaging bag has arrange | positioned polyethylene (PE), unstretched polypropylene (CPP), etc. which have heat-fusion property in an inner layer, for example, polyethylene terephthalate (PET), nylon (NY) in an outer layer ), Biaxially oriented polypropylene (OPP), etc., and a multi-layered film. The outer layer is further coated with vinylidene chloride or silica or alumina oxide to provide oxygen barrier properties or moisture resistance. Can do.

  According to the packaging bag of the present invention, the steam port can be easily and reliably formed, and after heating, the upper piece of the packaging bag can be reliably and smoothly opened and the contents taken out without being burned. Therefore, it is suitable for heating a microwave oven and has high industrial utility value.

DESCRIPTION OF SYMBOLS 1 Packaging bag 1a Front surface 1b Back surface 2a Upper side seal part 2b Right side seal part (side part seal part)
2b 'inner edge 2c left side seal part (side seal part)
4 Corner portion 5 Partially welded portion 5 'Inner edge 6 Cut line (first cut line)
7 Cut line (second cut line)
7a Arc part 7b Connection part 8 Cut line (third cut line)
10 Perforation for easy opening 10a Perforation 11a Right notch 11b Left notch 13 Opening t1 Vertical width t2 Distance t3 Length

Claims (7)

In a packaging bag sealed around a resin film,
At a position near the side near the inner edge of the side seal part in one corner on the upper side, a partial heat welded part of a certain range continuous from the upper side seal part is formed,
The perforation for easy opening crossing the partial heat welding part is formed in the entire left and right direction of the front and back of the packaging bag,
A first cut line for a stopper in a direction orthogonal to the perforation line for easy opening and a second cut line for a stopper are provided above the first cut line in the partial heat welding portion, respectively. And
A packaging bag in which a left cut portion and a right cut portion are formed on both outer edges of the left and right side seal portions on which the easy-open perforations are formed. The perforation for easy opening consists of perforations with a multi-stage configuration in which a plurality of perforations are arranged close to each other in the vertical direction,
The packaging bag according to claim 1, wherein the perforation for easy opening has a configuration capable of being opened from either side of the left notch or the right notch.   The packaging bag according to claim 1 or 2, wherein a third cutting line for a stopper is formed at a position below the first cutting line in the partial heat welding portion.   The first cut line is a straight cut line having a width substantially the same as the vertical width of the perforation for easy opening or a width slightly protruding up and down from the vertical width. The packaging bag described.   The packaging bag according to any one of claims 1 to 4, wherein the second cut line is an arc-shaped cut line in which a connection portion to the partial heat welding portion is left on the upper side.   The distance between the edge on the side seal portion side closer to the partial heat welding portion and the inner edge of the side seal portion is 7% to 15% of the left and right length of the entire opening on the upper side of the packaging bag. The packaging bag according to claim 1, which has a distance in the range of%.   The packaging bag according to claim 1, wherein the packaging bag is a self-supporting packaging bag.

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